WO2023273365A1

WO2023273365A1 - Solid gravity flow carrying apparatus and energy storage system

Info

Publication number: WO2023273365A1
Application number: PCT/CN2022/077039
Authority: WO
Inventors: 吴炎喜
Original assignee: 吴炎喜
Priority date: 2021-06-29
Filing date: 2022-02-21
Publication date: 2023-01-05
Also published as: CN117280116A

Abstract

A solid gravity flow carrying apparatus (1000). The solid gravity flow carrying apparatus is provided with a power tunnel (131) by means of a gravitational energy storage element moving track (100). Gravitational energy storage elements (900) pass through the power tunnel (131). A bottom mover (310), a top mover (320) and a side mover (330) are respectively electromagnetically coupled with a bottom stator (210), a top stator (220) and a side stator (230). A plurality of gravitational energy storage elements (900) are continuously pushed up to form a solid gravity flow to ascend synchronously, so as to convert electrical energy into power, thereby changing same into potential energy for storage; and a plurality of gravitational energy storage elements (900) are continuously pushed up to form a solid gravity flow to descend, so as to convert gravitational potential energy into electrical energy to be fed back to a power grid. In this way, environmentally-friendly and low-cost energy storage can be realized. In addition, the present invention further relates to an energy storage system for the solid gravity flow carrying apparatus.

Description

Solid gravity flow carrying equipment and energy storage system

technical field

The present application relates to the field of gravity energy storage, in particular to a solid gravity flow carrying device and an energy storage system.

Background technique

Energy is the material basis for human survival and social development. Ensuring sufficient energy supply is a necessary condition for people's happy life; solar energy is eternal, inexhaustible and inexhaustible. If solar energy becomes the ultimate energy source for human beings, human beings will never There is no need to worry about the depletion of fossil energy, and there is no need to worry about the deterioration of the environment due to the use of fossil energy.

But there are practical barriers to solar power. Due to the rotation of the earth, there are days when it is sunny and night when it is shady; due to the rotation of the earth, there are seasonal differences in the intensity of sunlight between summer and winter; and there are various factors such as the difference in the nature of the land and ocean on the earth's surface, and terrain changes. Cause water vapor evaporation, air convection cloudy, rainy and other weather. Intermittent day and night, seasonal difference between winter and summer, cloudy and rainy weather, all hinder the practicality of solar energy.

The space-time transfer of solar energy can be realized through energy storage, so that it can stably use the energy from the sun at any time. However, taking solar energy as the ultimate energy for human use has a huge value, and it can be applied to energy storage that balances diurnal, seasonal, and weather differences. It requires the support of a super-large-scale energy storage system; it requires the guarantee of huge energy storage resources. Energy is the basic material for human survival and social development, its economy is extremely sensitive, and low-cost energy storage is a necessary condition; due to the huge amount of energy storage required to balance day and night differences, seasonal differences, and weather differences, its related Industry and its daily operations must be environmentally friendly.

At present, there are many physical and chemical energy storage technologies, but pumped storage is the main technology. As of 2017, more than 96% of the world's installed energy storage capacity is pumped storage, and more than 99% of China's installed energy storage capacity is pumped storage. The main purpose of the existing energy storage projects is to optimize the peak shaving and valley filling of the power grid operation, and the scale is limited. In this regard, the geographical resources available for the construction of pumped energy storage power stations are very scarce, and the site selection of power stations is becoming more and more difficult. Although chemical energy storage projects have increased in recent years, it is unrealistic in terms of resource protection, economy, and environmental tolerance to use chemical batteries to meet the needs of energy transformation for ultra-large-scale energy storage. Therefore, the existing physical and chemical energy storage technologies cannot meet the ultra-large-scale requirements for the purpose of energy transformation.

Contents of the invention

An embodiment of the present application provides a solid gravity flow carrying device, wherein the solid gravity flow carrying device includes a plurality of gravity energy storage elements, a gravity energy storage element moving track, a linear motor stator group and a linear motor mover group, the The moving track of the gravity energy storage element is used to guide the lifting and moving of the gravity energy storage element. The moving track of the gravity energy storage element has a low-altitude section and a high-altitude section opposite to the low-altitude section. The inclined section between the high-altitude sections, the inclined section is provided with a power tunnel, the power tunnel has a tunnel bottom, a tunnel top opposite to the tunnel bottom, and two tunnel sides, and the linear motor stator group includes The bottom stator at the bottom of the tunnel, the top stator fixed at the top of the tunnel, and the side stator fixed at the side of the tunnel, the linear motor mover subgroup includes a bottom mover fixed at each of the gravitational energy storage elements The bottom mover, the top mover and the side mover are respectively fixed on the bottom, top and side of the gravitational energy storage element. When the low-altitude section is continuously pushed into the power tunnel, the bottom mover, top mover and side mover are electromagnetically coupled to the bottom stator, top stator and side stator respectively to convert electrical energy into driving power , to drive a plurality of the gravity energy storage elements to continue to continuously push and move to the high-altitude section. The gravity energy storage element continuously pushes through the power tunnel under the action of gravity, and the bottom mover, top mover and side mover are respectively electromagnetically coupled with the bottom stator, top stator and side stator to drive the mechanical Kinetic energy is converted into electrical energy, and the plurality of gravity energy storage elements continue to continuously push and move to the low-altitude section, waiting to be lifted to the high-altitude section power tunnel next time.

An embodiment of the present application provides an energy storage system, wherein the energy storage system includes the above-mentioned solid gravity flow carrying equipment, the energy storage system also includes a low-altitude storage yard and a high-altitude storage yard, and the low-altitude section runs through In the low-altitude storage yard, the high-altitude section runs through the high-altitude storage yard, and when the energy storage system stores energy, the low-altitude storage yard transports the gravity energy storage element to the low-altitude section, The high-altitude stockyard receives and stores the gravity energy storage element from the high-altitude section, and when the solid gravity energy storage system releases energy, the high-altitude stockyard delivers the gravity to the high-altitude section. An energy storage element, the low-altitude stockyard receives and stores the gravitational energy storage element from the low-altitude section.

In the solid gravity flow carrying equipment and energy storage system provided in the embodiments of the present application, a power tunnel is provided through the moving track of the gravity energy storage element, and the stator group of the linear motor includes a bottom stator fixed at the bottom of the tunnel, and a bottom stator fixed at the tunnel bottom. The top stator on the top and the side stator fixed on the side of the tunnel, the linear motor mover group includes a bottom mover, a top mover and a side mover fixed to each of the gravitational energy storage elements, so The bottom mover, top mover and side mover are respectively fixed on the bottom, top and side of the gravity energy storage element, and the bottom mover, top mover and side mover are respectively connected to the bottom stator 1. The top stator and the side stator are electromagnetically coupled, and multiple gravity energy storage elements are continuously pushed to form a solid gravity flow that rises synchronously to convert electric energy into power, thereby changing potential energy and storing it; multiple gravity energy storage elements The energy element is continuously pushed to form a solid gravity flow, which converts the gravitational potential energy into electrical energy and feeds it back to the grid.

The purpose of the present invention is to realize the complete transformation of energy, and innovate a super-large-scale energy storage technology with sufficient resource guarantee, superior economy, and environmental friendliness, so as to make solar energy the ultimate energy source for human reality.

The present invention utilizes the terrain conditions of large altitude difference between high-altitude plateaus, high mountains and surrounding low-altitude basins and lowlands to realize energy storage in the form of changing solid gravitational potential energy; such terrains are extremely rich in geographical resources, thus It solves the resource guarantee problem of ultra-large-scale energy storage under the condition of complete energy transformation.

The present invention creates the technical concept (technical method) of solid gravity flow, which makes the solid heavy flow state, and multiple gravity energy storage elements push back and forth in series on the moving track of the gravity energy storage element. Similar to water flow under the action of energy storage or energy release in different functional time zones, the solid gravity flow can continue to move in one direction between the altitude difference of several kilometers, which greatly improves the operating efficiency of the system and is easy to achieve a single machine with large capacity , super-large-capacity energy storage system.

The moving track of the gravity energy storage element of the present invention is divided into a dynamic tunnel section and a non-dynamic track section. The dynamic tunnel section generates all the power required for the rising of the solid gravity flow on the moving track of the solid gravity energy storage element, or carries the movement of the solid gravity energy storage element The gravity flow of solids in orbit descends with the full force of gravity. The power tunnel is powered by a large-thrust linear motor, which minimizes the length of the power tunnel and strengthens the subgrade treatment of the power tunnel section, so that it can bear the thrust exerted by the gravity of the solid gravity energy storage element throughout the lifting channel. It bears all the thrust exerted by the gravity of the solid gravity energy storage element throughout the lifting passage, so that the subgrade of the non-powered track section only bears part of the pressure exerted by the solid gravity energy storage element, and does not bear the thrust to the low altitude direction, thus simplifying the non-power The subgrade treatment of the dynamic track section reduces the cost of the subgrade and minimizes the system investment.

Description of drawings

In order to illustrate the technical solution of the application more clearly, the following will briefly introduce the accompanying drawings used in the implementation. Obviously, the accompanying drawings in the following description are only some implementations of the application. For those of ordinary skill in the art Generally speaking, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is a schematic diagram of a solid gravity flow carrying device provided by an embodiment of the present application;

Fig. 2 is a schematic cross-sectional view of II-II of the solid gravity flow carrying device of Fig. 1;

Figure 3 is a (top) schematic view of the gravitational energy storage element of the solid gravity flow carrying device of Figure 1;

Fig. 4 is a schematic cross-sectional view of A-A of the solid gravity flow carrying device of Fig. 3;

Fig. 5 is a simplified schematic diagram of the solid gravity flow carrying device of Fig. 1;

Fig. 6 is a schematic diagram of the low-altitude converter connection of the solid gravity flow carrying device in Fig. 1;

Fig. 7 is a schematic diagram of the high-altitude converter connection of the solid gravity flow carrying equipment in Fig. 1;

Fig. 8 is a schematic cross-sectional view of the braking section of the solid gravity flow carrying device provided by the embodiment of the present application;

Fig. 9 is a side view of the braking element provided by the embodiment of the present application;

Fig. 10 is a side view of the gravitational energy storage element provided by the embodiment of the present application;

Fig. 11 is a schematic diagram of an energy storage system provided by an embodiment of the present application;

Fig. 12 is a schematic diagram of a low-altitude stockyard of the energy storage system of Fig. 11 .

detailed description

The following will clearly and completely describe the technical solutions in the application embodiments in conjunction with the accompanying drawings in the application embodiments.

Referring to Fig. 1, Fig. 2 and Fig. 3, the present application provides a solid gravity flow carrying device 1000, the solid gravity flow carrying device 1000 includes a plurality of gravity energy storage elements 900, a gravity energy storage element moving track 100, a linear motor The stator group and the linear motor mover group, the gravitational energy storage element moving track 100 is used to guide the gravity energy storage element 900 to move up and down. The gravitational energy storage element moving track 100 has a low-altitude section 110 , a high-altitude section 120 opposite to the low-altitude section 110 , and an inclined section 130 between the low-altitude section 110 and the high-altitude section 120 . The inclined section 130 is provided with a power tunnel 131, the power tunnel 131 has a tunnel bottom 1311, a tunnel top 1312 opposite to the tunnel bottom 1311 and two tunnel sides 1313, and the linear motor stator group includes A bottom stator 210 at the bottom 1311 , a top stator 220 fixed to the tunnel roof 1312 and a side stator 230 fixed to the tunnel sides 1313 . The linear motor mover set includes a bottom mover 310 , a top mover 320 and a side mover 330 fixed to each of the gravitational energy storage elements 900 . The bottom mover 310, the top mover 320 and the side mover 330 are respectively fixed on the bottom, top and side of the gravitational energy storage element 900, and the multiple gravitational energy storage elements 900 are continuously topped by the low-altitude section 110. When pushing into the power tunnel 131, the bottom mover 310, the top mover 320 and the side mover 330 are electromagnetically coupled with the bottom stator 210, the top stator 220 and the side stator 230 respectively, so as to convert electric energy into Driving power to drive a plurality of gravity energy storage elements 900 to continuously push and move to the high-altitude section 120, and continuously push the multiple gravity energy storage elements 900 into the power tunnel by the high-altitude section 120 131, a plurality of the gravity energy storage elements 900 are continuously pushed through the power tunnel 131 under the action of gravity, and the bottom mover 310, the top mover 320 and the side mover 330 are respectively connected to the bottom stator 210 1. The top stator 220 and the side stator 230 are electromagnetically coupled to convert mechanical kinetic energy into electrical energy, and a plurality of the gravitational energy storage elements 900 continue to continuously push and move to the low-altitude section 110, waiting for the next time to rise again To the high altitude section 120 power tunnel 131 .

A power tunnel 131 is provided on the moving track 100 through the gravity energy storage element, the gravity energy storage element 900 passes through the power tunnel 131, and the bottom mover 310, the top mover 320 and the side mover 330 are connected to the bottom mover 330 respectively. The stator 210, the top stator 220 and the side stator 230 are electromagnetically coupled, and multiple gravity energy storage elements 900 are continuously pushed to form a solid gravity flow that rises synchronously to convert electric energy into power, thereby changing potential energy and storing it; The gravitational energy storage elements 900 are pushed continuously to form a solid gravity flow that descends, converts the gravitational potential energy into electrical energy, and feeds it back to the power grid.

In this embodiment, the moving track 100 of the gravity energy storage element includes two parallel rails 101 . The two parallel rails 101 respectively roll and cooperate with the track wheels of the gravity energy storage element 900 to guide the gravity energy storage element 900 to move. The rail 101 is fixed on a mountain with a large difference in altitude. The low-altitude section 110 is located at a low altitude of the mountain, and the high-altitude section 120 is located at a high altitude of the mountain. The inclined section 130 is located on the slope of the mountain. The altitude difference between the high altitude section 120 and the low altitude section 110 is 800m-3000m or above 3000m. For example, the altitude of the low altitude section 110 is 1200m, and the altitude of the high altitude section 120 is 4200m. The slope of the inclined section 130 preferably ranges from 20° to 60°, for example, the slope of the inclined section 130 is 30°. For example, the length of the inclined section 130 is 6000m.

In this embodiment, the power tunnel 131 passes through the mountain so as to drive the gravity energy storage element 900 to move smoothly. The rail 101 of the inclined section 130 passes through the power tunnel 131 and can guide the movement of the gravitational energy storage element 900 . The power tunnel 131 is provided with a tunnel inner wall, and the bottom stator 210 is fixed between two rails 101 in the tunnel, that is, the tunnel bottom 1311 is partially formed between the two rails 101 in the tunnel . The top stator 220 is fixed on the top of the inner wall of the tunnel, that is, the top of the inner wall of the tunnel constitutes the tunnel top 1312 . The side stator 230 is fixed on the side of the inner wall of the tunnel, and the inner wall of the tunnel has two opposite sides, that is, two opposite tunnel sides 1313 are arranged in the power tunnel 131, and the two sides The stators 230 are respectively fixed to the two tunnel sides 1313 . The power tunnel 131 corresponds to a part of the inclined section 130 , that is, the length of the power tunnel 131 is much shorter than that of the inclined section 130 . The length of the power tunnel 131 is part of the length of the inclined section 130. For example, the total length of the inclined section 130 is 6000m, and the length of the power tunnel 131 is 1000m to 3000m. The length of the power tunnel 131 is based on the technology of the large thrust linear motor. Depending on the level, the design goal is to make the power tunnel 131 as short as possible, but it is limited by the technical level of the linear motor used in each stage. The portion of the inclined section 130 outside the powered tunnel 131 constitutes a non-powered track section, and the non-powered track section occupies a larger area of the inclined section 130 .

The length of the power tunnel 131 is much smaller than the length of the inclined section 130, correspondingly covering the place where the inclined section 130 connects to the low-altitude section 110, so that the linear motor mover and the linear motor stator can be coupled to drive the energy storage element to rise on the mountain slope , realize the conversion of electric energy into the potential energy of the solid gravity energy storage element 900, and facilitate the gravity energy storage element 900 to drive and cooperate with the power tunnel 131 to slide down, so that the gravity potential energy is converted into electric energy.

It can be understood that when the bottom stator 210, top stator 220, and side stator 230 in the power tunnel 131 cooperate with the bottom mover 310, top mover 320, and side mover 330 of the gravity energy storage element 900 respectively, a straight line can be achieved. The motor drives the gravitational energy storage element 900 to rise from the low-altitude section 110 to the high-altitude section 120, so that the linear motor consumes electric energy to do work, and the gravitational energy storage element 900 rises to the high-altitude section 120, thereby storing gravitational potential energy. When the gravity energy storage element 900 descends from the high altitude to the low altitude section 110, the gravity energy storage element 900 drives the bottom mover 310, the top mover 320 and the side mover 330 to descend under the gravitational work, and the bottom mover 310, The top mover 320 and the side mover 330 cooperate with the bottom stator 210 , the top stator 220 and the side stator 230 in the power tunnel 131 respectively to realize electromagnetic excitation to convert gravitational potential energy into electrical energy.

Please refer to FIG. 2 , FIG. 3 and FIG. 4 , in this embodiment, the bottom stator 210 , the top stator 220 and the side stator 230 are all stators of a linear motor with high thrust density and high thrust. The bottom stator 210 is installed between the two rails 101 along the length direction of the power tunnel 131, and the top stator 220 and the side stator 230 are installed on the inner wall of the tunnel along the length direction of the power tunnel 131 and are inside the power tunnel 131.

In this embodiment, multiple gravitational energy storage elements 900 can be continuously arranged in the power tunnel 131, that is, during the process of energy storage or energy release, the sum of the lengths of the movers of the multiple gravitational energy storage elements 900 is approximately equal to The length of the stator in the power tunnel 131 is such that the length of multiple movers is coupled with the full length of the stator in the power tunnel 131, so that the entire length of the stator of the long linear motor is in a load state, so as to obtain a high power factor for the operation of the linear motor and high efficiency. There are always a plurality of continuously moving gravitational energy storage elements 900 on the power tunnel 131, so that the gravitational energy storage elements 900 continuously move along the gravitational energy storage element moving track 100 throughout the whole process, thereby forming a solid gravity flow.

It can be understood that the solid gravity flow carrying device 1000 provided by this application can be applied to a solid gravity energy storage system with large altitude difference, and has the following beneficial effects:

1. Make full use of natural conditions to make the terrain with large altitude difference a gravity energy storage resource

1.1 Due to the effect of the earth's gravity, the gravitational energy storage element 900 naturally possesses potential energy. The greater the relative value of the altitude of the gravity energy storage element 900, the greater the absolute value of its potential energy; when the gravity energy storage element 900 stays at a certain altitude, the potential energy exists at a certain altitude, that is, energy storage is realized;

Since solid is the most basic material in nature, sand, soil, stone, etc. are the basic materials of the earth. They are very abundant, easy to obtain materials, and easy to process in engineering. The shape will not change with time, and the quality will not disappear with time; The material is cheap for the gravity energy storage element 900 .

1.2 Since the potential energy density of the gravitational energy storage element 900 depends on the absolute value of the height difference of the location of the gravitational energy storage element 900 , that is, the altitude difference determines the potential energy density of the gravitational energy storage element 900 . That is to say, choosing a large altitude difference is the optimal condition for increasing the potential energy storage density of the gravitational energy storage element 900 .

Because plateaus and mountains are the basic forms of the earth, they are common in different degrees in all continents of the world; Asian plateaus and mountains are particularly rich in geographical resources (in my country, the Qinghai-Tibet Plateau and the Pamirs have an edge length of 6,000-7,000 kilometers, The altitude difference between the plains and basins on the edge of the plateau can reach 2000-3000m, and the terrain conditions are superior, which is very conducive to the site selection of solid gravity energy storage power stations with large altitude differences. The actual project demand is less than 500 kilometers), which is enough to support the ultra-large-scale energy storage required for energy transformation.) (The average height difference between the Qinghai-Tibet Plateau, the Pamirs and the surrounding plains and basins can reach more than 3000m, so that the solid gravity storage energy resources are extremely rich).

2. Innovative engineering technology means

The present invention subversively creates a method for forming a solid gravity flow, which morphs the solid gravity flow, so that the solid gravity flow is similar to a liquid flow (water flow), and is controlled at high and low altitudes under the action of power or gravity Continuous flow (movement) without intervals, according to different time zones of energy storage or energy release, control the flow direction to convert electricity into power, make solid weights rise to high places, change the potential energy of gravity, and realize energy storage; or solid The weight is lowered to a low place, and the gravity of the solid is converted into electrical energy, which is released to the grid. The principle is similar to that of pumped storage power plants based on the gravity flow of liquids. However, solid gravity energy storage with large altitude difference based on solid gravity flow utilizes the rich geographical resources of plateaus, mountains and surrounding edges, and has sufficient resource guarantee; the terrain has a large altitude difference, and the solid material has a large mass density and stable properties, which can The supply quantity is almost unlimited. Therefore, solid gravity energy storage can be applied to ultra-large-scale energy storage, can undertake the energy storage scale requirements required by the complete energy transformation, and can provide key energy storage technology support for the energy transformation revolution.

1. Design a solid gravitational energy storage element 900 with front and rear pushing bosses, side movers 330 on the left and right sides, top mover 320 on the top, bottom mover 310 and rolling wheels at the bottom, so that the gravity energy storage element 900 It can move continuously, and it is convenient for the gravity energy storage element 900 to bear the thrust of the linear motor in all directions in the power tunnel 131, so as to increase the driving efficiency;

2. Choose a terrain with a large altitude difference, and build a lifting channel for the solid gravity energy storage element 900 between high and low altitudes;

3. The solid gravity energy storage element 900 is connected back and forth on the lifting channel, and connected in series throughout the whole process. When pushed and linked under the action of power or gravity, the solid gravity energy storage element 900 is fluidized to form a solid gravity flow;

4. Set a power tunnel 131 powered by a linear motor (called a power tunnel) in the low-altitude section 110 of the lifting passage of the solid gravity energy storage element 900. The power tunnel 131 absorbs the power of the power grid and exerts a rising force on the solid gravity energy storage element 900. power, or absorb the gravity of the solid gravity energy storage element 900 into electricity, and feed it back to the grid;

5. Set up driving arrays in the high and low altitude storage yards for the collection of solid gravity energy storage elements 900 from each stacking position to the track or disperse from the track to each stacking position;

6. Under the control of the system control unit, the converging and dispersing speeds of the solid gravity energy storage elements 900 in high and low altitude stockyards are coordinated and synchronized with the flow velocity of the solid gravity flow, so that the solid gravity flow can perform the functions of energy storage or energy release One-way continuous movement is maintained in the time zone, so that the system can obtain the highest operating efficiency.

Use the altitude difference between plateaus, mountains and surrounding plains and basins to realize the movement and stay of the gravity energy storage element 900 between high altitudes and low altitudes, so that the potential energy can be changed and stored to achieve the purpose of energy storage . Therefore, the engineering technology applicable to the lifting and transferring of a large number of gravity energy storage elements 900 within a unit time between large altitude differences is the innovation key of this application.

In the present invention, the lifting channel of the solid gravity energy storage element 900 is divided into a dynamic tunnel section and a non-dynamic track section for generating power; the dynamic tunnel section is a dynamic tunnel 131, and the solid gravity flow on the lifting channel of the solid gravity energy storage element 900 generated by the dynamic tunnel section rises The total power required, or the total thrust of the solid gravity flow that carries the solid gravity energy storage element 900 in the lifting channel. The power tunnel section is powered by a large-thrust induction linear motor, which minimizes the length of the active power section of the power tunnel (shortening the length of the high-thrust linear motor), and strengthens the roadbed treatment of the power tunnel, so that it can bear the solid gravity of the whole lifting channel The thrust applied by the gravity of the energy storage element 900, because the power tunnel section bears the thrust applied by the gravity of the solid gravity energy storage element 900 in the whole liftway, makes the gravity of the solid gravity energy storage element 900 in the non-power track section only apply to the subgrade. Pressure, instead of applying thrust to the low altitude direction; thus greatly simplifying the subgrade treatment of the non-powered track section, reducing its cost, and minimizing system investment. It is foreseeable that the length of the power tunnel (power tunnel 131) is only a section of the length of the solid gravity energy storage element 900 lifting channel, although the investment density will also be concentrated to this section, the concentration is not proportional, and it can be compared with the whole power structure. Save a lot of investment.

Further, please continue to refer to FIG. 2 , FIG. 3 and FIG. 4 , the tunnel side 1313 is provided with a first limiting rail 1314 and a second limiting rail 1315 , and the first limiting rail 1314 and the second limiting rail 1314 The rail 1315 extends along the length direction of the power tunnel 131, the first limiting rail 1314 and the second limiting rail 1315 are respectively close to the tunnel top 1312 and the tunnel bottom 1311, and the side of the gravity energy storage element 900 is provided There are a first side limiting wheel 901 and a second side limiting wheel 902. After the gravity energy storage element 900 enters the power tunnel 131, the first side limiting wheel 901 and the second side limiting wheel The limiting wheels 902 respectively cooperate with the end surface of the first limiting rail 1314 and the limiting end surface of the second limiting rail 1315 .

In this embodiment, the first limiting rail 1314 and the second limiting rail 1315 are protruded from the inner wall of the tunnel. The side stator 230 is disposed between the first limiting rail 1314 and the second limiting rail 1315 on the same side. Both the first limiting rail 1314 and the second limiting rail 1315 are limiting rails. The first limiting rail 1314 has a first limiting end surface away from the inner wall of the tunnel, and the second limiting rail 1315 has a second limiting end surface away from the inner wall of the tunnel. The first limiting end surface is rollingly matched with the first side limiting wheel 901 , and the second limiting end surface is rollingly matching with the second side limiting wheel 902 , thereby limiting the side stator 230 The gap between the side mover 330 and the side mover 330 is kept within a certain range to ensure stable electromagnetic coupling between the side stator 230 and the side mover 330 , thereby ensuring driving efficiency.

In this embodiment, both the first side limiting wheel 901 and the second side limiting wheel 902 at least partially protrude from the side of the gravity energy storage element 900 . The rotating shaft of the first side limiting wheel 901 is parallel to the first limiting end surface, and the rotating axis of the second side limiting wheel 902 is parallel to the second limiting end surface. The outer peripheral surface of the first side limiting wheel 901 cooperates with the first limiting end surface, and the outer peripheral surface of the second side limiting wheel 902 cooperates with the second limiting end surface. The side mover 330 is located between the first side limiting wheel 901 and the second side limiting wheel 902 on the same side.

Specifically, the gravity energy storage element 900 is provided with a box body 903, and the box body 903 has a filling cavity, and the filling cavity is filled with solid materials. The track wheels are arranged at the bottom of the box body 903 . The bottom mover 310 is disposed at the bottom of the box body 903 and between two rows of the track wheels 904 . The top of the box body 903 is provided with two opposite stacking bosses 909, a fixing groove is formed between the two stacking bosses 909, and the top mover 320 is located in the fixing groove. The two stacking bosses 909 are respectively adjacent to opposite side walls of the box body 903 . The first side limiting wheel 901 is disposed on the stacking boss 909 and partially protrudes relative to the side wall of the box body 903 . The second side limiting wheel 902 is disposed on the side wall of the box 903 and adjacent to the bottom of the box 903 . The side mover 330 is fixed on the side wall of the box body 903, and is located between the first side limiting wheel 901 and the second side limiting wheel 902 on the same side.

Further, please refer to FIG. 5 , a low-altitude arc section 140 is set between the slope section 130 and the low-altitude section 110 , and a high-altitude arc section is set between the slope section 130 and the high-altitude section 120 150.

In this embodiment, the low-altitude arc section 140 connects the inclined section 130 and the low-altitude section 110 so that the gravitational energy storage element 900 can enter the inclined section 130 from the low-altitude section 110 smoothly. The high-altitude arc section 150 connects the inclined section 130 and the high-altitude section 120 so that the gravitational energy storage element 900 can enter the inclined section 130 from the high-altitude section 120 smoothly. The power tunnel 131 is set at the part of the inclined section 130 close to the low-altitude section 110, so that multiple gravitational energy storage elements 900 can quickly enter the inclined section 130 from the low-altitude arc section 140. The power tunnel 131 is used to obtain the power for pushing up and ascending through the power tunnel 131, so that multiple gravity energy storage elements 900 are continuously pushed up to the high-altitude section 120 after passing through the power tunnel 131 to realize energy storage.

It can be understood that obtaining high energy storage conversion efficiency is a key indicator of energy storage, which is related to the economy of energy storage. The solid gravity flow equipment provided by this application uses a linear motor as the power equipment for the lifting and carrying channel of the solid gravity energy storage element 900 , improving energy conversion efficiency is an important feature of this application.

Linear motors have been applied in the field of rail transit, reflecting the comprehensive performance advantages of linear motors. However, the energy conversion efficiency of linear motors is lower than that of rotary motors, which is a shortcoming that must be overcome as an energy storage application.

The full-area coupling between the inner diameter of the stator and the outer diameter of the rotor of the rotating electrical machine, the tangential thrust generated by the traveling wave magnetic field of the stator all effectively acts on the rotor; the value of the air gap between the stator and the rotor is small, and the reluctance loss of the air gap is small, efficient.

However, in existing linear motor applications such as maglev trains and electromagnetic catapults, the stator of the linear motor is coupled with the mover, and the length of the electromagnetic thrust generated is only a small part of the stator’s electrified length, and the rest of the stator’s electrified length is free. The load is powered on, resulting in low power factor and reduced efficiency.

Please refer to Fig. 1 and Fig. 2, the bottom stator 210 of the power tunnel 131 of the solid gravity flow carrying device 1000 provided by the present application is fully coupled with the length of the bottom movers 310 of the multiple gravity energy storage elements 900, and keeps the bottom The moving out and moving in of the mover 310 are balanced in real time, so that the degree of coupling is constant. The top stator 220 is fully coupled with the length of the top movers 320 of multiple gravitational energy storage elements 900, and keeps the real-time balance of moving out and moving in of the top movers 320, so that the coupling degree is constant, and the side stators 230 and multiple The length of the side mover 330 of each gravity energy storage element 900 is fully coupled, and the moving out and moving in of the side mover 330 is kept balanced in real time, so that the coupling degree is constant. The entire length section between the stator and the mover in the power tunnel 131 generates effective thrust, thereby greatly improving the energy conversion efficiency of the linear motor as an energy storage application.

The power tunnel 131 is equipped with a stator on the inner wall of the tunnel and the rail 101. The stator has high stability and strength. The bottom mover 310, the top mover 320 and the side mover 330 are limited to the first side limiter wheel 901 and the second side limiter wheel 902. Respectively with the first limit rail 1314, the second limit rail 1315, so that the bottom mover 310, the top mover 320 and the side mover 330 are respectively connected to the bottom stator 210, the top stator 220 and the side stator 230. The air gap allows for smaller design values, further increasing efficiency.

The power tunnel 131 is the power core of the system. When the system stores energy, it converts the electric power of the grid into the power to push the gravity energy storage element 900 and move up along the gravity energy storage element moving track 100; when the system releases energy, the power tunnel 131 converts the gravity A plurality of gravitational energy storage elements 900 on the moving track 100 of the energy storage element form the mechanical thrust of the solid gravity flow and convert it into electricity and feed it back to the grid.

The power tunnel 131 is the most important part of the system. Increasing the thrust density of the active power section and shortening the length of the power tunnel 131 can reduce the underground foundation engineering cost of the gravity energy storage element moving track 100, reduce the cost of the power tunnel 131, and reduce the operation In order to increase the thrust density per unit length of the power tunnel 131 and shorten the length of the power tunnel 131, the solid gravity flow carrying device 1000 of the present application achieves the above-mentioned purpose in the following ways:

1. Linear motor stators are installed on the inner wall of the tunnel and the bottom, top, and both sides of the tunnel, and linear motor motors composed of induction plates are installed on the bottom, top, and both sides of the solid gravity energy storage element. In this way, the electromagnetic coupling area per unit length of the power tunnel is increased, and the tangential thrust per unit length is increased.

As a specific embodiment, the altitude of the low-altitude section 110 of the present application is 1200m, the altitude of the high-altitude section 120 is 4200m, the altitude difference between the low-altitude section 110 and the high-altitude section 120 is 3000m, and the slope of the inclined section 130 is 30° , the slope length of the inclined section 130 is 6000m.

The cross-section of the gravity energy storage element 900 is set according to road transportation, for example, the width of the gravity energy storage element 900 is 3.2m, the height of the gravity energy storage element 900 is 3.2m, and the cross-sectional area of the gravity energy storage element 900 is 10.24m The energy storage element 900 has a cross section of 10 m2.

The gravity energy storage element 900 includes a box body 903, the box body 903 is a steel box-type shell, the inside of the box body 903 is filled with waste rocks, sand, and the average mass density of the box body 903 and the inner filler is 2500kg/m Weight = 25000 kg/m.

The ramp length total load G2.5=25000(kg)*6000(m)=150000000kg of the inclined section 130, the total thrust F2.5=150000000(kg )×9.8×sin30=735(MN).

The bottom stator 210 and the bottom mover 310, the top stator 220 and the top mover 320, the side stator 230 and the side mover 330 have a tangential thrust per unit area of 0.05MN/m2, and the gravity energy storage element is 900 The total side length of the surrounding area is 7.2m, and the tangential thrust per unit length of the power tunnel is 0.36MN.

The length of the power tunnel 131 is L=735(MN)÷0.36MN=2041.67m.

Considering that the acceleration thrust margin is multiplied by 1.2 coefficient and the length L of the power tunnel section 131 is 2500m, the length of the power tunnel is about 40% of the total length 6000m of the gravity energy storage element moving track 100 .

Let the solid gravity flow velocity V4=4 (m/s) formed by multiple energy storage elements.

The required total power of the linear motor composed of the bottom stator 210 and the bottom mover 310, the side stator 230 and the side mover 330, the top stator 220 and the top mover 320 is P4=735(MN)×4(m/s ) = 2940000 (kw).

That is to say, the unit can store 2.94 million kWh of energy per hour (theory), 1600 hours per year, and store 4,704 million kWh of energy.

Further, referring to Fig. 1, Fig. 2 and Fig. 4, the moving track 100 of the gravitational energy storage element is provided with two side-by-side rails 101, and the bottom of the gravitational energy storage element 900 is provided with two rows of track wheels 904, two A row of the track wheels 904 is matched with the two rails 101 respectively, and the bottom mover 310 is located between the two rows of the track wheels 904 . When the gravitational energy storage element 900 passes through the power tunnel 131 , the bottom mover 310 is electromagnetically coupled with the bottom stator 210 to drive the gravitational energy storage element 900 to move along the two rows of rails 101 .

Further, please refer to FIG. 5, FIG. 6 and FIG. 7, the low-altitude section 110 has a low-altitude collection and distribution section 111, a low-altitude buffer delivery section 112, and a low-altitude pick-up section 113 connected in sequence, and the low-altitude collection and distribution section 111 , for collecting and distributing the gravity energy storage element 900, and the low-altitude buffer transportation section 112 transfers and transports the gravity energy storage element 900 between the low-altitude collection and distribution section 111 and the low-altitude pick-up section 113 , the low-altitude transfer section 113 is used to push the gravitational energy storage element 900 to the inclined section 130 during energy storage.

In this embodiment, the low-altitude collecting and distributing section 111 collects and distributes the gravitational energy storage elements 900 transported to the low-altitude section 110 and places them on the rails, so that the gravitational energy storing elements 900 are stacked and stored, or the stacked The stored gravitational energy storage elements 900 are distributed on the track. The low-altitude buffer transportation section 112 transports the gravity energy storage elements 900 arranged in the low-altitude collection and distribution section 111 to the low-altitude transfer section 113, or transports the gravity energy storage elements 900 of the low-altitude transfer section 113 to the low-altitude collection and distribution section Section 111 is distributed and arranged. The low-altitude pick-up section 113 is received from the descending gravity energy storage element 900 of the low-altitude arc section 140 and transported to the low-altitude buffer delivery section 112, or the gravity energy storage unit transported by the low-altitude buffer delivery section 112 Element 900 is advanced to low altitude arc segment 140 .

Further, the linear motor stator group includes a low-altitude motor stator 290 fixed to the low-altitude collection and distribution section 111, the low-altitude buffer delivery section 112 and the low-altitude pick-up section 113, and the low-altitude motor stator 290 is connected to the bottom The mover 310 is electromagnetically coupled to drive the gravitational energy storage element 900 to move in the low-altitude collection and distribution section 111 , the low-altitude buffer delivery section 112 and the low-altitude transfer section 113 .

In this embodiment, the low-altitude motor stator 290 is fixed between two rows of rails 101, so as to facilitate the electromagnetic coupling between the low-altitude motor stator 290 and the bottom mover 310 fixed at the bottom of the gravity energy storage element 900 . The low-altitude motor stator 290 of the low-altitude collection and distribution section 111 is electrically connected to different converters in the low-altitude collection and distribution section 111 , the low-altitude buffer delivery section 112 and the low-altitude transfer section 113 . Specifically, the low-altitude motor stator 290 of the low-altitude collection and distribution section 111 is electrically connected to N+1 different converters 2902 of the collection and distribution section, and the low-altitude motor stator 290 of the low-altitude buffer delivery section 112 is electrically connected to the buffer section converter 2903, the low-altitude motor stator 290 of the low-altitude transfer section 113 is electrically connected to the transfer section converter 2904, so that the gravity energy storage element 900 operates in the low-altitude collection and distribution section 111, the low-altitude buffer delivery section 112 and The low-altitude pick-up section 113 has different moving speeds, so as to facilitate the transportation of the gravity energy storage element 900 in the low-altitude section 110 .

Further, the high-altitude section 120 has a high-altitude collection and distribution section 121, a high-altitude buffer delivery section 122, and a high-altitude pick-up section 123 connected in sequence, and the high-altitude collection and distribution section 121 is used for collecting and distributing the gravity energy storage element 900 Transportation, the high-altitude buffer transportation section 122 transfers and transports the gravity energy storage element 900 between the high-altitude collection and distribution section 121 and the high-altitude pick-up section 123, and the high-altitude pick-up section 123 is used for release Push the gravitational energy storage element 900 to the inclined section 130 when possible.

In this embodiment, the high-altitude collecting and distributing section 121 collects and distributes the gravitational energy storage elements 900 transported to the high-altitude section 120 on the rails, so that the gravitational energy storing elements 900 are stacked and stored, or the stacked The gravitational energy storage elements 900 are distributed on the track. The high-altitude buffer transport section 122 transports the gravity energy storage elements 900 distributed in the high-altitude collection and distribution section 121 to the high-altitude transfer section 123, or transports the gravity energy storage elements 900 of the high-altitude transfer section 123 to the high-altitude collection and distribution section 121 Distributed placement. The high-altitude transfer section 123 is received from the raised gravity energy storage element 900 of the high-altitude arc section 150 and transported to the high-altitude buffer delivery section 122, or the gravity energy storage unit transported by the high-altitude buffer delivery section 122 Element 900 is advanced to high altitude arc segment 150 .

Further, the linear motor stator group includes a high-altitude motor stator 280 fixed to the high-altitude collection and distribution section 121, the high-altitude buffer delivery section 122 and the high-altitude transfer section 123, and the high-altitude motor stator 280 is connected to the bottom The mover 310 is battery-coupled to drive the gravitational energy storage element 900 to move in the high-altitude collection and distribution section 121 , the high-altitude buffer delivery section 122 and the high-altitude pick-up section 123 .

In this embodiment, the high-altitude motor stator 280 is fixed between two rows of rails 101, so as to facilitate the electromagnetic coupling between the high-altitude motor stator 280 and the bottom mover 310 fixed at the bottom of the gravity energy storage element 900 . The high-altitude motor stator 280 of the high-altitude collection and distribution section 121 is electrically connected to different converters in the high-altitude collection and distribution section 121 , the high-altitude buffer delivery section 122 and the high-altitude transfer section 123 . Specifically, the high-altitude motor stator 280 of the high-altitude collection and distribution section 121 is electrically connected to N+1 different converters 2802 of the collection and distribution section, and the high-altitude motor stator 280 of the high-altitude buffer delivery section 122 is electrically connected to the buffer section inverter 2803, the high-altitude motor stator 280 of the high-altitude transfer section 123 is electrically connected to the transfer section converter 2804, so that the gravity energy storage element 900 operates in the high-altitude collection and distribution section 121, the high-altitude buffer delivery section 122 and The high-altitude pick-up section 123 has different moving speeds, so as to facilitate the transportation of the gravitational energy storage element 900 in the high-altitude section 120 .

Further, the solid gravity flow carrying equipment 1000 also includes a low-altitude braking section 160. The low-altitude braking section 160 is connected to the end of the low-altitude section 110 away from the power tunnel 131 for The gravitational energy storage element 900 of the low-altitude section 110 brakes.

In this embodiment, the low-altitude braking section 160 brakes the gravitational energy storage element 900 that completes the conversion of gravitational potential energy into electrical energy, so that the gravitational energy storage element 900 can be stopped safely, avoiding the gravity energy storage element 900 The inertial kinetic energy can cause collision damage to other objects. The low-altitude braking section 160 brakes the gravitational energy storage element 900 located at the front, so that the gravitational energy storage element 900 that forms a solid gravity flow continuously is braked, which is convenient for multiple gravitational energy storage elements 900 Collect and distribute stacking at low altitudes.

Specifically, please refer to Fig. 8 and Fig. 9, the low-altitude braking section 160 is provided with a braking tunnel 180 and a plurality of braking elements 181 arranged in the braking tunnel 180, and a plurality of the braking elements 181 are arranged in the braking tunnel 180. The moving element 181 successively abuts against each other in the braking tunnel 180. At least one pair of brake pads 182 are arranged on the outer side of the braking element 181. The braking tunnel 180 is provided with the at least one pair of The brake rail 183 matched with the brake pad 182, when the gravitational energy storage element 900 is against the brake component 181 and the at least one pair of brake pads 182 clamp the brake rail 183, the brake The braking element 181 brakes the gravitational energy storage element 900 .

In this embodiment, the braking tunnel 180 at a low altitude is connected to the low-altitude collecting and distributing section 111 . The plurality of braking elements 181 abutting against each other are movable in the braking tunnel 180 so as to absorb the kinetic energy of the gravitational energy storage element 900 . Specifically, the brake component 181 is provided with multiple pairs of brake pads 182 on the left and right side walls. A plurality of pairs of the brake pads 182 are arranged at intervals along two vertical lines on the side wall of the brake component 181 . The brake rails 183 are arranged on the inner wall of the brake tunnel 180 along two straight lines up and down. The brake rails 183 arranged along the upper straight line are matched with the pairs of brake pads 182 arranged along the upper straight line. The brake rails 183 arranged along the lower straight line correspond to the pairs of brake pads 182 arranged along the lower straight line. Each pair of brake pads 182 includes two brake pads that are mutually open and close. When the two brake pads close together to clamp the brake rail 183 , the friction force between the brake pad 182 and the brake rail 183 is used to prevent the brake component 181 from moving. Utilize a plurality of said brake brake elements 181 to abut against, thereby increasing the matching length of a plurality of said brake brake elements 181 and said brake rails 183, to increase the braking force, to effectively form a plurality of solid gravity flow The gravitational energy storage element 900 performs braking.

In this embodiment, the linear motor stator group also includes a track motor stator 270 fixed between the two brake rails 185, and the bottom of the brake element 181 is provided with two brake rails. Two rows of brake element track wheels 184 matched with section rail 185, and the linear motor mover subgroup also includes a reset mechanism that is fixed on the bottom of the brake brake element 181 and is located between the two rows of brake element track wheels 184. The motor mover 370 , the reset motor mover 370 is coupled with the track motor stator 270 to drive the brake component 181 to move and reset along the brake segment rail 185 . When the two brake pads are mutually opened and are out of contact with the brake rail 183, the reset motor mover 370 is coupled with the reset motor stator to drive the brake component 181 to move in the brake tunnel. The reset of the brake component 181 is realized, so that the brake component 181 can brake the gravitational energy storage component 900 next time.

Further, a brake bracket 186 is provided on the outer side of the brake component 181, and at least one driving member 1861 is provided on the brake bracket 186, and each driving member 1861 drives the brake pad 182 to clip Hold the brake rail 183.

In this embodiment, the brake component 181 is provided with two upper and lower brake brackets 186 on the left and right side walls. The upper brake bracket 186 is close to the top of the brake component 181 , and the lower brake bracket 186 is close to the bottom of the brake component 181 . The upper brake bracket 186 is movably connected to the upper row of linearly arranged pairs of brake pads 182 , and the lower brake bracket 186 is movably connected to the lower row of linearly arranged multiple pairs of brake pads 182 . The driving member 1861 exerts a driving force to open or close to the brake pad 182 . The multiple pairs of brake pads 182 in the upper row and the multiple pairs of brake pads 182 in the lower row are staggered to distribute the braking resistance of the brake elements 181 evenly, so that the brake elements form a plurality of pairs of solid gravity flow. The gravitational energy storage element 900 effectively brakes. Two brake brackets 186 are arranged on opposite sides of the brake component 181, and the two brake brackets 186 are respectively close to the top and bottom of the brake component 181, and each brake bracket 186 A plurality of the driving elements and a plurality of pairs of the brake pads 182 are arranged on the top.

Further, please refer to FIG. 10 , the front and rear ends of the gravity energy storage element 900 are respectively provided with a pushing boss 905 and a pushing concave platform 906 , and the pushing boss at the front of the box body 903 of the gravity energy storage element 905 and the pushing concave platform 906 at the rear of the box body 903 of the previous gravity energy storage element 900 abut against each other, and the pushing concave platform 906 at the rear end of the box body 903 of the gravity energy storage element 900 and the latter gravity energy storage element The pushing boss 905 at the front of the box body 903 of the element 900 touches the top, and the gravity energy storage element 900 of the whole process from the low altitude section 110 to the high altitude end touches the top and connects in series, and the whole process is linked under the action of power or gravity, A solid gravity flow is formed.

In this embodiment, the gravitational energy storage element 900 includes a box body 903 and four track wheels 904 (the track wheels 904 may be multiple pairs or groups) that are rotatably connected to the bottom of the box body 903, and the box body 903 is used to accommodate solid gravitational objects. The side movers 330 are fixed on the left and right sides of the box body 903 . The pushing convex platform 905 and the pushing concave platform 906 are respectively arranged in the front and rear sections outside the box body 903 . The rollers are arranged at the outer bottom of the box body 903 , and the top mover 320 is arranged at the outer top of the box body 903 . The box 903 is a rectangular shell. The box body 903 is filled with solid gravitational objects, which can be the most basic materials in nature, for example, the solid gravimetric objects can be sand, soil, stones and the like. The four track wheels 904 roll and cooperate with the two rails 101 of the moving track 100 of the gravity energy storage element respectively, so that the gravity energy storage element 900 can run in the form of solid gravity flow. The gravitational energy storage element 900 can be transferred, stored. Both the box body 903 and the rail wheel 904 are made of steel, so that the gravity energy storage element 900 has a stable structure, durability, low manufacturing cost, and high mass density.

In this embodiment, the pushing convex platform 905 and the pushing concave platform 906 are respectively fixed at the front and rear ends of the box body 903 . The end of the pushing boss 905 away from the box body 903 is provided with an arc-shaped protrusion, while the end of the pushing concave platform 906 is provided with an arc-shaped depression. When the pushing bosses 905 and the pushing concaves 906 of two adjacent gravitational energy storage elements 900 abut against each other, the arc-shaped protrusions and arc-shaped recesses cooperate to facilitate the formation of two adjacent gravitational energy storage elements 900 Effective connection, and then effectively form a solid gravity flow, and after the solid gravity flow has completed the storage of gravitational potential energy or the release of gravitational potential energy, multiple gravitational energy storage elements 900 are quickly separated by arc-shaped protrusions and arc-shaped depressions to realize mutual The rapid separation facilitates the rapid transfer and storage of the gravity energy storage element 900 . Of course, in other embodiments, it is also possible that the end of the pushing boss 905 is provided with an arc-shaped depression, and the end of the pushing concave platform 906 is provided with an arc-shaped protrusion.

Further, the top of the box body 903 is provided with a wheel void area, and the wheel void area is used for accommodating a part of the track wheels 904 when the gravity energy storage elements 900 are stacked on each other.

In this embodiment, four wheel vacant areas are provided on the top of the box body 903 , and the depth of the wheel vacant areas is slightly greater than the height at which the track wheels 904 protrude from the box body 903 . When the gravity energy storage elements 900 are stacked, the part of the track wheel 904 protruding from the box body 903 of one of the gravity energy storage elements 900 is just accommodated in the wheel vacancy area of the other gravity energy storage element 900, and the gravity energy storage element above The bottom of 900 is in contact with the top of the gravitational energy storage element below, so that the stacked gravitational energy storage elements 900 are stacked stably. The wheel vacant area is opened on the stacking boss, so as to facilitate the effective stacking of the gravity energy storage elements 900 .

Further, referring to Fig. 11 and Fig. 12, the embodiment of the present application also provides an energy storage system 2000, the energy storage system 2000 includes the solid gravity flow carrying device 1000, and the energy storage system 2000 also includes a low Altitude storage yard 2100 and high altitude storage yard 2200, the low altitude section 110 runs through the low altitude storage yard 2100, the high altitude section 120 runs through the high altitude storage yard 2200, when the energy storage system 2000 stores energy , the low-altitude storage yard 2100 transports the gravity energy storage element 900 to the low-altitude section 110, and the high-altitude storage yard 2200 receives and stores the gravity energy storage element 900 from the high-altitude section 120, When the solid gravity energy storage system 2000 releases energy, the high-altitude storage yard 2200 transports the gravity energy storage element 900 to the high-altitude section 120, and the low-altitude storage yard 2100 transports the gravity energy storage element 900 from the low-altitude section 110 The gravitational energy storage element 900 is received and stored.

In this embodiment, multiple gravitational energy storage elements 900 on the whole lifting track are rollingly matched with the gravitational energy storage element moving track 100, that is, multiple gravitational energy storage elements 900 can be driven continuously along the gravitational energy storage element moving track 100 The bottom stator 210, top stator 220, and side stator 230 in 131 respectively cooperate with the bottom mover 310, top mover 320, and side mover 330 of the gravity energy storage element 900 to push up the electromagnetic thrust generated, and multiple gravity The energy storage element 900 can also be pushed down continuously along the gravitational energy storage element moving track 100 under the action of gravity. When the gravity energy storage element 900 enters the power tunnel 131 of the inclined section 130, the gravity energy storage element 900 is continuously pushed, or the gravity energy storage element 900 is continuously lowered for linkage. The plurality of gravity energy storage elements 900 are arranged continuously and move on the inclined section 130 , so that the plurality of gravity energy storage elements 900 form a solid gravity flow and flow on the inclined section 130 . When the solid gravity flow ascends and flows along the inclined section 130 , the excess electric energy of the grid is converted into the gravitational potential energy of the multiple gravitational energy storage elements 900 , and the gravitational potential energy of the multiple gravitational energy storage elements 900 is stored. When the solid gravity flow descends in the inclined section 130 , the gravitational potential energy of the multiple gravitational energy storage elements 900 is converted into electric energy and fed back to the grid.

In this embodiment, the low-altitude stockyard 2100 is used to store the gravity energy storage element 900 that descends to a low altitude when the system releases energy, and the gravity storage element 900 of the low-altitude stockyard 2100 will be stored again when the system stores energy next time. The energy element 900 ascends to high altitudes. The high-altitude stockyard 2200 is used to store the gravity energy storage element 900 that rises to a high altitude when the system is storing energy, and the gravity energy storage element 900 of the high-altitude stockyard 2200 will be lowered to a low level when the system is released next time. altitude.

Further, the low-altitude stacking yard 2100 is provided with a low-altitude stacking area docked with the low-altitude section 110, and the low-altitude stacking area is used to stack the gravity energy storage elements 900 when the system is released. Storage, the high-altitude stacking yard 2200 is provided with a high-altitude stacking area docked with the high-altitude section 120, and the high-altitude stacking area is used for stacking and storing the gravity energy storage elements 900 during system energy storage .

In this embodiment, the low-altitude palletizing area receives the gravitational energy storage elements 900 from the low-altitude collection and distribution section 111, and stacks the gravitational energy storage elements 900 in multiple rows and columns to save floor space. When the energy storage system 2000 needs to release gravitational potential energy and feed back electric energy to the grid, the gravity energy storage element 900 at high altitude flows to the low altitude collection and distribution section 111 in the form of solid gravity flow through the gravity energy storage element moving track 100, and In the low-altitude collecting and distributing section 111, it is transferred and stacked to the low-altitude palletizing area. When the energy storage system 2000 needs to convert the electrical energy of the grid into gravitational potential energy for storage, the gravity energy storage elements 900 stacked and stored in the low-altitude palletizing area are transferred to the low-altitude distribution section 111, and are continuously stored in the form of solid gravity flow. Stationary flow transport to high altitudes to achieve gravitational potential energy storage. The high-altitude palletizing area receives the gravitational energy storage elements 900 from the high-altitude distribution section 121, and stacks the gravitational energy storage elements 900 in multiple rows and columns to save floor space. When the energy storage system 2000 needs to release gravitational potential energy and feed back electric energy to the grid, the gravity energy storage element 900 in the high-altitude palletizing area is transferred to the high-altitude distribution section 121, and passes through the high-altitude distribution section 121 in the form of solid gravity flow. The gravitational energy storage element moves the track 100 to flow to lower altitudes.

Further, both the low-altitude stacking area and the high-altitude stacking area are provided with a transverse track beam 2300, a driving cart 2310 cooperating with the transverse track beam 2300, a left palletizing trolley coordinating with the trolley 2310 and a The right stacking crane and the loading and unloading crane, the left and right palletizing cranes run on the left and right sides of the low altitude section 110 or the high altitude section 120, and the loading and unloading crane runs on the low altitude section 110 or above the high-altitude section 120 to unload the gravity energy storage element 900 on the low-altitude section 110 or the high-altitude section 120 to the low-altitude section 110 or the high-altitude section 120 On the left and right sides, the left palletizing crane and the right palletizing crane respectively stack the gravity energy storage elements 900 to the stacking areas on both sides of the low altitude section 110 or the high altitude section 120 .

In this embodiment, the transverse track beam 2300 can guide the movement of the left palletizing crane, so that the left palletizing crane can move in the left stacking area to transfer or place the gravity energy storage element 900 in the left stacking area. The transverse track beam 2300 can move and guide the right palletizing vehicle, so that the right palletizing vehicle can move in the stacking area on the other side, so as to transfer or place the gravity energy storage element 900 in the stacking area on the other side, so that at low altitude Both the palletizing area and the high-altitude palletizing area have left and right stacking areas for stacking and placing the gravity energy storage elements 900 , or quickly transfer the gravity energy storage elements 900 from the left and right stacking areas to the gravity energy storage element moving track 100 .

In this embodiment, the loading and unloading crane can move left and right, so as to lift the gravity energy storage element 900 and transfer the gravity energy storage element 900 to the left and right sides of the track of the low-altitude collecting and distributing section 111 or the track of the high-altitude collecting and distributing section 121. The loading and unloading crane is provided with a hook, which can lift the gravity energy storage element 900, so as to transfer and stack the gravity energy storage element 900 for storage.

Further, the energy storage system 2000 also includes a system main controller 2400, a grid access device 2500 and a grid, the grid access device 2500 is electrically connected to the linear motor stator group, and the grid access device 2500 also The grid is connected to absorb electric energy of the grid through the linear motor stator set and the linear motor mover set, or to release electric energy to the grid.

In this embodiment, the system main controller 2400 controls the grid access device 2500 to input the electrical energy of the grid to the linear motor stator group and the linear motor mover group to generate power, so that the gravitational energy storage element 900 in the entire slope section 130 can The form of solid gravity flow is transferred from low altitude to high altitude, so as to convert the electrical energy of the grid into kinetic energy, change the potential energy of the solid gravity energy storage element 900, and store it. The system main controller 2400 also controls the electronic stator group and the linear motor mover group to push the gravity energy storage element 900 at high altitude to the inclined section 130 of the gravity energy storage element moving track 100, so that the gravity energy storage of the entire inclined section 130 The element 900 is transported from high altitude to low altitude in the form of solid gravity flow, so that the gravitational potential energy is converted into electrical energy, and the control grid access device 2500 receives the electrical energy generated by the coupling of the active power stator and the active power mover and feeds it back to the grid. The energy storage system 2000 also includes a first active power converter 2809, a second active power converter 2808, a third active power converter 2807, and a fourth active power converter electrically connected to the system main controller 2400. 2806, the first active power converter 2809, the second active power converter 2808, the third active power converter 2807, and the fourth active power converter 2806 are electrically connected to the bottom stator 210, the top stator 220 and the two A side stator 230 to control the power of the power tunnel.

Further, the energy storage system 2000 also includes a low-altitude stockyard control module 2600 and a high-altitude stockyard control module 2700, the low-altitude stockyard control module 2600 is used to control the gravity energy storage of the low-altitude stockyard 2100 The element 900 is separated or loaded from the low-altitude section 110, and the high-altitude stockyard control module 2700 is used to control the separation or loading of the gravity energy storage element 900 of the high-altitude stockyard 2200 from the high-altitude section 120, so The main controller is electrically connected to the low-altitude stockyard control module 2600 and the high-altitude stockyard control module 2700. The low-altitude stockyard control module 2600 controls the operation of the gravity energy storage element 900 of the low-altitude stockyard 2100 . The high-altitude stockyard control module 2700 controls the movement of the gravity energy storage element 900 of the high-altitude stockyard 2200, so as to facilitate the automatic energy storage or energy release of the energy storage system 2000.

The above is the preferred implementation mode of the application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the application, some improvements and modifications can also be made, and these improvements and modifications are also considered as protection of the application. scope.

Claims

A solid gravity flow carrying device, characterized in that the solid gravity flow carrying device includes a plurality of gravity energy storage elements, a gravity energy storage element moving track, a linear motor stator group and a linear motor mover group, and the gravity energy storage The component moving track is used to guide the lifting and moving of the gravitational energy storage component. The moving track of the gravitational energy storage component has a low-altitude section and a high-altitude section opposite to the low-altitude section, and is located between the low-altitude section and the high-altitude section. The inclined section between them is provided with a power tunnel, the power tunnel has a tunnel bottom, a tunnel top opposite to the tunnel bottom, and two tunnel sides, and the linear motor stator group includes The bottom stator, the top stator fixed on the top of the tunnel and the side stator fixed on the side of the tunnel, the linear motor mover group includes a bottom mover fixed to each gravity energy storage element, a top stator The mover and the side mover, the bottom mover, the top mover and the side mover are respectively fixed on the bottom, top and side of the gravity energy storage element. When continuously pushing into the power tunnel, the bottom mover, top mover and side mover are electromagnetically coupled to the bottom stator, top stator and side stator respectively to convert electric energy into driving power to drive A plurality of the gravity energy storage elements continue to continuously push and move to the high altitude section, and when the plurality of gravity energy storage elements are continuously pushed into the power tunnel from the high altitude section, the plurality of gravity energy storage elements The element is continuously pushed through the power tunnel under the action of gravity, and the bottom mover, top mover and side mover are respectively electromagnetically coupled to the bottom stator, top stator and side stator to convert mechanical kinetic energy into Electric energy, and the multiple gravity energy storage elements continue to push and move to the low-altitude section continuously, waiting to be raised to the high-altitude section power tunnel next time.
The solid gravity flow carrying device according to claim 1, characterized in that, the side of the tunnel is provided with a first limiting rail and a second limiting rail, and the first limiting rail and the second limiting rail are along the The power tunnel extends in the length direction, the first limiting rail and the second limiting rail are respectively close to the tunnel top and the tunnel bottom, and the side of the gravity energy storage element is provided with a first side limiting wheel and a The second side limiting wheel, after the gravity energy storage element enters the power tunnel, the first side limiting wheel and the second side limiting wheel respectively contact with the end surface of the first limiting rail Cooperate with the limit of the end face of the second limit rail.
The solid gravity flow carrying device according to claim 1, wherein the power tunnel is arranged at a part of the inclined section close to the low-altitude section.
The solid gravity flow carrying device according to claim 1, wherein the moving track of the gravity energy storage element is provided with two side-by-side rails, and the bottom of the gravity energy storage element is provided with two rows of track wheels, the The track wheels are respectively matched with the rails, and the bottom mover is located between two rows of the track wheels.
The solid gravity flow carrying device according to claim 1, wherein the low-altitude section has a low-altitude collection and distribution section, a low-altitude buffer delivery section, and a low-altitude pick-up section connected in sequence, and the low-altitude collection and distribution section is used To collect and distribute the gravity energy storage elements, the low-altitude buffer transportation section transfers and transports the gravity energy storage elements between the low-altitude collection and distribution section and the low-altitude pick-up section, and the low-altitude pick-up section It is used to push the gravitational energy storage element to the inclined section during energy storage.
The solid gravity flow carrying device according to claim 5, wherein the linear motor stator group includes a low-altitude motor stator fixed to the low-altitude collection and distribution section, the low-altitude buffer delivery section, and the low-altitude pick-up section, so The stator of the low-altitude motor is electromagnetically coupled to the bottom mover to drive the gravity energy storage element to move in the low-altitude collection and distribution section, the low-altitude buffer delivery section and the low-altitude pick-up section.
The solid gravity flow carrying device according to claim 1, wherein the high-altitude section has a high-altitude collection and distribution section, a high-altitude buffer delivery section, and a high-altitude pick-up section connected in sequence, and the high-altitude collection and distribution section is used for For the collection and distribution transportation of the gravity energy storage elements, the high-altitude buffer transportation section transfers and transports the gravity energy storage elements between the high-altitude collection and distribution section and the high-altitude pick-up section, and the high-altitude pick-up section uses to push the gravitational energy storage element to the inclined section when the energy is released.
The solid gravity flow carrying device according to claim 7, wherein the linear motor stator group includes a high-altitude motor stator fixed to the high-altitude collection and distribution section, the high-altitude buffer delivery section, and the high-altitude pick-up section, so The high-altitude motor stator is electromagnetically coupled to the bottom mover to drive the gravity energy storage element to move in the high-altitude collection and distribution section, high-altitude buffer delivery section and high-altitude pick-up section.
The solid gravity flow carrying device according to claim 1, characterized in that, the solid gravity flow carrying device further comprises a low-altitude braking section, and the low-altitude braking section is connected to the low-altitude section away from the power The end of the tunnel is used to brake the gravity energy storage element of the solid gravity flow brake entering the low-altitude section when the system commands the shutdown or the failure shutdown.
The solid gravity flow carrying device according to claim 9, wherein the low-altitude braking section includes a braking tunnel and a plurality of braking elements arranged in the braking tunnel, and a plurality of braking elements are arranged in the braking tunnel. The braking elements are successively pressed against each other in the braking tunnel, and at least one pair of brake pads are arranged on the outside of the braking element, and there are provided in the braking tunnel to cooperate with the at least one pair of brake pads. brake rail, when the gravitational energy storage element bears against the brake brake element, and the at least one pair of brake pads clamps the brake rail, the brake brake element is opposed to the gravitational energy storage element Apply the brakes.
The solid gravity flow carrying device according to claim 10, wherein the linear motor stator group also includes a track motor stator fixed between the two brake rails, and the bottom of the brake component is provided with Two rows of braking element track wheels, the linear motor mover group also includes a reset motor mover fixed on the bottom of the brake element and between the two rows of brake element track wheels, the reset motor The motor is coupled with the track motor stator to drive the braking element to reset.
The solid gravity flow carrying device according to claim 10, wherein a brake bracket is provided on the outer side of the brake component, and at least one driving member is provided on the brake bracket, and each of the driving members corresponds to drive The brake pad clamps the brake rail.
The solid gravity flow carrying device according to claim 12, characterized in that two brake brackets are provided on opposite sides of the brake element, and the two brake brackets are respectively close to the brake brakes. On the top and the bottom of the component, a plurality of the driving parts and a plurality of pairs of the brake pads are arranged on each of the brake brackets.
The solid gravity flow carrying device according to claim 1, characterized in that, the front and rear ends of the gravity energy storage element are respectively provided with a pushing convex platform and a pushing concave platform, and the front part of the gravity energy storage element box is The pushing boss and the pushing concave platform at the rear of the previous gravity energy storage element box abut against each other, and the pushing concave platform at the rear end of the gravity energy storage element box and the latter gravity energy storage element box The front pushing boss touches the top, and the gravity energy storage elements from the low-altitude section to the high-altitude section touch the top and connect in series, and the whole process is linked under the action of power or gravity to form a solid gravity flow.
An energy storage system, characterized in that the energy storage system includes the solid gravity flow carrying device according to any one of claims 1 to 14, and the energy storage system also includes a low-altitude storage yard and a high-altitude storage yard, The low-altitude section runs through the low-altitude stockyard, the high-altitude section runs through the high-altitude stockyard, and when the energy storage system stores energy, the low-altitude stockyard transports the The gravity energy storage element, the high-altitude stockyard receives and stores the gravity energy storage element from the high-altitude section, and when the solid gravity energy storage system releases energy, the high-altitude stockyard sends to the high-altitude The altitude section transports the gravitational energy storage elements, and the low-altitude yard receives and stores the gravitational energy storage elements from the low-altitude section.
The energy storage system according to claim 15, wherein the low-altitude storage yard is provided with a low-altitude stacking area docked with the low-altitude section, and the low-altitude stacking area is used for releasing energy in the system The gravity energy storage elements are stacked and stored, and the high-altitude storage yard is provided with a high-altitude stacking area docked with the high-altitude section, and the high-altitude stacking area is used to store the gravity The energy storage elements are stacked for storage.
The energy storage system according to claim 16, characterized in that, both the low-altitude palletizing area and the high-altitude palletizing area are equipped with a transverse rail beam for driving, a left stacking crane and a The right palletizing crane and the loading and unloading crane, the left and right palletizing cranes run on the left and right sides of the low-altitude section or the high-altitude section, and the installation position of the loading and unloading crane is lower than that of the low-altitude section. section or the transverse track beam of the high-altitude section runs several meters below between the left and right stacking carriages to unload the gravity energy storage elements on the low-altitude section or the high-altitude section to the On the left and right sides of the low-altitude section or the high-altitude section, the left palletizing crane and the right palletizing crane respectively stack the gravity energy storage elements on the sides of the low-altitude section or the high-altitude section stacking area.
The energy storage system according to claim 17, characterized in that, both the low-altitude storage yard and the high-altitude storage yard are equipped with a plurality of rows of driving arrays, and each row of the driving array is equipped with a left palletizing crane. and the right palletizing crane, the loading and unloading crane is arranged between the left palletizing crane and the right palletizing crane, and above the low-altitude section or the high-altitude section.
The energy storage system according to claim 15, characterized in that, the energy storage system further comprises a system main controller, a grid connection device and a power grid, and the grid connection device is electrically connected to the linear motor stator group, so The grid connection device is also electrically connected to the grid, and is used for absorbing electric energy of the grid through the linear motor stator group and the linear motor mover group, or releasing electric energy to the grid.