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WO2018150987A1 - Module de cellules solaires - Google Patents

Module de cellules solaires Download PDF

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Publication number
WO2018150987A1
WO2018150987A1 PCT/JP2018/004303 JP2018004303W WO2018150987A1 WO 2018150987 A1 WO2018150987 A1 WO 2018150987A1 JP 2018004303 W JP2018004303 W JP 2018004303W WO 2018150987 A1 WO2018150987 A1 WO 2018150987A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
cell module
back surface
terminal box
protection member
Prior art date
Application number
PCT/JP2018/004303
Other languages
English (en)
Japanese (ja)
Inventor
鎮 山下
辻　雅司
慎一郎 辻井
厚志 福島
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2018150987A1 publication Critical patent/WO2018150987A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
    • H10F19/85—Protective back sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • This disclosure relates to a solar cell module.
  • the solar cell module a plurality of solar cells are protected by a front surface side protective member disposed on the side on which light is mainly incident and a back surface side protective member disposed on the side opposite to the front side.
  • a slit is provided in the back surface side protection member, and a terminal box is attached.
  • a solar cell module is provided with the output wiring which takes out the electric power produced
  • the output wiring is electrically connected to the terminal in the terminal box after passing through the slit.
  • the electric power from the solar cell module is taken out to the outside by two power supply wires electrically connected to the terminals of the terminal box.
  • the terminal box when the terminal box is attached to the back surface side protection member, for example, the terminal box is positioned on the back surface side protection member using a jig. Then, the periphery of the terminal box on the rear surface side protection member side is covered with a potting material made of silicon resin or the like, and further, as described in Patent Document 1, the terminal box is filled with the potting material.
  • a potting material made of silicon resin or the like
  • a terminal box but a general metal fitting etc. may be attached to the back surface side protection member of a solar cell module, it is preferable if these back surface parts can be attached to a back surface side protection member with sufficient position accuracy.
  • an object of the present disclosure is to provide a solar cell module capable of attaching a back surface component to the back surface side protection member with high positional accuracy.
  • the solar cell module according to the present disclosure includes a plurality of solar cells, a surface-side protection member provided on a light receiving side on which light mainly enters the plurality of solar cells, and a plurality of solar cells.
  • the solar cell module according to the present disclosure includes a plurality of solar cells, a surface-side protection member provided on a light receiving side on which light mainly enters the plurality of solar cells, and a plurality of solar cells.
  • a back surface side protection member provided on the side opposite to the light receiving side, and the back surface side protection member includes a protrusion on the back surface opposite to the plurality of solar battery cells and contacts the protrusion.
  • the back part is provided.
  • the back surface side protective member is provided with a protruding portion that protrudes on the side opposite to the light receiving side and contacts the back surface component attached to the back surface side of the back surface side protective member. Therefore, since the back surface component can be positioned by the protruding portion, the back surface component can be attached to the back surface side protection member with high positional accuracy.
  • FIG. 3A It is a schematic cross section corresponding to FIG. 3A in the solar cell module of the modification of 1st Embodiment. It is a schematic cross section corresponding to FIG. 3A in the solar cell module of 2nd Embodiment. It is a schematic cross section corresponding to Drawing 3B in the solar cell module of a 2nd embodiment. It is a schematic cross section when the solar cell module of 3rd Embodiment is cut
  • the side on which sunlight is mainly incident (over 50% to 100%) is defined as the light receiving side (front side), and the side opposite to the front side is defined as the back side.
  • the X direction is a string extending direction described below and represents a column direction.
  • the Y direction is a direction orthogonal to the X direction, and is an arrangement direction of strings arranged in a plurality of examples.
  • the Z direction is the height direction of the solar cell module. As shown in FIGS. 2A and 2B below, the solar cell module of the present disclosure is curved. In this specification, the height direction of the solar cell module is defined as a vertical direction when the back side of the solar cell module is placed on a horizontal plane.
  • the curved shape convex to the light receiving side is, for example, a curved shape convex to the light receiving side as a whole, but a curved shape with a part of a flat plate shape or a concave shape to the light receiving side.
  • a curved shape that is a shape is included.
  • both the front surface side protection member and the back surface side protection member may have a curved shape convex on the light receiving side, and only one of the front surface side protection member and the back surface side protection member receives light.
  • the curved shape may be convex to the side.
  • both the front surface side protection member and the back surface side protection member may be a flat plate shape that is not curved, and at least one of the front surface side protection member and the back surface side protection member is the light receiving side.
  • a concave curved shape may be used.
  • FIG. 1 is a schematic diagram showing the back side of the solar cell module 10 according to the first embodiment of the present disclosure.
  • 2A is a schematic diagram when the solar cell module 10 is viewed from the direction indicated by the arrow A in FIG. 1
  • FIG. 2B is a view when the solar cell module 10 is viewed from the direction indicated by the arrow B in FIG.
  • FIG. 3A is a schematic cross-sectional view when the peripheral region of the terminal box 60 of the solar cell module 10 is cut by a cut surface including the X direction and the Z direction
  • FIG. 3B illustrates the structure in the vicinity of the terminal box 60.
  • It is a schematic cross section for doing. 2A and 2B the solar cell modules 10, 110, 210, and 310 of the present disclosure are curved. However, the solar cell modules 10, 110, 210, and 310 are approximately shown in a flat plate shape in the drawings of FIG. 3A and subsequent drawings showing local portions in the X direction of the solar cell modules 10, 110, 210, and 310.
  • the solar cell module 10 has a substantially rectangular shape in plan view, and includes a terminal box 60 as an example of a back part on the back side in the Z direction.
  • the solar cell module 10 is curved so that the light receiving side is convex
  • the surface-side protection member 2 (see FIG. 3A) of the solar cell module 10 is convex so that the light receiving side is convex. It is curved.
  • the back surface side protection member 3 (refer FIG. 3A) of the solar cell module 10 is also curved so that the light-receiving side may be convex.
  • the center portion in the X direction and the center portion in the Y direction on the light receiving surface are located closest to the light receiving side in the Z direction.
  • the solar cell module 10 includes a plurality of solar cells 1, a front surface side protection member 2, a back surface side protection member 3, a wiring material 4, and a sealing material that are made of a translucent material. 5 is provided.
  • the solar battery cell 1 is made of a crystalline semiconductor made of, for example, single crystal silicon or polycrystalline silicon.
  • the solar battery cell 1 has, for example, an n-type region and a p-type region, and a junction for generating an electric field for carrier separation is provided at an interface portion between the n-type region and the p-type region.
  • the upper surface of the photovoltaic cell 1 has a substantially square shape, for example, it is not restricted to this.
  • any known structure may be used, and any shape may be used.
  • the surface-side protection member 2 is made of a translucent material, and is made of a translucent resin material such as translucent plastic.
  • the surface side protection member 2 is provided on the light receiving side where light mainly enters the plurality of solar cells 1 and protects the front side of the solar cell module 10.
  • the back surface side protection member 3 is provided in the opposite side to the said light reception side with respect to the several photovoltaic cell 1, for example, is comprised with a resin material etc.
  • the back surface side protection member 3 may be translucent or non-translucent.
  • the wiring member 4 electrically connects the electrode on the light receiving surface side of one solar cell 1 and the electrode on the back surface side of the other solar cell 1 in two solar cells 1 adjacent in the X direction.
  • the wiring member 4 is attached to each electrode with an adhesive or the like.
  • the wiring member 4 is preferably composed of, for example, a thin copper foil and solder plated on the surface of the copper foil, but may be composed of any other conductor.
  • the sealing material 5 is filled between the front surface side protection member 2 and the back surface side protection member 3, and seals the plurality of solar cells 1 between the front surface side protection member 2 and the back surface side protection member 3.
  • the sealing material 5 includes a front filler 5a and a back filler 5b, and the front filler 5a is disposed between the surface-side protection member 2 and the solar battery cell 1 whereas the back filler 5b. Is disposed between the solar battery cell 1 and the back surface side protection member 3.
  • the front filler 5a is made of a material having excellent translucency
  • the back filler 5b is made of a transparent or colored filler.
  • the front filler 5a is made of a transparent filler
  • the back filler 5b is made of a white filler that reflects light efficiently.
  • the sealing material 5 includes the front filler 5a having excellent translucency and the back filler 5b having excellent light reflecting properties, the light utilization efficiency is improved.
  • the sealing material may not be composed of two layers of the front filler and the back filler, and may be composed of only one layer. Alternatively, the sealing material may be composed of three or more layers of filler.
  • the front filler 5a and the back filler 5b are laminated by being laminated by a laminating process performed at a temperature of about 100 to 160 ° C., for example.
  • the front filler 5a is laminated on the front surface side protective member 2, and then the solar battery cell 1 and the wiring material 4 are placed thereon, and the back filler 5b and the back side protective member 3 are laminated thereon. Pressurize while heating and integrate.
  • the plurality of solar cells 1 are arranged in a matrix.
  • Two or more photovoltaic cells 1 arranged on the same straight line along the X direction are connected in series by a wiring member 4.
  • the two or more solar cells 1 and the wiring member 4 connecting the two or more solar cells 1 in series constitute a string 55.
  • the solar cell module 10 further includes a plurality of transition wiring members 30 extending in the Y direction.
  • the solar cells 1 at one end of the X direction are connected in series using the cross wiring member 30, and all the solar cells 1 are connected in series.
  • the solar cells 1a arranged on one side in the X direction and one side in the Y direction are arranged on the highest potential side.
  • the solar cells 1b arranged on one side in the X direction and the other side in the Y direction are arranged on the lowest potential side.
  • the solar cell 1a is disposed on the lowest potential side, and the solar cell 1b is disposed on the highest potential side.
  • the case where the solar battery cell 1a is disposed on the highest potential side and the solar battery cell 1b is disposed on the lowest potential side will be described as an example.
  • the plurality of transition wiring members 30 extending in the Y direction include five one-side transition wiring members 31 disposed on one side of the solar cell module 10 in the X direction (upper side in the drawing of FIG. 1).
  • Each of the plurality of one-side crossover wiring members 31 constitutes an output wiring and is electrically connected to the diode terminal of the terminal box 60.
  • the five one-side crossover wiring members 31 are arranged at intervals. Of the five one-side transition wiring members 31a, 31b, 31c, 31d, 31e, three one-side transition wiring members 31b, 31c, 31d also have a function of connecting two adjacent strings 55 in series.
  • the one-side transition wiring member 31a is disposed on the rightmost side in the Y direction and is electrically connected to the high potential side of the string 55 on the highest potential side, and the one side transition wiring member 31b is from the right in the Y direction. It is arranged in the second column and is electrically connected to the lowest potential side of the second highest potential string 55.
  • the one-side crossover wiring member 31c is arranged in the fourth column from the right in the Y direction and is electrically connected to the lowest potential side of the fourth highest potential string 55.
  • the one-side crossover wiring member 31d is arranged in the sixth column from the right in the Y direction and is electrically connected to the lowest potential side of the sixth highest potential string 55.
  • the one-side crossover wiring member 31e is arranged in the eighth column from the right in the Y direction and is electrically connected to the lowest potential side of the string 55 having the lowest potential.
  • the terminal box 60 is attached to the back surface of the back surface side protection member 3.
  • the back surface side protection member 3 is provided with one notch (not shown) as an example of a hole.
  • each of the one-side transition wiring members 31a to 31e is electrically connected to each one-side transition wiring member 31a to 31e and is connected to the corresponding diode in the terminal box 60 via the wiring member passing through the cut. Electrically connected to the terminal.
  • the back surface side protection member may be provided with a plurality of through holes instead of one cut, and each connection wiring may pass through any of the through holes. Between the diode terminals in the terminal box 60, bypass diodes 51a to 51d (existing in the terminal box 60 and not actually visible) are provided for suppressing the output decrease.
  • the amount of power generated by the solar cell 1 may be reduced and heat may be generated.
  • the bypass diodes 51a to 51d By providing the bypass diodes 51a to 51d, the two strings 55 connected in series including the solar cells 1 whose power generation amount has been reduced are short-circuited by the bypass diodes 51a to 51d. As a result, almost no current flows through the two strings 55, and damage to the solar battery cell 1 due to heat generation is suppressed.
  • the electric power from the solar cell module 10 is taken out by the two power supply wiring members 61 and 62 electrically connected to the terminals of the terminal box 60. In FIG.
  • the wiring member 35 passes through the notch 37 provided on the back surface side protection member 3 and the hole 38 provided on the back surface side protection member 3 side of the terminal box 60 and is connected to the diode terminal 51 in the terminal box 60. Is done.
  • FIG. 3A only one one-side transition wiring member 31 is shown for easy understanding of the connection structure using the one-side transition wiring member 31.
  • the back surface side protection member 3 includes a protruding portion 50, and the protruding portion 50 protrudes on the opposite side to the light receiving side and contacts the side surface 60b of the terminal box 60.
  • the inner peripheral surface 50 a of the protrusion 50 has a shape corresponding to the outer peripheral surface 60 a on the back surface side protection member 3 side of the terminal box 60, and the protrusion 50 surrounds the periphery of the terminal box 60 over the entire periphery.
  • the protrusion 50 constitutes an outer annular portion that surrounds the entire periphery of the terminal box 60.
  • the outer peripheral surface 60a of the terminal box 60 is press-fitted without a gap in a state having a tightening margin on the inner peripheral surface 50a of the protruding portion 50. As a result, the outer peripheral surface 60 a of the terminal box 60 is positioned with high accuracy by the inner peripheral surface 50 a of the protruding portion 50.
  • FIG. 4A is a schematic cross-sectional view corresponding to FIG. 3A in the solar cell module 510 of the reference example
  • FIG. 4B is a schematic cross-sectional view corresponding to FIG. 3B in the solar cell module 510.
  • the solar cell module 510 of the reference example is different from the solar cell module 10 in the following three points. That is, in the solar cell module 510, the back surface side protection member 503 does not have a protruding portion that protrudes on the side opposite to the light receiving side. Further, the solar cell module 510 has an annular potting material 530 made of silicon resin or the like around the solar cell module 510 side of the terminal box 560, and the terminal box 560 is an annular potting material 530 and is a back surface side protective member. 503 is attached. Further, the solar cell module 510 is filled with a potting material 531 made of silicon resin or the like in the terminal box 560.
  • the terminal box 560 is disposed in the solar cell module 510 as follows, for example. Referring to FIG. 4B, first, in the terminal box 560, the main body portion 560a other than the lid portion 560b is brought into contact with the back surface of the back surface side protection member 503 with a jig (not shown) and positioned. After that, the potting material 530 is disposed so as to surround the periphery of the back side protection member 503 side of the terminal box 560, the jig is removed, and an electronic component such as a diode is electrically connected in the main body 560a of the terminal box 560. To do.
  • the inside of the main body 560 a of the terminal box 560 is filled with the potting material 531, the lid 560 b is attached to the main body 560 a, and the attachment of the terminal box 560 to the back surface side protection member 503 is completed.
  • a jig is required when positioning the terminal box 560 on the back surface of the back surface side protection member 503. Therefore, positioning of the back surface side protection member 503 with respect to the back surface is not easy.
  • the potting material 530 is disposed so as to surround the periphery of the terminal box 560 on the back surface side protection member 503 side.
  • the dew condensation water or the like generated on the back surface side protection member 503 side is indicated by an arrow D in FIG. And enters the terminal box 560 through the gap. Therefore, even if the inside of the terminal box 560 is filled with the potting material 531 and condensed water or the like passes through the gap portion, it is necessary to prevent the electronic components in the terminal box 560 from coming into contact with moisture and deteriorating.
  • filling the potting material 531 into the terminal box 560 becomes indispensable, the material cost of the potting material 531 increases, and the manufacturing cost of the solar cell module 510 increases.
  • the terminal box 560 is easy to move, and the terminal box 560 may be displaced until the potting material 531 is cured.
  • the solar cell module 10 of the first embodiment is provided on the plurality of solar cells 1 and the light receiving side on which light mainly enters the plurality of solar cells 1 so that the light receiving side is convex.
  • the surface-side protection member 2 is curved.
  • the solar cell module 10 is provided with the back surface side protection member 3 which is provided in the opposite side to the light-receiving side with respect to the several photovoltaic cell 1, and curves so that the several photovoltaic cell 1 side may become convex.
  • the terminal box 60 is attached to the back surface 15 on the back surface 15 opposite to the plurality of solar battery cells 1 in the back surface side protection member 3, a protruding portion 50 that comes into contact with the terminal box 60 is provided. ing.
  • the mounting position of the terminal box 60 can be positioned without using a jig at the time of manufacture by the protruding portion 50 protruding to the side opposite to the light receiving side in the back surface side protection member 3. Further, after the terminal box 60 is attached, the movement of the terminal box 60 can be suppressed. Therefore, the terminal box 60 can be easily attached to the back surface side protection member 3 in a short time. In addition, the formed solar cell module 10 tends to be of high quality.
  • the back surface part may be the terminal box 60, and the protrusion 50 may contact at least a part of the side surface of the terminal box 60.
  • an outer annular portion surrounded by the protruding portion 50 may be included around the entire circumference of the terminal box 60.
  • the outer peripheral surface 60a of the terminal box 60 can be press-fitted without gaps in a state where the inner peripheral surface 50a of the protruding portion 50 has a tightening margin. Therefore, the outer peripheral surface 60a of the terminal box 60 can be positioned remarkably easily and accurately only by the inner peripheral surface 50a of the protruding portion 50 without using a jig. Furthermore, since the annular protrusion 50 can prevent dew condensation water or the like from entering the gap between the terminal box 60 and the back surface side protection member 3 in the entire area around the terminal box 60, the dew condensation water or the like can enter the terminal box 60. There is no intrusion.
  • the electronic components in the terminal box 60 do not deteriorate due to contact with the dew condensation water or the like outside the terminal box 60, it is not necessary to fill the terminal box 60 with a potting material. As a result, the material cost of the potting material can be reduced. Moreover, the attachment time of the terminal box 60 with respect to the back surface side protection member 3 can also be reduced, and the cycle time of manufacture of the solar cell module 10 can also be shortened.
  • the potting material may be arranged on the entire circumference around the terminal box 60 or a part in the circumferential direction so as to cover the contact portion between the terminal box 60 and the annular projecting portion 50. May be reliably prevented from entering the terminal box 60.
  • the protrusion 150 may protrude from the back surface side protection member 103 in the form shown in FIG. Further, the protruding portion 150 may surround a portion of the side surface of the terminal box 60 on the back surface side protection member 103 side over the entire circumference. Then, the end surface 150 a on the front end side of the protruding portion 150 may be smoothly connected to the edge of the back surface 115 of the back surface side protection member 103, and a concave guide with a small thickness may be provided on the back surface side protection member 103. Then, the terminal box 60 may be accurately positioned on the back surface side protection member 103 by press-fitting the terminal box 60 into the concave guide.
  • the end surface 150 a on the front end side of the protrusion 150 is smoothly connected to the edge of the back surface 115 of the back surface protection member 103. Therefore, for example, by providing a concave guide in a resin material such as CFRP (carbon fiber reinforced resin) by press molding or the like, the annular protrusion 150 can be formed on the back surface side protection member 103 easily and inexpensively. Therefore, the terminal box 60 can be accurately positioned on the back surface side protection member 103 at low cost.
  • CFRP carbon fiber reinforced resin
  • the protrusion 50 is annular and the protrusion 50 covers the entire circumference of the terminal box 60 has been described.
  • the protrusion may be disposed only in a part of the terminal box in the circumferential direction, or may contact the side surface of the terminal box 60 only in a part of the circumferential direction around the terminal box.
  • solar cell modules are often used in a state where the back surface of the solar cell module is not parallel to the horizontal plane. Therefore, the terminal box attached to the back surface of the solar cell module is inclined with respect to the horizontal plane.
  • the edge part located in the downward side in the installed solar cell module does not need to be covered with a protrusion part.
  • the protrusions may be spaced apart from only the four corners of the terminal box, and the terminal box may be positioned using only the protrusions at the four corners.
  • a protrusion part may be arrange
  • FIG. 6A is a schematic cross-sectional view corresponding to FIG. 3A in the solar cell module 210 of the second embodiment
  • FIG. 6B is a schematic cross-sectional view corresponding to FIG. 3B in the solar cell module 210.
  • descriptions of the same operational effects and modifications as those in the first embodiment are omitted, and the same configurations as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment. Description is omitted.
  • the solar cell module 210 has a hole 38 in the bottom plate portion 68 of the terminal box 60, and the electric power generated by the solar battery cell 1 passes through the wiring member 35 that passes through the hole 38. It is transmitted to the diode terminal 51. Further, in the solar cell module 210, the outer peripheral surface 250 a of the annular projecting portion 250 that projects to the opposite side of the light receiving side in the back surface side protection member 203 extends along the inner peripheral surface 38 a of the hole portion 38 over the entire circumference. And is fitted into the inner peripheral surface 38a. The wiring member 35 passes through a hole 239 provided on the radially inner side of the annular protrusion 250.
  • the protrusion 250 constitutes an inner annular portion that is disposed on the inner peripheral surface 38a of the hole portion 38 so as to extend along the entire inner peripheral surface 38a and is fitted into the inner peripheral surface 38a.
  • the outer peripheral surface 250a of the protruding portion 250 is press-fitted without a gap in a state of having a tightening margin on the inner peripheral surface 38a of the hole portion 38 of the terminal box 60.
  • the inner peripheral surface 38 a of the terminal box 60 is positioned by the outer peripheral surface 250 a of the protrusion 250.
  • the back part is the terminal box 60.
  • generated by the several photovoltaic cell 1 to the diode terminal 51 in the terminal box 60 passes in the bottom part by the side of the back surface side protection member 203 of the terminal box 60.
  • the protrusion 250 includes an inner annular portion that is disposed along the inner peripheral surface 38a of the hole 38 along the entire circumference and is fitted into the inner peripheral surface 38a.
  • the inner peripheral surface 38a of the hole portion 38 of the terminal box 60 can be press-fitted without gaps with the outer peripheral surface 250a of the protruding portion 250 having a tightening margin. Therefore, the terminal box 60 can be easily and accurately positioned only by the outer peripheral surface 250a of the protrusion 250 without using a jig.
  • the inner peripheral surface 38 a of the hole 38 of the terminal box 60 is covered with the outer peripheral surface 250 a of the protruding portion 250 over the entire periphery. Therefore, even if condensed water or the like enters the gap between the terminal box 60 and the back surface side protection member 203 in the direction indicated by the arrow E in FIG. 6B, the condensed water or the like is prevented from passing through the hole 38 by the protruding portion 250.
  • the dew condensation water or the like does not enter the terminal box 60. Therefore, since the electronic components in the terminal box 60 do not deteriorate due to contact with the dew condensation water or the like outside the terminal box 60, it is not necessary to fill the terminal box 60 with a potting material. As a result, the material cost of the potting material can be reduced. In addition, the time for attaching the terminal box 60 to the back surface side protection member 203 can be reduced, and the cycle time for manufacturing the solar cell module 210 can be shortened.
  • the positioning of the terminal box 60 with high accuracy and the penetration of the condensed water and the like into the terminal box 60 can be achieved simply by disposing the protruding portion 250 so as to cover the entire inner peripheral surface 38a of the hole 38. Can be prevented. Therefore, in comparison with the first embodiment, since the region where the protrusion 250 is provided can be reduced, the manufacturing cost can be reduced and the manufacturing cycle time can be easily shortened.
  • FIG. 7A is a schematic cross-sectional view when the solar cell module 310 of the third embodiment is cut along a cut surface including the X direction and the Z direction
  • FIG. 7B shows the solar cell module 410 of the fourth embodiment. It is a schematic cross section when it cut
  • the protruding portion 350 that protrudes from the back surface side protection member 303 to the back side and positions the terminal box 60 overlaps the solar cell 301 when viewed from the height direction.
  • the protruding portion 450 that protrudes from the back surface side protection member 403 to the back side and positions the terminal box 60 is formed in the solar cell 401 when viewed from the height direction. Do not overlap.
  • the back surface side protective member of the solar cell module is provided with a protruding portion that protrudes on the side opposite to the light receiving side, a portion that is excessively compressed at the time of lamination or a location where the pressure is insufficient occurs, There is a risk that bubbles may occur.
  • the laminated component parts in the solar cell module are heated and the laminated component parts are compressed. Therefore, as shown by arrows F, G, H, and I in FIGS. 7A and 7B, in the back surface side protection members 303 and 403, the locations where the protrusions 350 and 450 are provided are compared with other locations. , The compression pressure increases and, in some cases, excessive pressure.
  • the protrusion 450 does not overlap the solar cell 401 when viewed from the height direction.
  • the solar cell module 410 is less likely to be applied to the solar cell 401 than the solar cell module 310 in which the protruding portion 350 overlaps the solar cell 301, and the solar cell 401 is damaged. Hateful.
  • the solar cell module 410 is less likely to act on the solar cell 401 than the solar cell module 310, bubbles are less likely to be generated in the solar cell module 410.
  • a resin material having translucency is exemplified as the material for the front surface side protection member and the back surface side protection member. Since the resin material is light and easy to process, there are many advantages in manufacturing, but a light-transmitting inorganic material such as glass can also be used.
  • the back part is the terminal box 60
  • the back part is not limited to this. It may be a general metal fitting for hanging other members on the back surface side protection member, and includes a general metal fitting in a protruding portion provided on the back surface side protection member and protruding to the side opposite to the light receiving side. A desired component or the like may be accurately positioned on the back surface side protection member.
  • the solar cell module 10,110,210,310,410 demonstrated the case where it did not have a flame
  • the entire solar cell module has a curved shape, but the solar cell module may have a flat rectangular shape.
  • the solar cell module is often installed with being inclined with respect to a horizontal plane. Therefore, by adopting the configuration of the above embodiment and the modified example, it is possible not only to easily attach the back part, but also to prevent moisture from entering the terminal box when the back part is a terminal box.
  • a new embodiment may be configured by combining two or more of the configurations described in the first to fourth embodiments and all the modified examples.
  • the protrusion may include the annular protrusion 50 described in the first embodiment and the annular protrusion 250 described in the second embodiment.
  • a protrusion part may also contain the protrusion part 150 of the modification demonstrated in FIG. 5, and the protrusion part 250 demonstrated in 2nd Embodiment.
  • the protrusions of the first embodiment, the second embodiment, and the modification described in FIG. 5 do not have to overlap the solar battery cells when viewed from the height direction. Moreover, when providing a protrusion part in the circumference

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  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne un module de cellules solaires 10 configuré pour comprendre : une pluralité de cellules solaires 1; un élément de protection côté surface avant 2 qui est agencé sur le côté de réception de lumière de la pluralité de cellules solaires 1, à partir de laquelle la lumière est principalement incidente sur les cellules solaires 1; et un élément de protection côté surface arrière 3 qui est disposé sur le côté opposé du côté de réception de lumière par rapport à la pluralité de cellules solaires 1. L'élément de protection côté surface arrière 3 est configuré pour comprendre une saillie 50 sur la surface arrière qui est sur le côté opposé de la surface côté cellules solaires 1. Une boîte à bornes 60 est agencée de façon à être en contact avec la saillie 50.
PCT/JP2018/004303 2017-02-17 2018-02-08 Module de cellules solaires WO2018150987A1 (fr)

Applications Claiming Priority (2)

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JP2017028287 2017-02-17
JP2017-028287 2017-12-19

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WO2018150987A1 true WO2018150987A1 (fr) 2018-08-23

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WO (1) WO2018150987A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000357812A (ja) * 1999-04-15 2000-12-26 Canon Inc 太陽電池モジュール及び発電装置
JP2001111088A (ja) * 1999-10-07 2001-04-20 Fuji Electric Co Ltd 太陽電池モジュールとその設置方法
US20020139412A1 (en) * 2001-03-28 2002-10-03 Klaus Reimer Cover, constructed as a solar generator, for closing an opening in the bodywork of a vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000357812A (ja) * 1999-04-15 2000-12-26 Canon Inc 太陽電池モジュール及び発電装置
JP2001111088A (ja) * 1999-10-07 2001-04-20 Fuji Electric Co Ltd 太陽電池モジュールとその設置方法
US20020139412A1 (en) * 2001-03-28 2002-10-03 Klaus Reimer Cover, constructed as a solar generator, for closing an opening in the bodywork of a vehicle

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