+

WO2018186088A1 - Dispositif de commande de batterie - Google Patents

Dispositif de commande de batterie Download PDF

Info

Publication number
WO2018186088A1
WO2018186088A1 PCT/JP2018/008461 JP2018008461W WO2018186088A1 WO 2018186088 A1 WO2018186088 A1 WO 2018186088A1 JP 2018008461 W JP2018008461 W JP 2018008461W WO 2018186088 A1 WO2018186088 A1 WO 2018186088A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
current
socv
soci
calculation unit
Prior art date
Application number
PCT/JP2018/008461
Other languages
English (en)
Japanese (ja)
Inventor
大川　圭一朗
亮平 中尾
Original Assignee
日立オートモティブシステムズ株式会社
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 日立オートモティブシステムズ株式会社 filed Critical 日立オートモティブシステムズ株式会社
Priority to JP2019511104A priority Critical patent/JP6827527B2/ja
Publication of WO2018186088A1 publication Critical patent/WO2018186088A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery control device.
  • Examples of devices using batteries such as lithium secondary batteries, nickel hydride batteries, lead batteries, and electric double layer capacitors include battery systems, distributed power storage devices, and electric vehicles.
  • a battery state detection device for detecting the state of the battery is used.
  • SOC state of charge
  • SOH health state
  • the SOC in a battery system such as an electric vehicle is calculated by calculating the ratio of the amount of charge remaining in the battery (remaining capacity) to the amount of charge (total capacity) that can be fully charged by integrating the discharge current from full charge. Can be obtained.
  • the SOC thus determined is referred to as SOCi.
  • the relationship between the voltage across the battery (open circuit voltage) and the remaining capacity of the battery is defined in advance in a data table or the like, and the current remaining capacity can be calculated by referring to this. it can.
  • the SOC thus obtained is referred to as SOCv.
  • the state of charge can also be obtained by combining these methods.
  • Patent Document 1 describes that when SOCi and SOCv are combined, they are weighted and added according to the battery temperature.
  • the battery control device includes an SOCv calculation unit that calculates the state of charge of the battery using a voltage across the battery, and an SOCi calculation unit that calculates the state of charge of the battery by integrating the current I flowing through the battery.
  • the first coefficient G1 of the calculation formula is related to the whole calculation formula
  • the second coefficient G2 is related to the absolute value of the magnitude of the current I in the calculation formula.
  • FIG. 1 is a block configuration diagram of a battery system 1000 according to the first embodiment.
  • the battery system 1000 includes a battery 400, a measurement unit 200, a battery control device 100, and an output unit 300, and supplies the electric charge accumulated in the battery 400 from the output unit 300 as electric power.
  • an electric vehicle, a hybrid vehicle, a train, and the like can be considered.
  • the battery 400 is a rechargeable battery such as a lithium ion secondary battery.
  • the present embodiment can be applied to devices having a power storage function such as a nickel metal hydride battery, a lead battery, and an electric double layer capacitor.
  • the battery 400 may be a single battery cell or a module structure in which a plurality of single battery cells are combined.
  • the measuring unit 200 is a functional unit that measures the physical characteristics of the battery 400, for example, the voltage V across the battery 400, the current (battery current) I flowing through the battery 400, the battery temperature T of the battery 400, and the like. It is composed of sensors and necessary electrical circuits.
  • the output unit 300 is a functional unit that outputs the output of the battery control device 100 to an external device (for example, a host device such as a vehicle control device provided in an electric vehicle).
  • an external device for example, a host device such as a vehicle control device provided in an electric vehicle.
  • the battery control device 100 is a device that controls the operation of the battery 400, and includes a battery state estimation device 110 and a storage unit 120. As will be described later, the battery state estimation requires the internal resistance R of the battery 400, but in the present embodiment, the battery state estimation device 110 uses other measurement parameters to calculate.
  • the battery state estimation device 110 includes the battery 400 stored in the storage unit 120 based on the voltage V across the battery 400 measured by the measurement unit 200, the battery current I flowing through the battery 400, and the battery temperature T of the battery 400.
  • the SOC of the battery 400 is calculated with reference to the characteristic information. Details of the SOC calculation method will be described later.
  • the storage unit 120 stores the characteristic information of the battery 400 that can be known in advance such as the internal resistance R and the polarization voltage Vp of the battery 400 according to the battery 400. Furthermore, the storage unit 120 stores a resistance table indicating the relationship between the internal resistance R of the battery 400 and the battery temperature T, an SOC table indicating the relationship between the open circuit voltage OCV and the SOC of the battery 400, and the like.
  • the battery control device 100 and the battery state estimation device 110 can be configured using hardware such as a circuit device that realizes the function. Moreover, it is also possible to configure the software in which the function is implemented by executing an arithmetic device such as a CPU (Central Processing Unit). In the latter case, the software is stored in the storage unit 120, for example.
  • an arithmetic device such as a CPU (Central Processing Unit).
  • the software is stored in the storage unit 120, for example.
  • the storage unit 120 is configured using a storage device such as a flash memory, an EEPROM (Electrically-Erasable-Programmable-Read-Only Memory), or a magnetic disk.
  • the storage unit 120 may be provided outside the battery state estimation device 110, or may be realized as a memory device provided inside the battery state estimation device 110.
  • the storage unit 120 may be removable. When the storage unit 120 is removable, the characteristic information and software can be easily changed by replacing the storage unit 120. Further, by storing a plurality of storage units 120 and storing the characteristic information and software in the replaceable storage unit 120, the characteristic information and software can be updated for each small unit.
  • FIG. 2 is a functional block diagram showing details of the battery state estimation device 110.
  • the battery state estimation device 110 includes an SOCv calculation unit 111, an SOCi calculation unit 112, and a weight coefficient calculation unit 114, and outputs a charge state SOCw that is a result of estimating the charge state of the battery 400. Other arithmetic units will be described later.
  • the SOCv calculation unit 111 calculates the SOC of the battery 400 using the voltage V across the battery 400 measured by the measurement unit 200. Hereinafter, this is referred to as SOCv.
  • the SOCi calculation unit 112 calculates the SOC of the battery 400 by integrating the battery current I of the battery 400 measured by the measurement unit 200. Hereinafter, this is referred to as SOCi. The calculation method of SOCv and SOCi will be described later.
  • the weighting factor calculation unit 114 calculates a weighting factor W for weighting and adding SOCv and SOCi based on the battery current I and the battery temperature T. A method for calculating the weighting factor W will be described later.
  • Multiplier MP1 multiplies SOCv and weighting factor W to obtain W ⁇ SOCv.
  • the subtractor DF obtains (1-W).
  • Multiplier MP2 multiplies SOCi and (1-W) to obtain (1-W) ⁇ SOCi.
  • the adder AD adds these to obtain SOCw. That is, SOCw is expressed by the following equation (1).
  • SOCw W ⁇ SOCv + (1 ⁇ W) ⁇ SOCi (1)
  • FIG. 3 is an equivalent circuit diagram of the battery 400.
  • the battery 400 can be represented by a parallel connection pair of an impedance Z and a capacitance component C, an internal resistance R, and an open circuit voltage OCV connected in series.
  • the closed circuit voltage CCV that is the voltage between the terminals of the battery 400 is expressed by the following equation (2).
  • Vp is a polarization voltage and corresponds to the voltage across the parallel connection pair of the impedance Z and the capacitance component C.
  • CCV OCV + I ⁇ R + Vp (2)
  • the open circuit voltage OCV is used to calculate the SOCv, but cannot be directly measured while the battery 400 is being charged / discharged. Therefore, the SOCv calculation unit 111 obtains the open circuit voltage OCV by subtracting the IR drop and the polarization voltage Vp from the closed circuit voltage CCV as in the following equation (3).
  • OCV CCV-I / R-Vp (3)
  • the internal resistance R and the polarization voltage Vp are stored in advance as characteristic information of the battery 400 in the storage unit 120. Since the internal resistance R and the polarization voltage Vp differ depending on the state of charge of the battery 400, the battery temperature T, and the like, individual values are stored in the storage unit 120 for each of these combinations.
  • characteristic information that defines the correspondence between the internal resistance R and the battery temperature T is stored as a resistance table. As shown in FIG. 2, the SOCv calculation unit 111 acquires the internal resistance R from the resistance table based on the battery temperature T, and obtains an IR drop. To do.
  • FIG. 4 is a diagram showing the relationship between the open circuit voltage OCV and the SOC of the battery 400. This correspondence is determined by the characteristics of the battery 400, and data defining the correspondence is stored in advance in the storage unit 120 as an SOC table.
  • the SOCv calculator 111 calculates the open circuit voltage OCV using the above-described equation (3), and calculates the SOCv of the battery 400 by referring to the SOC table using this as a key.
  • the SOCi calculation unit 112 calculates the SOCi of the battery 400 by accumulating the battery current I charged and discharged by the battery 400 according to the following equation (4).
  • Qmax is the full charge capacity of the battery 400 and is stored in the storage unit 120 in advance.
  • SOCold is a value of SOCw calculated by the equation (1) in the previous calculation cycle.
  • SOCi SOCold + 100 ⁇ ⁇ I / Qmax (4)
  • FIG. 5 is a diagram showing the relationship between the internal resistance R of the battery 400 and the battery temperature T.
  • the battery 400 has a high internal resistance R in a low SOC state and a large value of the internal resistance R in a low temperature state. Therefore, in such a case, it is considered desirable to use SOCi instead of SOCv which is easily affected by the error of the internal resistance R. Further, when the absolute value of the battery current I is small, it is influenced by a slight measurement error of the current sensor, so it is considered desirable to use SOCv instead of SOCi.
  • the weighting factor calculation unit 114 calculates SOCw mainly using the SOCv when the absolute value of the battery current I is small, and mainly uses SOCi when the absolute value of the battery current I is large.
  • the weighting factor W is set so as to calculate the SOCw.
  • the weighting factor W is set so that the SOCw is calculated mainly using the SOCv when the internal resistance R is small, and the SOCw is calculated mainly using the SOCi when the internal resistance R is large.
  • the correction coefficient G1 is a value of 1 or more in the present embodiment and the following embodiments, and is set to a value equal to or less than a predetermined value such as 100, for example.
  • the correction coefficient G2 is set to a value of 0 or more.
  • the correction coefficients G 1 and G 2 values corresponding to the characteristics of the battery 400 are stored in the storage unit 120 in advance.
  • the correction coefficient G1 is assumed to be 1. However, it may be a value equal to or smaller than a predetermined value such as 100, for example. By setting the correction coefficient G1 to a value equal to or less than a predetermined value, the setting by the correction coefficient G2 can be made more effective.
  • the SOCv is reflected by 1/5, and the specific gravity of the SOCv is larger than when the current described later is large.
  • the specific gravity of SOCi is large in the previous state and the SOC error is accumulated due to the current integration error based on the equation (4), the specific gravity of SOCv is large when the current is small.
  • the SOC error can be eliminated by the SOCv obtained using the equation (3) as a key. That is, the SOC is calibrated by the SOCv.
  • the SOCv is expressed by the function f of (CCV-I ⁇ R) as in the following equation (6).
  • SOCv f (CCV ⁇ I ⁇ R) (6) Therefore, when the battery current I is very small, I ⁇ R is small, and it is difficult to be influenced by the error of the internal resistance R, and the error of the SOCv itself is also reduced.
  • the internal resistance R of the battery takes a large value especially at a low temperature. Therefore, if there is an error such as a temperature sensor, it becomes a large error factor.
  • SOCv is only reflected by 1/401, and the specific gravity of SOCi is larger than when the current is small.
  • SOCw substantially reflects the result of SOCi.
  • SOCi is expressed by equation (4). Since SOCi is not affected by the voltage and the internal resistance R, SOCw shows a very stable value.
  • Embodiment- the block configuration diagram of the battery system of FIG. 1 described in the first embodiment, the functional block diagram showing the details of the battery state estimation device of FIG. 2, and the equivalent circuit of the battery of FIG. 3 are shown. Since the figure, the figure which shows the relationship between OCV and SOC of FIG. 4, and the figure which shows the relationship between the internal resistance of the battery of FIG. 5 and battery temperature are the same, the description is abbreviate
  • FIG. 6 is a diagram showing a correction coefficient G2 table 130 in the second embodiment.
  • the correction coefficient G2 shown in the table 130 is an example and is stored in the storage unit 120.
  • the correction coefficient G2 of the range 131 in which the battery temperature T is ⁇ 10 ° C. or more and 10 ° C. or less and the absolute value of the battery current I is 20 A or more is set to a value of 5 to 100, and the other ranges are corrected.
  • the coefficient G2 is set to a value of 1.
  • the weighting factor calculation unit 114 reads the correction factor G2 by referring to the table 130 in the storage unit 120 based on the detected battery current I and the battery temperature T, and calculates the weighting factor W based on Expression (5). To do.
  • weighting factor W is sufficient even when the current is large. Therefore, the specific gravity of SOCi does not increase and the accuracy of SOC deteriorates. Therefore, in the present embodiment, when the battery temperature T is equal to or higher than a predetermined value and equal to or lower than the predetermined value, and the absolute value of the battery current I is equal to or higher than the predetermined value, the correction coefficient G2 is set so that the specific gravity of SOCi increases.
  • the battery 400 is a low-temperature region (for example, ⁇ 10 ° C. or more and 10 ° C. or less) and has a low internal resistance (for example, a negative electrode having a graphite-based battery) and a large battery current.
  • the battery current I is 30 A and the battery temperature is 0 ° C.
  • the value 50 of the correction coefficient G 2 is read from the table 130.
  • SOCw (1/1501) ⁇ SOCv + (1500/1501) ⁇ SOCi
  • SOCv reflects only 1/1501, and the specific gravity of SOCi is large. Therefore, SOCi improves the accuracy of the SOC.
  • SOCw (1/31) ⁇ SOCv + (30/31) ⁇ SOCi
  • SOCv reflects 1/31 as compared with the present embodiment, and calibration by the SOCv occurs little by little, so that the specific gravity of the SOCi does not increase and the accuracy of the SOC deteriorates.
  • the battery 400 is a low-temperature region (for example, ⁇ 10 ° C. or more and 10 ° C. or less) and a low internal resistance (for example, a negative electrode having a graphite-based battery) and a small current.
  • the battery current I is 10 A and the battery temperature T is 0 ° C.
  • the value 1 of the correction coefficient G 2 is read from the table 130.
  • the weighting factor W is sufficiently small when the battery current is large, the specific gravity of SOCi is large, and the accuracy of the SOC is improved. To do. When the current is small, calibration by SOCv can be expected by the conventional operation.
  • the block configuration diagram of the battery system of FIG. 1 described in the first embodiment, the functional block diagram showing the details of the battery state estimation device of FIG. 2, and the equivalent circuit of the battery of FIG. 3 are shown. Since the figure, the figure which shows the relationship between OCV and SOC of FIG. 4, and the figure which shows the relationship between the internal resistance of the battery and battery temperature of FIG. 5 are the same, the description is omitted.
  • FIG. 7 is a view showing a correction coefficient G2 table 140 in the third embodiment.
  • the correction coefficient G2 shown in the table 140 is an example and is stored in the storage unit 120.
  • the correction coefficient G2 of the range 141 in which the absolute value of the battery current I is within 10 A is set to 0, and the correction coefficient G2 is set to 1 for the other ranges.
  • the weighting factor calculation unit 114 reads the correction factor G2 by referring to the table 140 in the storage unit 120 based on the detected battery current I and the battery temperature T, and calculates the weighting factor W based on the equation (5). To do.
  • the weighting factor W is not sufficiently increased, and the specific gravity of the SOCv is not increased, so that the SOC calibration frequency is low. For this reason, when the SOCi current accumulation error is accumulated due to the error of the current sensor, the accuracy of the SOC deteriorates due to the low calibration frequency. For this reason, in the present embodiment, when the absolute value of the battery current I is equal to or less than a predetermined value, the correction coefficient G2 is set so that the specific gravity of the SOCv is increased.
  • the table 140 is set so that the specific gravity of the SOCv is increased when the absolute value of the battery current I is not more than a predetermined value in accordance with the battery characteristic.
  • the SOC calibration frequency can be improved.
  • the block configuration diagram of the battery system of FIG. 1 described in the first embodiment, the functional block diagram showing the details of the battery state estimation device of FIG. 2, and the equivalent circuit of the battery of FIG. 3 are shown. Since the figure, the figure which shows the relationship between OCV and SOC of FIG. 4, and the figure which shows the relationship between the internal resistance of the battery of FIG. 5 and battery temperature are the same, the description is abbreviate
  • FIG. 8 is a view showing a table 150 of the correction coefficient G2 in the fourth embodiment.
  • the correction coefficient G2 shown in the table 150 is an example and is stored in the storage unit 120.
  • the correction coefficient G2 in the range 151 in which the battery temperature T is 0 ° C. or less and the absolute value of the battery current I is 10 A or more is set to a value of 50 to 100, and the correction coefficient G2 is set to a value of 1 in other ranges. Is set.
  • the weighting factor calculation unit 114 reads the correction factor G2 by referring to the table 150 in the storage unit 120 based on the detected battery current I and the battery temperature T, and calculates the weighting factor W based on the equation (5). To do.
  • the value 1 of the correction coefficient G2 is read from the table 150.
  • the value 100 of the correction coefficient G 2 is read from the table 150.
  • the battery temperature T is predetermined even if the battery voltage has a characteristic that causes an event that the battery voltage greatly deviates from the relationship of the expression (3). If the absolute value of the battery current I is less than or equal to a predetermined current, the table 150 is set so that the specific gravity of SOCi increases. Thereby, the precision of SOC can be improved. Furthermore, since the specific gravity of SOCv increases when the battery current is 0 A, the calibration frequency can be secured.
  • FIG. 9 is a diagram showing a summary of the first to fourth embodiments.
  • the value of the correction coefficient G2 to be set is shown according to the magnitude of the absolute value of the battery current I, the magnitude of the internal resistance R, and the range of the battery temperature T.
  • the specific gravity of SOCv can be increased, or the specific gravity of SOCi can be increased.
  • the SOCv is appropriately set.
  • the specific gravity of SOCi can be increased.
  • the battery control device 100 calculates the state of charge of the battery 400 by integrating the SOCv calculation unit 111 that calculates the state of charge of the battery 400 using the voltage across the battery 400 and the current I flowing through the battery 400.
  • a weight for calculating the weighting coefficient W based on a calculation formula including the arithmetic unit 112, the absolute value of the magnitude of the current I, the internal resistance R of the battery, the first coefficient G1, and the second coefficient G2.
  • the first coefficient G1 of the calculation formula is related to the whole calculation formula
  • the second coefficient G2 is related to the absolute value of the magnitude of the current I in the calculation formula. This facilitates setting of weights for calculating the SOC with high accuracy.
  • the calculation formula is the following formula, and the weighting factor calculation unit 114 calculates the weighting factor W based on the calculation formula. This facilitates setting of weights for calculating the SOC with high accuracy.
  • W 1 / ⁇ (1+
  • the SOCw calculation units MP1, MP2, DF, and AD are the state of charge SOCv of the battery 400 calculated by the SOCv calculation unit 111 and the state of charge SOCi of the battery 400 calculated by the SOCi calculation unit 112.
  • W the weighting factor
  • the weighting factor calculation unit 114 is a current that flows in the battery 400 when the temperature T of the battery 400 is in the range of the first predetermined value or higher on the low temperature side and the second predetermined value or lower on the high temperature side.
  • the second coefficient G2 is set to a value greater than 1
  • the SOCw calculation units MP1, MP2, DF, and AD have the first predetermined value when the temperature T is low.
  • the specific gravity of the state of charge of the battery calculated by the SOCi calculation unit 112 is increased. To do. Thereby, even if the battery has a low low temperature region and a small internal resistance, the weighting factor W is sufficiently small when the battery current is large, the specific gravity of SOCi is increased, and the accuracy of the SOC is improved.
  • the weighting coefficient calculation unit 114 sets the second coefficient G2 to 0 when the absolute value of the current I flowing through the battery 400 is equal to or less than a predetermined current, and calculates SOCw.
  • the units MP1, MP2, DF, and AD increase the specific gravity of the state of charge of the battery 400 calculated by the SOCv calculation unit 111 when the absolute value of the current I flowing through the battery 400 is equal to or less than a predetermined current.
  • the table 140 is set so that the specific gravity of the SOCv increases. By setting, the SOC calibration frequency can be improved.
  • the weighting factor calculation unit 114 determines that the first value when the temperature T of the battery 400 is equal to or lower than the predetermined temperature and the absolute value of the current I flowing through the battery 400 is equal to or lower than the predetermined current.
  • the coefficient G2 of 2 is set to a value greater than 1, and the SOCw calculation units MP1, MP2, DF, and AD have the temperature T of the battery 400 equal to or lower than a predetermined temperature and the absolute value of the current I flowing through the battery 400 is predetermined.
  • the specific gravity of the state of charge of the battery 400 calculated by the SOCi calculation unit 112 is increased. Thereby, the precision of SOC can be improved by this.
  • the weighting coefficient calculation unit 114 sets the first coefficient G1 to a value equal to or less than a predetermined value. Thereby, the setting by the second coefficient G2 can be made more effective.
  • the present invention can be implemented by modifying the first to fourth embodiments described above as follows.
  • (1) The weighting factor calculation unit 114 has been described as an example in which the weighting factor W is calculated based on Expression (5). However, the weighting factor W may be calculated based on the following equation (5 ′).
  • the present invention is not limited to the above-described embodiment, and other forms conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention as long as the characteristics of the present invention are not impaired. . Moreover, it is good also as a structure which combined the above-mentioned embodiment and a modification.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Tests Of Electric Status Of Batteries (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Il a été traditionnellement difficile de régler une pondération pour calculer un SOC avec une grande précision. L'invention concerne un dispositif de commande de batterie comprenant une unité de calcul (114) de facteur de pondération qui calcule un facteur de pondération W d'après une formule (5), de sorte qu'une densité relative de SOCv et une densité relative de SOCi sont automatiquement sélectionnées en fonction de l'amplitude d'un courant I. Formule (5) : W=1/{(1+|I|×R×G2)×G1}. Ici, le facteur de correction G1 est réglé à une valeur supérieure ou égale à 1, et inférieure ou égale à une valeur prescrite, comme par exemple 100, dans le présent mode de réalisation et dans les autres modes de réalisation. Le facteur de correction G2 est réglé à une valeur supérieure ou égale à 0. Pour les facteurs de correction G1 et G2, des valeurs correspondant à une caractéristique d'une batterie (400) sont mémorisées à l'avance dans une unité de mémorisation (120). Il suffit que la valeur du facteur de correction G1 soit une valeur inférieure ou égale à une valeur prescrite, comme par exemple 100.
PCT/JP2018/008461 2017-04-07 2018-03-06 Dispositif de commande de batterie WO2018186088A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019511104A JP6827527B2 (ja) 2017-04-07 2018-03-06 電池制御装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017077137 2017-04-07
JP2017-077137 2017-04-07

Publications (1)

Publication Number Publication Date
WO2018186088A1 true WO2018186088A1 (fr) 2018-10-11

Family

ID=63713486

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/008461 WO2018186088A1 (fr) 2017-04-07 2018-03-06 Dispositif de commande de batterie

Country Status (2)

Country Link
JP (1) JP6827527B2 (fr)
WO (1) WO2018186088A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111098755A (zh) * 2019-11-21 2020-05-05 南通大学 一种电动汽车动力电池soc估计方法
JP2020076628A (ja) * 2018-11-07 2020-05-21 トヨタ自動車株式会社 電池制御装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002222668A (ja) * 2000-11-17 2002-08-09 Robert Bosch Gmbh バッテリの充電状態を決定するための方法及びこの方法を実施するための装置
US20120109556A1 (en) * 2010-10-29 2012-05-03 GM Global Technology Operations LLC Band select state of charge weighted scaling method
JP2014044074A (ja) * 2012-08-24 2014-03-13 Hitachi Vehicle Energy Ltd 電池状態推定装置、電池制御装置、電池システム、電池状態推定方法
WO2014115294A1 (fr) * 2013-01-25 2014-07-31 日立ビークルエナジー株式会社 Dispositif de contrôle de batterie, système de batterie
WO2017195760A1 (fr) * 2016-05-12 2017-11-16 日立オートモティブシステムズ株式会社 Dispositif d'estimation d'état de batterie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002222668A (ja) * 2000-11-17 2002-08-09 Robert Bosch Gmbh バッテリの充電状態を決定するための方法及びこの方法を実施するための装置
US20120109556A1 (en) * 2010-10-29 2012-05-03 GM Global Technology Operations LLC Band select state of charge weighted scaling method
JP2014044074A (ja) * 2012-08-24 2014-03-13 Hitachi Vehicle Energy Ltd 電池状態推定装置、電池制御装置、電池システム、電池状態推定方法
WO2014115294A1 (fr) * 2013-01-25 2014-07-31 日立ビークルエナジー株式会社 Dispositif de contrôle de batterie, système de batterie
WO2017195760A1 (fr) * 2016-05-12 2017-11-16 日立オートモティブシステムズ株式会社 Dispositif d'estimation d'état de batterie

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020076628A (ja) * 2018-11-07 2020-05-21 トヨタ自動車株式会社 電池制御装置
JP7119921B2 (ja) 2018-11-07 2022-08-17 トヨタ自動車株式会社 電池制御装置
CN111098755A (zh) * 2019-11-21 2020-05-05 南通大学 一种电动汽车动力电池soc估计方法

Also Published As

Publication number Publication date
JPWO2018186088A1 (ja) 2020-05-14
JP6827527B2 (ja) 2021-02-10

Similar Documents

Publication Publication Date Title
JP5863603B2 (ja) 電池状態推定装置、電池制御装置、電池システム、電池状態推定方法
JP5287844B2 (ja) 二次電池の残存容量演算装置
CN108291944B (zh) 电池管理装置
US8269502B2 (en) Method for determining the state of health of a battery using determination of impedance and/or battery state
JP5356465B2 (ja) 蓄電池充電状態検知方法および蓄電池充電状態検知装置
JP6947937B2 (ja) 電池状態推定装置、電池制御装置
JP6867478B2 (ja) 電池制御装置および車両システム
WO2015033504A1 (fr) Dispositif et procédé d'estimation de l'état de charge d'une batterie
JPWO2006080067A1 (ja) 二次電池の充放電電気量推定方法および装置、二次電池の分極電圧推定方法および装置、並びに二次電池の残存容量推定方法および装置
JP6895541B2 (ja) 二次電池監視装置、二次電池状態演算装置および二次電池状態推定方法
CN110462412B (zh) 用于估计电池的soc的装置和方法
JP4509670B2 (ja) 蓄電デバイスの残存容量演算装置
WO2016038880A1 (fr) Dispositif et procédé pour calculer une capacité résiduelle de cellule, et support d'enregistrement
WO2018186088A1 (fr) Dispositif de commande de batterie
CN104808151B (zh) 蓄电装置的残存容量推定装置
JP2014176196A (ja) 電池制御装置及び電池制御方法
JP6580784B2 (ja) 電池状態推定装置
JP5904916B2 (ja) バッテリの健全度算出装置および健全度算出方法
JPWO2019123904A1 (ja) 管理装置、及び蓄電システム
WO2019097938A1 (fr) Dispositif d'estimation d'état de batterie

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18781927

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019511104

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18781927

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载