WO2018179855A1 - Dispositif de commande de batterie - Google Patents

Dispositif de commande de batterie Download PDF

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Publication number
WO2018179855A1
WO2018179855A1 PCT/JP2018/003905 JP2018003905W WO2018179855A1 WO 2018179855 A1 WO2018179855 A1 WO 2018179855A1 JP 2018003905 W JP2018003905 W JP 2018003905W WO 2018179855 A1 WO2018179855 A1 WO 2018179855A1
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WO
WIPO (PCT)
Prior art keywords
current
battery
temperature
upper limit
control unit
Prior art date
Application number
PCT/JP2018/003905
Other languages
English (en)
Japanese (ja)
Inventor
晋 山内
啓 坂部
ファニー マテ
大輝 小松
石津　竹規
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
Publication of WO2018179855A1 publication Critical patent/WO2018179855A1/fr

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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
    • H01M10/44—Methods for charging or discharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • 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
    • 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
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a battery control device.
  • Lithium ion secondary batteries are used for in-vehicle batteries mounted on these vehicles.
  • the spread of electric traveling vehicles is required to reduce the price of lithium ion secondary batteries, and natural air cooling is required as a means for this.
  • lithium ion secondary batteries have a temperature range that is used for safety protection and prevention of deterioration, and the temperature change of the battery due to heat generation due to charge / discharge must be controlled to an appropriate usage range. In the case of natural air cooling, this is achieved by controlling the current.
  • Patent Document 1 discloses a method of controlling the charging / discharging current by measuring the temperature of a battery by a temperature measuring means, calculating an allowable current so that the measured temperature does not exceed the upper limit temperature.
  • Patent Document 1 Since the technology described in Patent Document 1 simply suppresses the current uniformly according to the temperature, it also suppresses a short-time current that does not increase in temperature, leading to deterioration in fuel consumption and drivability of the electric vehicle. is there.
  • the battery control device is a battery control device including a control unit that controls a charge / discharge current of a storage battery, wherein the control unit predicts a temperature increase of the storage battery based on a battery temperature and a charge / discharge current amount. And the value of one upper limit charging / discharging current is selected from the value of several upper limit charging / discharging current so that it may not exceed the upper limit temperature of the said storage battery using the prediction result of a temperature rise, and charging / discharging current is controlled.
  • the battery control device of the present invention appropriate temperature control is possible, and charge / discharge control can be performed without impairing the fuel efficiency and driving performance of the electric vehicle.
  • FIG. 1 is an example of the configuration of the battery system 100 according to the present embodiment. Since the output voltage of the battery system 100 is a DC voltage that varies depending on the remaining capacity of the battery, the output current, and the like, it may not be suitable for supplying power directly to the load 111. Therefore, in this embodiment, the inverter 110 controlled by the host controller 112 converts the output voltage of the battery system 100 into a three-phase alternating current and supplies it to the load 111. The same configuration is used when a DC voltage or other multiphase AC or single phase AC is supplied to the load 111.
  • the electric power output from the load 111 can be stored in the battery system 100 by using the inverter 110 as a bidirectional inverter. Further, by connecting the charging system to the battery system 100 in parallel with the inverter 110, the battery system 100 can be charged as necessary.
  • the battery system 100 informs the host controller 112 of information related to the battery state such as the maximum charge current, discharge current (allowable current), battery temperature, battery abnormality, etc. that can be used for controlling the inverter 110 and the load 111. Send.
  • the host controller 112 performs energy management, abnormality detection, and the like based on this information.
  • the host controller 112 determines that the battery system 100 should be disconnected from the inverter 110 or the load 111, the host controller 112 transmits a disconnection instruction to the battery system 100.
  • the battery system 100 includes one or more battery modules 105 including a plurality of batteries, a battery control device 103 that monitors, estimates, and controls the state of the battery system 100, a relay 106 that intermittently outputs the battery system 100, and a battery.
  • a current sensor 108 that measures the flowing current, a voltage sensor 202 that measures the battery voltage, a leakage sensor 203 that measures an insulation resistance between the battery system 100 and, for example, the ground, and a cutoff provided according to the output voltage of the battery system
  • the device 107 is configured.
  • the battery module 105 has a plurality of unit cells, measures the temperature inside the battery module 105 and the voltage of each battery, and performs charge / discharge in units of single cells as necessary. As a result, voltage monitoring and voltage adjustment can be performed in units of single cells, and temperature information necessary for estimating the state of the battery whose characteristics change according to temperature can be measured. Details will be described later.
  • a current sensor 108 and a relay 106 are connected to the battery module 105 in series with the battery module 105. As a result, a current value necessary for monitoring and estimating the state of the battery module 105 can be measured, and the output of the battery system 100 can be interrupted based on a command from the host controller 112.
  • a circuit breaker 107 for manually interrupting power input / output to the battery system 100 may be added. By forcibly shutting off using the circuit breaker 107, it is possible to prevent an electric shock accident or a short-circuit accident when assembling or disassembling the battery system 100 or when dealing with an accident of a device equipped with the battery system 100. It becomes.
  • a relay 106, a circuit breaker 107, and a current sensor 108 may be provided in each row, or the relay 106, circuit breaker only at the output portion of the battery system 100. 107 and a current sensor 108 may be provided. Moreover, the relay 106, the circuit breaker 107, and the current sensor 108 may be provided in both of each column and the output unit of the battery system 100.
  • the relay 106 may be configured by one relay, or may be configured by a set of a main relay, a precharge relay, and a resistor. In the latter configuration, a resistor is arranged in series with the precharge relay, and these are connected in parallel with the main relay.
  • a precharge relay When connecting the relay 106, first a precharge relay is connected. Since the current flowing through the precharge relay is limited by the resistance connected in series, the inrush current that can occur in the former configuration can be limited. Then, after the current flowing through the precharge relay becomes sufficiently small, the main relay is connected.
  • the timing of main relay connection may be based on the current flowing through the precharge relay, or may be based on the voltage applied to the resistor or the voltage across the terminals of the main relay, or the time elapsed since the precharge relay was connected. May be used as a reference.
  • the voltage sensor 202 is connected in parallel to one or a plurality of battery modules 105 or one series of each of the battery modules 105, and measures a voltage value necessary for monitoring and estimating the state of the battery module 105.
  • a leakage sensor 203 is connected to the battery module 105 to detect a state where a leakage can occur before the leakage occurs, that is, a state where the insulation resistance is reduced, thereby preventing an accident from occurring.
  • the values measured by the battery module 105, the current sensor 108, the voltage sensor 202, and the leakage sensor 203 are transmitted to the battery control device 103, and the battery control device 103 performs battery state monitoring, estimation, and control based on the values.
  • the control includes, for example, charge / discharge of each unit battery for equalizing the voltage of each unit battery, power control of each sensor, addressing of the sensor, control of the relay 106 connected to the battery control device 103, and the like. Point to.
  • the CPU 201 performs calculations necessary for battery state monitoring, estimation, and control.
  • the battery control device 103 may incorporate a voltage sensor 202 or a leakage sensor 203.
  • the number of harnesses can be reduced as compared with the case where individual sensors are prepared, and the labor for sensor installation can also be reduced.
  • the scale (maximum output voltage, current, etc.) of the battery system 100 that can be handled by the battery control device 103 is limited by incorporating the sensor, the voltage sensor 202 and the leakage sensor 203 are intentionally different from the battery control device 103. You may give freedom by making it another part.
  • temperature sensors or thermistors for measuring the temperature of the battery and the temperature of the outside air are built in the battery modules 105 and 106.
  • FIG. 2 is a functional block diagram for realizing an upper limit current selection function for determining the upper limit value of the charge / discharge current of the battery system in the CPU 201 that performs various calculations in the battery control apparatus 103.
  • Each function shown in this functional block diagram is realized by the CPU 201 and its software.
  • the temperature-corresponding current control unit 204 obtains the upper limit value of the current by predicting the temperature change of the battery system and the charge / discharge current from information such as the battery temperature, the outside air temperature, and the SOC indicating the battery charge state.
  • the upper / lower limit voltage-corresponding current control unit 205 calculates an upper limit value of the current by calculating a maximum current kept within the upper / lower limit voltage range from information such as the battery voltage, battery temperature, and SOC.
  • the upper limit current selection unit 206 selects the upper limit current based on the upper limit value of the temperature corresponding current control unit 204 or the upper limit value of the upper / lower limit voltage corresponding current control unit 205 based on the charge / discharge current that is actually charged / discharged.
  • FIG. 3 shows an example of a method for determining the upper limit current in the temperature corresponding current control unit 204.
  • FIG. 3A the reached temperatures ahead of the times ⁇ t1, ⁇ tl, ⁇ tq when the predetermined currents i1, il, iq are supplied from the current time t are predicted.
  • FIG. 3B shows the next control cycle of FIG.
  • the current i1 when the current i1 is passed, if the temperature is expected to exceed the upper limit within ⁇ t1, the current is switched to the upper limit current predicted after ⁇ tl seconds.
  • FIG. 3C as well, when the temperature is expected to exceed the upper limit value within ⁇ tl, the current value is changed to iq. In this way, the temperature reached by the battery ahead of a specific time is predicted, and the current is controlled so as not to exceed the upper limit temperature.
  • the upper / lower limit voltage-corresponding current control unit 205 controls the current so as to maintain the upper / lower limit voltage range in the lithium battery, and this technique is a known technique, and is realized by using this technique in the present embodiment.
  • the horizontal axis represents the upper limit value by the temperature-corresponding current control unit 204
  • the vertical axis represents the charge / discharge current at which the battery is actually charged / discharged.
  • the broken line in the figure indicates that the upper limit value by the temperature-corresponding current control unit 204 and the charge / discharge current match. For this reason, the region above the broken line indicates that a current larger than the upper limit value by the temperature corresponding current control unit 204 is charged / discharged, and the current lower than the upper limit value is charged / discharged in the lower region. Has been.
  • the battery temperature tends to reach the upper limit temperature or the margin for the upper limit temperature of the current temperature tends to decrease.
  • the upper limit value by the current control unit 204 is selected.
  • the battery temperature tends to decrease or the margin for the upper limit temperature tends to increase, so the upper limit value by the upper / lower limit voltage corresponding current control unit 205 is selected. To do.
  • FIG. 5 is a flowchart showing the operation of the battery control device 103.
  • the control process related to this embodiment starts in S500, the battery voltage, charge / discharge current, and battery temperature necessary for the control process are detected in S501.
  • the information to detect is an example, In addition to these parameters, parameters that can estimate information on the voltage, current, and temperature of the battery may be used.
  • the upper limit value of the current by the temperature corresponding current control unit 204 and the upper limit value of the current by the upper / lower limit voltage corresponding current control unit 205 are calculated from the detected data.
  • the upper limit value of the upper / lower limit voltage corresponding current control unit 205 is set as the initial value of the upper limit value.
  • the initial value is not limited to this value, and an arbitrary value may be set.
  • the charge / discharge current that is actually charged / discharged is compared with the upper limit value of the charge / discharge current by the temperature corresponding current control unit 204. If the charge / discharge current is larger, the process proceeds to S505, and the upper limit value by the temperature-corresponding current control unit 204 is given priority as the upper limit value of this control. If the charge / discharge current is smaller, the process proceeds to S506, and the upper and lower limits The charging / discharging current is controlled by giving priority to the upper limit value by the voltage corresponding current control unit 205.
  • the battery control device 103 includes a control unit that controls the charge / discharge current of the storage battery 105, and the control unit predicts the temperature increase of the storage battery 105 based on the battery temperature and the amount of charge / discharge current, and the temperature rise
  • the value of one upper limit charge / discharge current is selected from the values of the plurality of upper limit charge / discharge currents so as not to exceed the upper limit temperature of the storage battery 105 using the predicted result, and the charge / discharge current is controlled.
  • appropriate temperature control becomes possible, and charge / discharge control can be performed without impairing the fuel consumption performance and driving performance of the electric vehicle.
  • the control unit of the battery control device 103 includes a temperature-corresponding current control unit 204 that controls current in a range in which the temperature of the storage battery 105 does not exceed the upper limit temperature, and a range in which the voltage of the storage battery 105 does not exceed the upper and lower limit voltage range.
  • An upper / lower limit voltage-corresponding current control unit 205 that controls the current, and the control unit further determines the upper limit charge / discharge current value by the temperature-corresponding current control unit 204 based on the charge / discharge current flowing through the storage battery 105, or the upper limit
  • the priority order is determined so that one of the values of the upper limit charge / discharge current by the lower limit voltage corresponding current control unit 205 is set as the upper limit charge / discharge current.
  • the control unit of the battery control device 103 determines the priority order based on a comparison between the value of the upper limit charge / discharge current obtained by the temperature corresponding current control unit 204 and the charge / discharge current that the storage battery 105 is actually charging / discharging. To do. Thereby, an upper limit charging / discharging current is determined appropriately, and charging / discharging control can be performed without impairing the fuel consumption performance and driving performance of the electric vehicle.
  • the control unit of the battery control device 103 compares the value of the upper limit charge / discharge current by the temperature-corresponding current control unit 204 with the charge / discharge current flowing through the storage battery 105, and the charge / discharge current flowing through the storage battery 105 is controlled by temperature-corresponding current control.
  • the upper limit charging / discharging current value of the temperature-corresponding current control unit 204 is given priority.
  • the value of the upper limit charge / discharge current of the current control unit 205 is prioritized. Thereby, an upper limit charging / discharging current is determined appropriately, and charging / discharging control can be performed without impairing the fuel consumption performance and driving performance of the electric vehicle.
  • the temperature-corresponding current control unit 204 calculates the temperature rise prediction of the storage battery 105 based on the temperature of the storage battery 105 and the amount of charge / discharge current, and the temperature that does not exceed the upper limit temperature of the storage battery 105
  • the upper limit charge / discharge current is controlled on the basis of the conditions for predicting the increase. As a result, the upper limit charge / discharge current can be appropriately controlled, and charge / discharge control can be performed without impairing the fuel efficiency or driving performance of the electric vehicle.
  • 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. .

Abstract

Un inconvénient dans une technique classique est que, étant donné que le courant est uniformément supprimé simplement en fonction de la température, un courant de courte durée qui ne provoque pas d'augmentation de température est également supprimé, ce qui conduit à la détérioration de l'efficacité du carburant et à la baisse de la manœuvrabilité dans un véhicule électrique. À cet effet, l'invention concerne un dispositif de commande de batterie pourvu d'une unité de commande permettant de commander le courant de charge/de décharge d'une batterie de stockage, ladite unité de commande estimant l'élévation de température de la batterie de stockage sur la base d'une température de batterie et d'une quantité de courant de charge/de décharge et commandant le courant de charge/de décharge en sélectionnant, à l'aide du résultat d'estimation de l'augmentation de température, une valeur de courant de charge/de décharge de limite supérieure parmi une pluralité de valeurs de courant de charge/de décharge de limite supérieure de manière à ne pas dépasser la température limite supérieure de la batterie de stockage.
PCT/JP2018/003905 2017-03-30 2018-02-06 Dispositif de commande de batterie WO2018179855A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017067877A JP6827355B2 (ja) 2017-03-30 2017-03-30 電池制御装置
JP2017-067877 2017-03-30

Publications (1)

Publication Number Publication Date
WO2018179855A1 true WO2018179855A1 (fr) 2018-10-04

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PCT/JP2018/003905 WO2018179855A1 (fr) 2017-03-30 2018-02-06 Dispositif de commande de batterie

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WO (1) WO2018179855A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4040567A4 (fr) * 2019-10-02 2022-11-23 Denso Corporation Dispositif de commande de charge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7251357B2 (ja) * 2019-06-28 2023-04-04 株式会社デンソー 車載電源装置の制御装置
WO2022269835A1 (fr) * 2021-06-23 2022-12-29 株式会社EViP Circuit d'alimentation électrique de batterie
KR102604792B1 (ko) * 2021-12-21 2023-11-20 세메스 주식회사 전력 운용 기능을 갖는 물품 반송 차량과 물류 이송 시스템 및 물품 반송 차량의 운용 방법

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Publication number Priority date Publication date Assignee Title
JP2006304572A (ja) * 2005-04-25 2006-11-02 Matsushita Electric Works Ltd 充電装置
JP2009148046A (ja) * 2007-12-12 2009-07-02 Sanyo Electric Co Ltd 充電方法
WO2013061412A1 (fr) * 2011-10-26 2013-05-02 三菱電機株式会社 Appareil permettant de commander un véhicule électrique
WO2015098012A1 (fr) * 2013-12-27 2015-07-02 三洋電機株式会社 Système de commande et alimentation électrique de véhicule
US20160226291A1 (en) * 2015-01-29 2016-08-04 Man Truck & Bus Ag Method and device for limiting the current in a temperature-dependent manner of an energy storage device for electrical energy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006304572A (ja) * 2005-04-25 2006-11-02 Matsushita Electric Works Ltd 充電装置
JP2009148046A (ja) * 2007-12-12 2009-07-02 Sanyo Electric Co Ltd 充電方法
WO2013061412A1 (fr) * 2011-10-26 2013-05-02 三菱電機株式会社 Appareil permettant de commander un véhicule électrique
WO2015098012A1 (fr) * 2013-12-27 2015-07-02 三洋電機株式会社 Système de commande et alimentation électrique de véhicule
US20160226291A1 (en) * 2015-01-29 2016-08-04 Man Truck & Bus Ag Method and device for limiting the current in a temperature-dependent manner of an energy storage device for electrical energy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4040567A4 (fr) * 2019-10-02 2022-11-23 Denso Corporation Dispositif de commande de charge

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