WO2003047902A1 - Battery power source apparatus of electric car - Google Patents

Battery power source apparatus of electric car Download PDF

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Publication number
WO2003047902A1
WO2003047902A1 PCT/JP2002/012468 JP0212468W WO03047902A1 WO 2003047902 A1 WO2003047902 A1 WO 2003047902A1 JP 0212468 W JP0212468 W JP 0212468W WO 03047902 A1 WO03047902 A1 WO 03047902A1
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WO
WIPO (PCT)
Prior art keywords
battery
ecu
vehicle
power supply
slave
Prior art date
Application number
PCT/JP2002/012468
Other languages
English (en)
French (fr)
Inventor
Yoshitada Nakao
Original Assignee
Panasonic Ev Energy Co., Ltd.
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 Panasonic Ev Energy Co., Ltd. filed Critical Panasonic Ev Energy Co., Ltd.
Priority to US10/489,615 priority Critical patent/US7019488B2/en
Priority to DE60231838T priority patent/DE60231838D1/de
Priority to EP02783678A priority patent/EP1462299B1/en
Publication of WO2003047902A1 publication Critical patent/WO2003047902A1/ja

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Classifications

    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • 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
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
    • 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
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • 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
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • Y02T10/62—Hybrid vehicles
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present invention relates to a battery power supply for an electric vehicle that supplies a large amount of electric power for application to a large electric vehicle.
  • a battery power supply device applied as an electric power source for an electric vehicle, a hybrid vehicle, or the like includes a battery module configured by connecting a plurality of (eg, six) storage batteries in series, and further includes a plurality of (eg, 30) batteries. Modules are connected in series to form an assembled battery block, and in order to manage the operating state of the assembled battery block, the voltage, current, and temperature of the assembled battery block are detected, and abnormality detection and various controls are performed based on the detection results. And a battery ECU (Electronic Control Unit) that performs the above operation. It is known that such a battery power supply device is applied to a hybrid vehicle. The battery power supply device supplies driving power to a motor for driving the vehicle, and is charged by electric power from a vehicle generator. Be composed.
  • a battery ECU Electronic Control Unit
  • FIG. 3 shows a configuration of a battery power supply device in which six assembled battery blocks 31 are connected in series and parallel to meet a large power demand.
  • Each battery pack block 31 is connected to a battery ECU 32, and each battery pack block 31 connected in series and parallel is connected to a positive charge / discharge terminal 41 and a negative charge / discharge terminal 42.
  • the operating state is monitored and controlled by the battery ECU 32 each time.
  • the assembled battery block 31 detects the voltage of each battery module, the charge / discharge current of the assembled battery block 31, one or more battery temperatures of the representative battery module, and the environmental temperature of the assembled battery block 31. Sensors (not shown) are provided, and the detection output of each sensor is input to the battery ECU 32.
  • the battery ECU 32 monitors the operating state and occurrence of abnormalities of the assembled battery block 31 based on the input voltage, current, and temperature detection outputs, and installs it in the assembled battery block 31 based on the temperature detection output.
  • the cooling means such as the blower fan is controlled.
  • the detection output such as SOC and voltage is output to the outside as the operating status of the battery pack block 31, and is input to the vehicle control ECU in the case of a hybrid vehicle, and used for charge / discharge control of the battery power supply unit. Is done.
  • a battery ECU is provided for each assembled battery block, so that the power consumed by the battery ECU increases and the vehicle becomes longer. There was a problem that the amount of discharge of the battery used as the power source for the battery ECU when the battery was stopped for a long time became large.
  • each battery ECU stores the required data at that time when the vehicle stops running and enters the halt state, and starts operation using the stored required data at the next start of the vehicle. Therefore, it is necessary to provide a non-volatile memory for storing the data, and as the number of battery ECUs increases, the cost is increased by providing the non-volatile memory in each battery ECU.
  • An object of the present invention is to provide a battery power supply device for an electric vehicle that solves the problem when a battery power supply device is configured by combining a plurality of assembled battery systems. Disclosure of the invention
  • the present invention provides an assembled battery block formed by connecting a plurality of storage batteries in series, and connecting a plurality of assembled battery blocks in parallel or series-parallel to charge the vehicle.
  • the battery ECUs are used to discharge information, and the battery ECUs exchange information with the vehicle ECU on the vehicle side.
  • an address is set for each battery ECU, and a communication means is provided to connect each battery ECU with a communication line, and one battery ECU of the plurality of battery ECUs is connected to the main battery ECU.
  • the other battery ECUs are set as slaves, and each slave battery ECU is supplied with operating power via opening / closing means, and the master battery ECU receives the information on the end of traveling from the vehicle ECU. Then, after collecting and storing the required data from each of the slave battery ECUs, the power supply to each of the slave battery ECUs is stopped by controlling the opening / closing means to be turned off, and information on the start of traveling is input from the vehicle ECU. Open / close control Then, power is supplied to each slave battery ECU, and the stored required data is transmitted from the mass storage battery ECU to each slave battery ECU.
  • one of the plurality of battery ECUs is set as a master battery ECU, and the other is set as a slave battery ECU. Since it is collected and stored in a single battery ECU, the slave battery ECU does not need to have storage means for storing data overnight, and power supply can be stopped, reducing the power consumption of the battery ECU and suspending operation. Even when the time is extended for a long time, it is possible to suppress the consumption of the power battery.
  • power is supplied to each slave battery ECU, and the master battery ECU returns the stored required data to each slave battery ECU, so that the slave battery ECU performs normal battery management. Can be.
  • the operating power can always be supplied to the mass storage battery ECU.However, when the non-volatile memory is provided in the master battery ECU, when the electric vehicle stops driving for a predetermined time or more, the master battery is stopped. By storing the required data of the ECU and the slave battery ECU in the non-volatile memory and then stopping the supply of the operating power, if the vehicle is likely to be inactive for a long time, the power in suspension is likely to be used. Power consumption can be further reduced.
  • FIG. 1 is a block diagram illustrating a configuration of a battery power supply device according to an embodiment of the present invention.
  • Fig. 2 is a block diagram showing the main configuration of the vehicle.
  • FIG. 3 is a block diagram illustrating a configuration of a battery power supply device according to the related art.
  • the present embodiment shows a battery power supply device applied to a power supply for driving a hybrid vehicle that travels by using a motor and an engine together, particularly a large hybrid vehicle.
  • the battery power supply device 1 uses six assembled battery blocks 3a to 3f as shown in FIG.
  • the battery pack block 3a and the battery pack block 3b, the battery pack block 3c and the battery pack block 3d, the battery pack block 3e and the battery pack block 3f are connected in series, respectively, and further connected in series. It is configured so that a large output voltage and output current can be supplied by series-parallel connection where the pairs are connected in parallel.
  • the battery pack block 3a to 3f is a battery module in which six nickel-hydrogen storage batteries are connected in series, and 40 battery modules are connected in series, and the detecting means such as a current sensor, a voltage sensor, and a temperature sensor and a battery are used. It is configured with a cooling fan for cooling. Also, batteries ECU2a to 2f are connected to the battery pack pro- Waits 3a to 3f, respectively, to form battery pack systems A to F.
  • Each battery ECU 2 a to 2 Pama, battery pack block 3 a to 3 f detected by current sensor and voltage sensor, temperature sensor Charge and discharge current and voltage, battery module Based on the voltage and representative temperature in units and the air temperature (environmental temperature) that cools the assembled battery blocks 3a to 3f, the operation status of the assembled battery blocks 3a to 3f is monitored, and the rotation of the cooling fan
  • the SOC which is the amount of electricity stored relative to the battery capacity, is calculated from the detected values of voltage, current, and temperature, and the charging and discharging states that maintain this state are obtained.
  • an abnormal state is detected based on the detection results of the voltage, current, and temperature and the calculation result of the SOC, an abnormality occurrence signal is output to the vehicle ECU.
  • Each of the batteries ECUs 2a to 2f is provided with a network interface (communication means), and each battery ECU 2a to 2f is connected using this network interface. Connected by cable (communication line) 6 to form a battery network.
  • This battery network is connected to a vehicle network on the vehicle side from a network terminal 14 and is connected to a vehicle ECU through the vehicle network.
  • the configuration is such that the battery ECU 2a of the assembled battery system A is the master and the batteries ECU 2b-2f of the other assembled battery systems BF are the slaves.
  • the operating power of each battery ECU2a to 2f is supplied from the vehicle through DC power supply terminal 15 via DC 12V.
  • the other battery ECUs 2b to 2f that are supplied with power and serve as slaves are supplied with power through relay contacts (opening / closing means) 16, and the relay contacts 16 are controlled to open and close by the battery ECU 2a.
  • the battery power supply device 1 having the above configuration is mounted on a vehicle, and as shown in FIG. 2, the discharge power from the positive electrode charging / discharging terminal 11 and the negative electrode charging / discharging terminal 12 passes through the inverter 24 through the traction motor 21. Drive.
  • the power output from the generator 22 mounted on the vehicle is input to the battery power supply 1 from the positive charge / discharge terminal 11 and the negative charge / discharge terminal 12 as charging power through the inverter 25, and is output to each battery block 3a. ⁇ 3 f for charging.
  • the charging and discharging of the battery power supply device 1 is controlled by the vehicle ECU 27 according to the SOC state of the batteries ECU2a to 2f and the running state of the vehicle.
  • the information is transmitted from the vehicle ECU 27 to the master battery E from the network terminal 14 through the in-vehicle network.
  • the CU 2a which is input to the CU 2a collects the SOC data from each of the slave batteries ECU 2b to 2f through the battery network and stores it in the built-in memory.
  • the SOC data is stored in the memory with the address of each slave battery ECU2b-2f.
  • the battery ECU 2a operates the power supply relay to control the relay contact 16 to be turned off. With this control, the power supply to each of the slave batteries ECUs 2b to 2f is cut off, so that the power consumption of the vehicle storage battery 29 is prevented from increasing unnecessarily during the suspension of the operation of the vehicle.
  • the ignition switch 28 When the ignition switch 28 is turned on when the vehicle starts running after the suspension, the information is input from the vehicle ECU 27 to the mass storage battery ECU 2a. “a” controls the power supply relay to turn on the relay contact 16 and activate each of the slave batteries ECU2 b to 2 f. Next, the SOC data stored in the memory is transmitted to each slave battery ECU 2b-2f corresponding to the address through the battery network. Each battery ECU 2a to 2f is ready to manage each of the battery pack blocks 3a to 3f, and can start the battery management operation using the SOC data before operation stop. With this configuration, it is not necessary to provide a non-volatile memory for storing SOC data in each of the slave batteries ECU 2 b to 2 f whose power supply is stopped.
  • the memory may be a volatile memory without using a non-volatile memory, and each of the assembled battery systems A to F has the same configuration and is compatible. With a common configuration, management costs and manufacturing costs can be reduced.
  • the operating power is always supplied to the master battery ECU 2a.
  • the master battery can be stopped when the vehicle is stopped for a long time.
  • the supply of the operating power to the ECU 2a is also stopped, so that the power consumption during the halt of the vehicle can be further reduced.
  • the power supply stop control to the master battery ECU 2a is performed by collecting the SOC data of the slave batteries ECU 2b to 2f through the battery network and storing it in the nonvolatile memory together with its own SOC data After that, the battery ECU 2a itself controls the power supply self-holding circuit to be turned off.
  • the vehicle When the power supply to the mass storage battery ECU 2a is stopped, the vehicle is stopped, that is, approximately 10 minutes to 1 hour after the ignition switch 28 is turned off. Preferably, it is set to be executed. After a lapse of about 10 minutes to 1 hour, the temperature of the battery rises due to charging and discharging during driving, and the temperature of the resistor 19 provided in the rush current prevention circuit has dropped to a steady temperature. However, it is in a state where the battery can be controlled as a new run, and it is a measure to stop the power supply to the battery ECU 2a.
  • the vehicle ECU 27 activates the master battery ECU 2a, and the main battery ECU 2a activates the power supply self-holding circuit. Reads the data stored in the nonvolatile memory and the data stored in the slave battery ECUs 2b to 2f, and stops by transmitting the data to each slave battery ECU 2b to 2f. The previous condition is restored and the vehicle starts running under normal battery management.
  • one of the plurality of battery ECUs is set as a master battery ECU, and the other is set as a slave battery ECU. Since the data is collected and stored in the battery ECU, the power consumption can be stopped because there is no need to provide storage means for saving data in the slave battery ECU, and the battery ECU is consumed. It is suitable not only for reducing power consumption, but also for suppressing power battery consumption when the downtime is long. Power is supplied to each slave battery ECU at the start of driving. And, c from the required de Isseki back to each of the slave battery E CU ⁇ city stored master battery E CU is suitable to perform a normal cell managed by the slave battery E CU

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Description

技術分野
本発明は、 大型の電動車両に適用するための大きな電力を供給する電動車両の 電池電源装置に関するものである。明
田
背景技術
電気自動車やハイプリッ ド車などの電力源として適用される電池電源装置は、 複数 （例えば、 6個） の蓄電池を直列接続して電池モジュールを構成し、 更に、 複数 （例えば、 30個） の電池モジュールを直列接続して組電池ブロックを構成 し、 この組電池ブロックの動作状態を管理するために、 組電池ブロックの電圧、 電流、 温度を検出し、 その検出結果に応じて異常検出や各種制御を行う電池 EC U (E le c t roni c Cont ro l U n i t ) を設けて構成されてい る。 このような電池電源装置はハイブリツド車に適用されたものが知られており、 走行駆動用のモー夕に駆動電力を供給すると共に、 車両の発電機からの電力によ り充電がなされるように構成される。
更に大きな電力が要求される大型車などの場合には、 前記組電池プロックと 前記電池 E CUとを組み合わせた組電池システムを直列又は並列又は直並列に接 続することが構想されている。 図 3は、 6個の組電池ブロック 31を直並列に接 続して大きな電力要求に対応させた電池電源装置の構成を示すものである。 各組 電池プロック 31にはそれそれ電池 E CU 32が接続され、 直並列に接続された 各組電池プロック 31は正極充放電端子 41と負極充放電端子 42に接続され、 各組電池ブロック 31の動作状態はそれそれ電池 ECU 32によって監視、 制御 される。 組電池プロック 3 1には、 前記電池モジュール毎の電圧、 組電池プロック 3 1の充放電電流、 代表電池モジュールの電池温度 1点もしくは複数点、 組電池ブ ロック 3 1の環境温度をそれそれ検出するセンサ （図示せず） が設けられており、 各センサの検出出力はそれそれ電池 E C U 3 2に入力される。 電池 E C U 3 2は 入力された電圧、 電流、 温度の検出出力をもとに組電池ブロック 3 1の動作状態 や異常発生を監視すると共に、 温度検出出力をもとに組電池ブロック 3 1に設け られた送風ファン等の冷却手段を制御する。 また、 入力された電圧、 電流、 温度 の検出出力から S O C ( S t a t e o f C h a r g e =電池容量に対する蓄 電された電気量） を演算する。 この S O Cや電圧等の検出出力などは組電池プロ ック 3 1の動作状態デ一夕として外部出力して、 ハイブリッド車の場合では車両 制御 E C Uに入力され、 電池電源装置に対する充放電制御に利用される。
上記のように複数の組電池システムを組み合わせて電池電源装置を構成した 場合に、 各組電池プロック毎に電池 E C Uが配設されているため、 電池 E C Uが 消費する電力が大きくなり、 車両が長時間にわたって休止した場合に電池 E C U の電源とする電池の放電量が大きくなる問題点があつた。
また、 各電池 E C Uは車両が走行停止して休止状態に入るとき、 その時点で の所要デ一夕を記憶し、 次に車両が始動するとき記憶された所要デ一夕を用いて 動作を開始するために、 デ一夕を記憶する不揮発性メモリを設ける必要があり、 電池 E C Uの数が増えるほどに各電池 E C Uに不揮発性メモリを設けることによ りコストアップになる問題点があった。
本発明が目的とするところは、 複数の組電池システムを組み合わせて電池電 源装置を構成した場合の問題点を解決する電動車両の電池電源装置を提供するこ とにめる。 発明の開示
上記目的を達成するための本発明は、 複数の蓄電池を直列接続して組電池ブ . ロックを形成し、 複数の組電池プロックを並列又は直並列に接続して車両側の充 放電に供すると共に、 各組電池プロックそれそれに組電池プロックの動作状態を 管理する電池 E CUを設け、 電池 E CUは車両側の車両 E CUとの間で情報交換 を行う電動車両の電池電源装置であって、 各電池 E CUにそれそれァドレスを設 定すると共に通信手段を設けて各電池 E CUの間を通信ラインで接続し、 複数の 電池 E CUのうち 1つの電池 E CUをマス夕一に、 その他の電池 E CUをスレ一 ブに設定し、 各スレーブ電池 ECUには開閉手段を介して動作電力を給電し、 前 記マスター電池 ECUは、 車両 E CUから走行終了の情報が入力されたとき、 各 スレ一プ電池 E C Uから所要データを収集して記憶した後、 前記開閉手段をオフ に制御して各スレーブ電池 E C Uに対する給電を停止し、 車両 E C Uから走行開 始の情報が入力されたとき、 開閉手段をォンに制御して各スレーブ電池 E C Uに 給電すると共にマス夕一電池 E C Uから各スレーブ電池 E C Uにそれそれ記憶し た所要デ一夕を伝送するように構成されてなることを特徴とする。
上記構成によれば、 複数の電池 E CUのうちの 1つをマスター電池 E CUと し、 その他をスレーブ電池 ECUとして、 車両の走行終了時に通信手段によりス レープ電池 E CUから所要データをマス夕一電池 E CUに集めて記憶するので、 スレーブ電池 E C Uにはデ一夕保存のための記憶手段を設ける必要がなく、 給電 を停止することができるので電池 E CUの消費電力が減少し、 休止時間が長期に わたつた場合にも電源電池の消耗を抑制することができる。 走行開始時には各ス レーブ電池 E CUに給電し、 マスター電池 E CUは記憶した所要デ一夕を各スレ —ブ電池 E CUに戻すので、 スレーブ電池 E CUは正常な電池管理を実行するこ とができる。
上記構成において、 マス夕一電池 E CUに動作電力を常時給電するように構 成することができるが、 マスター電池 ECUに不揮発性メモリを設け、 所定時間 以上電動車両が走行休止したときには、 マスター電池 E CU及びスレーブ電池 E CUの所要デ一夕を前記不揮発性メモリに記憶させた後、 動作電力の給電を停止 するように構成すると、 長時間休止する可能性が高い車両においては休止中の電 力消費をより削減することができる。 図面の簡単な説明
図 1は、 本発明の実施形態に係る電池電源装置の構成を示すプロック図であ り、
図 2は、 車両側の要部構成を示すブロック図であり、
図 3は、 従来技術に係る電池電源装置の構成を示すプロック図である。 発明を実施するための最良の形態
以下、 添付図面を参照して本発明の実施形態について説明し、 本発明の理解 に供する。 尚、 以下に示す実施形態は本発明を具体化した一例であって、 本発明 の技術的範囲を限定するものではない。
本実施形態は、 モー夕とエンジンとを併用して走行するハイブリッド車、 特 に大型ハイプリッド車の走行駆動用電源に適用した電池電源装置について示すも のである。
大型ハイプリッド車が必要とする大きな負荷電力に対応させるために、 本実 施形態に係る電池電源装置 1は、 図 1に示すように、 6個の組電池ブロック 3 a 〜 3 f を用いて、 組電池プロヅク 3 aと組電池プロヅク 3 b、 組電池プロック 3 cと組電池プロック 3 d、 組電池プロック 3 eと組電池プロック 3 f とをそれそ れ直列接続し、 更に直列接続された 3組を並列に接続した直並列接続により、 大 きな出力電圧と出力電流とが供給できるように構成されている。
前記組電池プロック 3 a〜3 fは、 ニッケル一水素蓄電池を 6個直列接続し た電池モジュールを更に 4 0個直列接続したもので、 電流センサ及び電圧センサ、 温度センサ等の検出手段や電池を冷却するための冷却ファンを設けて構成されて いる。 また、 各組電池プロヅク 3 a〜3 f にはそれそれ電池 E C U 2 a〜2 fが 接続され組電池システム A〜Fに構成される。
各電池 E C U 2 a〜2 :Πま、 電流センサ及び電圧センサ、 温度センサによつ て検出される組電池プロック 3 a〜 3 fの充放電電流及び電圧、 電池モジュール 単位での電圧及び代表温度、 組電池ブロック 3 a〜 3 f を冷却する空気温度 （環 境温度） をもとに組電池ブロック 3 a〜3 fの動作状態を監視し、 冷却ファンの 回転を制御すると共に、 電圧、 電流、 温度の検出値から電池容量に対して蓄電さ れた電気量である S OCを演算し、 これが適正な状態に維持されるような充電及 び放電の状態が得られるように車両側の制御装置である車両 E C Uに要求する。 また、 電圧、 電流、 温度の検出結果や SO Cの演算結果に基づいて異常状態が検 出されたときには、 異常発生信号が前記車両 E C Uに出力される。
電池 E CU 2 a〜2 f にはそれそれネヅトワークィン夕フェース （通信手 段） が設けられており、 このネッ トヮ一クイン夕フェースを用いて各電池 E CU 2 a〜2 fの間を接続ケーブル （通信ライン） 6により接続して電池ネットヮ一 クが構成されている。 この電池ネットワークはネットワーク端子 14から車両側 の車両ネットワークに接続され、 車両ネッ トワークを通じて車両 E CUに接続さ れる。 また、 組電池システム Aの電池 E CU 2 aをマスタ一とし、 他の組電池シ ステム B〜Fの電池 E CU 2 b〜 2 fをスレーブとする構成がなされている。 また、 各電池 E CU2 a〜2 fの動作電力は、 車両側から電源端子 15を通 じて D C 12 Vが供給され、 マス夕一とする電池 E CU 2 aには電源端子 15か ら常時給電され、 スレーブとなる他の電池 ECU2b~2fにはリレー接点 （開 閉手段） 16を通じた給電がなされ、 リレー接点 16はマス夕一電池 ECU 2 a によって開閉制御される。
上記構成になる電池電源装置 1は車両に搭載され、 図 2に示すように、 正極 充放鼋端子 1 1及び負極充放電端子 12からの放電電力によりインバー夕 24を 通じてトラクシヨンモー夕 21を駆動する。 また、 車両に搭載されたジエネレ一 夕 22からの発電出力はィンバ一夕 25を通じて充電電力として正極充放電端子 11及び負極充放電端子 12から電池電源装置 1に入力されて各組電池プロック 3 a〜 3 fの充電に供される。 電池電源装置 1に対する充電及び放電は、 電池 E CU2 a〜2 fの SOC状態や車両の走行状態に応じて車両 ECU27により制 御される。 上記構成において、 運転者により車両のィグニヅシヨンスイッチ 28がオフ に操作されて走行終了となったとき、 その情報は車両 ECU 27から車内ネッ ト ワークを通じてネヅ トワーク端子 14からマスター電池 E CU 2 aに入力される c マス夕一電池 E CU2 aは電池ネットワークを通じて各スレーブ電池 E CU 2 b 〜2 fから SOCデ一夕を収集して内蔵するメモリに格納する。 SOCデ一夕は 各スレーブ電池 E CU2 b〜2 fのアドレスを付けてメモリに格納する。 デ一夕 の収集、 格納が終了すると、 マス夕一電池 ECU 2 aは電源リレーを動作させて リレー接点 16をオフに制御する。 この制御により各スレーブ電池 E CU 2 b〜 2 fの電源は切断されるので、 車両の運転休止中に車両蓄電池 29の電力消費が 徒に増加することが抑制される。
運転休止から車両が走行開始するときに、 ィグニッシヨンスィツチ 28がォ ンに操作されると、 その情報は車両 ECU27からマス夕一電池 ECU2aに入 力されるので、 マス夕一電池 E CU 2 aは電源リレ一を制御してリレー接点 16 をオンとし、 各スレーブ電池 E CU2 b〜2 fを起動する。 次いで、 メモリに格 納している S 0 Cデ一夕をァドレスに対応する各スレーブ電池 E CU 2 b〜2 f に S OCデ一夕を電池ネヅトヮ一クを通じて伝送する。 各電池 E CU 2 a〜2 f は各組電池ブロック 3 a〜3 fを管理する態勢ができ、 運転休止前の SOCデ一 夕を用いて電池管理動作を開始することができる。 この構成により給電停止され る各スレーブ電池 E CU 2 b〜2 fに S O Cデータを記憶するための不揮発性メ モリを設ける必要がない。 また、 マス夕一電池 E CU 2 aは常時給電されている ので、 メモリは不揮発性メモリを用いることなく揮発性メモリでよく、 各組電池 システム A〜Fは同等の構成となり、 互換性のある共通構成により管理コストゃ 製造コストの低減化を図ることができる。
以上説明した実施形態は、 マスター電池 ECU 2 aに対しては動作電力を常 時給電する構成としたが、 マスター電池 ECU 2 aに不揮発性メモリを設けると、 車両の長時間にわたる休止時にマスター電池 E CU 2 aに対する動作電力の給電 も停止して車両の休止中の使用電力をより削減することができる。 マスター電池 E CU 2 aへの給電停止制御は、 スレーブ電池 E CU 2 b〜2 fの SO Cデ一夕を電池ネットワークを通じて収集し、 自らの SO Cデ一夕と共 に不揮発性メモリに格納した後、 マス夕一電池 E C U 2 a自身が電源自己保持回 路をオフに制御することによってなされる。
マス夕一電池 E CU 2 aに対する給電を停止する場合、 車両が運転休止、 即 ちィグニヅシヨンスィツチ 28がオフに操作されてから 10分〜 1時間程度の時 間経過があった後に実行されるように設定するのが好適である。 10分〜 1時間 程度の時間経過があると、 走行時の充放電に伴う電池の温度上昇が治まり、 突入 電流防止回路に設けられている抵抗器 19の温度も定常温度にまで下がっている ので、 新たな走行として電池を制御できる状態にあり、 マス夕一電池 ECU 2 a への給電を停止する目安となる。
車両の走行開始時には、 ィグニッシヨンスィツチ 28がオンに操作されると、 車両 E CU 27がマスター電池 E CU 2 aを起動させ、 マス夕一電池 E CU 2 a は電源自己保持回路を動作させて不揮発性メモリから記憶した自らのデ一夕及び スレーブ電池 E CU 2 b〜2 fのデ一夕を読み出し、 各スレーブ電池 ECU 2 b 〜 2 fにそれぞれのデ一夕を伝送することにより停止前の状態が復元され、 正常 な電池管理のもとに走行が開始される。 産業上の利用可能性
本発明の電池電源装置によれば、 複数の電池 E CUのうちの 1つをマスター電 池 ECUとし、 その他をスレーブ電池 E CUとして、 車両の走行終了時に通信手 段によりスレーブ電池 E CUから所要デ一夕をマス夕一電池 E CUに集めて記憶 するので、 スレーブ電池 E CUにデータ保存のための記憶手段を設ける必要がな く、 給電を停止することができることから、 電池 E CUの消費電力を減少させる ことに適していると共に、 休止時間が長期にわたった場合の電源電池の消耗を抑 制することにも適している。 また、 走行開始時には各スレーブ電池 E CUに給電 し、 マスター電池 E CUが記憶した所要デ一夕を各スレーブ電池 E CUに戻す < とから、 スレーブ電池 E CUにて正常な電池管理を実行することに適している c

Claims

請 求 の 範 囲
1. 複数の蓄電池を直列接続して組電池プロック （3 a〜3f) を形 成し、 複数の組電池ブロック （3 a〜3f) を並列又は直並列に接続して車両側 の充放電に供すると共に、 各組電池プロック （3a〜3f) それそれに組電池ブ ロヅク （3 a〜3 f ) の動作状態を管理する電池 E CUを （2 a〜2 f ) 設け、 この電池 ECU (2 a〜2f) と車両側の車両 ECU (27) との間で情報交換 を行う電動車両の電池電源装置であって、
各電池 ECU (2 a〜2 f) にそれそれアドレスを設定すると共に通信手段 を設けて各電池 ECU (2a〜2 f ) の間を通信ライン （6) で接続し、 複数の 電池 ECU (2 a〜2 f) のうち 1つの電池 ECU (2 a) をマス夕一に、 その 他の電池 ECU (2b〜2f) をスレーブに設定し、 各スレーブ電池 ECU (2 b〜2f) には開閉手段 （16) を介して動作電力を給電し、
前記マスター電池 ECU (2 a) は、 車両 ECU (27) から走行終了の情 報が入力されたとき、 各スレーブ電池 ECU (2b〜2 f) から所要デ一夕を収 集して記憶した後、 前記開閉手段 （16) をオフに制御して各スレーブ電池 EC U (2b〜2f) に対する給電を停止し、 車両 ECU (27) から走行開始の情 報が入力されたとき、 開閉手段 （16) をオンに制御して各スレーブ電池 E CU
(2b〜2f) に給電すると共にマス夕一電池 ECU (2 a) から各スレーブ電 池 ECU (2b〜2f) にそれそれ記憶した所要デ一夕を伝送するように構成さ れてなることを特徴とする電動車両の電池電源装置。
2. マス夕一電池 ECU (2 a) に、 動作電力を常時給電する請求項 1に記載の電動車両の電池電源装置。
3. マス夕一電池 ECU (2 a) は、 不揮発性メモリを備え、 所定時 間以上電動車両が走行休止したときには、 マス夕一電池 ECU (2a) 及ぴスレ ープ電池 ECU (2b〜2f) の所要デ一夕を前記不揮発性メモリに記憶させた 後、 動作電力の給電が停止される請求項 1に記載の電動車両の電池電源装置。
PCT/JP2002/012468 2001-12-06 2002-11-28 Battery power source apparatus of electric car WO2003047902A1 (en)

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US10/489,615 US7019488B2 (en) 2001-12-06 2002-11-28 Battery power source device of electric power vehicle
DE60231838T DE60231838D1 (de) 2001-12-06 2002-11-28 Batterieenergiequellenvorrichtung für ein elektroauto sowie betriebsverfahren dafür
EP02783678A EP1462299B1 (en) 2001-12-06 2002-11-28 Battery power source apparatus of electric car and its method of operation

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