WO2016157405A1 - 車載用蓄電装置 - Google Patents

車載用蓄電装置 Download PDF

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Publication number
WO2016157405A1
WO2016157405A1 PCT/JP2015/060102 JP2015060102W WO2016157405A1 WO 2016157405 A1 WO2016157405 A1 WO 2016157405A1 JP 2015060102 W JP2015060102 W JP 2015060102W WO 2016157405 A1 WO2016157405 A1 WO 2016157405A1
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WO
WIPO (PCT)
Prior art keywords
battery
vehicle
storage battery
control unit
cooling device
Prior art date
Application number
PCT/JP2015/060102
Other languages
English (en)
French (fr)
Inventor
博之 斉藤
英明 谷
和知　敏
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201580078189.9A priority Critical patent/CN107406002B/zh
Priority to JP2017508919A priority patent/JP6485823B2/ja
Priority to US15/560,526 priority patent/US10464424B2/en
Priority to PCT/JP2015/060102 priority patent/WO2016157405A1/ja
Priority to DE112015006393.5T priority patent/DE112015006393T5/de
Publication of WO2016157405A1 publication Critical patent/WO2016157405A1/ja

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    • 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
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • 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
    • 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
    • B60L3/04—Cutting off the power supply under fault conditions
    • 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
    • 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
    • H01M10/65—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
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/05—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/11—Electric energy storages
    • B60Y2400/112—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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • 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
    • Y02T90/14—Plug-in electric 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/907—Electricity storage, e.g. battery, capacitor

Definitions

  • the present invention relates to an on-vehicle power storage device, and more particularly to an on-vehicle power storage device mounted on an automobile that uses electrical energy stored in a battery as a power source.
  • a battery is mounted on a vehicle such as an automobile.
  • This battery temporarily stores electrical energy.
  • a generator is connected to the internal combustion engine with a belt or the like, and the electric energy generated by the generator with the rotation of the internal combustion engine is stored in the battery.
  • the battery By storing electric energy in the battery, even when the internal combustion engine is not rotating and cannot be generated by the generator, electric power necessary for the electric device can be supplied from the battery.
  • the plurality of batteries include a battery for efficiently storing electric energy of the vehicle and a battery used for starting the vehicle.
  • Patent Document 1 An example of a safety measure against a vehicle collision accident is described in Patent Document 1, for example.
  • an electric shock countermeasure is performed by forcibly consuming the energy stored in the battery with a load.
  • the present invention has been made to solve such a problem, and in the event of an accident, the discharge is performed with a large current and the battery is cooled with a cooling device, thereby suppressing the ignition of the battery.
  • An object of the present invention is to obtain an in-vehicle power storage device that can improve safety.
  • the present invention is an in-vehicle power storage device mounted on a vehicle that uses an in-vehicle power source as a power source, and the in-vehicle power source includes one or a plurality of batteries and controls the inside of the in-vehicle power storage device.
  • the in-vehicle power source Connected to the in-vehicle power source by a command from the control unit, the control unit, and a load for forcibly consuming the power charged in the battery of the in-vehicle power source, and driven by a command from the control unit,
  • a cooling device that cools the battery of the in-vehicle power supply, and the control unit forcibly consumes the power of the battery by the load and detects the battery by the cooling device when the collision of the vehicle is detected. Cooling.
  • the in-vehicle power storage device of the present invention in the event of a vehicle collision, the power of the battery is forcibly consumed by the load, and the battery is cooled by the cooling device.
  • the cooling device By discharging with current and cooling the battery with a cooling device, ignition of the battery can be suppressed, and safety can be improved.
  • FIG. 1 is a configuration diagram illustrating an in-vehicle power storage device according to Embodiment 1 of the present invention and a power supply system of a surrounding vehicle.
  • the in-vehicle power storage device 15 is mounted on a vehicle such as an automobile.
  • the “automobile” in this case is not limited to a hybrid car but also includes an electric car.
  • a hybrid vehicle is a vehicle having both a motor driven by electric energy and an internal combustion engine driven by gasoline as power sources.
  • An electric vehicle uses only electric energy output from a battery as a power source.
  • a hybrid vehicle will be described as an example of “automobile”.
  • the in-vehicle power storage device 15 includes a case 13.
  • the case 13 houses the high-voltage storage battery 3, the control unit 6, the load 7, the switch 8, the switch 9, the cooling device 10, the voltage dividing load 11, and the calculation unit 12 inside.
  • a low-voltage storage battery 1, an electric device 2, a generator motor 4, and a voltage conversion device 5 are connected to the in-vehicle power storage device 15.
  • the low voltage storage battery 1 supplies electric power to the electric device 2.
  • the low voltage storage battery 1 is composed of, for example, a lead storage battery.
  • the rated voltage of the low voltage storage battery 1 is, for example, 12V.
  • the electric device 2 includes all electric devices mounted on the vehicle such as an air conditioner, a stereo, a car navigation system, a power window, a power steering, and a light.
  • a collision detection unit 14 is connected to the in-vehicle power storage device 15.
  • the high voltage storage battery 3 is one of power sources for driving the vehicle. In the present embodiment, since a hybrid vehicle is assumed as the vehicle, another power source is an internal combustion engine (see reference numeral 16 in FIG. 3).
  • the high voltage storage battery 3 exchanges power with the generator motor 4. That is, the high voltage storage battery 3 is charged with the electric power from the generator motor 4, and supplies the electric power to the generator motor 4 to drive the generator motor 4.
  • the high voltage storage battery 3 is composed of, for example, a lithium ion battery.
  • the rated voltage of the high voltage storage battery 3 is 400V, for example.
  • the high voltage storage battery 3 is not limited to a lithium ion battery, and may be composed of other batteries.
  • the generator motor 4 is connected to the internal combustion engine 16.
  • a pulley 18 is provided on the rotor shaft 17 of the generator motor 4, and is connected to the internal combustion engine 16 via a belt 19.
  • the generator motor 4 is also rotated by the belt 19.
  • the generator motor 4 rotates, the generator motor 4 generates power.
  • the generated electric energy is charged in the high voltage storage battery 3 or input to the voltage converter 5.
  • voltage conversion is performed on the electric energy and input to the electric device 2 or the low voltage storage battery 1.
  • the electric device 2 consumes the electric energy, and the low voltage storage battery 1 is charged with the electric energy.
  • the voltage converter 5 performs voltage conversion in order to transfer power between the high voltage side and the low voltage side. At this time, if the voltage on the high-voltage side and the low-voltage side are approximately the same potential, the voltage conversion device 5 is not necessary. Therefore, a switch may be provided instead of the voltage conversion device 5.
  • the control unit 6 controls the switch 8, the switch 9, and the cooling device 10.
  • the switch 8 is switched between normal operation and emergency according to a command signal from the control unit 6. During normal operation, the switch 8 connects the low voltage storage battery 1 and the load 7 and causes the load 7 to consume the charging energy of the low voltage storage battery 1. On the other hand, in an emergency, the switch 8 connects the high voltage storage battery 3 and the load 7 and forcibly consumes the charging energy of the high voltage storage battery 3 at the load 7.
  • the switch 9 is connected to the cooling device 10.
  • the cooling device 10 cools the high voltage storage battery 3.
  • the cooling device 10 includes an air cooling fan mounted on the in-vehicle power storage device 15.
  • the switch 9 connects either the low voltage storage battery 1 or the high voltage storage battery 3 to the cooling device 10 according to a command signal from the control unit 6.
  • the switch 9 connects the low voltage storage battery 1 and the cooling device 10 and drives the cooling device 10 using the power of the low voltage storage battery 1.
  • the switch 9 connects the high voltage storage battery 3 and the cooling device 10 via the voltage dividing load 11 and drives the cooling device 10 using the power of the high voltage storage battery 3.
  • the cooling device 10 uses the power of the low voltage storage battery 1, and therefore the cooling device 10 does not support the voltage of the high voltage storage battery 3. Therefore, the voltage dividing load 11 is required.
  • the voltage dividing load 11 lowers the voltage applied from the high voltage storage battery 3 to the cooling device 10 within the driveable voltage range of the cooling device 10 by dividing the voltage.
  • a control unit 12 is connected to the control unit 6.
  • the high voltage storage battery 3 is provided with a current sensor (not shown) and a voltage sensor (not shown).
  • the computing unit 12 computes the state of charge of the high voltage storage battery 3 based on the information from the current sensor and the voltage sensor of the high voltage storage battery 3 and inputs it to the control unit 6.
  • the collision detection unit 14 diverts a collision sensor mounted on an air bag control device (not shown) or the like.
  • the collision detection unit 14 is not limited thereto, and may be provided separately from the collision sensor of the airbag control device.
  • the collision detection unit 14 inputs a detection signal for notifying the collision to the control unit 6.
  • the load 7 consumes electrical energy charged in the high voltage storage battery 3 in an emergency such as a vehicle collision. Specifically, in an emergency, discharge is performed by electrically connecting the electrode of the high voltage storage battery 3 to the load 7.
  • FIG. 4 shows the configuration of the high voltage storage battery 3 and the load 7.
  • FIG. 4 is a cross-sectional view showing the configuration of the high voltage storage battery 3, the load 7, and the cooling device 10.
  • the load 7 is composed of a case 13.
  • Case 13 is formed of a resistor.
  • the case 13 is mounted on the battery mount 20.
  • the case 13 and the battery mount 20 are fixed.
  • the battery mount 20 has sufficient strength to support the case 13.
  • the case 13 also has sufficient strength to protect the high voltage storage battery 3.
  • a cooling device 10 is provided in close contact with the high voltage storage battery 3.
  • the cooling device 10 is composed of an air cooling fan, and the cold air from the air cooling fan is directly applied to the high voltage storage battery 3 to cool the high voltage storage battery 3.
  • the cooling device 10 when the cooling device 10 is driven, the heat generated from the high voltage storage battery 3 is dissipated. Further, the high voltage storage battery 3 and the case 13 are arranged with a gap therebetween. Moreover, the high voltage storage battery 3 and the case 13 are insulated to prevent electric shock and are electrically disconnected. However, a switch 8 is provided between the high voltage storage battery 3 and the case 13, and the switch 21 is switched by a command signal from the control unit 6, so that the electrode 21 of the high voltage storage battery 3 and the case 13 are switched. Are electrically connected through the switch 8.
  • the load 7 is the case 13 itself that is a resistor
  • the switch 8 is switched by the control unit 6 in the event of an emergency such as a collision, so that the load 7 and the electrode of the high-voltage storage battery 3 are connected. Electrical energy charged in the high voltage storage battery 3 is discharged by being electrically connected via the switch 8.
  • FIG. 2 is a flowchart showing a process flow of the control unit 6 of the in-vehicle power storage device 15 according to the first embodiment of the present invention.
  • the processing in FIG. 2 is periodically performed at a constant cycle.
  • the period is, for example, 10 ms, but is not limited thereto, and may be set to an arbitrary period as appropriate.
  • control unit 6 first detects a vehicle collision by the collision detection unit 14 in step S1. If a vehicle collision is not detected, the process ends.
  • step S1 If a vehicle collision is detected in step S1, the process proceeds to step S2.
  • step S ⁇ b> 2 the control unit 6 switches the switch 8 and starts discharging electric energy stored in the high voltage storage battery 3 by the load 7.
  • step S ⁇ b> 3 the control unit 6 drives the cooling device 10 with the electric energy of the high voltage storage battery 3 to cool the high voltage storage battery 3.
  • step S4 based on the current sensor of the high voltage storage battery 3 and the information of the voltage sensor, the calculation unit 12 calculates the charge state of the high voltage storage battery 3.
  • the control unit 6 acquires the calculation result of the charge state of the high voltage storage battery 3 calculated by the calculation unit 12.
  • step S5 the control unit 6 determines whether or not the state of charge of the high voltage storage battery 3 is substantially 0 (the battery is exhausted). If it is substantially 0, the process proceeds to step S6. If the battery is further discharged from about 0 and overdischarged, charging may cause a short circuit inside the battery, which may cause the battery to ignite or smoke, which is dangerous. On the other hand, if it is not substantially 0, the process returns to step S2.
  • step S6 the control unit 6 switches the switch 8 and stops discharging the high voltage storage battery 3 by the load 7.
  • step S7 the control unit 6 stops the cooling device 10 and ends the process.
  • the discharge can be performed with a large current by the load 7 and the high voltage storage battery 3 can be cooled by the cooling device 10 to improve safety.
  • the in-vehicle power storage device 15 is mounted on a vehicle that uses an in-vehicle power source as a power source, and the in-vehicle power source includes the high-voltage storage battery 3 including one or more batteries.
  • the in-vehicle power storage device 15 includes a control unit 6 that performs internal control, a load 7 that is connected to the high voltage storage battery 3 according to a command from the control unit 6 and forcibly consumes the power charged in the high voltage storage battery 3, and a control And a cooling device 10 that is driven by a command from the unit 6 to cool the high-voltage storage battery 3.
  • the control unit 6 When the collision detection unit 14 detects a vehicle collision, the control unit 6 forcibly consumes the power of the high voltage storage battery 3 by the load 7 and cools the high voltage storage battery 3 by the cooling device 10.
  • the in-vehicle power storage device 15 discharges the high voltage storage battery 3 with a large current in the event of an accident, and cools the high voltage storage battery 3 with the cooling device 10. By performing, it can suppress that the high voltage storage battery 3 becomes high temperature, and can prevent ignition of the high voltage storage battery 3 beforehand, Therefore Safety can be improved.
  • the on-vehicle power storage device 15 further includes a voltage dividing load 11 provided between the high voltage storage battery 3 and the cooling device 10.
  • the control unit 6 connects the high voltage storage battery 3 and the cooling device 10 via the voltage dividing load 11, and divides the voltage of the high voltage storage battery 3 by the voltage dividing load 11.
  • the pressed voltage was applied to the cooling device 10.
  • the cooling device 10 is configured by an air cooling fan, and the cold air from the air cooling fan is directly applied to the high voltage storage battery 3.
  • the cooling air of the cooling device 10 can be directly applied to the high voltage storage battery 3, the high voltage storage battery 3 that has generated heat due to the large current discharge can be efficiently cooled, and thus safety can be improved.
  • the cooling device 10 is not limited to an air cooling type such as an air cooling fan, and may be a water cooling type.
  • the voltage is reduced by the voltage dividing load 11, but the voltage is not limited to voltage division, and may be reduced by voltage conversion means using a transformer.
  • cooling device 10 is driven at the time of a collision is not based on a signal from the control unit 6 inside the in-vehicle power storage device 15, but may be based on an external signal from the engine control unit, for example. good.
  • the load 7 is configured from the case 13 made of a resistor, the present invention is not limited to this, and a resistor for configuring the load 7 may be separately provided in the in-vehicle power storage device 15.
  • the high voltage storage battery 3 may be composed of a single battery or a plurality of batteries.

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Abstract

　車載用蓄電装置は、内部の制御を行う制御部６と、制御部６からの指令によりスイッチ８を介して高電圧蓄電池３に接続されて高電圧蓄電池３に充電された電力を強制消費する負荷７と、制御部６からの指令により駆動されて高電圧蓄電池３を冷却する冷却装置１０とを備えている。制御部６は、衝突検知部１４により、車両の衝突を検知した場合に、負荷７により高電圧蓄電池３の電力を強制消費させるとともに、冷却装置１０により高電圧蓄電池３を冷却する。

Description

車載用蓄電装置
　本発明は車載用蓄電装置に関し、特に、電池に蓄えられた電気エネルギーを動力源とする自動車に搭載される車載用蓄電装置に関する。
　一般に、自動車等の車両には、電池が搭載されている。この電池には、一時的に、電気エネルギーが蓄えられる。蓄電方法としては、例えば内燃機関にベルト等で発電機を接続しておき、内燃機関の回転に伴って発電機で発電された電気エネルギーを当該電池に蓄える。こうして、電池に電気エネルギーを蓄えておくことで、内燃機関が回転しておらず発電機で発電できないような状態であっても、電気機器に必要な電力を電池から供給することができる。
　また、近年、減速時の車両のエネルギーを効率良く電気エネルギーに変換して電池に充電するために、複数の電池を搭載する車両が開発されている。当該複数の電池には、車両の電気エネルギーを効率良く蓄えるための電池と、車両の始動等に使用される電池とが含まれる。
　これらの電池、および、当該電池から電気機器への配線は、通常、乗員あるいは整備作業者が直接触れることができないように絶縁処理がなされている。しかしながら、車両が衝突した際には、絶縁部分が破壊され、乗員あるいは整備作業者が感電する可能性がある。
　車両の衝突事故に対する安全対策の一例は、例えば特許文献１に記載されている。特許文献１では、万一、事故が起きた場合に、電池内部に蓄えられたエネルギーを負荷で強制消費することで、感電対策を行っている。
特許第３８９３９６５号公報
　上記の特許文献１においては、車両の衝突後、電力消費のために、電池内部に蓄えられたエネルギーを負荷によって放電している。しかしながら、負荷の抵抗によっては大電流で放電することになる。その結果、電池が発熱し、発火する恐れがある。
　本発明は、かかる課題を解決するためになされたものであり、万一事故が起きた場合に、大電流での放電行うと共に、冷却装置で電池の冷却を行うことで、電池の発火を抑え、安全性の向上を図ることが可能な、車載用蓄電装置を得ることを目的としている。
　本発明は、車載用電源を動力源とする車両に搭載される車載用蓄電装置であって、前記車載用電源は、単数または複数の電池を含み、前記車載用蓄電装置の内部の制御を行う制御部と、前記制御部からの指令により前記車載用電源に接続され、前記車載用電源の前記電池に充電された電力を強制消費する負荷と、前記制御部からの指令により駆動されて、前記車載用電源の前記電池を冷却する冷却装置とを備え、前記制御部は、前記車両の衝突を検知した場合に、前記負荷により前記電池の電力を強制消費させるとともに、前記冷却装置により前記電池を冷却する。
　本発明の車載用蓄電装置によれば、車両の衝突時に、負荷により電池の電力を強制消費させるとともに、冷却装置により電池を冷却するようにしたので、万一事故が起きた場合にも、大電流での放電行うと共に、冷却装置で電池の冷却を行うことで、電池の発火を抑え、安全性の向上を図ることができる。
本発明の実施の形態１に係る車載用蓄電装置を設けた内燃機関の電源系の構成を示した構成図である。 本発明の実施の形態１に係る車載用蓄電装置の制御装置の処理を示すフローチャートである。 本発明の実施の形態１における発電電動機と内燃機関との接続の一例を示した構成図である。 本発明の実施の形態１におけるケースと高電圧蓄電池との構成の一例を示した断面図である。
　以下、本発明に係る車載用蓄電装置の実施の形態を図面に基づいて詳細に説明する。なお、以下に説明する実施の形態は、本発明を具体化する際の一形態であって、本発明をその範囲に限定するためのものではない。
　実施の形態１．
　図１は、本発明の実施の形態１に係る車載用蓄電装置とその周辺の車両の電源系を示した構成図である。
　図１において、車載用蓄電装置１５は、自動車等の車両に搭載されている。この場合の「自動車」としては、ハイブリッド自動車に限らず、電気自動車も含む。ハイブリッド自動車とは、電気エネルギーで駆動されるモータとガソリンで駆動される内燃機関とを動力源として併せ持つ自動車である。また、電気自動車とは、電池から出力される電気エネルギーのみを動力源とする。但し、以下では、「自動車」として、ハイブリッド自動車を例に挙げて説明する。
　図１に示すように、車載用蓄電装置１５は、ケース１３を備えている。ケース１３は、高電圧蓄電池３、制御部６、負荷７、スイッチ８、スイッチ９、冷却装置１０、分圧用負荷１１、および、演算部１２を、内部に収容している。
　また、図１に示すように、車載用蓄電装置１５には、低電圧蓄電池１、電気機器２、発電電動機４、および、電圧変換装置５が接続されている。低電圧蓄電池１は、電気機器２に電力を供給する。低電圧蓄電池１は、例えば、鉛蓄電池から構成される。低電圧蓄電池１の定格電圧は例えば１２Ｖである。電気機器２には、例えば、エアコン、ステレオ、カーナビ、パワーウインドウ、パワーステ、ライトなどの、車両に搭載された電気機器全般が含まれる。また、車載用蓄電装置１５には、衝突検知部１４が接続されている。
　高電圧蓄電池３は、車両を駆動するための動力源の１つである。本実施の形態では、車両としてハイブリッド自動車を想定しているので、もう１つの動力源は内燃機関（図３の符号１６参照）である。高電圧蓄電池３は、発電電動機４との間で電力の授受を行う。すなわち、高電圧蓄電池３は、発電電動機４からの電力で充電を行うとともに、発電電動機４に電力を供給して発電電動機４の駆動を行う。高電圧蓄電池３は、例えばリチウムイオン電池から構成される。高電圧蓄電池３の定格電圧は例えば４００Ｖである。但し、高電圧蓄電池３はリチウムイオン電池に限定されず、他の電池から構成してもよい。
　発電電動機４は、内燃機関１６に接続されている。例えば、図３に示すように、発電電動機４の回転子軸１７にプーリ１８が設けられ、ベルト１９を介して、内燃機関１６と接続される。内燃機関１６が回転すると、ベルト１９により、発電電動機４も回転する。発電電動機４が回転すると、発電電動機４により発電が行われる。発電された電気エネルギーは、高電圧蓄電池３に充電されるか、あるいは、電圧変換装置５に入力される。電圧変換装置５では、当該電気エネルギーに対して、電圧変換を行い、電気機器２または低電圧蓄電池１に入力する。電気機器２は当該電気エネルギーを消費し、低電圧蓄電池１は当該電気エネルギーで充電を行う。
　電圧変換装置５は、高圧側と低圧側との間の電力授受を行うために、電圧の変換を行う。このとき、高圧側と低圧側の電圧がほぼ同電位であれば、電圧変換装置５は不要となる。従って、電圧変換装置５の代わりに、スイッチを設けるようにしてもよい。
　制御部６は、スイッチ８、スイッチ９、および、冷却装置１０を制御する。
　スイッチ８は、制御部６からの指令信号により、通常運転時と非常時とで切り替わる。通常運転時は、スイッチ８は、低電圧蓄電池１と負荷７とを接続し、低電圧蓄電池１の充電エネルギーを負荷７で消費させる。一方、非常時には、スイッチ８は、高電圧蓄電池３と負荷７とを接続し、高電圧蓄電池３の充電エネルギーを負荷７で強制的に消費させる。
　スイッチ９は、冷却装置１０に接続されている。冷却装置１０は、高電圧蓄電池３の冷却を行う。冷却装置１０は、車載用蓄電装置１５に搭載される空冷ファンから構成される。スイッチ９は、制御部６からの指令信号により、低電圧蓄電池１と高電圧蓄電池３とのいずれか一方を、冷却装置１０に接続する。通常運転時は、スイッチ９は、低電圧蓄電池１と冷却装置１０とを接続し、低電圧蓄電池１の電力を用いて冷却装置１０を駆動させる。非常時には、スイッチ９は、分圧用負荷１１を介して高電圧蓄電池３と冷却装置１０とを接続し、高電圧蓄電池３の電力を用いて冷却装置１０を駆動する。このように、通常運転時には、冷却装置１０は低電圧蓄電池１の電力を使用しているため、冷却装置１０は高電圧蓄電池３の電圧に対応していない。そのため、分圧用負荷１１が必要となる。
　分圧用負荷１１は、高電圧蓄電池３から冷却装置１０に印加する電圧を、分圧により、冷却装置１０の駆動可能電圧範囲内に低くする。
　制御部６には、演算部１２が接続されている。高電圧蓄電池３には、電流センサ（図示せず）および電圧センサ（図示せず）が設けられている。演算部１２は、高電圧蓄電池３の電流センサおよび電圧センサからの情報を基に、高電圧蓄電池３の充電状態を演算して、制御部６に入力する。
　衝突検知部１４は、エアバッグ用制御装置（図示せず）等に搭載されている衝突センサを流用する。ただし、衝突検知部１４は、その場合に限らず、エアバッグ用制御装置の衝突センサとは別個に設けるようにしてもよい。衝突検知部１４は、車両の衝突を検知した場合に、それを通知するための検知信号を制御部６に入力する。
　負荷７は、車両の衝突などの非常時に、高電圧蓄電池３に充電された電気エネルギーを消費する。具体的には、非常時に、負荷７に高電圧蓄電池３の電極が電気的に接続することで、放電が行われる。図４に、高電圧蓄電池３と負荷７の構成を示す。
　図４は、高電圧蓄電池３、負荷７、および、冷却装置１０の構成を示した断面図である。図４に示すように、本実施の形態では、負荷７はケース１３から構成されている。ケース１３は抵抗体から構成されている。ケース１３は、バッテリーマウント２０に搭載されている。ケース１３とバッテリーマウント２０とは固定されている。バッテリーマウント２０は、ケース１３を支えるのに十分な強度を有している。また、ケース１３も、高電圧蓄電池３を保護するのに十分な強度を有している。図４に示すように、高電圧蓄電池３に対して冷却装置１０が密接して設けられている。冷却装置１０は空冷ファンから構成され、空冷ファンからの冷風が、直接、高電圧蓄電池３に当てられ、高電圧蓄電池３が冷却される。こうして、冷却装置１０が駆動されることにより、高電圧蓄電池３からの発熱は放熱される。また、高電圧蓄電池３とケース１３とは、互いに隙間を隔てて配置されている。また、高電圧蓄電池３とケース１３とは、感電防止のための絶縁処理がなされていて、電気的に遮断されている。但し、高電圧蓄電池３とケース１３との間には、スイッチ８が設けられており、制御部６からの指令信号により、スイッチ８が切り替えられることで、高電圧蓄電池３の電極２１とケース１３とがスイッチ８を介して電気的に接続される。このように、本実施の形態では、負荷７は抵抗体であるケース１３自体であり、衝突等の非常時に、制御部６によりスイッチ８が切り替えられ、負荷７と高電圧蓄電池３の電極とがスイッチ８を介して電気的に接続することで、高電圧蓄電池３に充電された電気エネルギーが放電される。
　図２は、本発明の実施の形態１に係る車載用蓄電装置１５の制御部６の処理の流れを示したフローチャートである。図２の処理は、一定の周期で、定期的に実施される。当該周期は、例えば１０ｍｓとするが、これに限定することなく、適宜、任意の周期に設定すればよい。
　図２に示すように、制御部６は、まず、ステップＳ１では、衝突検知部１４により車両の衝突を検知する。車両の衝突を検知していない場合は、そのまま処理を終了する。
　ステップＳ１で車両の衝突を検知した場合は、ステップＳ２に進む。ステップＳ２では、制御部６は、スイッチ８を切替え、負荷７により、高電圧蓄電池３の内部に蓄えられた電気エネルギーの放電を開始する。
　ステップＳ３では、制御部６は、高電圧蓄電池３の電気エネルギーで、冷却装置１０を駆動して、高電圧蓄電池３を冷却する。
　ステップＳ４では、高電圧蓄電池３の電流センサおよび電圧センサの情報を基に、演算部１２で高電圧蓄電池３の充電状態を演算する。制御部６は、演算部１２で演算された高電圧蓄電池３の充電状態の演算結果を取得する。
　ステップＳ５では、制御部６は、高電圧蓄電池３の充電状態が略０（電池がなくなった状態）か否かを判定する。略０の場合はステップＳ６に進む。略０からさらに放電し、過放電となった場合、充電すると電池内部で短絡が発生し、電池が発火や発煙に至る可能性あるため、危険である。一方、略０でない場合は、ステップＳ２の処理に戻る。
　ステップＳ６では、制御部６は、スイッチ８を切り替え、負荷７による高電圧蓄電池３の放電を停止する。
　ステップＳ７では、制御部６は、冷却装置１０を停止し、処理を終了する。
　これにより、万一事故が起きた場合に、負荷７による大電流での放電行うと共に、冷却装置１０で高電圧蓄電池３の冷却を行うことで、安全性を向上できる。
　以上のように、本実施の形態に係る車載用蓄電装置１５は、車載用電源を動力源とする車両に搭載され、車載用電源は単数または複数の電池を含む高電圧蓄電池３から構成されている。車載用蓄電装置１５は、内部の制御を行う制御部６と、制御部６からの指令により高電圧蓄電池３に接続されて高電圧蓄電池３に充電された電力を強制消費する負荷７と、制御部６からの指令により駆動されて高電圧蓄電池３を冷却する冷却装置１０とを備えている。制御部６は、衝突検知部１４により車両の衝突を検知した場合に、負荷７により高電圧蓄電池３の電力を強制消費させるとともに、冷却装置１０により高電圧蓄電池３を冷却する。当該構成により、本実施の形態に係る車載用蓄電装置１５は、万一事故が起きた場合に、高電圧蓄電池３の大電流での放電行うと共に、冷却装置１０で高電圧蓄電池３の冷却を行うことで、高電圧蓄電池３が高温になることを抑え、高電圧蓄電池３の発火を未然に防止できるため、安全性を向上することができる。
　また、本実施の形態に係る車載用蓄電装置１５は、高電圧蓄電池３と冷却装置１０との間に設けられた分圧用負荷１１をさらに備えている。制御部６は、車両の衝突を検知した場合に、分圧用負荷１１を介して高電圧蓄電池３と冷却装置１０とを接続し、分圧用負荷１１により高電圧蓄電池３の電圧を分圧し、分圧した電圧を冷却装置１０に印加するようにした。これにより、高電圧対応の冷却装置を設ける必要がないため、低コストで、車載用蓄電装置１５を作製することができる。
　また、本実施の形態に係る車載用蓄電装置１５においては、冷却装置１０を空冷ファンから構成し、空冷ファンからの冷風を高電圧蓄電池３に直接当てる構成にした。このように、冷却装置１０の冷却風を高電圧蓄電池３に直接当てることが出来るため、大電流放電に伴って発熱した高電圧蓄電池３を効率よく冷却出来るため、安全性を向上することができる。
　なお、冷却装置１０は空冷ファンのような空冷式の場合に限られず、水冷式であっても良い。
　なお、本実施の形態においては、分圧用負荷１１により降圧しているが、分圧に限らず、トランスによる電圧変換手段で降圧してもよい。
　なお、衝突時の冷却装置１０駆動有無を、車載用蓄電装置１５内部の制御部６からの信号を基に実施するのではなく、外部の例えばエンジン制御部等の信号を基に実施しても良い。
　なお、負荷７を抵抗体からなるケース１３から構成するとしたが、その場合に限らず、車載用蓄電装置１５内に負荷７を構成するための抵抗体を別途設けるようにしても良い。
　なお、高電圧蓄電池３は、単数の電池から構成しても、複数の電池から構成してもよいことは言うまでもない。

Claims (3)

  1. 　車載用電源を動力源とする車両に搭載される車載用蓄電装置であって、
    　前記車載用電源は、単数または複数の電池を含み、
    　前記車載用蓄電装置の内部の制御を行う制御部と、
    　前記制御部からの指令により前記車載用電源に接続され、前記車載用電源の前記電池に充電された電力を強制消費する負荷と、
    　前記制御部からの指令により駆動されて、前記車載用電源の前記電池を冷却する冷却装置と
    　を備え、
    　前記制御部は、前記車両の衝突を検知した場合に、前記負荷により前記電池の電力を強制消費させるとともに、前記冷却装置により前記電池を冷却する
    　車載用蓄電装置。
  2. 　前記車載用電源の前記電池と前記冷却装置との間に設けられた分圧部をさらに備え、
    　前記制御部は、前記車両の衝突を検知した場合に、前記分圧部を介して前記電池と前記冷却装置とを接続し、前記分圧部により前記電池の電圧を分圧し、分圧した電圧を前記冷却装置に印加する
    　請求項１に記載の車載用蓄電装置。
  3. 　前記冷却装置は、空冷ファンから構成され、
    　前記空冷ファンからの冷風を前記電池に直接当てることで、前記電池を冷却する
    　請求項１または２に記載の車載用蓄電装置。
PCT/JP2015/060102 2015-03-31 2015-03-31 車載用蓄電装置 WO2016157405A1 (ja)

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