WO2016132641A1 - 車両用電源装置及び冷却回路 - Google Patents
車両用電源装置及び冷却回路 Download PDFInfo
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- WO2016132641A1 WO2016132641A1 PCT/JP2015/085068 JP2015085068W WO2016132641A1 WO 2016132641 A1 WO2016132641 A1 WO 2016132641A1 JP 2015085068 W JP2015085068 W JP 2015085068W WO 2016132641 A1 WO2016132641 A1 WO 2016132641A1
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- Prior art keywords
- cooling
- battery module
- cooling unit
- converter
- battery
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- 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
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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- 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
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
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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
- 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
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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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
- 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
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- 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
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- 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
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- 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
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- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
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- 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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- 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
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/667—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an electronic component, e.g. a CPU, an inverter or a capacitor
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- 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
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- 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
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
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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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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- 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
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- 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
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- 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 vehicle power supply device and a cooling circuit provided in an electric vehicle or the like.
- Patent Document 2 A vehicle power supply apparatus that includes a battery and a high-voltage system device and cools them with the same cooling circuit is known (see, for example, Patent Documents 1 to 3).
- the cooling circuit described in Patent Document 2 includes a DC-DC converter that is a high-voltage system device, two high-voltage system cooling units that cool the charger, and a battery cooling unit that cools the battery. All are connected in series, and the battery cooling section is disposed downstream of the two high-voltage system cooling sections.
- the management temperature of the battery is generally lower than the management temperature of the high-voltage equipment, it is necessary to cool the battery preferentially.
- the high-voltage equipment cooling section Since the battery cooling unit is disposed on the downstream side of the battery, the high voltage battery may not be appropriately cooled due to the influence of the high voltage system equipment.
- the present invention provides a vehicle power supply apparatus that can cool a battery and a high-voltage system device with the same cooling circuit, and can reliably cool them while reducing pressure loss and suppressing the discharge capacity of a cooling pump. And providing a cooling circuit.
- the present invention provides the following aspects.
- the first aspect is A plurality of battery modules (for example, battery modules 31 to 33 in the embodiments described later) each having a plurality of batteries (for example, high voltage batteries 31a to 33a in the embodiments described later); High-voltage equipment (for example, a DC-DC converter 22 and a charger 21 in the embodiment described later), A plurality of battery module cooling units (for example, battery module cooling units 131 to 133 in the embodiments described later) for cooling the plurality of battery modules, and a high-pressure system cooling unit (for example, implementation described later) for cooling the high-voltage devices And a cooling circuit (for example, a cooling circuit 100 according to an embodiment to be described later) having a cooling circuit (for example, a vehicle power supply device 1 according to an embodiment to be described later).
- a cooling circuit for example, a cooling circuit 100 according to an embodiment to be described later
- a cooling circuit for example, a vehicle power supply device 1 according to an embodiment to be described later.
- the plurality of battery module cooling units are connected in parallel, On the upstream side of the plurality of battery module cooling units, a branching unit (for example, a branching unit 108 in an embodiment described later) is provided, A merging portion (for example, a merging portion 109 in an embodiment described later) is provided on the downstream side of the plurality of battery module cooling portions, The high-pressure equipment cooling unit is provided on the downstream side of the junction.
- a branching unit for example, a branching unit 108 in an embodiment described later
- a merging portion for example, a merging portion 109 in an embodiment described later
- the high-pressure equipment cooling unit is provided on the downstream side of the junction.
- the second aspect is A vehicle power supply device according to a first aspect
- the high-voltage system device includes a DC-DC converter (for example, a DC-DC converter 22 in an embodiment described later) and a charger (for example, a charger 21 in an embodiment described later),
- the high-voltage equipment cooling unit includes a DC-DC converter cooling unit that cools the DC-DC converter (for example, a DC-DC converter cooling unit 122 in an embodiment described later), and a charger cooling unit that cools the charger.
- the DC-DC converter cooling part and the charger cooling part are arranged in parallel downstream of the junction part.
- the third aspect is A vehicle power supply device according to a second aspect,
- the cooling circuit has flow rate control means (for example, an orifice 107 in an embodiment described later) on the upstream side or the downstream side of the DC-DC converter cooling unit.
- the fourth aspect is A vehicle power supply device according to first to third aspects,
- the cooling circuit is A bypass flow path (for example, a bypass flow in an embodiment described later) that connects the upstream side of the plurality of battery module cooling units to the upstream side of the high-pressure system cooling unit and the downstream side of the plurality of battery module cooling units.
- a flow path switching device for example, an electromagnetic three-way valve 106 in an embodiment described later provided on the upstream side of the plurality of battery module cooling units.
- the fifth aspect is A vehicle power supply device according to a fourth aspect,
- the flow path switching device is an electromagnetic valve (for example, an electromagnetic three-way valve 106 according to an embodiment described later).
- the sixth aspect is A vehicle power supply device according to a fourth or fifth aspect,
- the flow path switching device includes an electromagnetic three-way valve (for example, an electromagnetic three-way valve 106 according to an embodiment described later) provided at a branch portion between the bypass flow path and a plurality of upstream flow paths of the battery module cooling section. ).
- an electromagnetic three-way valve for example, an electromagnetic three-way valve 106 according to an embodiment described later
- the seventh aspect is A radiator (for example, a radiator 101 in an embodiment described later); A cooling pump (for example, a cooling pump 102 in an embodiment described later); A plurality of battery module cooling units for cooling a plurality of battery modules (for example, battery module cooling units 131 to 133 in the embodiments described later); A cooling circuit (for example, a cooling circuit 100 according to an embodiment described later) having a high pressure system cooling unit (for example, a high voltage system cooling unit 120 according to an embodiment described later) that cools the high-pressure system device,
- the plurality of battery module cooling units are connected in parallel, On the upstream side of the plurality of battery module cooling units, a branching unit (for example, a branching unit 108 in an embodiment described later) is provided, A merging portion (for example, a merging portion 109 in an embodiment described later) is provided on the downstream side of the plurality of battery module cooling portions,
- the high-pressure equipment cooling unit is provided on the downstream side of the junction.
- the eighth aspect is A cooling circuit according to a seventh aspect,
- the high-voltage equipment cooling unit is a DC-DC converter cooling unit (for example, a DC-DC converter cooling unit 122 of an embodiment described later) that cools a DC-DC converter (for example, a DC-DC converter 22 of an embodiment described later).
- a charger cooling unit for example, a charger cooling unit 121 of an embodiment described later for cooling a charger (for example, a charger 21 of an embodiment described later)
- the DC-DC converter cooling part and the charger cooling part are arranged in parallel downstream of the junction part.
- the ninth aspect is A cooling circuit according to an eighth aspect, On the upstream side or downstream side of the DC-DC converter cooling unit, flow rate control means (for example, an orifice 107 in an embodiment described later) is provided.
- flow rate control means for example, an orifice 107 in an embodiment described later
- the tenth aspect is A cooling circuit according to seventh to ninth aspects,
- a bypass flow path (for example, a bypass flow in an embodiment described later) that connects the upstream side of the plurality of battery module cooling units to the upstream side of the high-voltage system cooling unit and the downstream side of the plurality of battery module cooling units.
- a flow path switching device (for example, an electromagnetic three-way valve 106 in an embodiment described later) provided on the upstream side of the plurality of battery module cooling units.
- the eleventh aspect is A cooling circuit according to a tenth aspect
- the flow path switching device is a cooling circuit that is an electromagnetic valve (for example, an electromagnetic three-way valve 106 in an embodiment described later).
- the twelfth aspect is A cooling circuit according to the tenth or eleventh aspect,
- the flow path switching device includes an electromagnetic three-way valve (for example, an electromagnetic three-way valve 106 according to an embodiment described later) provided at a branch portion between the bypass flow path and a plurality of upstream flow paths of the battery module cooling section. ).
- an electromagnetic three-way valve for example, an electromagnetic three-way valve 106 according to an embodiment described later
- the battery module cooling unit is disposed upstream of the high-voltage system cooling unit, the temperature of the high-voltage system is affected even when both the battery and the high-voltage system are cooled.
- a battery having a low management temperature inferior in heat resistance
- the plurality of battery module cooling units are connected in parallel, a temperature difference between the battery module positioned on the upstream side and the battery module positioned on the downstream side can be suppressed.
- the cooling pump can be reduced in size and weight.
- the DC-DC converter cooling unit and the charger cooling unit which are high-voltage system cooling units, are arranged in parallel, the DC-DC converter cooling unit and the charger cooling unit are The pressure loss can be reduced as compared with the case where they are arranged in series. Even if the required refrigerant flow rates of the DC-DC converter cooling unit and the charger cooling unit are different, the required refrigerant flow rate can be supplied to each cooling unit without waste, so that the discharge capacity of the cooling pump can be suppressed. it can.
- the flow rate control means is provided on the upstream side or downstream side of the DC-DC converter cooling unit, the refrigerant flow rate supplied to the DC-DC converter cooling unit can be adjusted with high accuracy, and The remaining refrigerant flow rate can be supplied to the charger cooling unit with a large required refrigerant flow rate to cool the charger reliably.
- the refrigerant supply to the battery module cooling section can be performed with a simple circuit configuration. It can be selectively blocked.
- the flow path switching device is constituted by a solenoid valve, the battery temperature can be appropriately managed based on the flow path switching control according to the battery request.
- the flow path switching device is composed of the electromagnetic three-way valve provided at the branch portion between the bypass flow path and the flow path upstream of the battery module cooling section. Based on the switching control of the three-way valve, it is possible to select a state in which the total amount of refrigerant is supplied to the battery module cooling unit and the high-pressure system cooling unit and a state in which only the high-pressure system cooling unit is supplied.
- FIG. 1 is a schematic side view of a vehicle equipped with a vehicle power supply device according to an embodiment of the present invention. It is a disassembled perspective view which shows the battery unit of the vehicle power supply device which concerns on embodiment of this invention. It is an internal top view which shows the battery unit of the vehicle power supply device which concerns on embodiment of this invention. It is a circuit diagram which shows the structure of the cooling circuit of the vehicle power supply device which concerns on embodiment of this invention. It is a schematic block diagram of the cooling circuit of the power supply device for vehicles concerning the embodiment of the present invention.
- FIG. 6 is a schematic block diagram illustrating a refrigerant flow when the electromagnetic three-way valve is OFF in the cooling circuit of FIG. 5. It is a schematic block diagram which shows the refrigerant
- a vehicle power supply device 1 As shown in FIG. 1, a vehicle power supply device 1 according to an embodiment of the present invention mainly includes a plurality of battery modules 31 to 33, a DC-DC converter 22, a charger 21, and a cooling circuit 100 for cooling them. It is mounted on a vehicle V such as a hybrid vehicle, an electric vehicle, or a fuel cell vehicle.
- the plurality of battery modules 31 to 33, the DC-DC converter 22 and a part of the cooling circuit 100 are unitized to form the battery unit 10 and are disposed below the floor panel 3 that forms the floor surface of the passenger compartment 2. Is done.
- a radiator 101 and a cooling pump 102 constituting the cooling circuit 100 are arranged in the front part of the vehicle V with the battery unit 10 interposed therebetween, and battery modules 31 to 33 are connected to the rear part of the vehicle V with electric power supplied from an external power source.
- the above-described charger 21 for charging is arranged.
- the cooling circuit 100 includes an internal cooling circuit 100 ⁇ / b> A disposed inside the battery unit 10 and an external cooling circuit 100 ⁇ / b> B disposed outside the battery unit 10.
- the battery unit 10 includes a plurality of battery modules 31 to 33, a DC-DC converter 22, a battery ECU 40, an internal cooling circuit 100A, and a case 50 for housing them. Prepare.
- the case 50 includes a bottom plate 51 on which a plurality of battery modules 31 to 33, a DC-DC converter 22, a battery ECU 40, and an internal cooling circuit 100A are mounted, and a cover 52 that covers these from above.
- a plurality of brackets 53 that run to the left and right under the plate 51 are fastened to a floor frame (not shown) arranged side by side on the side sill disposed on both sides of the vehicle V, so that the battery unit 10 is placed on the floor. It is attached so as to be suspended below the panel 3.
- the plurality of battery modules 31 to 33 include a front battery module 31 housed in the front part of the case 50 and two rear battery modules 32 and 33 housed in the rear part of the case 50.
- Each battery module Each of 31 to 33 has a plurality of high voltage batteries 31a to 33a.
- the front battery module 31 is configured by a total of six high voltage batteries 31a arranged in two in the left-right direction and three in the front-rear direction.
- the front battery module 31 is arranged in a total of two in the left-right direction and three in the front-back direction.
- the six high voltage batteries 32a constitute one rear battery module 32 (hereinafter also referred to as the lower rear battery module 32), and the other rear battery module 33 (hereinafter referred to as the upper rear part) is constituted by two high voltage batteries 33a arranged in the left-right direction. Also referred to as battery module 33).
- the plurality of battery modules 31 to 33 are disposed below the front seat 4 and the rear seat 5 of the vehicle V (see FIG. 1). Specifically, the front battery module 31 is disposed below the front seat 4, and the lower rear battery module 32 and the upper rear battery module 33 are disposed below the rear seat 5.
- the front battery module 31 When the front battery module 31 is disposed below the front seat 4, the front battery module 31 is placed flat without overlapping.
- the lower rear battery module 32 and the upper rear battery module 33 are vertically arranged in front of the seat surface of the rear seat 5 when arranged below the rear seat 5.
- the two high voltage batteries 33a constituting the upper rear battery module 33 are arranged above the two high voltage batteries 32a arranged in the foremost side. .
- the DC-DC converter 22 is a high voltage system device that transforms a direct current, and is disposed between the front battery module 31 and the rear battery modules 32 and 33 and in the center of the battery unit 10 in the width direction.
- the battery ECU 40 is a battery controller that manages charging / discharging and temperature of the high-voltage batteries 31a to 33a, and is disposed behind the upper rear battery module 33 and above the lower rear battery module 32.
- the DC-DC converter 22 and the charger 21 have higher heat resistance and higher management temperature than the high voltage batteries 31a to 33a.
- the upper limit temperature of the high voltage batteries 31a to 33a is 60 ° C.
- the upper limit temperatures of the DC-DC converter 22 and the charger 21 are set to 80 ° C.
- the high voltage batteries 31a to 33a are preferentially used in a high temperature environment. It needs to be cooled.
- the charger 21 becomes hot at the time of charging or the like, there is a case where only the DC-DC converter 22 and the charger 21 are desired to be cooled without the need to cool the high voltage batteries 31a to 33a.
- the internal cooling circuit 100A will be described below together with the external cooling circuit 100B.
- the cooling circuit 100 includes a radiator 101, a cooling pump 102, a high-voltage battery cooling unit 130, a DC-DC converter cooling unit 122, and a charger cooling unit 121 arranged outside the battery unit 10.
- a refrigerant circulation path is formed by connecting the pipe 103 and the inner pipe 104 routed inside the battery unit 10.
- the radiator 101 dissipates the heat of the refrigerant flowing in from the inflow port 101a, and discharges the refrigerant cooled by the heat dissipation from the discharge port 101b.
- the inlet 101a of the radiator 101 is connected to the discharge port 121b of the charger cooling unit 121 via the first outer pipe 103a and the second outer pipe 103b, and the first outer pipe 103a, the third outer pipe 103c, and the second outer pipe 103b. It is connected to the discharge port 122b of the DC-DC converter cooling unit 122 via the internal pipe 104a.
- the discharge port 101b of the radiator 101 is connected to the suction port 102a of the cooling pump 102 via the fourth outer pipe 103d.
- the cooling pump 102 discharges the refrigerant sucked from the suction port 102a from the discharge port 102b according to driving of an electric motor (not shown).
- the discharge port 102b of the cooling pump 102 is connected to the branching unit 108 that is an inlet of the high-pressure battery cooling unit 130 via the fifth outer pipe 103e and the sixth outer pipe 103f.
- the high-voltage battery cooling unit 130 includes a plurality of battery module cooling units 131 to 133 that cool the plurality of battery modules 31 to 33.
- the front battery module cooling unit 131 that cools the front battery module 31 has three cooling jackets 131a that cool two high voltage batteries 31a arranged on the left and right as a set, arranged in the front-rear direction, and these are arranged in the second inner pipe 104b, The third internal pipe 104c is connected in series.
- the lower rear battery module cooling unit 132 that cools the lower rear battery module 32 has three cooling jackets 132a arranged in the front-rear direction to cool two high-voltage batteries 32a arranged side by side as a set, and these are arranged in the fourth inner pipe.
- the upper rear battery module cooling unit 133 that cools the upper rear battery module 33 includes a single cooling jacket 133a that cools the two high voltage batteries 33a arranged on the left and right as a set.
- a plurality of battery module cooling units 131 to 133 are arranged in parallel.
- the inlet 131b of the front battery module cooling part 131 is connected to the branch part 108 via the sixth inner pipe 104f
- the inlet 132b of the lower rear battery module cooling part 132 is connected to the seventh inner pipe 104g and It is connected to the branch part 108 via the eighth inner pipe 104h
- the inlet 133b of the upper rear battery module cooling part 133 is connected to the branch part 108 via the ninth inner pipe 104i and the eighth inner pipe 104h.
- the discharge port 131c of the front battery module cooling unit 131 is connected to the merging unit 109 via the tenth inner pipe 104j, and the discharge port 132c of the lower rear battery module cooling unit 132 is merged via the eleventh inner pipe 104k.
- the discharge port 133c of the upper rear battery module cooling unit 133 is connected to the merging unit 109 via the twelfth inner pipe 104m.
- the branch unit 108 and the plurality of battery module cooling units 131 provided on the upstream side of the plurality of battery module cooling units 131 to 133 are arranged.
- a junction 109 provided on the downstream side of ⁇ 133 is provided in the case 50.
- the battery module cooling units 131 to 131 that cool the battery modules 31 to 33 having a small battery capacity among the plurality of battery modules 31 to 33 are arranged.
- Orifices 110 and 111 as flow rate control means are provided on the upstream side (or downstream side) of 133 and on the downstream side of the branching unit 108.
- the upstream side of the front battery module cooling unit 131 that cools the front battery module 31 ( The sixth inner pipe 104f) is provided with an orifice 110 as a flow control means.
- the flow rate is increased to the upstream side (the ninth inner pipe 104i) of the upper rear battery module cooling unit 133 that cools the upper rear battery module 33.
- An orifice 111 is provided as a control means.
- the DC-DC converter cooling unit 122 is a cooling jacket built in the DC-DC converter 22 or a cooling jacket arranged adjacent to the DC-DC converter 22, and the charger cooling unit 121 is built in the charger 21. A cooling jacket or a cooling jacket disposed adjacent to the charger 21.
- the DC-DC converter cooling unit 122 and the charger cooling unit 121 are connected in parallel to each other and disposed on the downstream side of the high-voltage battery cooling unit 130.
- the inflow port 122a of the DC-DC converter cooling unit 122 is connected to the branch unit 112 via the 13th inner pipe 104n and the seventh outer pipe 103g, and the inflow port 121a of the charger cooling unit 121 is the eighth. It is connected to the branch part 112 via the outer pipe 103h.
- the discharge port 122b of the DC-DC converter cooling unit 122 is connected to the merging unit 113 via the first inner pipe 104a and the third outer pipe 103c, and the discharge port 121b of the charger cooling unit 121 is connected to the second outer pipe 103b. Is connected to the confluence 113.
- the branch portion 112 is connected to the junction portion 109 of the high-voltage battery cooling portion 130 via the fourteenth inner pipe 104p, and the junction portion 113 is connected to the inlet 101a of the radiator 101 via the first outer pipe 103a.
- the orifice 107 is provided as a flow rate control means. Specifically, an orifice 107 is provided in the seventh outer pipe 103 g to limit the flow rate of the refrigerant flowing into the DC-DC converter cooling unit 122 and supply the remaining flow rate to the charger cooling unit 121.
- a charger generates a larger amount of heat than a DC-DC converter, so that the flow rate of the refrigerant that cools the charger 21 is set higher than the flow rate of the refrigerant that cools the DC-DC converter 22.
- the charger 21 is actively cooled.
- the cooling circuit 100 includes an upstream side of the high-voltage battery cooling unit 130, an upstream side of the high-voltage system cooling unit 120 (the DC-DC converter cooling unit 122 and the charger cooling unit 121), and a downstream side of the high-voltage battery cooling unit 130.
- a bypass channel 105 is provided to connect the two sides.
- a connecting portion between the fifth outer pipe 103e and the sixth outer pipe 103f is a branching portion 114, and the branching portion 114 is cooled through a ninth outer piping 103i that constitutes the bypass flow path 105.
- the branch part 114 is provided with an electromagnetic three-way valve 106 as a flow path switching device.
- the electromagnetic three-way valve 106 When the electromagnetic three-way valve 106 is turned OFF, the fifth outer pipe 103e and the sixth outer pipe 103f are connected, and the refrigerant discharged from the cooling pump 102 is supplied to the high-pressure battery cooling unit 130, and the fifth outer pipe 103e. And the bypass flow path 105 (the ninth outer pipe 103i) are blocked, and the refrigerant supply to the DC-DC converter cooling unit 122 and the charger cooling unit 121 is blocked.
- the electromagnetic three-way valve 106 when the electromagnetic three-way valve 106 is turned ON, the fifth outer pipe 103e and the bypass flow path 105 (the ninth outer pipe 103i) are connected, and the refrigerant discharged from the cooling pump 102 is supplied to the DC-DC converter cooling unit 122 and the charging unit.
- the fifth outer pipe 103e and the sixth outer pipe 103f are cut off, and the refrigerant supply to the high-pressure battery cooling unit 130 is cut off.
- the arrow in FIG. 4 shows the flow direction of a refrigerant
- FIG. 5 is a schematic block diagram of the cooling circuit 100 described in detail with reference to FIG.
- symbol CHG indicates a charger cooling unit 121
- symbol DCDC indicates a DC-DC converter cooling unit 122
- symbol BATT indicates a battery module cooling unit 131 to 133 (the same applies to FIGS. 6 to 9 hereinafter).
- a high-voltage system device including a radiator 101, a cooling pump 102, a high-voltage battery cooling unit 130, a charger cooling unit 121, and a DC-DC converter cooling unit 122.
- the cooling unit 120 is connected in series, and the high-voltage system cooling unit 120 is disposed on the downstream side of the high-voltage battery cooling unit 130.
- the upstream side of the high-voltage battery cooling unit 130 and the upstream side of the high-voltage system cooling unit 120 and the downstream side of the high-voltage battery cooling unit 130 are connected by the bypass channel 105, and the bypass channel 105 and the high-voltage battery cooling unit 130 are connected.
- An electromagnetic three-way valve 106 is provided at a branching portion 114 with the upstream flow path.
- the high-voltage battery cooling unit 130 includes three battery module cooling units 131 to 133 arranged in parallel.
- the high-voltage system device cooling unit 120 includes a DC-DC converter cooling unit 122 and a charger arranged in parallel.
- the cooling unit 121 is configured.
- the refrigerant supplied to the high-voltage battery cooling unit 130 is first distributed to the front battery module cooling unit 131 and the rear battery module cooling units 132 and 133 at the branching unit 108. At this time, the refrigerant flow rate toward the front battery module cooling unit 131 is limited by the orifice 110, and more refrigerant than the front battery module cooling unit 131 is supplied to the rear battery module cooling units 132 and 133. The refrigerant supplied to the rear battery module cooling units 132 and 133 is further distributed to the lower rear battery module cooling unit 132 and the upper rear battery module cooling unit 133. At this time, the refrigerant flow rate toward the upper rear battery module cooling unit 133 is limited by the orifice 111, and more refrigerant than the upper rear battery module cooling unit 133 is supplied to the lower rear battery module cooling unit 132.
- the refrigerant discharged from the cooling pump 102 does not flow to the high-pressure battery cooling unit 130, and the entire amount is supplied to the bypass flow path 105.
- the refrigerant supplied to the bypass channel 105 bypasses the high-pressure battery cooling unit 130 and is distributed to the DC-DC converter cooling unit 122 and the charger cooling unit 121 via the branch unit 112.
- the refrigerant flow rate toward the DC-DC converter cooling unit 122 is limited by the orifice 107, and more refrigerant than the DC-DC converter cooling unit 122 is supplied to the charger cooling unit 121.
- the refrigerant that has passed through the DC-DC converter cooling unit 122 and the charger cooling unit 121 merges at the junction unit 113 and then returns to the radiator 101 where it is cooled.
- the high-voltage battery cooling unit 130 is disposed on the upstream side of the high-voltage system cooling unit 120 in the cooling circuit 100. Therefore, the high-voltage batteries 31a to 33a and Even in a situation where both of the high-voltage devices are cooled, the high-voltage batteries 31a to 33a having a low management temperature (inferior in heat resistance) can be reliably cooled without being affected by the temperature of the high-voltage devices.
- the plurality of battery module cooling units 131 to 133 constituting the high-voltage battery cooling unit 130 are connected in parallel, a temperature difference between the battery module positioned on the upstream side and the battery module positioned on the downstream side can be suppressed. Furthermore, since an increase in pressure loss can be suppressed, the cooling pump can be reduced in size and weight.
- the high voltage system device includes a DC-DC converter 22 and a charger 21, and the high voltage system device cooling unit 120 includes a DC-DC converter cooling unit 122 that cools the DC-DC converter 22, and the charger 21.
- a cooling unit 121 for cooling, and the DC-DC converter cooling unit 122 and the charger cooling unit 121 are arranged in parallel in the cooling circuit 100. Therefore, the DC-DC converter cooling unit 122 and the charger cooling unit The pressure loss can be reduced as compared with the case where 121 is arranged in series. Further, even if the required refrigerant flow rates of the DC-DC converter cooling unit 122 and the charger cooling unit 121 are different, the required refrigerant flow rate is supplied to the DC-DC converter cooling unit 122 and the charger cooling unit 121 without waste. Therefore, the discharge capacity of the cooling pump 102 can be suppressed.
- the orifice 107 is provided on the upstream side or downstream side of the DC-DC converter cooling unit 122, the flow rate of refrigerant supplied to the DC-DC converter cooling unit 122 can be adjusted with high accuracy, and the remaining refrigerant flow rate is set to the required refrigerant flow rate. The entire amount is supplied to the charger cooling unit 121 having a large flow rate, and the charger 21 can be reliably cooled.
- the cooling circuit 100 includes a bypass flow path 105 that bypasses the high-pressure battery cooling unit 130 and an electromagnetic three-way valve 106 that is an electromagnetic valve as a flow path switching device that switches the flow path.
- the refrigerant supply to the battery cooling unit 130 can be selectively cut off.
- the temperature of the high voltage batteries 31a to 33a can be appropriately managed based on the flow path switching control according to the request of the high voltage batteries 31a to 33a.
- the electromagnetic three-way valve 106 is provided at a branching portion 114 between the bypass flow passage 105 and the flow passage on the upstream side of the high-pressure battery cooling portion 130, the total amount of refrigerant is based on the switching control of the electromagnetic three-way valve 106. Can be selected between a state in which the high voltage battery cooling unit 130 and the high voltage system device cooling unit 120 (the DC-DC converter cooling unit 122 and the charger cooling unit 121) are supplied and a state in which only the high voltage system device cooling unit 120 is supplied. .
- the high-voltage battery cooling unit 130 is configured from the three battery module cooling units 131 to 133 corresponding to the three battery modules 31 to 33. Two or more need only be connected in parallel.
- the DC-DC converter 22 and the charger 21 are exemplified as the high-voltage equipment. However, any one of them may be used, and other high-voltage equipment such as an inverter may be used. Good.
- the DC-DC converter cooling unit 122 and the charger cooling unit 121 are provided on the downstream side of the high-voltage battery cooling unit 130, they may be connected in series.
- the cooling circuit 100 of the above embodiment may be a water-cooled cooling circuit using water as a refrigerant, or an oil-cooled cooling circuit using oil as a refrigerant.
- Vehicle power supply 21
- Charger (high-voltage equipment) 22
- DC-DC converter (high voltage equipment) 31a-33a High voltage battery (battery) 31 to 33
- Battery module 100
- Cooling circuit 101
- Radiator 102
- Cooling pump 103f
- Sixth external pipe flow path upstream of high-pressure battery cooling section
- Bypass flow path 106
- Electromagnetic three-way valve flow path switching device
- Orifice flow rate control means
- Branching section 109 Junction section 120
- High-voltage system equipment cooling section 121
- Charger cooling section 122
- DC-DC converter cooling section 130
- High-voltage battery cooling sections 131 to 133 Battery module cooling section
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Abstract
Description
第1態様は、
それぞれ複数のバッテリ(例えば、後述の実施形態の高圧バッテリ31a~33a)を有する、複数のバッテリモジュール(例えば、後述の実施形態のバッテリモジュール31~33)と、
高圧系機器(例えば、後述の実施形態のDC-DCコンバータ22、充電器21)と、
複数の前記バッテリモジュールを冷却する複数のバッテリモジュール冷却部(例えば、後述の実施形態のバッテリモジュール冷却部131~133)と、前記高圧系機器を冷却する高圧系機器冷却部(例えば、後述の実施形態の高圧系機器冷却部120)と、を有する冷却回路(例えば、後述の実施形態の冷却回路100)と、を備えた車両用電源装置(例えば、後述の実施形態の車両用電源装置1)であって、
前記冷却回路において、
複数の前記バッテリモジュール冷却部は、並列に接続され、
複数の前記バッテリモジュール冷却部の上流側には、分岐部(例えば、後述の実施形態の分岐部108)が設けられ、
複数の前記バッテリモジュール冷却部の下流側には、合流部(例えば、後述の実施形態の合流部109)が設けられ、
該合流部の下流側に、前記高圧系機器冷却部が設けられる。
第1態様の車両用電源装置であって、
前記高圧系機器は、DC-DCコンバータ(例えば、後述の実施形態のDC-DCコンバータ22)と、充電器(例えば、後述の実施形態の充電器21)と、を有し、
前記高圧系機器冷却部は、前記DC-DCコンバータを冷却するDC-DCコンバータ冷却部(例えば、後述の実施形態のDC-DCコンバータ冷却部122)と、前記充電器を冷却する充電器冷却部(例えば、後述の実施形態の充電器冷却部121)と、を有し、
該DC-DCコンバータ冷却部と該充電器冷却部とは、前記合流部の下流側に並列に配置される。
第2態様の車両用電源装置であって、
前記冷却回路は、前記DC-DCコンバータ冷却部の上流側又は下流側に、流量制御手段(例えば、後述の実施形態のオリフィス107)を有する。
第1~第3態様の車両用電源装置であって、
前記冷却回路は、
複数の前記バッテリモジュール冷却部の上流側と、前記高圧系機器冷却部の上流側且つ複数の前記バッテリモジュール冷却部の下流側と、を接続するバイパス流路(例えば、後述の実施形態のバイパス流路105)と、
複数の前記バッテリモジュール冷却部の上流側に設けられた流路切替装置(例えば、後述の実施形態の電磁式三方弁106)と、を有する。
第4態様の車両用電源装置であって、
前記流路切替装置は、電磁弁(例えば、後述の実施形態の電磁式三方弁106)である。
第4又は第5態様の車両用電源装置であって、
前記流路切替装置は、前記バイパス流路と複数の前記バッテリモジュール冷却部の上流側の流路との分岐部に設けられた電磁式三方弁(例えば、後述の実施形態の電磁式三方弁106)である。
ラジエータ(例えば、後述の実施形態のラジエータ101)と、
冷却ポンプ(例えば、後述の実施形態の冷却ポンプ102)と、
複数のバッテリモジュールを冷却する複数のバッテリモジュール冷却部(例えば、後述の実施形態のバッテリモジュール冷却部131~133)と、
高圧系機器を冷却する高圧系機器冷却部(例えば、後述の実施形態の高圧系機器冷却部120)と、を有する冷却回路(例えば、後述の実施形態の冷却回路100)であって、
複数の前記バッテリモジュール冷却部は、並列に接続され、
複数の前記バッテリモジュール冷却部の上流側には、分岐部(例えば、後述の実施形態の分岐部108)が設けられ、
複数の前記バッテリモジュール冷却部の下流側には、合流部(例えば、後述の実施形態の合流部109)が設けられ、
該合流部の下流側に、前記高圧系機器冷却部が設けられる。
第7態様の冷却回路であって、
前記高圧系機器冷却部は、DC-DCコンバータ(例えば、後述の実施形態のDC-DCコンバータ22)を冷却するDC-DCコンバータ冷却部(例えば、後述の実施形態のDC-DCコンバータ冷却部122)と、充電器(例えば、後述の実施形態の充電器21)を冷却する充電器冷却部(例えば、後述の実施形態の充電器冷却部121)と、を有し、
該DC-DCコンバータ冷却部と該充電器冷却部とは、前記合流部の下流側に並列に配置される。
第8態様の冷却回路であって、
前記DC-DCコンバータ冷却部の上流側又は下流側に、流量制御手段(例えば、後述の実施形態のオリフィス107)を有する。
第7~第9態様の冷却回路であって、
複数の前記バッテリモジュール冷却部の上流側と、前記高圧系機器冷却部の上流側且つ複数の前記バッテリモジュール冷却部の下流側と、を接続するバイパス流路(例えば、後述の実施形態のバイパス流路105)と、
複数の前記バッテリモジュール冷却部の上流側に設けられた流路切替装置(例えば、後述の実施形態の電磁式三方弁106)と、を有する。
第10態様の冷却回路であって、
前記流路切替装置は、電磁弁(例えば、後述の実施形態の電磁式三方弁106)である、冷却回路。
第10又は第11態様の冷却回路であって、
前記流路切替装置は、前記バイパス流路と複数の前記バッテリモジュール冷却部の上流側の流路との分岐部に設けられた電磁式三方弁(例えば、後述の実施形態の電磁式三方弁106)である。
図1に示すように、本発明の実施形態に係る車両用電源装置1は、主として複数のバッテリモジュール31~33、DC-DCコンバータ22、充電器21、及びこれらを冷却する冷却回路100を備え、ハイブリッド車両、電気車両、燃料電池車等の車両Vに搭載される。これら複数のバッテリモジュール31~33、DC-DCコンバータ22及び冷却回路100の一部は、ユニット化されてバッテリユニット10を構成し、車室2の床面を形成するフロアパネル3の下方に配置される。バッテリユニット10を挟んで、車両Vの前部には冷却回路100を構成するラジエータ101及び冷却ポンプ102が配置され、車両Vの後部には外部電源から供給される電力でバッテリモジュール31~33を充電する上記した充電器21が配置される。冷却回路100は、バッテリユニット10内に配置される内部冷却回路100Aと、バッテリユニット10外に配置される外部冷却回路100Bと、を有している。
図2及び図3に示すように、バッテリユニット10は、複数のバッテリモジュール31~33と、DC-DCコンバータ22と、バッテリ用ECU40と、内部冷却回路100Aと、これらを収容するケース50とを備える。
図4に示すように、冷却回路100は、ラジエータ101、冷却ポンプ102、高圧バッテリ冷却部130、DC-DCコンバータ冷却部122及び充電器冷却部121がバッテリユニット10の外側に配索される外配管103とバッテリユニット10の内側に配索される内配管104とで接続され冷媒循環経路が形成されている。
図5に示すように、本実施形態の冷却回路100では、ラジエータ101と、冷却ポンプ102と、高圧バッテリ冷却部130と、充電器冷却部121及びDC-DCコンバータ冷却部122からなる高圧系機器冷却部120と、が直列に接続され、高圧バッテリ冷却部130の下流側に高圧系機器冷却部120が配置される。また、高圧バッテリ冷却部130の上流側と、高圧系機器冷却部120の上流側且つ高圧バッテリ冷却部130の下流側とがバイパス流路105で接続され、バイパス流路105と高圧バッテリ冷却部130の上流側の流路との分岐部114に電磁式三方弁106が設けられている。さらに、高圧バッテリ冷却部130は、並列に配置された3つのバッテリモジュール冷却部131~133から構成され、高圧系機器冷却部120は、並列に配置されたDC-DCコンバータ冷却部122と充電器冷却部121とから構成されている。
つぎに、冷却回路100の動作について、図6及び図7を参照して説明する。図6及び図7において、冷媒の流れている流路を実線で示し、冷媒が流れていない流路を点線で示している。
<電磁式三方弁[OFF]>
このように構成された冷却回路100において、冷却ポンプ102が駆動すると、冷却ポンプ102がラジエータ101側から低温の冷媒を吸入し、これを高圧バッテリ冷却部130側に向けて吐出する。通常状態では、電磁式三方弁106がOFFであるため、図6に示すように、冷却ポンプ102が吐出した冷媒は、バイパス流路105には流れず、全量が高圧バッテリ冷却部130に供給される。
冷却回路100において、高圧バッテリ31a~33aの冷却が必要ない場合、若しくは、高圧バッテリ31a~33aの要求温度に対し冷媒温度が適切ではないがDC-DCコンバータ22及び充電器21の冷却が必要な場合には、電磁式三方弁106をON制御することにより、図7に示すように、高圧バッテリ冷却部130への冷媒供給を遮断し、DC-DCコンバータ22及び充電器21のみを冷却することができる。すなわち、電磁式三方弁106をONにすると、冷却ポンプ102から吐出される冷媒が高圧バッテリ冷却部130に流れず、全量がバイパス流路105に供給される。バイパス流路105に供給された冷媒は、高圧バッテリ冷却部130を迂回し、分岐部112を介してDC-DCコンバータ冷却部122と充電器冷却部121とに分配される。このとき、DC-DCコンバータ冷却部122側への冷媒流量はオリフィス107で制限され、DC-DCコンバータ冷却部122よりも多くの冷媒が充電器冷却部121へ供給される。そして、DC-DCコンバータ冷却部122及び充電器冷却部121を通過した冷媒は、合流部113で合流した後、ラジエータ101に戻り、ここで冷却される。
例えば、上記実施形態では、高圧バッテリ冷却部130を3つのバッテリモジュール31~33に対応させて3つのバッテリモジュール冷却部131~133から構成したが、これに限らず、バッテリモジュール冷却部は、2つ以上が並列に接続されていればよい。
また、上記実施形態では、高圧系機器として、DC-DCコンバータ22及び充電器21を例示したが、いずれか1つでもよく、インバータ等の他の高圧系機器でもよく、これらを複数含むものでもよい。
また、DC-DCコンバータ冷却部122と充電器冷却部121とは、高圧バッテリ冷却部130の下流側に設けられている限り、これらが直列に接続されていてもよい。
さらに、上記実施形態の冷却回路100は、冷媒として水を用いた水冷式の冷却回路でもよく、冷媒として油を用いた油冷式の冷却回路でもよい。
21 充電器(高圧系機器)
22 DC-DCコンバータ(高圧系機器)
31a~33a 高圧バッテリ(バッテリ)
31~33 バッテリモジュール
100 冷却回路
101 ラジエータ
102 冷却ポンプ
103f 第6外配管(高圧バッテリ冷却部の上流側の流路)
105 バイパス流路
106 電磁式三方弁(流路切替装置)
107 オリフィス(流量制御手段)
108 分岐部
109 合流部
120 高圧系機器冷却部
121 充電器冷却部
122 DC-DCコンバータ冷却部
130 高圧バッテリ冷却部
131~133 バッテリモジュール冷却部
Claims (12)
- それぞれ複数のバッテリを有する、複数のバッテリモジュールと、
高圧系機器と、
複数の前記バッテリモジュールを冷却する複数のバッテリモジュール冷却部と、前記高圧系機器を冷却する高圧系機器冷却部と、を有する冷却回路と、を備えた車両用電源装置であって、
前記冷却回路において、
複数の前記バッテリモジュール冷却部は、並列に接続され、
複数の前記バッテリモジュール冷却部の上流側には、分岐部が設けられ、
複数の前記バッテリモジュール冷却部の下流側には、合流部が設けられ、
該合流部の下流側に、前記高圧系機器冷却部が設けられた、車両用電源装置。 - 請求項1に記載の車両用電源装置であって、
前記高圧系機器は、DC-DCコンバータと、充電器と、を有し、
前記高圧系機器冷却部は、前記DC-DCコンバータを冷却するDC-DCコンバータ冷却部と、前記充電器を冷却する充電器冷却部と、を有し、
該DC-DCコンバータ冷却部と該充電器冷却部とは、前記合流部の下流側に並列に配置された、車両用電源装置。 - 請求項2に記載の車両用電源装置であって、
前記冷却回路は、前記DC-DCコンバータ冷却部の上流側又は下流側に、流量制御手段を有する、車両用電源装置。 - 請求項1~3のいずれか1項に記載の車両用電源装置であって、
前記冷却回路は、
複数の前記バッテリモジュール冷却部の上流側と、前記高圧系機器冷却部の上流側且つ複数の前記バッテリモジュール冷却部の下流側と、を接続するバイパス流路と、
複数の前記バッテリモジュール冷却部の上流側に設けられた流路切替装置と、を有する、車両用電源装置。 - 請求項4に記載の車両用電源装置であって、
前記流路切替装置は、電磁弁である、車両用電源装置。 - 請求項4又は5に記載の車両用電源装置であって、
前記流路切替装置は、前記バイパス流路と複数の前記バッテリモジュール冷却部の上流側の流路との分岐部に設けられた電磁式三方弁である、車両用電源装置。 - ラジエータと、
冷却ポンプと、
複数のバッテリモジュールを冷却する複数のバッテリモジュール冷却部と、
高圧系機器を冷却する高圧系機器冷却部と、を有する冷却回路であって、
複数の前記バッテリモジュール冷却部は、並列に接続され、
複数の前記バッテリモジュール冷却部の上流側には、分岐部が設けられ、
複数の前記バッテリモジュール冷却部の下流側には、合流部が設けられ、
該合流部の下流側に、前記高圧系機器冷却部が設けられた、冷却回路。 - 請求項7に記載の冷却回路であって、
前記高圧系機器冷却部は、DC-DCコンバータを冷却するDC-DCコンバータ冷却部と、充電器を冷却する充電器冷却部と、を有し、
該DC-DCコンバータ冷却部と該充電器冷却部とは、前記合流部の下流側に並列に配置された、冷却回路。 - 請求項8に記載の冷却回路であって、
前記DC-DCコンバータ冷却部の上流側又は下流側に、流量制御手段を有する、冷却回路。 - 請求項7~9のいずれか1項に記載の冷却回路であって、
複数の前記バッテリモジュール冷却部の上流側と、前記高圧系機器冷却部の上流側且つ複数の前記バッテリモジュール冷却部の下流側と、を接続するバイパス流路と、
複数の前記バッテリモジュール冷却部の上流側に設けられた流路切替装置と、を有する、冷却回路。 - 請求項10に記載の冷却回路であって、
前記流路切替装置は、電磁弁である、冷却回路。 - 請求項10又は11に記載の冷却回路であって、
前記流路切替装置は、前記バイパス流路と複数の前記バッテリモジュール冷却部の上流側の流路との分岐部に設けられた電磁式三方弁である、冷却回路。
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