WO2014069270A1 - バッテリ温調装置 - Google Patents
バッテリ温調装置 Download PDFInfo
- Publication number
- WO2014069270A1 WO2014069270A1 PCT/JP2013/078455 JP2013078455W WO2014069270A1 WO 2014069270 A1 WO2014069270 A1 WO 2014069270A1 JP 2013078455 W JP2013078455 W JP 2013078455W WO 2014069270 A1 WO2014069270 A1 WO 2014069270A1
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- WIPO (PCT)
- Prior art keywords
- battery
- temperature control
- vehicle
- evaporator
- air
- Prior art date
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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
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
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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
- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
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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
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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
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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
- 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
- B60L50/66—Arrangements of batteries
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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
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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
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
- H01M10/6565—Gases with forced flow, e.g. by blowers with recirculation or U-turn in the flow path, i.e. back and forth
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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
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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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
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/003—Component temperature regulation using an air flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60K2001/008—Arrangement or mounting of electrical propulsion units with means for heating the electrical propulsion units
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/34—Cabin temperature
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- H—ELECTRICITY
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- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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- 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 battery temperature control device that adjusts the temperature of a battery module housed in a battery pack case.
- the conventional vehicle battery cooling system has a structure with a drainage drain, foreign matter such as water, dust and mud enters from the drainage drain, and when the battery electrode is reached, an electrode short circuit occurs. There was a problem of fear. Moreover, in order to avoid such a problem, when the drainage drain is not provided, there is a problem that the condensed water generated in the evaporator reaches the electrode of the battery module.
- the present invention has been made paying attention to the above problem, and an object of the present invention is to provide a battery temperature control device that prevents the condensed water generated in the evaporator of the temperature control unit from reaching the electrodes of the battery module. To do.
- a battery temperature control device of the present invention includes a battery module, a temperature control unit that adjusts the temperature of the battery module, and a battery pack case that houses the battery module and the temperature control unit.
- the temperature control unit includes, from the upstream side in the wind flow direction, an evaporator that performs heat exchange using a refrigerant of a vehicle interior air conditioner, a blower that circulates the pack case air, a fin member, and a duct that sends air to the battery module And having.
- the blower and the fin member are arranged at the downstream position of the evaporator, so the fine condensed water sent from the evaporator adheres to the blower and the fin member and evaporates. To block.
- the distance from an evaporator to a battery electrode is ensured by providing an air blower, a fin member, and a duct in the downstream position of an evaporator, it becomes difficult for condensed water to reach the electrode of a battery. That is, the condensed water electrode adhesion delay action is added to the condensed water blocking action, so that the condensed water does not reach the battery module disposed at the downstream position of the fin member. As a result, it is possible to prevent the condensed water generated in the evaporator of the temperature control unit from reaching the electrode of the battery module.
- FIG. 1 It is a schematic side view which shows the electric vehicle carrying the battery pack BP which employ
- FIG. It is a schematic bottom view which shows the electric vehicle carrying the battery pack BP which employ
- FIG. It is a whole perspective view which shows battery pack BP which employ
- FIG. It is the perspective view which removed the battery pack case upper cover which shows battery pack BP which employ
- FIG. 6 shows the flow of the temperature control structure and temperature control wind around a temperature control unit.
- FIG. 6 shows an example of the PTC heater of the temperature control unit mounted in the battery pack BP which employ
- FIG. It is a perspective view which shows the temperature control unit and air distribution duct which were mounted in the battery pack BP which employ
- Example 1 shown in the drawings.
- the configuration of the battery temperature control apparatus of the first embodiment is described as “in-vehicle configuration of battery pack BP”, “overall detailed configuration of battery pack BP”, “region division configuration of internal space of pack case”, “detailed configuration of battery temperature control device” It is divided and explained.
- FIGS. 1 and 2 show an electric vehicle equipped with a battery pack BP that employs the battery temperature control device of the first embodiment.
- the in-vehicle configuration of the battery pack BP will be described with reference to FIGS. 1 and 2.
- the battery pack BP is disposed at the center of the wheel base below the floor panel 100.
- the floor panel 100 is provided from the connection position of the motor room 101 and the dash panel 104 that defines the vehicle compartment 102 to the rear end position of the vehicle, and has a flat shape that suppresses unevenness of the floor surface from the front of the vehicle to the rear of the vehicle.
- the vehicle compartment 102 includes an instrument panel 105, a center console box 106, an air conditioner unit 107, and an occupant seat 108.
- An air conditioner compressor 103 that compresses the refrigerant used in the air conditioner unit 107 is disposed in the motor room 101 in front of the vehicle.
- the battery pack BP is supported at eight points on a vehicle body member that is a vehicle body strength member.
- the vehicle body member includes a pair of side members 109, 109 extending in the vehicle front-rear direction and a plurality of cross members 110, 110,... Connecting the pair of side members 109, 109 in the vehicle width direction.
- Both sides of the battery pack BP are supported at six points by a pair of first side member support points S1, S1, a pair of first cross member support points C1, C1, and a pair of second side member support points S2, S2.
- the rear side of the battery pack BP is supported at two points by a pair of second cross member support points C2 and C2.
- the battery pack BP includes a high voltage module 112 (DC / DC converter +) disposed in the motor room 101 via a charge / discharge harness 111 wired in the vehicle front-rear direction along the dash panel 104. Connected to the charger.
- the motor room 101 includes an inverter 113 and a motor drive unit 114 (traveling motor + reduction gear + differential gear).
- a charging port 115 rapid charging / normal charging having a charging port lid is provided at the front surface of the vehicle, and the charging port 115 is connected to the high voltage module 112 by a charging harness 117.
- the battery pack BP is connected to an external electronic control system via a bidirectional communication line such as a CAN cable (not shown), and includes an air conditioner unit 107 disposed in the instrument panel 105. Connected. That is, battery discharge control (power running control), battery charge control (rapid charge control, normal charge control, regenerative control), etc. are performed, and the internal temperature (battery temperature) of the battery pack BP is controlled by cold air and hot air. Controlled by wind.
- FIG.3 and FIG.4 show details of the battery pack BP that employs the battery temperature control device of the first embodiment. Hereinafter, based on FIG.3 and FIG.4, the whole detailed structure of battery pack BP is demonstrated.
- the battery pack BP of the first embodiment includes a battery pack case 1, a battery stack 2, a temperature control unit 3, and a service disconnect switch 4 (high-power cutoff switch: And a junction box 5 and a lithium ion battery controller 6 (hereinafter referred to as “LB controller”).
- LB controller lithium ion battery controller
- the battery pack case 1 is composed of two parts, a battery pack lower frame 11 and a battery pack upper cover 12, as shown in FIGS. Then, an annular seal member that is continuous along the outer peripheral edges of the battery pack lower frame 11 and the battery pack upper cover 12 is interposed, and two parts are fixed by bolt fastening, thereby preventing water entry from the outside. It is structured.
- the battery pack lower frame 11 is a frame member that is supported and fixed to the vehicle body member as shown in FIG.
- the battery pack lower frame 11 has a rectangular recess space in which the battery stack 2 and other pack components 3, 4, 5, and 6 are mounted.
- a refrigerant tube connector terminal 13, a charge / discharge connector terminal 14, a high-power connector terminal 15 (for vehicle interior air conditioning), and a low-power connector terminal 16 are attached to the frame front end edge of the battery pack lower frame 11.
- the battery pack upper cover 12 is a cover member that covers the battery pack lower frame 11 in a watertight state.
- the battery pack upper cover 12 has an uneven step surface shape corresponding to the uneven height shape of the battery stack 2 among the pack components 2, 3, 4, 5, 6 mounted on the battery pack lower frame 11. With a cover surface.
- the detailed configuration of each battery stack 21, 22, 23 is as follows.
- the first battery stack 21 is mounted in the vehicle rear region of the battery pack lower frame 11 as shown in FIG.
- the first battery stack 21 is prepared by stacking a plurality of battery modules in the thickness direction with a rectangular parallelepiped battery module having a small thickness as a structural unit. And it is comprised by the vertical stacking (for example, 20 vertical stacking) mounted so that the stacking direction of a battery module and a vehicle width direction may correspond.
- each of the second battery stack 22 and the third battery stack 23 has a left and right side in the vehicle width direction in the vehicle central region in front of the first battery stack 21 in the battery pack lower frame 11. A pair is mounted separately.
- the second battery stack 22 and the third battery stack 23 have a flat stacked structure with exactly the same pattern. That is, a rectangular parallelepiped battery module having a small thickness is used as a structural unit, and a plurality of (for example, four and five) battery modules stacked in the thickness direction are stacked (for example, one set of four stacks, five Prepare two sets).
- the second battery stack 22 includes front battery stack portions 22a and 22b, and a rear battery stack portion 22c that is one height lower than the front battery stack portions 22a and 22b.
- the third battery stack 23 includes front battery stack portions 23a and 23b, and a rear battery stack portion 23c whose height is one sheet lower than the front battery stack portions 23a and 23b. .
- the temperature control unit 3 is disposed in the right region of the vehicle front space in the battery pack lower frame 11, and temperature control air (cold air, hot air) is provided in an air distribution duct 9 described later of the battery pack BP. ).
- the SD switch 4 is a switch that is disposed in the central region of the vehicle front space in the battery pack lower frame 11 and mechanically shuts off the battery high-power circuit by manual operation.
- the battery high-power circuit is formed by connecting the battery stacks 21, 22, 23 having the internal bus bar, the junction box 5, and the SD switch 4 to each other via the bus bar.
- the SD switch 4 can be switched on and off by manual operation when the high-power module 112, the inverter 113, etc. are inspected, repaired, or replaced.
- the junction box 5 is arranged in the left side region of the vehicle front space in the battery pack lower frame 11, and intensively supplies / cuts off / distributes high power by a relay circuit.
- the junction box 5 is provided with a temperature adjustment relay 51 and a temperature adjustment controller 52 for controlling the temperature adjustment unit 3.
- the junction box 5 and the external high voltage module 112 are connected via the charge / discharge connector terminal 14 and the charge / discharge harness 111.
- the junction box 5 and an external electronic control system are connected via a weak electrical harness.
- the LB controller 6 is arranged at the left end face position of the first battery stack 21, and performs capacity management, temperature management, and voltage management of each battery stack 21, 22, and 23.
- This LB controller 6 performs battery capacity information and battery temperature by arithmetic processing based on the temperature detection signal from the temperature detection signal line, the battery voltage detection value from the battery voltage detection line, and the battery current detection signal from the battery current detection signal line. Get information and battery voltage information.
- the LB controller 6 and an external electronic control system are connected via a light electrical harness that transmits relay circuit on / off information, battery capacity information, battery temperature information, and the like.
- FIG. 5 shows a region division configuration of the case internal space of the battery pack BP that employs the battery temperature control device of the first embodiment.
- the region division configuration of the pack case internal space will be described with reference to FIG.
- the battery pack BP has a battery module mounting area 7 on the vehicle rear side and a vehicle front side with the boundary line L drawn in the vehicle width direction as the internal space of the battery pack case 1. It is divided into two vehicle front-rear direction regions of the electrical component mounting region 8 on the side.
- the battery module mounting area 7 occupies most of the internal space of the case from the vehicle rear end to the boundary line L closer to the vehicle front.
- the electrical component mounting area 8 occupies an area narrower than the battery module mounting area 7 from the vehicle front end to the boundary line L closer to the vehicle front.
- the battery module mounting area 7 is divided into three divided rectangular areas of a first divided rectangular area 71, a second divided rectangular area 72, and a third divided rectangular area 73 by a T-shaped passage (a central passage 36 and a transverse passage 37).
- the first divided rectangular area 71 the first battery stack 21 having the LB controller 6 on one side surface is mounted.
- the second battery stack 22 is mounted in the second divided rectangular area 72.
- the third battery stack 23 is mounted in the third divided rectangular area 73.
- the electrical component mounting area 8 is divided into three divided areas, a first divided area 81, a second divided area 82, and a third divided area 83, which are divided in the vehicle width direction.
- the temperature control unit 3 is mounted from the first section area 81 to the lower part of the second section area 82.
- the SD switch 4 is mounted on the upper part of the second section area 82.
- the junction box 5 is mounted in the third section area 83.
- a temperature distribution duct 9 (see FIGS. 6 and 9) connected to the temperature control unit 3 is secured and a temperature for ensuring the internal circulation of the temperature control wind is ensured.
- a conditioned passage is formed.
- This temperature-controlled air passage uses a gap when each battery stack 21, 22, 23 is mounted in a divided rectangular area.
- the central passage 36 is formed by providing a gap between the opposing surfaces of the second battery stack 22 and the third battery stack 23.
- the transverse passage 37 is formed by providing a gap between the opposing surfaces of the first battery stack 21 and the second and third battery stacks 22 and 23.
- the annular passage 38 is formed by providing a clearance margin between the battery pack lower frame 11 and each pack component 2, 3, 4, 5, 6.
- the temperature control air passage includes gaps and intervals formed by mounting the pack components 2, 3, 4, 5, 6 in the case internal space. And space.
- FIGS. 6 to 9 show details of the battery temperature control apparatus of the first embodiment mounted on the battery pack BP. Hereinafter, a detailed configuration of the battery temperature control device will be described with reference to FIGS.
- the battery temperature control device includes a first battery stack 21, a second battery stack 22, a third battery stack 23, a temperature control unit 3, and an air distribution duct 9.
- the first battery stack 21 is housed and disposed in a vehicle rear region of the internal space of the battery pack case 1.
- the second and third battery stacks 22 and 23 are housed and disposed in a vehicle front region of the internal space of the battery pack case 1 relative to the first battery stack 21 and the height of the stack is the first battery stack. It is set lower than 21.
- the temperature control unit 3 includes an evaporator 32, a blower fan 33 (blower), a PTC heater 34 (fin member), from the upstream side in the wind flow direction inside the unit case 31. It is comprised.
- This temperature control unit 3 is disposed at a position near the air conditioner compressor 103 disposed in the motor room 101 in the front of the vehicle in the internal space of the battery pack case 1 disposed at a substantially lower floor position in the front-rear direction of the vehicle. Is done.
- the unit case 31 is disposed in the first section area 81 at the corner of the electrical component mounting area 8, and the unit duct 35 is connected to the discharge port.
- the unit duct 35 is L-shaped that bends from the vehicle width direction to the vehicle front-rear direction, and has an air distribution port 35 a to which the air distribution duct 9 is connected at an end position facing the central passage 36.
- the evaporator 32 performs heat exchange using the refrigerant of the air conditioner unit 107 (vehicle interior air conditioner), and draws heat from the passing air to create cold air.
- the refrigerant from the air conditioner unit 107 is introduced into the evaporator 32 through the refrigerant pipe connector terminal 13 attached to the front edge of the frame.
- the evaporator 32 is disposed at a position ahead of the blower fan 33, and has one core surface 32 a so as to be substantially parallel to and face the frame inner surface 11 a (pack case inner surface) in front of the vehicle. Is arranged.
- the PTC heater 34 uses a ceramic element (PTC element) called a PTC thermistor (Positive Temperature Coefficient Thermistor), generates heat when a current is passed through the PTC element, and generates hot air by applying heat to the passing air.
- PTC element a ceramic element
- Thermistor Positive Temperature Coefficient Thermistor
- the PTC heater 34 is a fin type PTC heater provided with a heat radiation fin for increasing the heat generation amount of the PTC element. For example, as shown in FIG. 8, a heater frame 34a, a PTC element 34b, and a mesh fin 34c.
- the air distribution duct 9 has one end connected to the air distribution port 35a of the unit duct 35, and through an equal width duct portion 92 and an enlarged duct portion 93 disposed in the T-shaped gap space region.
- a blowout opening 91 is formed at the other end to blow out the temperature-controlled air toward the rear of the vehicle.
- the blowing opening 91 extends in the vehicle width direction along the stack front upper area 21a (see FIG. 4) of the first battery stack 21 protruding above the vehicle from the upper surfaces of the second and third battery stacks 22 and 23. Are arranged opposite each other.
- the equal-width duct portion 92 is connected to the air distribution port 35a of the unit duct 35, and has a vertically long cross-sectional shape with a constant dimension in the vehicle width direction, as shown in FIG.
- the space of the central passage 36 in the T-shaped gap space area having a shape similar to the duct cross-sectional shape is used for the arrangement of the equal width duct portion 92.
- the said widening duct part 93 is connected to the equal width duct part 92, and as shown in FIG. 9, gradually reduces the vehicle vertical direction dimension as the vehicle width direction dimension gradually increases toward the blowing opening 91. Is formed.
- the widening duct portion 93 is disposed at the central passage 36 in the T-shaped gap space region and at the upper portion of the rear battery stack portions 22c and 23c that is one height lower than the front battery stack portions 22a and 22b. And the upper space of the transverse passage 37 in the T-shaped gap space area are used.
- Battery temperature adjustment of battery pack BP The battery has a high temperature dependency, and even if the battery temperature is too high or the battery temperature is too low, the battery performance deteriorates. Therefore, in order to maintain high battery performance at the time of low outside air temperature or high outside air temperature, it is preferable to adjust the battery temperature to the optimum temperature range.
- action of the battery pack BP which reflects this is demonstrated.
- the temperature control operation of the battery pack BP performed by the LB controller 6 will be described.
- the refrigerant is introduced into the evaporator 32 of the temperature control unit 3 and the blower fan 33 is installed. turn.
- heat is taken away from the wind passing through the evaporator 32 to generate cold wind.
- the PTC heater 34 of the temperature control unit 3 is energized and the blower fan 33 is turned on. .
- heat is applied to the wind passing through the PTC heater 34 to create warm air.
- the internal temperature of the battery pack BP can be maintained at a temperature within the range of the first set temperature to the second set temperature at which high battery performance can be obtained.
- the battery temperature adjusting action by the temperature control air will be described.
- Temperature control air (cold air, hot air) blown out from the air outlet 35a of the temperature control unit 3 passes through the air distribution duct 9 and flows from the front of the vehicle toward the rear of the vehicle. Then, as shown by an arrow B in FIG. 6, temperature-controlled air is blown out from the blowing opening 91 of the air distribution duct 9 along the stack front upper area 21 a of the first battery stack 21 in a wide range in the vehicle width direction. . Therefore, heat exchange is performed between the temperature-controlled air blown from the blowout opening 91 of the air distribution duct 9 and the first battery stack 21.
- the temperature-controlled air heat exchanged with the first battery stack 21 is divided into both sides in the vehicle width direction and flows into the annular passage 38 as indicated by arrows C and C in FIG.
- the temperature-controlled air flowing into the annular passage 38 flows from the vehicle rear side toward the vehicle front side through the vehicle side passage portions of the annular passage 38.
- some of the temperature-controlled air flows, as indicated by arrows E, F, and G in FIG. 6, the transverse passage 37, the second battery stack 22, and the third battery stack. It flows toward the central passage 36 through the gap 23 and joins in the central passage 36. Therefore, heat exchange is performed between the temperature-controlled airflow in the vehicle width direction that flows toward the central passage 36 and the second battery stack 22 and the third battery stack 23.
- the temperature-controlled air flowing from the vehicle rear side of the annular passage 38 toward the vehicle front as it is in the vehicle side passage portion of the annular passage 38 is the vehicle front side passage portion of the annular passage 38. Is returned to the suction side of the temperature control unit 3.
- the temperature-controlled air that merges and flows through the central passage 36 from the rear of the vehicle toward the front of the vehicle is And then returned to the suction side of the temperature control unit 3. In this way, when the temperature-controlled air after heat exchange is returned to the suction side of the temperature-control unit 3, the returned temperature-controlled air is sucked, and cold air or warm air is created again by the temperature-control unit 3. Thus, the temperature control action is repeated.
- the temperature control air from the temperature control unit 3 passes through the air distribution duct 9 from the air distribution port 35a, and from the blowout opening 91 of the air distribution duct 9 to the upper stack front area 21a of the first battery stack 21.
- a structure that blows out toward the rear of the vehicle is adopted.
- the cooling effect by the traveling wind is large for the battery stack on the front side of the vehicle and is small for the battery stack on the rear side of the vehicle. For this reason, when the temperature distribution of the battery stack in the case is seen, the temperature distribution of the battery rear side battery stack is higher than that of the vehicle front side battery stack. If the cooling air is blown first to the battery stack on the front side of the vehicle in this temperature distribution state, the cooling air is delayed to reach the battery stack on the rear side of the vehicle, and the battery stack on the rear side of the vehicle continues for a long time. A temperature distribution state with a large drop is maintained for a long time.
- the temperature of the first battery stack 21 which is high in temperature, decreases with good response, and then the ambient temperature in the internal space of the battery pack case 1 decreases.
- the second and third battery stacks 22 and 23 are cooled. For this reason, the temperature difference between the first battery stack 21 and the second and third battery stacks 22 and 23 is suppressed to be small in a short time, and the temperature equalization of the battery stacks 21, 22 and 23 is efficiently achieved.
- the battery pack case When laying the battery pack under the floor, the battery pack case is watertight, taking into account that splash water, mud, and dust from submerged roads and vehicles in front of the vehicle may enter the battery pack and affect the electrical equipment. Adopt structure.
- the battery pack case has a watertight structure, if an evaporator is provided in the case, the condensed water generated in the evaporator core is reduced compared to a battery pack that is not watertight (open structure). It cannot be actively discharged to the outside using piping.
- an air heating type PTC heater 34 having a net-like fin 34c downstream of the blower fan 33 is provided. The configuration to install was adopted.
- the battery pack case 1 since the battery pack case 1 has a watertight structure, foreign matter such as water and mud does not enter the case from the outside, and condensed water generated in the evaporator 32 can be reduced.
- the blower fan 33 and the net-like fins 34c are arranged at the downstream position of the evaporator 32, fine granular condensed water sent from the evaporator 32 is blower fan. It blocks by adhering to 33 and the net-like fin 34c and evaporating.
- the blower fan 33, the mesh fin 34c, and the unit duct 35 at the downstream position of the evaporator 32 the distance from the evaporator 32 to the battery electrode is secured, so that the condensed water does not easily reach the electrode of the battery stack 2.
- the condensed water generated by the evaporator 32 of the temperature control unit 3 is prevented from reaching the electrodes of the battery stack 2.
- the blower fan 33 is disposed between the evaporator 32 and the PTC heater 34 having the net-like fins 34c. For this reason, when condensed water is generated in the evaporator 32, the blower fan 33 + the reticulated fin 34c is attached such that the condensed water first adheres to the blower fan 33 and evaporates, and the remaining condensed water adheres to the reticulated fin 34c and evaporates. Double block (attachment & evaporation) of condensed water by
- the distance from the evaporator 32 to the battery stack 2 is ensured by adopting a configuration in the order of the evaporator 32 ⁇ the blower fan 33 ⁇ the mesh fin 34c (unit duct 35). For this reason, compared with the case where the distance from an evaporator to a battery stack is short, condensed water does not reach the electrode of the battery stack 2.
- the unit duct 35 is connected with the air distribution duct 9 in which the blowing opening 91 is extended to the first battery stack 2 at the rear of the vehicle, so that a sufficient distance from the evaporator 32 to the battery stack 2 is secured.
- Example 1 the structure using the PTC heater 34 which has the net-like fin 34c as a fin member is employ
- the PTC heater 34 that heats the air can also be used as a function of preventing the condensate from splashing, which eliminates the need for a new mesh fin and is advantageous in terms of cost. Further, evaporation of the condensed water can be promoted by heating the PTC heater 34.
- Battery module (battery stack 2), A temperature control unit 3 for adjusting the temperature of the battery module (battery stack 2); A battery pack case 1 for housing the battery module (battery stack 2) and the temperature control unit 3;
- the temperature control unit 3 includes an evaporator 32 that performs heat exchange from the upstream side in the wind flow direction using the refrigerant of the vehicle interior air conditioner (air conditioner unit 107), a blower (blower fan 33) that circulates the air inside the pack case, It has a fin member (PTC heater 34) and a duct (unit duct 35) for sending air to the battery module (battery stack 2) (FIG. 7). For this reason, it is possible to prevent the condensed water generated by the evaporator 32 of the temperature control unit 3 from reaching the electrodes of the battery module (battery stack 2).
- the fin member is a PTC heater 34 having mesh fins 34c (FIG. 8). For this reason, in addition to the effect of (1), it is not necessary to newly provide a fin member, which is advantageous in terms of cost, and evaporation of condensed water can be promoted by heating the PTC heater 34.
- the battery pack case 1 is disposed at a position below the floor of the vehicle (FIGS. 1 and 2). For this reason, in addition to the effects of (1) or (2), the battery pack BP can be laid out under the floor, so that the living space in the passenger compartment and the luggage room can be widened, and passenger comfort and convenience can be improved. it can.
- the blower is a blower fan 33 having a waterproof structure (FIG. 7). For this reason, in addition to the effects (1) to (3), even if the condensed water is sucked, the blower motor 33 is prevented from malfunctioning because the blower motor is isolated from the water.
- the evaporator 32 has one core surface 32a disposed so as to be substantially parallel and facing the pack case inner surface (frame inner surface 11a),
- the blower (blower fan 33) was disposed so that the other core surface 32b of the evaporator 32 and the suction side 33a face each other substantially in parallel (FIG. 7). For this reason, in addition to the effects (1) to (4), the length required for mounting the evaporator 32 and the blower (blower fan 33) can be kept short, and the temperature control unit 3 can be made compact. it can.
- the battery pack case 1 is disposed at a position below the floor in the approximate center in the vehicle longitudinal direction.
- the temperature control unit 3 is disposed in the battery pack case 1 at a position close to the air conditioner compressor 103 disposed in the motor room 101 in front of the vehicle (FIG. 6).
- the evaporator 32 is disposed in front of the vehicle with respect to the blower (blower fan 33) (FIG. 7). For this reason, in addition to the effect of (6), the piping from the core part of the evaporator 32 to the refrigerant pipe connector terminal 13 taken out of the battery pack BP is shortened. For this reason, while the temperature control unit 3 in the battery pack BP can be reduced in size, it can prevent that the flow of temperature control air is obstructed by piping.
- Example 1 As mentioned above, although the battery temperature control apparatus of this invention has been demonstrated based on Example 1, about a concrete structure, it is not restricted to this Example 1, The summary of the invention which concerns on each claim of a claim As long as they do not deviate, design changes and additions are permitted.
- Example 1 an example in which the battery pack BP is arranged under the floor of the vehicle is shown. However, an example in which the battery pack is arranged in a luggage room of the vehicle may be used.
- Example 1 shows an example of a battery stack 2 (battery module group) in which a plurality of battery modules are stacked as the battery module.
- the battery module includes battery modules arranged without being stacked.
- Example 1 an example in which the PTC heater 34 having the mesh fin 34c is used as the fin member is shown.
- the fin member may have only a fin function for blocking (attaching and evaporating) condensed water.
- the fin shape is not limited to a net shape, and may be a honeycomb shape or a wave shape as long as it is a shape that can block (adhere & evaporate) condensed water.
- Example 1 an example of a unit that generates cold air and hot air as the temperature control unit 3 is shown.
- the temperature control unit may be an example of a unit that has an evaporator and generates only cold air.
- a fin member having only a fin function is used.
- Example 1 the temperature control unit 3 and the air distribution duct 9 are arranged in the internal space of the battery pack case 1.
- the air distribution duct is arranged so as to distribute air from the unit duct to the battery stack via the gap between the battery stacks.
- Example 1 shows an example in which the battery temperature control device of the present invention is applied to an electric vehicle equipped with only a traveling motor as a traveling drive source.
- the battery temperature control device of the present invention can also be applied to a hybrid vehicle equipped with a traveling motor and an engine as a traveling drive source.
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Abstract
Description
前記温調ユニットは、風流れ方向の上流側から、車室内エアコンの冷媒を用いて熱交換を行うエバポレータと、パックケース内気を循環させる送風機と、フィン部材と、前記バッテリモジュールへ風を送るダクトと、を有する。
すなわち、凝縮水ブロック作用に凝縮水の電極付着遅延作用が加わることで、凝縮水がフィン部材の下流位置に配置されたバッテリモジュールに到達することがない。
この結果、温調ユニットのエバポレータで発生した凝縮水が、バッテリモジュールの電極まで届いてしまうのを防止することができる。
実施例1のバッテリ温調装置における構成を、「バッテリパックBPの車載構成」、「バッテリパックBPの全体詳細構成」、「パックケース内部空間の領域区分構成」、「バッテリ温調装置の詳細構成」に分けて説明する。
図1及び図2は、実施例1のバッテリ温調装置を採用したバッテリパックBPが搭載された電気自動車を示す。以下、図1及び図2に基づき、バッテリパックBPの車載構成を説明する。
図3及び図4は、実施例1のバッテリ温調装置を採用したバッテリパックBPの詳細を示す。以下、図3及び図4に基づき、バッテリパックBPの全体詳細構成を説明する。
図5は、実施例1のバッテリ温調装置を採用したバッテリパックBPのケース内部空間の領域区分構成を示す。以下、図5に基づき、パックケース内部空間の領域区分構成を説明する。
図6~図9は、バッテリパックBPに搭載された実施例1のバッテリ温調装置の詳細を示す。以下、図6~図9に基づき、バッテリ温調装置の詳細構成を説明する。
実施例1のバッテリ温調装置における作用を、「バッテリパックBPのバッテリ温度調整作用」、「凝縮水による電極の短絡防止作用」に分けて説明する。
バッテリは温度依存度が高く、バッテリ温度が高過ぎても、また、バッテリ温度が低過ぎてもバッテリ性能が低下する。したがって、低外気温時や高外気温時に高いバッテリ性能を維持するためには、バッテリ温度を最適温度域に調整することが好ましい。以下、図6及び図7に基づき、これを反映するバッテリパックBPのバッテリ温度調整作用を説明する。
上記のように、エアコンユニット107の冷媒をエバポレータ32に導入して冷風を作り出すと、冷媒温度と雰囲気温度の差によりエバポレータ32の熱交換部(コア部)で凝縮水が発生する。この凝縮水が発生した場合、凝縮水を下流のバッテリ電極に届かないようにする工夫が要求される。以下、これを反映する凝縮水による電極の短絡防止作用を説明する。
すなわち、エバポレータ32で発生する凝縮水を低減する凝縮水低減作用に、凝縮水ブロック作用と凝縮水の電極付着遅延作用が加わることで、凝縮水が網状フィン34cの下流位置に配置されたバッテリスタック2に到達することがない。
この結果、温調ユニット3のエバポレータ32で発生した凝縮水が、バッテリスタック2の電極まで届いてしまうのが防止される。
これにより、空気を加熱するPTCヒータ34に凝縮水の飛散防止機能を兼用させることができるため、新たに網状フィンをつける必要が無くなりコスト的に有利になる。また、PTCヒータ34の加熱により、凝縮水の蒸発を促すことができる。
実施例1のバッテリ温調装置にあっては、下記に列挙する効果を得ることができる。
前記バッテリモジュール(バッテリスタック2)の温度を調整する温調ユニット3と、
前記バッテリモジュール(バッテリスタック2)及び前記温調ユニット3を収納するバッテリパックケース1と、
を備えたバッテリ温調装置において、
前記温調ユニット3は、風流れ方向の上流側から、車室内エアコン(エアコンユニット107)の冷媒を用いて熱交換を行うエバポレータ32と、パックケース内気を循環させる送風機(ブロワファン33)と、フィン部材(PTCヒータ34)と、前記バッテリモジュール(バッテリスタック2)へ風を送るダクト(ユニットダクト35)と、を有する(図7)。
このため、温調ユニット3のエバポレータ32で発生した凝縮水が、バッテリモジュール(バッテリスタック2)の電極まで届いてしまうのを防止することができる。
このため、(1)の効果に加え、新たにフィン部材を追加して設ける必要が無くなりコスト的に有利になるとともに、PTCヒータ34の加熱により、凝縮水の蒸発を促すことができる。
このため、(1)又は(2)の効果に加え、バッテリパックBPを床下にレイアウトすることで、車室内の居住空間やラゲッジルームが広く取れ、乗員の快適性・利便性を向上させることができる。
このため、(1)~(3)の効果に加え、凝縮水を吸い込んでも、ブロアモータが水分と隔離されているので、ブロアファン33が故障するのを防止することができる。
前記送風機(ブロアファン33)は、前記エバポレータ32の他方のコア面32bとサクション側33aが略平行かつ対面するように配置した(図7)。
このため、(1)~(4)の効果に加え、エバポレータ32と送風機(ブロアファン33)を搭載するために必要とする長さ寸法が短く抑えられ、温調ユニット3をコンパクトにすることができる。
前記温調ユニット3は、前記バッテリパックケース1内のうち、車両前方のモータルーム101に配置したエアコンコンプレッサ103に近い側の位置に配置した(図6)。
このため、(3)の効果に加え、エアコン冷媒を導く配管長さが短くなるので、配管のコスト・重量を低減できる。加えて、配管の長さによる冷媒の圧力損失も低減できるので、効率よくエバポレータ32を冷却することができる。
このため、(6)の効果に加え、エバポレータ32のコア部からバッテリパックBPの外へ取り出す冷媒管コネクタ端子13までの配管が短くなる。このため、バッテリパックBP内の温調ユニット3を小型化できるとともに、配管によって温調空気の流れが邪魔されることを防止することができる。
Claims (7)
- バッテリモジュールと、
前記バッテリモジュールの温度を調整する温調ユニットと、
前記バッテリモジュール及び前記温調ユニットを収納するバッテリパックケースと、
を備えたバッテリ温調装置において、
前記温調ユニットは、風流れ方向の上流側から、車室内エアコンの冷媒を用いて熱交換を行うエバポレータと、パックケース内気を循環させる送風機と、フィン部材と、前記バッテリモジュールへ風を送るダクトと、を有する
ことを特徴とするバッテリ温調装置。 - 請求項1に記載されたバッテリ温調装置において、
前記フィン部材は、網状フィンを有するPTCヒータである
ことを特徴とするバッテリ温調装置。 - 請求項1又は2に記載されたバッテリ温調装置において、
前記バッテリパックケースは、車両の床下位置に配置されている
ことを特徴とするバッテリ温調装置。 - 請求項1から3までの何れか1項に記載されたバッテリ温調装置において、
前記送風機は、防水構造によるブロアファンである
ことを特徴とするバッテリ温調装置。 - 請求項1から4までの何れか1項に記載されたバッテリ温調装置において、
前記エバポレータは、パックケース内側面と略平行かつ対面するように一方のコア面を配置し、
前記送風機は、前記エバポレータの他方のコア面とサクション側が略平行かつ対面するように配置した
ことを特徴とするバッテリ温調装置。 - 請求項3に記載されたバッテリ温調装置において、
前記バッテリパックケースは、車両前後方向の略中央の床下位置に配置し、
前記温調ユニットは、前記バッテリパックケース内のうち、車両前方のモータルームに配置したエアコンコンプレッサに近い側の位置に配置した
ことを特徴とするバッテリ温調装置。 - 請求項6に記載されたバッテリ温調装置において、
前記エバポレータは、前記送風機よりも車両前方位置に配置した
ことを特徴とするバッテリ温調装置。
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US20150291019A1 (en) | 2015-10-15 |
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EP2916383A4 (en) | 2015-11-18 |
CN104756305B (zh) | 2016-07-20 |
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