WO2008018374A1 - Système de refroidissement de batterie d'automobile - Google Patents

Système de refroidissement de batterie d'automobile Download PDF

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Publication number
WO2008018374A1
WO2008018374A1 PCT/JP2007/065235 JP2007065235W WO2008018374A1 WO 2008018374 A1 WO2008018374 A1 WO 2008018374A1 JP 2007065235 W JP2007065235 W JP 2007065235W WO 2008018374 A1 WO2008018374 A1 WO 2008018374A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
refrigerant
vehicle
cooling
battery cooling
Prior art date
Application number
PCT/JP2007/065235
Other languages
English (en)
Japanese (ja)
Inventor
Toshiharu Watanabe
Kazunori Namai
Toshiyuki Motohashi
Yoshikazu Takamatsu
Original Assignee
Calsonic Kansei Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2006220414A external-priority patent/JP2008044476A/ja
Priority claimed from JP2006225685A external-priority patent/JP2008054379A/ja
Application filed by Calsonic Kansei Corporation filed Critical Calsonic Kansei Corporation
Publication of WO2008018374A1 publication Critical patent/WO2008018374A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—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
    • 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
    • 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
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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
    • 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

Definitions

  • the present invention belongs to a technical field of a vehicle battery cooling system for cooling a traveling battery installed in a vehicle such as a hybrid vehicle or an electric vehicle.
  • This conventional vehicle battery cooling system includes a temperature sensor that detects the temperature of the battery, and a switching unit that switches between a refrigerant flow and a stop in a battery cooler having a refrigerant path connected in parallel with the air conditioning evaporator. And a control means for controlling the switching means according to the detected battery temperature.
  • This control means causes the low-temperature and low-pressure refrigerant to flow through the battery cooler when the battery temperature exceeds the preset upper limit temperature, and stops the low-temperature and low-pressure refrigerant from flowing through the battery cooler when the battery temperature falls below the preset lower limit temperature. Control to do.
  • the battery when the battery is cooled, the battery is given a cold storage amount defined by the difference between the lower limit temperature and the upper limit temperature, so that the battery can be cooled until the battery temperature reaches the upper limit temperature from the lower limit temperature.
  • the frequency of starting the compressor which is driven by the power of the internal combustion engine and constitutes the refrigeration cycle is reduced (for example, see Patent Document 1).
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2001-105843 (2-9 pages, all figures)
  • the present invention has been made paying attention to the above-mentioned problems, and its object is to make the battery assembly more compact and improve its vehicle mountability while also affecting the fuel efficiency of the vehicle. It is providing the vehicle battery cooling system which can suppress this.
  • a vehicle battery cooling system of the present invention includes a battery installed in a vehicle and used for traveling, a battery case covering at least the bottom side of the battery, and a battery case on the bottom side of the battery.
  • a battery cooling line that is integrally provided in the battery case portion and serves as a flow path for flowing the refrigerant; and a refrigerant circulating means that supplies and recovers the refrigerant to the battery cooling line.
  • the battery cooling line is provided in the battery case portion on the bottom side of the battery, the battery case can be made compact by the height of the battery cooling line. As a result, the vehicle While improving the mountability, it is possible to suppress the impact on vehicle fuel efficiency.
  • FIG. 1 is a partial cross-sectional side view of a battery cooling structure in a vehicle battery cooling system according to a first embodiment of the present invention.
  • FIG. 2 is a side view for explaining the installation position of the battery in the vehicle in the vehicle battery cooling system of the first embodiment.
  • FIG. 3 is a partial cross-sectional side view of a battery cooling structure in a vehicle battery cooling system according to a second embodiment of the present invention.
  • FIG. 4 is a system diagram of an air conditioner system that is cooperatively controlled with the vehicle battery cooling system according to the second embodiment.
  • FIG. 5 is a perspective view of a vehicle battery cooling system according to a third embodiment of the present invention.
  • FIG. 6 is a perspective view of a vehicle battery cooling system according to a fourth embodiment of the present invention.
  • FIG. 7 is a perspective view of a vehicle battery cooling system according to a fifth embodiment of the present invention.
  • FIG. 8 is an enlarged perspective view of a refrigerant line used in a vehicle battery cooling system according to Embodiment 6 of the present invention.
  • FIG. 9 is an explanatory front view of a battery cooling structure in a vehicle battery cooling system according to a seventh embodiment of the present invention.
  • FIG. 10 An explanatory top view of the battery cooling structure in the vehicle battery cooling system of the seventh embodiment.
  • FIG. 11 An explanatory side view of the battery cooling structure in the vehicle battery cooling system of the seventh embodiment.
  • FIG. 12 A front view for explaining the battery cooling structure in the vehicle battery cooling system according to the eighth embodiment of the present invention.
  • FIG. 13 An explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the eighth embodiment.
  • FIG. 14 is an explanatory front view of the battery cooling structure in the vehicle battery cooling system according to the ninth embodiment of the present invention.
  • FIG. 15 is an explanatory front view of a battery cooling structure in a vehicle battery cooling system according to a tenth embodiment of the present invention.
  • Refrigerant supply line for evaporator (first evaporator side refrigerant supply line)
  • FIG. 1 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the first embodiment.
  • FIG. 2 is an explanatory diagram of battery installation positions in the vehicle battery cooling system of the first embodiment.
  • the vehicle battery cooling system includes a battery case 1, a battery 2, and refrigerant lines 31 and 32 as main components.
  • the battery case 1 is a structural member for fixing the battery 2 above the vehicle body panel 4 under the vehicle trunk or floor, and a protective member that protects the battery 2 from the surroundings. It is.
  • the battery case 1 does not have to cover the entire surface of the battery 2 but forms at least a bottom surface to support the battery 2 directly or indirectly.
  • the battery case 1 is provided with a cooling line 11 through which a refrigerant flows through the bottom surface portion.
  • the cooling line 11 is provided integrally with the inside of the battery case 1.
  • the cooling line 11 is connected to a refrigerant supply line 31 for allowing the refrigerant to flow into the cooling line 11 and a refrigerant recovery line 32 for allowing the refrigerant to flow out of the cooling line 11.
  • the refrigerant in the cooling line 11 is supplied and recovered by the air conditioning system.
  • the refrigerant supply line 31 and the refrigerant recovery line 32 correspond to the refrigerant circulation means of the present invention, and the cooling line 11 corresponds to the battery cooling line of the present invention.
  • refrigerant supply / recovery lines 31 and 32 pass through the lower part of the vehicle body panel 4 as shown in FIG.
  • a solenoid valve 6 is provided in the middle of the refrigerant supply line 31 to control the amount of refrigerant supplied to the cooling line 11.
  • This flow rate control may be performed by an air conditioner system or may be controlled by a controller (not shown) that controls charging / discharging of a battery.
  • the battery 2 is a lithium ion battery that performs charging and discharging by exchanging lithium ions between electrodes.
  • Lithium-ion batteries have the advantageous feature that the so-called memory effect does not occur.
  • the battery 2 used for running the vehicle is an assembled battery in which a plurality of lithium ion batteries are combined in series.
  • Japanese Patent Application Laid-Open No. 2005-116427 is given as a detailed example of an assembled battery used for traveling.
  • the structure of the assembled battery is not limited to this detailed example, and a combination of a plurality of minimum unit batteries combined with a plate-like lithium ion battery is used. The total number reaches more than several tens.
  • the vehicle battery cooling system according to the first embodiment is used for a hybrid vehicle or an electric vehicle.
  • the battery 2 used for traveling generates heat due to charging / discharging during traveling, and reaches a high temperature when this charging / discharging is repeated.
  • the vehicle battery cooling system solves such a problem, maintains the battery at a temperature at which good performance can be exhibited by aggressive cooling, and further improves the vehicle mountability. At the same time, both room air conditioning and battery cooling can be achieved, and the impact on fuel consumption of the vehicle can be suppressed.
  • the heat of the battery 2 that generates heat due to charging / discharging during traveling is transferred to the battery case 1.
  • the electromagnetic valve 6 is opened, and the cooling line 11 that is integrally installed inside the bottom portion of the battery case 1 is opened. Since the refrigerant is circulated, the heat of the battery 2 is absorbed through the battery case 1.
  • the heat of the battery 2 is radiated to the outside by efficiently exchanging the heat of the refrigerant whose temperature has risen due to heat absorption with the outside air or traveling wind by the condenser of the air conditioning system.
  • the battery 2 can be kept at an appropriate temperature, and the performance of the battery 2 can be exhibited well.
  • cooling is performed on the bottom surface of the battery case 1 so that heat transfer is performed on a wide facing surface, so that it is efficiently performed. Can be cooled.
  • the refrigerant line 11 is integrally provided in the notch case 11 portion on the bottom side of the battery 2, the outer shape of the battery case 1 is at least the size of the refrigerant line 11. Can be made compact and space-saving, improving vehicle mountability and fuel efficiency.
  • a cooling line 11 for the battery 2 that serves as a flow path for the refrigerant and a refrigerant supply 'recovery lines 31 and 32 for connecting the air conditioning system to supply and recover the refrigerant to the cooling line 11 for the battery 2
  • the battery case main body can be made more compact, and as a result, the impact on the fuel consumption of the vehicle can be suppressed while improving the vehicle mountability.
  • the vehicle battery cooling system according to the second embodiment of the present invention is an example in which the refrigerant line is arranged in parallel with the air conditioning line.
  • Example 2 The configuration of Example 2 will be described.
  • FIG. 3 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the second embodiment.
  • FIG. 4 is an explanatory diagram of an air conditioner system that is cooperatively controlled with the vehicle battery cooling system of the second embodiment.
  • the refrigerant supply line for supplying the refrigerant is divided into two directions, one of which is directed to the refrigerant line 11, the first refrigerant supply line 31, and the other is the evaporator for air conditioning 5 It is set as the medium supply line 51 for the evaporator.
  • an electromagnetic valve 6 is provided in a two-way distribution section between the refrigerant supply line 31 and the evaporator refrigerant supply line 51, and the distribution amount of the refrigerant to these is changed.
  • This control is performed by the controller 105 of the air conditioning system.
  • the air conditioning evaporator corresponds to the first evaporator of the present invention
  • the evaporator medium supply line 51 corresponds to the first evaporator-side refrigerant supply line of the present invention.
  • a refrigerant recovery line 32 that recovers refrigerant from a cooling line 11 provided in the bottom portion of the battery case 1 includes an evaporator refrigerant recovery line 52 that recovers a part of the refrigerant from the air conditioning evaporator 5. Combine them so that they are directed toward the air conditioning system, that is, the condenser 101 and the electric compressor 102.
  • the high-pressure refrigerant compressed by the electric compressor 102 is sent to the condenser 101 to cool and dissipate the heat, and the refrigerant is liquefied.
  • the refrigerant supply line 31 and air conditioning evaporator 5 Directed to solenoid valve 6 and directed to cooling line 11 of battery case 1; directed to refrigerant supply line 31 and air conditioning evaporator 5; distributed to evaporator refrigerant supply line 51; and refrigerant to these Control the distribution flow.
  • the refrigerant is expanded to a low pressure by a valve (not shown), the refrigerant is evaporated by the air conditioning evaporator 5 to cool the air sent to the passenger compartment by the fan 104, and the evaporated low-pressure refrigerant is converted into the refrigerant recovery line 32 and the evaporator.
  • the refrigerant is recovered by the refrigerant recovery line 52 and sent to the electric compressor 102 for circulation.
  • the electric compressor 102 and the electromagnetic valve 6 are controlled by a controller 105 in the air conditioner system. Description of sensors etc. is omitted.
  • the controller 10 5 of this air conditioner system communicates with the controller of the battery 2 (not shown) through in-vehicle communication, etc., and communicates necessary information and commands to control the refrigerant flow rate by the solenoid valve 6. .
  • a valve for expanding the refrigerant to a low pressure is provided in the refrigerant line 31 (not shown), but may be provided integrally with the electromagnetic valve 6.
  • the refrigerant supply 'cooling lines 31 and 32 for cooling the battery 2 are provided in parallel with the evaporator refrigerant supply to the air conditioning evaporator 5' recovery lines 51 and 52.
  • the solenoid valve 6 by controlling the distribution ratio of the refrigerant flow rate freely with the solenoid valve 6, indoor air conditioning and battery cooling can be performed accurately and at the same time.
  • the refrigerant circulation means is a refrigerant supplied to the cooling line 11 of the battery 2 provided in parallel with the refrigerant supply to the evaporator refrigerant supply 'recovery lines 51, 52 in the vehicle air conditioning system.
  • Supply / recovery lines 31 and 32 and evaporator refrigerant supply to air conditioning evaporator 5 ⁇ Refrigerant supply to recovery lines 51 and 52 and cooling line 11 of battery 2 ⁇
  • Embodiment 3 of the present invention is an example in which cooling is performed with a refrigerant flow in one direction on a cooling line provided in parallel with a plurality of battery cases.
  • Example 3 The configuration of Example 3 will be described.
  • FIG. 5 is an explanatory diagram of the vehicle battery cooling system according to the third embodiment.
  • a plurality of cooling lines 11 are arranged in parallel in the bottom surface of the notch case 1 so as to be integrated with the notch case 1.
  • the plurality of cooling lines 11 are provided integrally with the extruded material by providing the bottom surface of the battery case 1 by extrusion processing.
  • the battery 2 is configured by a plurality of units, arranged on the bottom surface of the battery case 1 in at least three places as shown in FIG. 5, and cooled to the lower left and right positions of each battery 2. Make sure that each line 11 is located.
  • cooling lines 11 are extended so as to extend along the longitudinal direction of the plurality of batteries 2.
  • the configuration for supplying and collecting the refrigerant is the same as that of the second embodiment.
  • the refrigerant flows in the same flow direction in the cooling lines 11 provided in parallel. That is, as in the first and second embodiments, the inside of the cooling line 11 is caused to flow from the rear of the vehicle to the front of the vehicle by the flow of refrigerant. Since other configurations are the same as those in the first and second embodiments, the description thereof is omitted.
  • Example 3 the refrigerant is caused to flow in the same direction through the plurality of parallel cooling lines 11. For this reason, the cooling of the battery 2 becomes the main endothermic action without causing the heat generation and endothermic relationships that the cooling lines 11 cancel each other out, and the cooling is performed efficiently.
  • the heat transfer area is increased and heat exchange is performed, so that more efficient cooling is achieved.
  • the battery case 1 in which the cooling line 11 is provided on the body also serves as a cold storage material.
  • the battery case 1 is sufficiently pre-cooled by the amount of cooling that exceeds the heat generation amount of the battery 2 and the response delay of the cooling performance when the cooling amount is controlled low as the heat generation of the battery 2 decreases. Will be.
  • the battery case 1 in which the cooling line 11 is integrally formed by the extruded material has a remarkable effect that the heat capacity is large.
  • the compatibility with the air conditioning in the vehicle interior can be further improved by storing the battery case 1 in a cold state.
  • a cooling line 11 is provided on the bottom surface of the battery case 1 mounted on the vehicle body panel 4, and the battery 2 is warmed by the radiant heat from the road surface when the road surface temperature is high because the battery case 1 is a cold storage material. Can be suppressed.
  • the cooling line 11 of the battery 2 is integrally provided with the battery case portion on the bottom surface side of the battery 2, and a plurality of the cooling lines 11 are provided in parallel. cold Since the medium is flowed, the battery can be further efficiently cooled, and the compatibility with the air conditioning in the vehicle interior can be further improved.
  • the vehicle battery cooling system according to the fourth embodiment of the present invention is an example in which a cooling line is also provided near the side of the battery.
  • Example 4 The configuration of Example 4 will be described.
  • FIG. 6 is an explanatory diagram of the vehicle battery cooling system of the fourth embodiment.
  • a plurality of cooling lines 11 are arranged in parallel on the bottom surface of the battery case 1 and provided integrally with the battery case 1 by an extruded material.
  • the cooling line 7 is provided on the upper surface of the bottom surface of the battery case 1 in the vicinity of the side portions on both sides of each battery 2.
  • the extension direction of the cooling line 7 is the same as that of the cooling line 11, and the direction in which the refrigerant flows is the same as that of the cooling line 11.
  • Example 4 the battery 2 is cooled by the cooling line 11 through the bottom surface of the battery case 1 and also cooled from the side by the cooling line 7 provided in the vicinity of the sides on both sides of each battery 2. Is done.
  • each battery 2 is cooled from three different directions, the cooling effect is enhanced.
  • the cooling line 11 and the cooling line 7 have the same flow direction of the refrigerant, it is possible to obtain a good cooling performance in which the absorbed refrigerant does not warm other refrigerant flows. .
  • the effect of the cold storage as described above is further enhanced.
  • the battery 2 has a side cooling line 7 that extends in the same direction as the battery 2 cooling line 11 and flows in the same direction as the battery 2 cooling line 11 in the vicinity of the side of the battery 2.
  • the cooling effect can be enhanced.
  • Embodiment 5 of the present invention is an example in which a space is provided inside the bottom side portion of the battery case.
  • Example 5 The configuration of Example 5 will be described.
  • FIG. 7 is an explanatory diagram of the vehicle battery cooling system according to the fifth embodiment.
  • the bottom of the battery case 8 has a box shape with a space inside, and a plurality of cooling pipes 81 are provided in parallel inside to form a cooling line.
  • the battery case 8 may have such a configuration.
  • Embodiment 6 of the present invention is an example in which the refrigerant line has a double tube structure.
  • FIG. 8 is an explanatory diagram of a refrigerant line in the vehicle battery cooling system of the sixth embodiment.
  • the refrigerant supply / recovery lines 31 and 32 for supplying and recovering the refrigerant of the air conditioner system and the battery case 1 are constituted by the double pipe 9 integrated.
  • the double pipe 9 uses the inner pipe IS as a refrigerant supply line on the high pressure side and the outer pipe OS side as a refrigerant recovery line on the low pressure side.
  • the inside and outside may be opposite to the above configuration with the low pressure side and the high pressure side. It is assumed that the battery case 1 is branched in two near the cooling line 11 and connected to the cooling line 11 respectively.
  • Example 6 has the following effects in addition to the effects (1) to (4) and (6).
  • the refrigerant line to the cooling line 11 of the battery 2 has a double-pipe structure consisting of a supply side and a recovery side, it is possible to simplify handling, reduce weight, and save space.
  • FIG. 9 is an explanatory front view of the battery cooling structure in the vehicle battery cooling system of the seventh embodiment.
  • FIG. 10 is an explanatory top view of the battery cooling structure in the vehicle battery cooling system of the seventh embodiment.
  • FIG. 11 is an explanatory side view of the battery cooling structure in the vehicle battery cooling system of the seventh embodiment.
  • the battery cooling system for a vehicle in the seventh embodiment includes a battery case 1, a battery 2, a battery evaporator 106, a blower fan 108, a water drain 107, and a bottom portion of the battery case 1.
  • the refrigerant line 11 similar to 6 is the main component.
  • the battery case 1 is shown through the inside so as to show only the outline.
  • the space with the battery 2 is larger than that of the first to sixth embodiments, and the battery evaporator 106, the blower fan 108, etc. can be installed in this space.
  • Example 7 is also provided with a refrigerant line 11 on the bottom surface side in the same manner as in Examples 1 to 6, and the refrigerant supply line 31 and the refrigerant collection line 32 are connected.
  • the amount of refrigerant supplied to the refrigerant line 11 is not shown! /, And the force is controlled by the electromagnetic valve 6. These are omitted in the figure.
  • battery evaporator 106 is provided inside battery case 1, and performs heat exchange between the refrigerant supplied and recovered by the air conditioner system and the ambient air. Note that the battery evaporator 106 constitutes the second evaporator of the present invention, and the blower fan 108 sends the cooling air heat-exchanged by the battery evaporator 106 to the battery 2.
  • the positional relationship between the battery evaporator 106 and the blower fan 108 is such that the blower fan 108 is positioned below the battery evaporator 106 as shown in FIGS.
  • the battery evaporator 106 is positioned upstream of the air flow, and the blower fan 108 is positioned downstream thereof.
  • the drainage drain 107 receives condensed water from the evaporator 106 positioned above and discharges it to the outside of the battery case 1.
  • the evaporator 106 is inclined to be mounted in the battery case 1 as shown in FIG. 11 so that the condensed water is moved to the outside of the battery case 1.
  • the surface of the evaporator 106 is subjected to a hydrophilic surface treatment.
  • the condensed water when condensed water is generated on the surface of the evaporator 106, the condensed water exhibits hydrophilicity to the surface treatment under predetermined conditions.
  • the angle between the condensed water and the surface treatment, that is, the contact angle should be 5 ° or less.
  • the blower fan 108 can be controlled by a controller that charges or discharges the battery, or by a controller of the air conditioner system.
  • the electric compressor 102 and the electromagnetic valve 6 are controlled by a controller 105 in the air conditioner system. Description of sensors etc. is omitted.
  • the controller 10 5 of this air conditioner system communicates with the controller of the battery 2 (not shown) through in-vehicle communication, etc., and communicates necessary information and commands to control the refrigerant flow rate by the solenoid valve 6. .
  • a valve that expands the refrigerant to a low pressure is also provided in the refrigerant supply line 31 (not shown). Further, it may be provided integrally with the electromagnetic valve 6.
  • the vehicle battery cooling system of Example 7 is used for a hybrid vehicle or an electric vehicle. Is.
  • the battery 2 used for traveling generates heat due to charging / discharging during traveling, and reaches a high temperature by repeating this charging / discharging.
  • the vehicle battery cooling system of Example 7 solves such a problem and keeps the battery at a temperature at which good performance can be exerted through active cooling, and further reduces the noise while suppressing noise. Cool the battery well.
  • the battery 2 above the battery 2 is cooled by the refrigerant line 11 provided in the battery 2 bottom side portion of the battery case 1. .
  • Example 7 the temperature of the air supply air is lowered by the evaporator 106 provided in the battery case 1, and then the cooling air is sent to the battery 2 by the blower fan 108 for cooling.
  • Example 7 Since this high cooling efficiency can be obtained, in Example 7, the evaporator 106 and the blower fan 108 are downsized, and the entire battery case 1 is compactly assembled.
  • the battery case 1 cools the battery 2 so that the cooling air from the evaporator 106 is less likely to flow outside, the power S can be obtained with higher power. Monkey.
  • the battery 2 that generates heat due to charging / discharging during traveling is more efficiently cooled by the refrigerant flowing through the refrigerant line 11 and by the cooling air sent from the evaporator 106 and the blower fan 108 that exchange heat with the refrigerant from the air conditioner system. Cools well.
  • the battery 2 can be kept at an appropriate temperature, and the performance of the battery 2 can be exhibited well. Therefore, even when the battery 2 that generates higher heat is used, the cooling performance can be sufficiently exhibited.
  • the active cooling by the evaporator 106 is performed.
  • the blower fan 108 can be reduced in size because the cooling is performed efficiently in the battery case 1 from the vicinity.
  • the rotational speed of the blower fan 108 is reduced, or the maximum rotational speed of the blower fan 108 is reduced, or the operation time is reduced by the maximum rotational speed.
  • the noise generated by the blower fan 108 is suppressed.
  • the surface of the evaporator 106 is subjected to a hydrophilic surface treatment with a contact angle of 5 ° or less, the attachment of the evaporator 106 is inclined, and the drainage drain 107 is provided. Therefore, the condensed water does not scatter and is collected from the drainage drain 107 through the surface of the evaporator 106 with respect to the ventilation by the blower fan 108. Further, the positional relationship between the evaporator 106 and the blower fan 108 is set so that the evaporator 106 is on the upstream side, and the air generated by the blower fan 108 does not scatter the condensed water generated on the surface of the evaporator 106.
  • the evaporator 106 and the blower fan are installed so as not to increase the size of the battery case 1 containing the battery 2 which is a battery pack provided in a box shape so as to save space. 108 is provided inside.
  • the external shape does not have to be a shape that protrudes greatly as shown in FIGS. Thereby, it becomes a space-saving thing as a whole, and vehicle mounting property improves.
  • the air conditioner system that supplies and recovers the refrigerant to the vehicle battery cooling system of the first embodiment is configured by the electric compressor 102 in the hybrid vehicle and does not become an engine driving load. To the fuel efficiency of the vehicle To suppress the effects of
  • Battery 2 installed in the vehicle and used for traveling, battery case 1 that houses battery 2, refrigerant line 11 that is integrally provided in the bottom side portion of battery case 1, and battery case A blower fan 108 provided inside 1 to generate air flow to battery 2 and an evaporator 106 provided to cool the air flow by exchanging heat between the refrigerant flowing inside battery case 1 and the air sent to battery 2 Therefore, the battery 2 can be cooled more strongly with the refrigerant and the cooling air, and can be sufficiently cooled even when used for the battery case 1 of the battery 2 that easily generates high heat.
  • the evaporator 106 When cooling with this cooling air, the evaporator 106 is arranged in the vicinity of the battery 2 in the notch case 1, so that the cooling efficiency becomes very high and the notch case 1 can be made compact. Further, in the cooling by the cooling air, the battery can be cooled with good cooling efficiency while suppressing the noise of the blower fan 108.
  • the ability to accurately control the battery temperature through effective cooling can suppress a decrease in battery life, that is, capacity.
  • the vehicle battery cooling system according to the eighth embodiment is for a vehicle in which an integral cooling line is provided in the bottom side portion of the battery case, and the blowing direction of the cooling air and the flow direction of the refrigerant in the cooling line are opposed to each other. It is an example of a battery cooling system.
  • FIG. 12 is an explanatory front view of the battery cooling structure in the vehicle battery cooling system of the eighth embodiment.
  • FIG. 13 is an explanatory perspective view of the battery cooling structure in the vehicle battery cooling system of the eighth embodiment.
  • Example 8 the cooling line 11 for flowing the refrigerant into the bottom part of the battery case 1 is shown in FIG. A plurality is provided as shown. This cooling line 11 is provided integrally with the extruded material by providing the bottom surface of the battery case 1 by extrusion.
  • cooling lines 11 are respectively arranged at the lower left and right of the battery 2 so that the cooling lines 11 extend in the longitudinal direction of the plurality of batteries 2.
  • Example 8 it is assumed that the air conditioner system of FIG. 4 used in Example 2 is coordinated, and a refrigerant supply line 31 that is supplied from the air conditioner system is connected to the end of the cooling line 11, and the cooling line The other side of 11 and the evaporator 106 are connected by the refrigerant intermediate line 33.
  • the battery evaporator 106 is connected to the air conditioning evaporator 5 and the electric compressor 102 of the air conditioning system shown in FIG. 4 via the refrigerant line 32 for recovering the refrigerant.
  • the refrigerant from the air conditioner system is circulated through the cooling line 11 and the evaporator 106 in series and circulated to the air conditioner system.
  • the refrigerant intermediate line 33, the refrigerant supply line 31, and the refrigerant recovery line 32 correspond to the refrigerant circulation means of the present invention.
  • the cooling air generated by the blower fan 108 and the battery evaporator 106 is sent along the longitudinal direction of the battery 2 from the evaporator 106 and the blower fan 108 side.
  • the direction in which the refrigerant flows in the cooling lines 11 provided on the bottom surface of the battery case 1 is opposite to the cooling air.
  • Example 2 the heat of the battery 2 generated by charging / discharging during traveling is transferred to the battery case 1, and the refrigerant flows through the cooling line 11 integrally provided on the bottom surface of the battery case 1. The heat is absorbed.
  • cooling air cooled by the battery evaporator 106 cools the battery 2 in the reverse direction of the refrigerant flow in the cooling line 11.
  • the battery 2 is cooled from above and below and from both sides in the longitudinal direction. Therefore, it is efficiently cooled and uniform cooling is performed. In other words, since it is on the downstream side in the flow direction of the cooling air where the temperature of the cooling air rises, it is on the cooling line 11 start side, that is, on the upstream side of the refrigerant flow.
  • the battery temperature can be easily controlled below a predetermined temperature.
  • cooling the battery 2 with the refrigerant through the bottom surface of the battery case 1 increases the heat transfer area and performs heat exchange, thereby further efficiently cooling.
  • the battery case 1 in which the cooling line 11 is provided on the body also serves as a cold storage material. That is
  • Battery case 1 is sufficiently pre-cooled by the amount of cooling that exceeds the amount of heat generated by battery 2 and the delay in the cooling performance when the amount of cooling is controlled to a low level as the amount of heat generated by battery 2 decreases. It will be.
  • the battery case 1 in which the cooling line 11 is integrally formed by the extruded material has a significant effect that the heat capacity is large while air is not interposed.
  • the compatibility with the air conditioning in the vehicle interior can be further improved by storing the battery case 1 in a cold state.
  • a cooling line 11 is provided on the bottom surface of the battery case 1 mounted on the vehicle body panel 6, and the battery 2 is warmed by the radiant heat from the road surface when the road surface temperature is high because the battery case 1 is a cold storage material. Can be suppressed.
  • the vehicle battery cooling system of Embodiment 8 has the following effects in addition to the effects (1), (6), (7), and (8).
  • Battery 2 cooling line 11 provided integrally with the battery case 1 portion on the bottom side of the battery 2 and serving as a flow path for the refrigerant, and air conditioning for supplying and collecting the refrigerant to the cooling line 11 of the battery 2 Refrigerant supply to evaporator 5 'Intermediate' recovery lines 31, 33, 32 are provided, and the cooling line 11 of the battery 2 is integrated with the battery case 1 part on the bottom side of the battery 2.
  • Several batteries are arranged in parallel, and the cooling lines 11 of the batteries 2 arranged in parallel are configured to flow the refrigerant in the same direction, so that the battery can be efficiently cooled.
  • the vehicle battery cooling system of Embodiment 9 is an example in which the cooling line is made shorter than the length of the battery in the longitudinal direction, and the cooling line is positioned downstream of the cooling air.
  • the configuration of Example 9 will be described.
  • FIG. 14 is an explanatory front view of the battery cooling structure in the vehicle battery cooling system of the ninth embodiment.
  • Example 9 as shown in FIG. 14, the length of battery 2 in the longitudinal direction is A, the length of battery 2 is long, that is, the length of cooling line 11 in the extending direction is B, B ⁇ A, and more specifically Specifically, B ⁇ A / 2.
  • the cooling line 11 is positioned downstream of the cooling air.
  • Example 9 by setting B ⁇ A / 2, the temperature rise due to the insufficient cooling effect on the downstream side of the cooling air flow by the battery evaporator 106 and blower fan 108 is appropriately cooled by the cooling line 11 To do.
  • the vehicle battery cooling system of the ninth embodiment has the following effects in addition to the effects (1), (7) to (9), (10), (11).
  • the length of the cooling line 11 in the same direction is made shorter than the length of the battery 2 in the flow direction of the cooling air by the blower fan 108, and the cooling line 11 is placed below the battery 2 on the downstream side of the cooling air. Therefore, the battery temperature control on the downstream side of the cooling air flow direction can be easily controlled below the predetermined temperature, the control accuracy can be improved, and the variation in battery temperature can be suppressed more accurately than force S. Can be.
  • Example 9 both cooling by the cooling air of the blower fan 108 and the battery evaporator 106 and cooling by heat absorption through the battery case 1 by the cooling line 11 are performed, but cooling of the blower fan 108 and the evaporator 106 by cooling air is performed.
  • Cooling by heat absorption through the battery case 1 by the cooling line 11 is performed only in the portion of the battery 2 on the downstream side of the cooling air where the cooling performance by the cooling air is reduced so as to obtain uniform and good cooling performance. To do.
  • the cooling effect of the battery 2 can be obtained while including the evaporator 106, the cooling line 11, and eventually the air conditioner system so that the cooling by the refrigerant is appropriately stopped to save energy.
  • Example 10 is an example in which the blower is a cross flow fan.
  • FIG. 15 is an explanatory front view of a part of the battery cooling structure in the vehicle battery cooling system of the tenth embodiment.
  • a long cross flow fan 41 is provided in the parallel direction of the battery 2, and a battery evaporator 109 is provided above the cross flow fan 41.
  • the battery evaporator corresponds to the second evaporator of the present invention.
  • the space in the parallel direction of the battery 2 is utilized, and the long cross flow fan 41 is provided in the parallel direction of the battery 2.
  • the cross flow fan 41 blows air uniformly from the longitudinal direction, that is, the parallel direction of the battery 2, the cooling air can be supplied uniformly to the surface of the battery 2 to be cooled. wear.
  • the vehicle battery cooling system of the tenth embodiment has the following effects in addition to the effects (1), 7) to (11).
  • blower is a cross flow fan, it is possible to further suppress cooling variation and to obtain good cooling performance.
  • vehicle battery cooling system of the embodiment has been described as being used in a hybrid vehicle or an electric vehicle, the vehicle battery cooling system may be used in, for example, a fuel cell vehicle.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un système de refroidissement de batterie d'automobile doté d'une batterie (2) disposée sur une automobile devant être utilisée pour la conduite ; un boîtier de batterie (1) pour recouvrir au moins le côté inférieur de la batterie (2) ; une ligne de refroidissement (11) pour la batterie (2) disposée d'un seul tenant avec la partie du boîtier de batterie qui est en contact avec le côté inférieur de la batterie (2) et constitue ainsi un canal d'écoulement pour l'écoulement d'un milieu de refroidissement ; et des lignes de milieu de refroidissement (31, 32) raccordées à un système de climatiseur pour alimenter et récupérer le milieu de refroidissement s'écoulant de la ligne de refroidissement (11) de la batterie (2).
PCT/JP2007/065235 2006-08-11 2007-08-03 Système de refroidissement de batterie d'automobile WO2008018374A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2006220414A JP2008044476A (ja) 2006-08-11 2006-08-11 車両用バッテリ冷却システム
JP2006-220414 2006-08-11
JP2006225685A JP2008054379A (ja) 2006-08-22 2006-08-22 車両用バッテリ冷却システム
JP2006-225685 2006-08-22

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009134938A (ja) * 2007-11-29 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2009193832A (ja) * 2008-02-15 2009-08-27 Calsonic Kansei Corp バッテリ冷却システム
WO2009146876A1 (fr) * 2008-06-06 2009-12-10 Behr Gmbh & Co. Kg Dispositif de refroidissement d'une batterie de véhicule
WO2011064956A1 (fr) * 2009-11-25 2011-06-03 パナソニック株式会社 Module de batterie
EP2388851A1 (fr) * 2010-05-18 2011-11-23 Behr GmbH & Co. KG Dispositif de refroidissement et procédé de fabrication d'un dispositif de refroidissement
KR101125588B1 (ko) * 2009-04-30 2012-06-20 주식회사 엘지화학 전지 시스템의 냉각 시스템 및 전지 시스템을 냉각하기 위한 방법
CN102656740A (zh) * 2009-12-25 2012-09-05 法雷奥日本株式会社 蓄电池温度调节系统的安全装置
JP2012243619A (ja) * 2011-05-20 2012-12-10 Kobelco Contstruction Machinery Ltd 蓄電器
JP2013256288A (ja) * 2013-08-08 2013-12-26 Mitsubishi Motors Corp 車両用エアコンシステムの制御装置
JP2016091951A (ja) * 2014-11-10 2016-05-23 株式会社デンソー 電池パック
JP2018006043A (ja) * 2016-06-28 2018-01-11 三洋電機株式会社 バッテリシステム及びバッテリシステムを備える電動車両
US9899712B2 (en) 2012-10-24 2018-02-20 Valeo Japan Co., Ltd. Battery temperature adjustment unit and vehicle having said unit installed
WO2018215324A1 (fr) * 2017-05-24 2018-11-29 Thyssenkrupp Ag Système de mise en température pour unité de stockage d'énergie électrique
CN110901334A (zh) * 2018-09-18 2020-03-24 夏普株式会社 空气调节机
CN113474936A (zh) * 2019-02-26 2021-10-01 株式会社电装 冷却系统

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JPH076796A (ja) * 1993-06-17 1995-01-10 Mitsubishi Alum Co Ltd 車載用バッテリーケース
JPH11107748A (ja) * 1997-10-07 1999-04-20 Nissan Diesel Motor Co Ltd ハイブリッド電気自動車の冷却システム
JP2001105843A (ja) * 1999-10-12 2001-04-17 Nippon Soken Inc バッテリ冷却装置
JP2001324289A (ja) * 2000-05-16 2001-11-22 Toshiba Ceramics Co Ltd 高温用熱交換器
JP2004538607A (ja) * 2001-08-09 2004-12-24 ポリリット 電池用熱ジャケット

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JPH076796A (ja) * 1993-06-17 1995-01-10 Mitsubishi Alum Co Ltd 車載用バッテリーケース
JPH11107748A (ja) * 1997-10-07 1999-04-20 Nissan Diesel Motor Co Ltd ハイブリッド電気自動車の冷却システム
JP2001105843A (ja) * 1999-10-12 2001-04-17 Nippon Soken Inc バッテリ冷却装置
JP2001324289A (ja) * 2000-05-16 2001-11-22 Toshiba Ceramics Co Ltd 高温用熱交換器
JP2004538607A (ja) * 2001-08-09 2004-12-24 ポリリット 電池用熱ジャケット

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009134938A (ja) * 2007-11-29 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2009193832A (ja) * 2008-02-15 2009-08-27 Calsonic Kansei Corp バッテリ冷却システム
WO2009146876A1 (fr) * 2008-06-06 2009-12-10 Behr Gmbh & Co. Kg Dispositif de refroidissement d'une batterie de véhicule
US8790808B2 (en) 2008-06-06 2014-07-29 Behr Gmbh & Co. Kg Device for cooling a vehicle battery
KR101125588B1 (ko) * 2009-04-30 2012-06-20 주식회사 엘지화학 전지 시스템의 냉각 시스템 및 전지 시스템을 냉각하기 위한 방법
JP4814405B2 (ja) * 2009-11-25 2011-11-16 パナソニック株式会社 電池モジュール
WO2011064956A1 (fr) * 2009-11-25 2011-06-03 パナソニック株式会社 Module de batterie
EP2518816A4 (fr) * 2009-12-25 2014-05-21 Valeo Japan Co Ltd Dispositif de sécurité pour système de régulation de température d'une batterie
CN102656740A (zh) * 2009-12-25 2012-09-05 法雷奥日本株式会社 蓄电池温度调节系统的安全装置
EP2518816A1 (fr) * 2009-12-25 2012-10-31 Valeo Japan Co., Ltd. Dispositif de sécurité pour système de régulation de température d'une batterie
EP2388851A1 (fr) * 2010-05-18 2011-11-23 Behr GmbH & Co. KG Dispositif de refroidissement et procédé de fabrication d'un dispositif de refroidissement
JP2012243619A (ja) * 2011-05-20 2012-12-10 Kobelco Contstruction Machinery Ltd 蓄電器
US9899712B2 (en) 2012-10-24 2018-02-20 Valeo Japan Co., Ltd. Battery temperature adjustment unit and vehicle having said unit installed
JP2013256288A (ja) * 2013-08-08 2013-12-26 Mitsubishi Motors Corp 車両用エアコンシステムの制御装置
JP2016091951A (ja) * 2014-11-10 2016-05-23 株式会社デンソー 電池パック
JP2018006043A (ja) * 2016-06-28 2018-01-11 三洋電機株式会社 バッテリシステム及びバッテリシステムを備える電動車両
WO2018215324A1 (fr) * 2017-05-24 2018-11-29 Thyssenkrupp Ag Système de mise en température pour unité de stockage d'énergie électrique
CN110901334A (zh) * 2018-09-18 2020-03-24 夏普株式会社 空气调节机
CN113474936A (zh) * 2019-02-26 2021-10-01 株式会社电装 冷却系统

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