WO2019155810A1 - Dispositif de refroidissement et système de régulation de température de batterie - Google Patents

Dispositif de refroidissement et système de régulation de température de batterie Download PDF

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Publication number
WO2019155810A1
WO2019155810A1 PCT/JP2019/000301 JP2019000301W WO2019155810A1 WO 2019155810 A1 WO2019155810 A1 WO 2019155810A1 JP 2019000301 W JP2019000301 W JP 2019000301W WO 2019155810 A1 WO2019155810 A1 WO 2019155810A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
passage
coolant
cooling
cooling device
Prior art date
Application number
PCT/JP2019/000301
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English (en)
Japanese (ja)
Inventor
祐紀 牧田
勝志 谷口
圭俊 野田
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2019570625A priority Critical patent/JP6975943B2/ja
Priority to CN201980003813.7A priority patent/CN111033877B/zh
Publication of WO2019155810A1 publication Critical patent/WO2019155810A1/fr

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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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—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
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • 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 disclosure relates to a cooling technique, and more particularly, to a cooling device and a battery temperature control system for cooling a battery.
  • Hybrid batteries and electric cars are equipped with battery systems that supply power to the motor that is the drive source.
  • a battery system for example, a plurality of battery modules including a plurality of battery cells are provided, and each battery module is installed on a cooling device (heat exchanger) in order to suppress a temperature rise of the battery module.
  • the cooling device the battery module is cooled by the heat of vaporization of the refrigerant therein (see, for example, Patent Document 1).
  • the battery module is cooled by the refrigerant in the cooling device, but it is difficult to flow the refrigerant evenly in the large-area cooling device that covers the entire plurality of battery modules. Therefore, at the time of cooling, there is a concern that the temperature of the refrigerant in the cooling device varies (in-plane variation), leading to variations in battery temperature within the battery module or between battery modules.
  • the present disclosure has been made in view of such circumstances, and an object of the present disclosure is to provide a technique for suppressing in-plane variation in battery temperature during battery cooling in a cooling device that cools an in-vehicle battery.
  • a cooling device that cools an in-vehicle battery, a housing, a cooling fluid passage that is provided inside the housing and allows a coolant to flow, A refrigerant passage that is provided inside the housing and allows a refrigerant to flow therethrough, and is connected to the housing on the first surface side on which the in-vehicle battery of the housing is mounted, and has a plurality of refrigerant passages extending in the first direction. Is provided.
  • the plurality of refrigerant passages are arranged apart from the adjacent refrigerant passages in a second direction different from the first direction, and the coolant passage is provided in contact with the housing between the adjacent refrigerant passages, A plurality of first coolant passages extending in the first direction are included.
  • in-plane variation in battery temperature during battery cooling can be suppressed.
  • FIGS. 1A to 1B are diagrams illustrating a structure of a battery temperature control system according to an embodiment.
  • 2 (a)-(b) are diagrams showing the internal structure of the coolant tank of FIG.
  • FIGS. 3A to 3C are views showing the internal structure of the coolant tank of FIG. It is sectional drawing which shows the internal structure of the cooling fluid tank of FIG.3 (c).
  • 5 (a)-(b) are diagrams showing another internal structure of the coolant tank of FIG. 6 (a) to 6 (c) are diagrams showing still another internal structure of the coolant tank of FIG.
  • It is a block diagram which shows the structure of the battery temperature control system of FIG. 8A to 8C are top views showing the arrangement of the battery modules in the battery temperature control system of FIG.
  • the embodiment relates to a cooling device for cooling a plurality of battery modules in a battery temperature control system mounted on a vehicle.
  • a cooling device for cooling a plurality of battery modules in a battery temperature control system mounted on a vehicle.
  • the temperature of the refrigerant flowing through the cooling device varies (in-plane). Variation).
  • Such variations in the temperature of the refrigerant lead to variations in the battery temperature within the battery module or between the battery modules. That is, the battery temperature in the battery temperature control system becomes uneven during cooling, which is not preferable in terms of cooling efficiency and battery reliability. For this reason, it is required to suppress in-plane variations in battery temperature during cooling of the battery module.
  • a plurality of refrigerant passages are joined to the cooling surface side of the casing constituting the cooling device that contacts the battery module, and adjacent to the surface of the plurality of refrigerant passages opposite to the battery module.
  • a coolant passage is disposed between the refrigerant passages.
  • the coolant passage allows the coolant to flow in order to suppress variations in the temperature of the coolant passage.
  • the coolant passage not only contacts the coolant passage but also contacts the cooling surface side of the cooling device casing, so that the heat received from the battery module is transferred to the low temperature portion of the coolant passage and the heat of the high temperature portion of the coolant passage. Is transferred to the low temperature part of the refrigerant passage.
  • the refrigerant passage is in contact with the battery module through the casing of the cooling device, the refrigerant can exchange heat directly with the battery module without being affected by the thermal resistance of the cooling liquid, and the battery module and the heat can be exchanged only with the cooling liquid.
  • the heat exchange efficiency is improved compared to the exchange.
  • parallel and vertical include not only perfect parallel and vertical, but also include cases where there is a deviation from parallel or vertical within an error range. Further, “substantially” means that they are the same in an approximate range. Furthermore, in the following embodiments, the same components are denoted by the same reference numerals, and redundant description is omitted. Moreover, in each drawing, a part of component is abbreviate
  • FIGS. 1A to 1B show the structure of the battery temperature control system 100.
  • FIG. FIG. 1A is a perspective view showing the structure of the battery temperature control system 100
  • FIG. 1B is a cross-sectional view taken along the line A-A 'of FIG.
  • an orthogonal coordinate system including an x axis, a y axis, and a z axis is defined.
  • the x axis and the y axis are orthogonal to each other within the bottom surface of the battery temperature control system 100.
  • the z-axis is perpendicular to the x-axis and the y-axis and extends in the height direction of the battery temperature adjustment system 100.
  • the positive directions of the x-axis, y-axis, and z-axis are each defined in the direction of the arrow in FIG. 1A, and the negative direction is defined in the direction opposite to the arrow.
  • the positive direction side of the x axis is called “front side”
  • the negative direction side of the x axis is called “rear side”
  • the positive direction side of the y axis is called “right side”
  • the negative direction side of the y axis is “ It is called “left side”
  • the positive direction side of the z axis may be called “upper side”
  • the negative direction side of the z axis may be called “lower side”.
  • FIG. 1A is a perspective view including the front side of the battery temperature control system 100.
  • the “front side” or “rear side” of the x axis and the “left side” or “right side” of the y axis do not define the mounting direction when the battery temperature control system is installed in the vehicle.
  • the battery temperature control system 100 includes a first battery module 10a, a second battery module 10b, a third battery module 10c, which are collectively referred to as a battery module 10, and a cooling device 20. .
  • the battery module 10 is installed on the upper surface of the cooling device 20.
  • the battery module 10 is, for example, a secondary battery that stores electrical energy that is a driving source of a driving motor in a hybrid vehicle or an electric vehicle.
  • the battery module 10 is a component that requires temperature adjustment such as cooling.
  • Each battery module 10 has a box shape that is longer in the front-rear direction than in the left-right direction, and is arranged in the left-right direction of the cooling device 20.
  • the cooling device 20 is a device for cooling the battery module 10. Since the length in the height direction of the cooling device 20 is shorter than the length in the front-rear direction and the left-right direction, the cooling device 20 has a plate shape with a low height.
  • the cooling device 20 may be called a cooling plate.
  • Three battery modules 10 are installed on the upper surface of the cooling device 20.
  • each battery module 10 is not limited to this, and may be a box shape, a square shape, or a cylindrical shape that is shorter in the front-rear direction than in the left-right direction.
  • a first coolant pipe 22a and a second coolant pipe 22b which are collectively referred to as a coolant pipe 22, are disposed on the right side surface of the cooling device 20.
  • the first coolant pipe 22a is disposed on the front side
  • the second coolant pipe 22b is disposed on the rear side.
  • a first refrigerant pipe 24 a and a second refrigerant pipe 24 b that are collectively referred to as a refrigerant pipe 24 are arranged on the front surface of the cooling device 20.
  • the first refrigerant pipe 24a is disposed on the left side
  • the second refrigerant pipe 24b is disposed on the right side.
  • the cooling liquid flows in from the first cooling liquid pipe 22a, and the cooling liquid flows out from the second cooling liquid pipe 22b.
  • the refrigerant flows in from the first refrigerant pipe 24a, and the refrigerant flows out from the second refrigerant pipe 24b.
  • An example of the refrigerant is HFC (Hydro Fluoro Carbon).
  • An example of the coolant is an antifreeze containing ethylene glycol.
  • the white arrow indicates the flow of the coolant, and the black arrow indicates the flow of the refrigerant.
  • the cooling device 20 is configured by combining a coolant tank 26 and a top plate 28. Specifically, the cooling device 20 attaches a top plate 28 to the cooling liquid tank 26 having a bowl-like shape having an opening on the upper side and a depressed central part so as to close the opening of the cooling liquid tank 26. Composed. Further, the cooling liquid tank 26 and the top plate 28 function as an external housing of the cooling device 20. In the internal space of the cooling device 20, a coolant passage 42 provided in contact with the top plate 28 and a coolant passage 30 provided in the coolant tank 26 are formed. The refrigerant passage 42 is a passage (flow passage) through which the refrigerant flows inside the cooling device 20, and the coolant passage 30 is a passage (flow passage) through which the cooling liquid flows in the cooling device 20.
  • Each battery module 10 is installed on the upper surface of the top plate 28 of the cooling device 20.
  • the coolant pipe 22 and the refrigerant pipe 24 are formed in the coolant tank 26 constituting the cooling device 20.
  • the coolant pipe 22 communicates with the coolant passage 30 inside the cooling device 20
  • the refrigerant pipe 24 communicates with the coolant passage 42 inside the cooling device 20. That is, it is configured such that the coolant flows in the coolant passage 30 and the coolant flows in the coolant passage 42.
  • FIG. 2 (a)-(b) show the internal structure of the coolant tank 26.
  • FIG. Here, the number of refrigerant passages 42 is “4”.
  • 2A is a perspective view showing the internal structure of the coolant tank 26, and
  • FIG. 2B is a cross-sectional view taken along the line B-B 'of FIG. 2A.
  • the upper surface is indicated as a cooling surface 34a, and the lower surface is indicated as an inner bottom surface 34b.
  • the cooling surface 34a is a surface on the battery module 10 side in FIGS. 1A to 1B, and is in contact with the battery module 10 through the top plate 28 in FIG. 1B.
  • the top plate 28 may be omitted for the sake of clarity.
  • the cooling fluid tank 26 includes a first coolant passage 42 a to a fourth coolant passage 42 d that are collectively referred to as a coolant passage 30 and a coolant passage 42.
  • Each of the refrigerant passages 42 has a rod shape extending in the front-rear direction of the coolant tank 26.
  • the plurality of refrigerant passages 42 are arranged while being separated from the adjacent refrigerant passages 42 in the left-right direction of the coolant tank 26. Further, the refrigerant flows through the refrigerant passage 42.
  • the some refrigerant path 42 is provided so that the lower surface of the top plate 28 in which the battery module 10 is installed may be contact
  • first upper passage 44a a portion of the coolant passage 30 sandwiched between the first refrigerant passage 42a and the second refrigerant passage 42b is defined as a first upper passage 44a.
  • second upper passage 44b a portion of the coolant passage 30 sandwiched between the second refrigerant passage 42b and the third refrigerant passage 42c is defined as a second upper passage 44b.
  • third upper passage 44c a portion of the coolant passage 30 sandwiched between the third refrigerant passage 42c and the fourth refrigerant passage 42d is defined as a third upper passage 44c.
  • the first upper passage 44a to the third upper passage 44c are collectively referred to as an upper passage 44.
  • a portion other than the plurality of refrigerant passages 42 and the plurality of upper passages 44 is defined as a lower passage 46.
  • the lower passage 46 corresponds to the lower part of the plurality of refrigerant passages 42 and the plurality of upper passages 44.
  • the upper passage 44 is called a first coolant passage
  • the lower passage 46 is called a second coolant passage.
  • path 46 were defined separately, these are continuous space. Therefore, the coolant can freely move between the plurality of upper passages 44 and lower passages 46.
  • W ′ is It is made larger than W. This is for obtaining an effective in-plane variation suppressing effect of temperature by the coolant.
  • FIGS. 3A to 3C show the internal structure of the coolant tank 26.
  • FIG. 3 (a) shows a top view of the internal structure of the refrigerant passage 42
  • FIG. 3 (b) shows a top view of the internal structure of the lower passage 46 of the coolant passage 30, and
  • FIG. The top view of the internal structure of the cooling fluid tank 26 is shown.
  • the aforementioned four refrigerant passages 42 extend in the front-rear direction.
  • coolant header 40a connected to the front side end of the 1st refrigerant path 42a and the 2nd refrigerant path 42b extends in the left-right direction.
  • a third refrigerant header 40c connected to the front end of the third refrigerant passage 42c and the fourth refrigerant passage 42d extends in the left-right direction.
  • the first refrigerant header 40a to the third refrigerant header 40c are collectively referred to as the refrigerant header 40.
  • coolant header 40a is connected to the 1st refrigerant
  • coolant header 40c is connected to the 2nd refrigerant
  • the coolant flows into the coolant tank 26 from the first coolant pipe 24a.
  • the refrigerant flows into the first refrigerant header 40a.
  • the refrigerant is branched from the first refrigerant header 40a into the first refrigerant passage 42a and the second refrigerant passage 42b, flows through the first refrigerant passage 42a and the second refrigerant passage 42b, and then merges in the second refrigerant header 40b. To do.
  • the refrigerant in the second refrigerant header 40b is branched into the third refrigerant path 42c and the fourth refrigerant path 42d, flows through the third refrigerant path 42c and the fourth refrigerant path 42d, and then merges in the third refrigerant header 40c. Further, the refrigerant flows through the third refrigerant header 40c and flows out from the second refrigerant pipe 24b.
  • a temperature difference is generated between the gas-liquid two-phase region having the saturation temperature of the refrigerant and the superheated vapor region in which the refrigerant is vaporized, and the refrigerant flow rate of each refrigerant passage 42, particularly the liquid refrigerant ( A temperature difference also occurs due to variations in the flow rate of the liquid refrigerant.
  • the point P3 in the first refrigerant passage 42a immediately after the refrigerant flows in becomes a gas-liquid two-phase region
  • the point P1 in the fourth refrigerant passage 42d just before the refrigerant flows out becomes a superheated steam region.
  • Such a difference in the state of the refrigerant may cause a temperature difference between the point P3 and the point P1.
  • the refrigerant flow rate is relatively fast, there is a possibility that the amount of liquid refrigerant flowing through the passage may increase.
  • the flow rate of the liquid refrigerant at the point P6 in the fourth refrigerant passage 42d is the same as that in the third refrigerant passage 42c. It becomes larger than the flow rate of the liquid refrigerant at the point P5.
  • a partition plate 36 extending from the bottom surface of the coolant tank 26 to the top plate 28 is erected in the coolant passage 30 in FIG.
  • the partition plate 36 extends from the right side wall of the coolant tank 26 across the plurality of refrigerant passages 42 toward the left side to a position not reaching the left side wall of the coolant tank 26.
  • the partition plate 36 partitions the lower passage 46 and also partitions the upper passage 44 in the same manner. That is, the interior of the upper passage 44 and the lower passage 46 is partitioned by the partition plate 36.
  • the plurality of refrigerant passages 42 are provided so as to penetrate the partition plate 36.
  • the inside of the coolant passage 30 (the upper passage 44 and the lower passage 46) is partitioned by the partition plate 36 into a space on the first coolant pipe 22a side and a space on the second coolant pipe 22b side. These spaces are connected on the left side of the coolant tank 26. Therefore, a flow path partitioned by the partition plate 36 is formed inside the coolant passage 30.
  • the coolant flows from the first coolant pipe 22a to the left side, then to the rear side, and then flows to the right side to reach the second coolant pipe 22b.
  • the second coolant pipe 22b is provided in the coolant tank 26 on the opposite side of the flow path from the first coolant pipe 22a.
  • the coolant flows into the upper passage 44 and the lower passage 46 from the first coolant pipe 22a, flows through the above-described flow paths, and flows out of the upper passage 44 and the lower passage 46 from the second coolant pipe 22b. As described above, the coolant mainly flows in the left-right direction of the coolant tank 26.
  • FIG. 3 (c) corresponds to a combination of FIG. 3 (a) and FIG. 3 (b).
  • FIG. 4 is a cross-sectional view taken along line C-C ′ of FIG.
  • the coolant flows through the coolant passage 30 in a direction orthogonal to the coolant passage 42. Therefore, the variation in temperature of the refrigerant passage 42 is suppressed by the coolant, and further, the temperature difference between the inlet side and the outlet side of the refrigerant passage 42 is suppressed by the U-turn of the coolant.
  • the amount of heat transfer in the portion of the refrigerant passage 42 on the cooling surface 34a increases, and the amount of heat transfer in the portion of the upper passage 44 on the cooling surface 34a decreases.
  • FIGS a structure for reducing such a difference in the amount of heat transfer will be described with reference to FIGS.
  • FIG. 5 (a)-(b) show another internal structure of the coolant tank 26.
  • FIG. FIG. 5A is shown in the same manner as FIG.
  • FIG. 5B is a cross-sectional view taken along the line D-D ′ of FIG.
  • a plurality of protrusions 48 are provided on the inner bottom surface 34 b of the cooling liquid tank 26.
  • a portion of the inner bottom surface 34 b inside the coolant passage 30, particularly the lower passage 46, that does not face the plurality of refrigerant passages 42, that is, a portion that faces the plurality of upper passages 44, is arranged in the front-rear direction. Extending from the first protrusion 48a to the seventh protrusion 48g are provided.
  • the first projecting portion 48a to the seventh projecting portion 48g are collectively referred to as the projecting portion 48, and are ribs projecting upward.
  • the flow of the coolant in the upper passage 44 is increased by changing the coolant flow upward by the protrusions 48.
  • the cooling effect in the upper passage 44 is improved, and temperature variations in the plurality of refrigerant passages 42 are suppressed. Furthermore, by suppressing the variation in temperature, heat diffusion by the coolant and heat exchange with the battery module 10 are promoted. Here, the amount of heat transfer in the portion of the refrigerant passage 42 on the cooling surface 34a increases, and the amount of heat transfer in the portion of the upper passage 44 on the cooling surface 34a becomes medium.
  • the number of the protrusion parts 48 is set to "7", it is not limited to it.
  • FIGS. 6A to 6C show still another internal structure of the coolant tank 26.
  • FIGS. 6A to 6C are shown in the same manner as FIGS. 3A to 3C.
  • the installation positions of the coolant pipe 22 and the refrigerant pipe 24 are changed.
  • four refrigerant passages 42 extend in the front-rear direction.
  • the first refrigerant header 40a connected to the rear end of the four refrigerant passages 42 extends in the left-right direction.
  • the second refrigerant header 40b connected to the front end of the four refrigerant passages 42 extends in the left-right direction.
  • the first refrigerant pipe 24a is connected to the first refrigerant header 40a
  • the second refrigerant pipe 24b is connected to the second refrigerant header 40b.
  • the refrigerant flows into the first refrigerant header 40a through the first refrigerant pipe 24a.
  • the refrigerant branches from the first refrigerant header 40a to the first refrigerant passage 42a to the fourth refrigerant passage 42d, flows through the first refrigerant passage 42a to the fourth refrigerant passage 42d, and then merges in the second refrigerant header 40b. To do.
  • the refrigerant flows out from the second refrigerant header 40b through the second refrigerant pipe 24b.
  • a temperature difference is generated between the gas-liquid two-phase region at the saturation temperature of the refrigerant and the superheated vapor region where the refrigerant is vaporized, as well as the refrigerant in each refrigerant passage 42.
  • the coolant passage 30 there is a flow path that flows out from the second coolant pipe 22b after the coolant flows in from the first coolant pipe 22a and flows to the rear side. It is formed.
  • the coolant flows from the first coolant pipe 22a into the upper passage 44 and the lower passage 46, flows through the flow passages, and flows out of the upper passage 44 and the lower passage 46 from the second refrigerant pipe 24b. In this way, the coolant flows in the front-rear direction.
  • FIG. 6 (c) corresponds to the case where FIG. 6 (a) and FIG. 6 (b) are combined.
  • the coolant flows along the refrigerant passage 42 in the direction opposite to the refrigerant. Therefore, the variation in the temperature of the refrigerant passage 42 is suppressed by the coolant, and further, the temperature difference between the plurality of refrigerant passages 42 is suppressed by the mixing of the coolant by the coolant pump (WP: Water Pump).
  • WP Water Pump
  • FIGS. 6A to 6C as in FIGS. 5A to 5B, a plurality of refrigerant passages 42 in the coolant passage 30, particularly the inner bottom surface 34b in the lower passage 46, are provided.
  • One or more projecting portions 48 extending in the left-right direction may be provided as ribs on the portion facing the. Such a protrusion 48 makes it easier for the coolant to flow into the upper passage 44.
  • FIG. 7 is a block diagram showing the configuration of the battery temperature control system 100.
  • the battery temperature control system 100 of the present embodiment is a system that shares a vehicle air conditioning system (particularly a refrigerant circuit) with the battery temperature control device 20A that controls the temperature of the vehicle-mounted battery.
  • the battery temperature control system 100 includes a battery temperature control device 20 ⁇ / b> A, a compressor 60, a condenser 62, a first expansion valve 64, an HVAC (Heating, Ventilation, and Air Conditioning) 66, a second expansion valve 68, a WP 70, and a heater 72.
  • the battery module 10 of Fig.1 (a) is abbreviate
  • the compressor 60, the condenser 62, the first expansion valve 64, the HVAC 66, and the second expansion valve 68 in FIG. 7 are included in the refrigerant circuit, and the WP 70 and the heater 72 are included in the coolant circuit.
  • the compressor 60, the condenser 62, the HVAC 66, and the second expansion valve 68 constitute a refrigerant circuit of the vehicle air conditioning system.
  • the refrigerant is supplied to the battery temperature adjustment device 20A, and the battery temperature adjustment device 20A is cooled by the heat of vaporization of the refrigerant.
  • the battery temperature control device 20A corresponds to the above-described cooling device 20 when the battery is cooled.
  • the refrigerant circuit supplies the refrigerant to the HVAC 66 and cools the air blown into the vehicle interior by the heat of vaporization of the refrigerant.
  • the compressor 60 pressurizes the vaporized refrigerant and supplies it to the capacitor 62.
  • the condenser 62 cools and liquefies the refrigerant pressurized by the compressor 60 and supplies it to the first expansion valve 64 or the second expansion valve 68.
  • the first expansion valve 64 depressurizes the liquefied refrigerant and supplies it to the battery temperature adjustment device 20A.
  • the supplied refrigerant is vaporized in the battery temperature control device 20A.
  • the vaporized refrigerant is supplied to the compressor 60 via the first expansion valve 64.
  • the second expansion valve 68 depressurizes the liquefied refrigerant and supplies it to the HVAC 66.
  • the supplied refrigerant is vaporized in the HVAC 66.
  • the vaporized refrigerant is supplied to the compressor 60 via the second expansion valve 68.
  • the first expansion valve 64 and the second expansion valve 68 are temperature type expansion valves that are control valves capable of controlling the flow rate of the refrigerant according to the refrigerant temperature.
  • the coolant is supplied to the battery temperature control device 20A, heat is exchanged between the refrigerant in the battery temperature control device 20A and the battery module 10 via the coolant when the battery is cooled, and when the battery is warmed. Heat exchange is performed between the heated coolant in the battery temperature control device 20 ⁇ / b> A and the battery module 10.
  • the WP 70 circulates the coolant in the coolant circuit.
  • the heater 72 heats the coolant when the vehicle battery is charged when the temperature is low or when power is supplied to the drive motor.
  • the arrangement of the plurality of battery modules 10 in the cooling device 20 will be described.
  • adjacent battery modules 10 are not closely arranged and are arranged at intervals.
  • the heat transfer amount in the refrigerant passage 42 is larger than the heat transfer amount in the upper passage 44 of the coolant. Therefore, the cooling efficiency increases as the contact area between the refrigerant passage 42 portion and the battery module 10 through the top plate 28 (the area of the portion where the refrigerant passage 42 overlaps the battery module 10 when viewed from above the cooling device 20) is increased. Will improve.
  • the cooling efficiency improves as the area of the portion of the refrigerant passage 42 that does not contact the battery module 10 (the area of the portion where the refrigerant passage 42 does not overlap the battery module 10 when viewed from the upper side of the cooling device 20) is reduced. Equivalent to.
  • FIGS. 8A to 8C are top views showing the arrangement of the battery module 10 in the battery temperature control system 100.
  • FIG. FIG. 8A is a top view showing the cooling device 20 when the battery module 10 is not arranged.
  • the cooling device 20 has a rectangular shape that is longer in the front-rear direction than in the left-right direction.
  • a plurality of refrigerant passages 42 extending in the front-rear direction are arranged while being separated from each other in the left-right direction.
  • FIG. 8B shows a case where four battery modules 10 are arranged on the cooling device 20 of FIG.
  • the short side is directed in the left-right direction while the long side of the battery module 10 is directed in the front-rear direction.
  • two battery modules 10 are arranged in the front-rear direction, and two battery modules 10 are arranged in the left-right direction.
  • the direction in which each refrigerant passage 42 extends is the long side direction of the battery module 10.
  • each refrigerant passage 42 extends is the direction of the short side of the battery module 10.
  • the coolant passage is in contact with the coolant passage and the cooling surface side of the casing of the cooling device, so that the heat of the battery module is transferred to the low temperature portion of the coolant passage and the high temperature portion of the coolant passage.
  • This heat is transferred to the low temperature part of the refrigerant passage, so that in-plane variation in battery temperature during battery cooling can be suppressed.
  • the width of the upper passage is made larger than the width of the refrigerant passage, variations in temperature can be suppressed by the coolant flowing through the upper passage.
  • the cooling liquid flows so as to be orthogonal to the direction in which the refrigerant flows, variations in temperature between the refrigerant passages can be suppressed.
  • the flow rate of the cooling liquid in the upper passage can be increased.
  • the flow rate of the coolant in the upper passage increases, the amount of heat transfer in the upper passage can be increased.
  • the flow directions of the refrigerant and the coolant are orthogonal, the temperature variation caused by the deviation of the refrigerant flow rate between the refrigerant passages can be made uniform by the coolant flowing across the refrigerant passages.
  • variation in the temperature resulting from the deviation of the liquid refrigerant in a refrigerant path and heating steam can be suppressed by promoting mixing of a cooling liquid in WP.
  • the coolant flows in the direction in which the refrigerant flows, the temperature variation in the refrigerant passage can be suppressed. Further, since the flow of the cooling liquid varies depending on the protrusion, the cooling liquid can be flowed in directions other than the direction in which the refrigerant flows. In addition, since the coolant flows in a direction other than the direction in which the refrigerant flows, the temperature variation between the refrigerant passages can be suppressed. In addition, since the refrigerant and the coolant flow in the same direction, the liquid refrigerant in the refrigerant passage and the temperature variation caused by the heated steam can be made uniform by the coolant flowing around the refrigerant passage.
  • the temperature variation resulting from the deviation of the refrigerant flow rate between the refrigerant passages can be suppressed by promoting the mixing of the cooling liquid by the cooling liquid stirring rib or WP.
  • the battery module and the cooling device are provided, in the cooling device that cools the battery module, in-plane variation of the battery temperature during battery cooling can be suppressed.
  • a cooling device is a cooling device that cools an in-vehicle battery, and is provided in a housing, a cooling fluid passage that allows a coolant to flow, and is provided in the housing.
  • the plurality of refrigerant passages are arranged apart from the adjacent refrigerant passages in a second direction different from the first direction, and the coolant passage is provided in contact with the housing between the adjacent refrigerant passages, A plurality of first coolant passages extending in the first direction are included.
  • the coolant passage is in contact with the coolant passage and the cooling surface side of the casing of the cooling device, so that the heat of the in-vehicle battery is transferred to the low temperature portion of the coolant passage and the heat of the high temperature portion of the coolant passage. Can be transferred to the low temperature portion of the refrigerant passage to suppress in-plane variations in battery temperature during battery cooling.
  • the distance between adjacent refrigerant passages is larger than the width of the refrigerant passage.
  • the distance between the adjacent refrigerant passages is made larger than the width of the refrigerant passage, variation in temperature can be suppressed by the coolant flowing between the adjacent refrigerant passages.
  • the coolant passage is provided on the second surface side opposite to the first surface of the housing, and is joined to the housing, and the second coolant passage through which the coolant can move between the first coolant passage is provided. May be included.
  • the coolant flows in the second direction. In this case, since the coolant flows so as to cross the direction in which the refrigerant flows, the temperature variation between the refrigerant passages can be suppressed.
  • the second coolant passage may be provided with a protrusion that is joined to the housing on the second surface side and protrudes toward the first coolant passage. In this case, since the flow of the cooling liquid is changed by the protrusion, the flow rate of the cooling liquid between the adjacent refrigerant passages can be increased.
  • the coolant passage is provided on the second surface side opposite to the first surface of the housing, and is joined to the housing, and the second coolant passage through which the coolant can move between the first coolant passage is provided. May be included.
  • the coolant flows in the first direction. In this case, since the coolant flows in the direction in which the refrigerant flows, the temperature variation in the refrigerant passage can be suppressed.
  • the second coolant passage may be provided with a protrusion that is joined to the housing on the second surface side and protrudes toward the first coolant passage. In this case, since the flow of the cooling liquid is changed by the protrusion, the temperature variation between the refrigerant passages can be suppressed.
  • a cooling device and a plurality of in-vehicle batteries installed on the first surface of the cooling device may be provided.
  • the cooling device that cools the in-vehicle battery in-plane variation in battery temperature during battery cooling can be suppressed.
  • Cooling device 20 Cooling device, 22 Coolant pipe, 24 Coolant pipe, 26 Coolant tank, 28 Top plate, 30 Coolant passage, 34a Cooling surface, 34b Inner bottom surface, 36 Partition plate, 38 Opening, 40 Refrigerant header, 42 refrigerant passage, 44 upper passage, 46 lower passage, 100 battery temperature control system.
  • in-plane variation in battery temperature during battery cooling can be suppressed.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un dispositif de refroidissement 20 qui refroidit une batterie embarquée. Un passage de liquide de refroidissement 30 est installé à l'intérieur d'un boîtier du dispositif de refroidissement 20, et fait circuler le liquide de refroidissement. Un premier passage de liquide de refroidissement 42a à un quatrième passage de liquide de refroidissement 42d sont disposés dans le boîtier du dispositif de refroidissement 20, faisant circuler le liquide de refroidissement, sont prévus pour être reliés au boîtier sur un premier côté de surface du boîtier, sur lequel une batterie embarquée est montée, et s'étendent dans une première direction. Le premier passage de liquide de refroidissement 42a au quatrième passage de liquide de refroidissement 42d sont alignés dans une seconde direction, qui est différente de la première direction, pour être espacés des passages de liquide de refroidissement adjacents. Le passage de liquide de refroidissement 30 est prévu pour être relié au boîtier entre des passages de liquide de refroidissement adjacents, et comprend un premier passage supérieur 44a à un troisième passage supérieur 44c.
PCT/JP2019/000301 2018-02-06 2019-01-09 Dispositif de refroidissement et système de régulation de température de batterie WO2019155810A1 (fr)

Priority Applications (2)

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JP2019570625A JP6975943B2 (ja) 2018-02-06 2019-01-09 冷却装置および電池温調システム
CN201980003813.7A CN111033877B (zh) 2018-02-06 2019-01-09 冷却装置及电池调温***

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JP2021160567A (ja) * 2020-03-31 2021-10-11 パナソニックＩｐマネジメント株式会社 車両および温度調整システム
JP2022055246A (ja) * 2020-09-28 2022-04-07 パナソニックＩｐマネジメント株式会社 車両、及び、電池パック
JP2022055244A (ja) * 2020-09-28 2022-04-07 パナソニックＩｐマネジメント株式会社 車両、及び、電池パック
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WO2021192569A1 (fr) * 2020-03-27 2021-09-30 パナソニックＩｐマネジメント株式会社 Véhicule, plaque d'échangeur de chaleur et bloc-batterie
JP7065331B2 (ja) 2020-03-31 2022-05-12 パナソニックＩｐマネジメント株式会社 車両および温度調整システム
JP2021160566A (ja) * 2020-03-31 2021-10-11 パナソニックＩｐマネジメント株式会社 車両および温度調整システム
JP2021160565A (ja) * 2020-03-31 2021-10-11 パナソニックＩｐマネジメント株式会社 車両および温度調整システム
JP2021160567A (ja) * 2020-03-31 2021-10-11 パナソニックＩｐマネジメント株式会社 車両および温度調整システム
JP7365620B2 (ja) 2020-03-31 2023-10-20 パナソニックＩｐマネジメント株式会社 車両および温度調整システム
JP7065332B2 (ja) 2020-03-31 2022-05-12 パナソニックＩｐマネジメント株式会社 車両および温度調整システム
CN111490311B (zh) * 2020-04-21 2023-08-25 上海加冷松芝汽车空调股份有限公司 一种集成式换热板及车用电池热管理***
CN111490311A (zh) * 2020-04-21 2020-08-04 上海加冷松芝汽车空调股份有限公司 一种集成式换热板及车用电池热管理***
JP2022055245A (ja) * 2020-09-28 2022-04-07 パナソニックＩｐマネジメント株式会社 車両、及び、電池パック
JP2022055244A (ja) * 2020-09-28 2022-04-07 パナソニックＩｐマネジメント株式会社 車両、及び、電池パック
JP2022055246A (ja) * 2020-09-28 2022-04-07 パナソニックＩｐマネジメント株式会社 車両、及び、電池パック
JP7426609B2 (ja) 2020-09-28 2024-02-02 パナソニックＩｐマネジメント株式会社 車両、及び、電池パック
JP7426610B2 (ja) 2020-09-28 2024-02-02 パナソニックＩｐマネジメント株式会社 車両、及び、電池パック
JP7478922B2 (ja) 2020-09-28 2024-05-08 パナソニックオートモーティブシステムズ株式会社 車両、及び、電池パック
JP2022061770A (ja) * 2020-10-07 2022-04-19 パナソニックＩｐマネジメント株式会社 車両、及び、電池パック
JP7507538B2 (ja) 2020-10-07 2024-06-28 パナソニックオートモーティブシステムズ株式会社 車両、及び、電池パック
JP2022129697A (ja) * 2021-02-25 2022-09-06 いすゞ自動車株式会社 バッテリー装置
JP7384183B2 (ja) 2021-02-25 2023-11-21 いすゞ自動車株式会社 バッテリー装置

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