WO2022217980A1 - Module d'éléments de batterie et automobile électrique - Google Patents

Module d'éléments de batterie et automobile électrique Download PDF

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Publication number
WO2022217980A1
WO2022217980A1 PCT/CN2021/143885 CN2021143885W WO2022217980A1 WO 2022217980 A1 WO2022217980 A1 WO 2022217980A1 CN 2021143885 W CN2021143885 W CN 2021143885W WO 2022217980 A1 WO2022217980 A1 WO 2022217980A1
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WO
WIPO (PCT)
Prior art keywords
circulation space
cooling chamber
space
cooling
box body
Prior art date
Application number
PCT/CN2021/143885
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English (en)
Chinese (zh)
Inventor
陈斌斌
席兵荣
程志刚
花黄伟
王明旺
王华文
Original Assignee
欣旺达电动汽车电池有限公司
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Application filed by 欣旺达电动汽车电池有限公司 filed Critical 欣旺达电动汽车电池有限公司
Publication of WO2022217980A1 publication Critical patent/WO2022217980A1/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
    • 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
    • H01M10/6567—Liquids
    • 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 application relates to the technical field of cell cooling, and in particular, to a cell module and an electric vehicle.
  • Existing cell modules usually include components such as cells and cooling devices.
  • the cooling medium usually directly contacts the cells or various electrical components through the cooling device. , so that condensation will occur inside the cell module, which will lead to insulation failure of the cell module.
  • the present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a cell module capable of avoiding insulation failure of the cell module.
  • the present application also proposes an electric vehicle having the above-mentioned battery cell module.
  • the battery cell module includes a plurality of square cells; a box body, the box body defines a main cooling chamber, and the box body is further provided with a communication
  • the cooling medium inlet and cooling medium outlet of the main cooling chamber the box body is provided with at least one first mounting surface on one surface, a plurality of the square cells are arranged on the first mounting surface, and a plurality of the
  • the bottom surface of the square electric core is in contact with the first installation surface, and a second installation surface is also provided on both sides of the first installation surface along the arrangement direction of the plurality of square electric cores;
  • the side box is provided with a second installation surface.
  • On the second mounting surface the surface of each side box facing the side of the first mounting surface is in contact with the side surface of the square cell, and each side box defines a side cooling chamber,
  • the side cooling chamber is in bidirectional communication with the main cooling chamber.
  • the cooling medium can enter the side cooling chamber through the main cooling chamber, return to the main cooling chamber from the side cooling chamber, and finally leave the box through the cooling medium outlet. Since the bottom surface of the square cell is in contact with the first mounting surface, and the two sides are in contact with the surface of the side case, when the cooling medium flows in the main cooling chamber and the side cooling chamber, the bottom surface and the two sides of the square cell are in contact with each other. Part of the heat can be conducted into the cooling medium and taken out of the box by the cooling medium.
  • the cooling medium is always located in the main cooling chamber and the side cooling chamber when flowing in the cell module, without contacting Therefore, it can achieve the effect of completing the heat dissipation of the battery core and avoiding the insulation failure of the battery core without contacting the cooling medium.
  • the cell module includes a first partition plate provided with a cooling medium inlet, and along the thickness direction of the box, the first partition plate separates the main cooling cavity
  • the chamber is divided into a first circulation space and a second circulation space, the first circulation space is located at the bottom of the first installation surface, the cooling medium inlet communicates with the first circulation space and the external environment, and the first circulation space is
  • the plate and the inner wall of the box body jointly define a first circulation port, the first circulation port is located at one end of the box body, the cooling medium inlet is located at the other end of the box body, and the first circulation port is located at the other end of the box body. The port communicates with the first circulation space and the second circulation space.
  • the cell module further includes a guide row, the guide row is disposed in the main cooling chamber and the side cooling chamber, and connects the main cooling chamber
  • the chamber is equally spaced into a plurality of main cooling channels
  • the side cooling chambers are equally spaced into a plurality of side cooling channels.
  • the box body includes a limit protrusion and a bottom plate, the limit protrusion protrudes from the bottom plate, and along the width direction of the box body, the limit protrusion The length is equal to the length of the square cell, the first mounting surface is disposed on the surface of the limiting protrusion, and the side case is pressed against the limiting protrusion.
  • the cell module further includes an enclosing frame, and the inner wall of the enclosing frame is connected to the side surface of the box body to define a second accommodating space together with the box body.
  • the side box is accommodated in the second accommodating space, and the enclosing frame is provided with a third accommodating space, a first through hole and a second through hole, and the first through hole communicates with the third accommodating space and the external environment , the second through hole and the cooling medium outlet at least partially overlap.
  • the cell module further includes a plurality of second partitions, and the plurality of second partitions divide the second circulation space along the width direction of the box into A third circulation space and a fourth circulation space, the fourth circulation space communicates with the side cooling chamber and is located at the bottom of the second installation surface, and the second partition and the inner wall of the box form a second A circulation port, the second circulation port is located at one end of the box body, and the first circulation port is located at the other end of the box body.
  • the cell module includes at least three side boxes, and two adjacent side cooling chambers are commonly communicated with the same fourth circulation space.
  • the cell module further includes a third partition, and the third partition divides the fourth circulation space into a fifth partition along the length direction of the box body A circulation space and a sixth circulation space, the sixth circulation space is located on the side where the cooling medium outlet is located, the side box is provided with a first transfer port and a second transfer port, and the first transfer port communicates with the The fifth circulation space and the side cooling chamber, the second transfer port communicates with the sixth circulation space and the side cooling chamber, and the cooling medium outlet communicates with the sixth circulation space.
  • one end of the second partition plate extends toward the first circulation space to form a fourth partition plate, and along the width direction of the box, the fourth partition plate separates the first partition plate
  • a circulation space is divided into a cooling space and a circulation space, the cooling space is located at the bottom of the first installation surface, the circulation space is located at the bottom of the second installation surface, and the first circulation port communicates with the cooling space and the second circulation space.
  • the electric vehicle includes the battery cell module as described in the embodiment of the first aspect.
  • the cooling medium can enter the side cooling chamber through the main cooling chamber, and then pass through the side cooling chamber.
  • the side cooling chamber returns to the main cooling chamber and finally leaves the tank via the cooling medium outlet. Since the bottom surface of the square cell is in contact with the first mounting surface, and the two sides are in contact with the surface of the side case, when the cooling medium flows in the main cooling chamber and the side cooling chamber, the bottom surface and the two sides of the square cell are in contact with each other. Part of the heat can be conducted into the cooling medium and taken out of the box by the cooling medium.
  • the cooling medium is always located in the main cooling chamber and the side cooling chamber when flowing in the cell module, without contacting Therefore, it is possible to achieve the effect of completing the heat dissipation of the battery core and avoiding the insulation failure of the battery core without contacting the cooling medium.
  • FIG. 1 is a schematic structural diagram of a cell module according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a cell module according to another embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a cell module according to another embodiment of the present application.
  • FIG. 4 is a partial cross-sectional view of a box of a cell module according to an embodiment of the present application.
  • FIG. 5 is a partial cross-sectional view of a side box of a cell module according to an embodiment of the present application.
  • FIG. 6 is a partial cross-sectional view of a box body of a cell module according to another embodiment of the present application.
  • FIG. 7 is a partial cross-sectional view of a box of a cell module according to another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a cell module according to another embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a battery module according to another embodiment of the present application.
  • Square cell 10 Square cell 10 , first accommodating space 20 , second accommodating space 30 , third accommodating space 40 , cooling space 50 , circulation space 60 , cooling medium discharge mechanism 70 , cooling medium inflow mechanism 80 ;
  • Box 100 limiting protrusion 101, bottom plate 102, cooling medium outlet 110, cooling medium inlet 120, third through hole 130, fourth through hole 140, first circulation space 151, second circulation space 152, third circulation space 153 , fourth circulation space 154 , fifth circulation space 155 , sixth circulation space 156 , first circulation port 161 , second circulation port 162 , first partition plate 171 , second partition plate 172 , third partition plate 173 , the fourth partition 174, the main cooling chamber 180, the guide row 190, the first installation surface 191, the second installation surface 192, the main cooling channel 193, the side box 200, the first transfer port 210, the second transfer port 220 , a side cooling chamber 230 , a side cooling channel 231 , a surrounding frame 300 , a first through hole 310 , and a second through hole 320 .
  • the thickness direction of the box body 100 in the present application is the up-down direction in FIG. 1
  • the longitudinal direction is the front-rear direction in FIG. 1
  • the width direction is the left-right direction in FIG. 1 .
  • the cell module includes: a plurality of square cells 10 , a box body 100 and a side box 200 , the box body 100 defines a main cooling chamber 180 , and the box body 100 also A cooling medium inlet 120 and a cooling medium outlet 110 that communicate with the main cooling chamber 180 are provided.
  • the box 100 is provided with at least one first mounting surface 191 on one surface, and a plurality of square cells 10 are arranged on the first mounting surface 191.
  • the bottom surfaces of the plurality of square cells 10 are in contact with the first mounting surface 191 , and second mounting surfaces 192 are further provided on both sides of the first mounting surface 191 along the arrangement direction of the plurality of square cells 10 .
  • the side boxes 200 are disposed on the second mounting surface, and the surface of each side box 200 facing the side of the first mounting surface 191 is in contact and connected with the side surface of the square cell 10 , and each side box 200 defines a side cooling chamber 230 .
  • the cooling chamber 30 is in bidirectional communication with the main cooling chamber 180 .
  • the box body 100 and the side box 200 are both plate-shaped structures, a plurality of square cells 10 are arranged on the first mounting surface 191 of the box body 100 along the front-rear direction, and the square cells 10
  • the bottom surface is attached to the first installation surface 191 of the box body 100 .
  • the second installation surface 192 is disposed on the left and right sides of the first installation surface 191
  • the bottom surface of the side case 200 is attached to the second installation surface 192
  • the left and right sides of the square cell 10 are attached to the side case 200 . side.
  • the bottom of the box body 100 is provided with a cooling medium inlet 120 , and the cooling medium can enter the main cooling chamber 180 from the cooling medium inlet 120 .
  • the upper surface of the box body 100 is further provided with a plurality of third through holes 130 and fourth through holes 140 , and the second transfer port 220 is located on the box body 100 near the cooling One end of the medium outlet 110 .
  • the third through hole 130 at least partially coincides with the first transfer port 210
  • the fourth through hole 140 at least partially coincides with the second transfer port 220 , so that the cooling medium can
  • the main cooling chamber 180 enters the side cooling chamber 230 through the third through hole 130, and then returns to the main cooling chamber 180 from the back to the front through the fourth through hole 140 in the side cooling chamber 230 to realize bidirectional communicate and eventually exit the main cooling chamber 180 from the cooling medium outlet 110 .
  • the battery core module in this embodiment can realize the heat dissipation of the square battery core 10 and avoid the Insulation failure due to condensation on the square cell 10 .
  • the cell module includes a first partition 171 provided with a cooling medium inlet 120 .
  • the first partition 171 divides the main cooling chamber 180 into a second partition.
  • a circulation space 151 and a second circulation space 152 , and the second circulation space 152 is located under the cold mounting surface 191 of the cell.
  • the first circulation space 151 is located on the upper layer of the box body 100
  • the second circulation space 152 is located on the lower layer of the box body 100 .
  • the cooling medium inlet 120 communicates with the first circulation space 151 and the external environment.
  • the first partition 171 and the inner wall of the box body 100 jointly define a first flow port 161 , the first flow port 161 is located at the front end of the box body 100 , the cooling medium inlet 120 is located at the rear end of the box body 100 , and the first flow port 161
  • the first circulation space 151 and the second circulation space 152 are communicated. Therefore, when the cooling medium enters the box 100 from the outside, it can fill the first circulation space 151 first, and then enter the second circulation space 152 through the first circulation port 161 from the bottom to the top. 171 is in contact with the inner wall of the box 100.
  • the overall flow direction of the cooling medium when entering the second circulation space 152 from the first circulation space 151 is roughly the same. , so that all parts of the square cell 10 can maintain consistent cooling efficiency, thereby ensuring the uniformity of temperature when the square cell 10 is cooled.
  • the cell module further includes a guide row 190 , and the guide row 190 is disposed in the main cooling chamber 180 and the side cooling chamber 230 , and divides the main cooling chamber 180 into a plurality of main cooling chambers equidistantly.
  • the cooling channel 193 is equally spaced and the side cooling chamber 230 is divided into a plurality of side cooling channels 231 .
  • the guide row 190 divides the main cooling chamber 180 into a plurality of main cooling channels 193 , whereby the cooling medium can be uniformly circulated in the main cooling chamber 180 , and the side boxes 200 are also provided There are diversion rows 190, so that the side cooling chamber 230 is divided into a plurality of side cooling channels 231 at equal intervals, so that the flow velocity of the cooling medium in the side box 200 is equal, thereby avoiding the cooling medium in the main cooling chamber.
  • the flow velocity is not uniform at various places, resulting in inconsistent cooling effects at the bottom or side of each square cell 10 , so as to further improve the temperature uniformity of the square cell 10 .
  • the distance between the side cases 200 forming the first accommodating space 20 generally needs to be equal to the left-right direction of the square cell 10 . length.
  • the side case 200 needs to be connected to the case body 100 first. Therefore, in order to prevent the distance between the side boxes 200 from being larger or smaller than the length of the square cell 10 in the left-right direction, referring to FIG. 2 and FIG.
  • the box body 100 in this embodiment includes a limiting protrusion 101 and a bottom plate 102 , the limiting protrusion 101 protrudes from the bottom plate 102 , the first mounting surface 191 is disposed on the upper surface of the limiting protrusion 101 , and the second mounting surface 192 is disposed on the upper surface of the bottom plate 102 .
  • the length of the limiting protrusion 101 is equal to the length of the square cell 10 along the width direction of the box body 100 , after the side box 200 is pressed against the limiting protrusion 101 , the length of the first accommodating space 20 in the left-right direction It is equal to the length of the square cell 10 , so the square cell 10 can be directly inserted into the first accommodating space 20 , and there is no need to manually adjust the position between the side box 200 and the square cell 10 , thereby improving the installation efficiency of the cell module.
  • the cell module in this embodiment further includes an enclosing frame 300 , and the inner wall of the enclosing frame 300 is connected to the side of the box body 100 to wrap the box body 100 , and together with the box body 100 define a second Accommodating space 30.
  • the box body 100 replaces the cooling device in the traditional cell module, and forms a box body structure together with the surrounding frame 300, the cooling device of the cell module and the bottom plate of the cell module are integrated into a The integrated effect reduces the volume of the battery module, thereby improving the energy density of the battery module.
  • the enclosure frame 300 is provided with a third accommodation space 40, a first through hole 310 and a second through hole 320, and the first through hole 310 communicates with the first through hole 310.
  • the third accommodating space 40 and the external environment, the second through hole 320 and the cooling medium outlet 110 at least partially overlap. Therefore, when the cell module needs to be connected to the cooling medium discharge mechanism 70 , the plurality of cooling mediums can first pass through the different cooling medium outlets 110 respectively, enter the third accommodating space 40 for confluence, and then pass through the second through holes 320 together.
  • the cooling medium is discharged through the cooling medium discharge mechanism 70, thereby avoiding the need to provide the cooling medium discharge mechanism 70 at each cooling medium outlet 110, thereby reducing the exhaust cost of the cell module.
  • the cooling medium can be oil, water or wind, etc.
  • the cell module can also include a top cover (not shown in the figure), and the top cover can cover the upper end of the enclosing frame 300 , thereby sealing the second accommodating space 30 , thereby isolating the square cell 10 from the external environment and avoiding square The cell 10 is corroded.
  • the cell module in this embodiment further includes a plurality of second partitions 172 .
  • the plurality of second partitions 172 divide the second circulation space 152 into The third circulation space 153 and the fourth circulation space 154, the first transfer port 210 and the second transfer port 220 are all communicated with the fourth circulation space 154, so that the fourth circulation space 154 is communicated with the side cooling chamber 230, and the second partition
  • the plate 172 and the inner wall of the box body 100 form a second flow port 162 .
  • the cooling medium when the cooling medium enters the second circulation space 152 from bottom to top, it does not flow to the fourth circulation space 154 on the left and right sides, but passes through the third circulation space 153 from front to back to achieve
  • the heat dissipation from the bottom of the square cell 10 passes through the second flow port 162, enters the fourth flow space 154 toward the left and right sides, and finally enters the side cooling chamber 230 from the fourth flow space 154. Therefore, the flow rate of the cooling medium everywhere is Uniform, ensuring the uniform temperature of the cell module.
  • the cell module includes at least three side boxes 200 , and two adjacent side cooling chambers 230 are commonly communicated with the same fourth circulation space 154 .
  • the cell module is provided with two groups of square cells 10, and each group of square cells 10 needs to be cooled on the bottom and two sides.
  • the cell module in this embodiment is only designed with a fourth circulation space 154 at the position between the two groups of square cells 10, and the fourth circulation space here is
  • the space 154 communicates with the side cooling chambers 230 of the two side boxes 200 , thereby reducing the space of the cell module occupied by the fourth circulation space 154 , thereby improving the energy density of the cell module.
  • the cell module in this embodiment further includes a third partition 173, and the third partition 173 is in the direction from the back to the front.
  • the fourth circulation space 154 is divided into a fifth circulation space 155 and a sixth circulation space 156 along the length direction of the box body 100 beyond the first transfer port 210, and the sixth circulation space 156 is located where the cooling medium outlet 110 is located. side.
  • the first transfer port 210 communicates with the fifth circulation space 155 and the side cooling chamber 230
  • the second transfer port 220 communicates with the sixth circulation space 156 and the side cooling chamber 230
  • the cooling medium outlet 110 communicates with the sixth circulation space 156 . Therefore, when the cooling medium flows in the fourth circulation space 154 , it can be blocked by the third partition plate 173 , thereby preventing the cooling medium from directly flowing out of the casing 100 without passing through the side cooling chamber 230 .
  • the flow rate of the cooling medium in the fourth circulation space 154 is still greater than the flow rate of the cooling medium in the third circulation space 153 , resulting in The temperature of the square cells 10 is not uniform. Therefore, specifically, referring to FIGS. 6 and 7 , one end of the second partition plate 172 in this embodiment extends toward the first circulation space 151 to form a fourth partition plate 174 , and along the width direction of the box body 100 , the fourth partition plate 174
  • the first circulation space 151 is divided into a cooling space 50 and a circulation space 60 .
  • the cooling space 50 is located at the bottom of the first mounting surface 191
  • the circulation space 60 is located at the bottom of the second mounting surface 192 .
  • the first flow port 161 communicates with the cooling space 50 and the second flow space 152 .
  • the circulation space 60 is provided with the first flow port 161
  • the flow rate of the cooling medium in the circulation space 60 is greater than the flow rate of the cooling medium in the cooling space 50 , so that the cooling medium in the circulation space 60 has a negative effect on the third circulation space.
  • the heat dissipation effect of the cooling medium in the cooling space 153 is better than that of the cooling medium in the cooling space 50 for the cooling medium in the fourth circulation space 154 . In this way, the purpose of balancing the cooling efficiency of each cell module is achieved.
  • the battery cell module in the embodiment of the present application may include a cooling medium discharge mechanism 70 and a cooling medium inflow mechanism 80 .
  • the cooling medium discharge mechanism 70 is connected to the second through hole 310
  • the cooling medium inflow mechanism 80 is connected to the cooling medium inlet 120 .
  • the electric vehicle includes the battery cell module of the embodiment of the first aspect. Since the side cooling chamber 230 in the cell module of the electric vehicle is bidirectionally connected to the main cooling chamber 180 , the cooling medium can enter the side cooling chamber 230 through the main cooling chamber 180 , and then return from the side cooling chamber 230 to the side cooling chamber 230 . The main cooling chamber 180 finally leaves the box 100 through the cooling medium outlet 110 .
  • the bottom is attached to the first mounting surface 191 , and the two sides are against the side case 200 , when the cooling medium is in the main cooling chamber 180 and the side cooling chamber 230 , When flowing, part of the heat on the bottom surface and both sides of the square cell 10 can be conducted into the cooling medium and carried out of the box 100 by the cooling medium, so that the square cell 10 does not come into contact with the cooling medium while achieving For the purpose of dissipating heat to the square battery 10 , the insulation failure of the square battery 10 is avoided.

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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)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne un module d'éléments de batterie et une automobile électrique. Le module d'éléments de batterie comprend un corps de boîtier, une pluralité de boîtiers latéraux et une pluralité d'éléments de batterie. Le corps de boîtier comporte une première face de montage, une deuxième face de montage, une chambre principale de refroidissement et une évacuation de fluide de refroidissement ; chaque boîtier latéral comporte une chambre latérale de refroidissement ; les chambres latérales de refroidissement sont en communication bidirectionnelle avec la chambre principale de refroidissement ; les boîtiers latéraux sont agencés sur la deuxième face de montage ; et la face inférieure d'un élément de batterie carré est fixée à la première face de montage, et deux de ses faces latérales opposées butent contre des surfaces des boîtiers latéraux. Un fluide de refroidissement entre dans les chambres latérales de refroidissement par le biais de la chambre principale de refroidissement, puis retourne dans la chambre principale de refroidissement depuis les chambres latérales de refroidissement, et enfin quitte le corps de boîtier par le biais de l'évacuation de fluide de refroidissement. Le fond de l'élément de batterie est fixé à la première face de montage, et ses deux côtés butent contre des surfaces latérales des boîtiers latéraux, de sorte que, lorsque le fluide de refroidissement s'écoule dans le module d'éléments de batterie, le fluide de refroidissement n'entre pas en contact avec l'élément de batterie, et l'objectif de dissipation thermique pour l'élément de batterie carré peut être atteint, évitant ainsi le défaut d'isolation de l'élément de batterie.
PCT/CN2021/143885 2021-04-16 2021-12-31 Module d'éléments de batterie et automobile électrique WO2022217980A1 (fr)

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CN202110411228.XA CN113097636A (zh) 2021-04-16 2021-04-16 电芯模组及电动汽车

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CN113097636A (zh) * 2021-04-16 2021-07-09 欣旺达电动汽车电池有限公司 电芯模组及电动汽车

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