WO2024087801A1 - Plateau d'élément de batterie, module de batterie et véhicule - Google Patents

Plateau d'élément de batterie, module de batterie et véhicule Download PDF

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Publication number
WO2024087801A1
WO2024087801A1 PCT/CN2023/112191 CN2023112191W WO2024087801A1 WO 2024087801 A1 WO2024087801 A1 WO 2024087801A1 CN 2023112191 W CN2023112191 W CN 2023112191W WO 2024087801 A1 WO2024087801 A1 WO 2024087801A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure relief
heat dissipation
tray body
battery cell
channel
Prior art date
Application number
PCT/CN2023/112191
Other languages
English (en)
Chinese (zh)
Inventor
黄伟才
陈智伟
Original Assignee
湖北亿纬动力有限公司
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 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2024087801A1 publication Critical patent/WO2024087801A1/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
    • H01M10/656—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
    • 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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • 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 power batteries, and in particular to a battery cell tray, a battery module and a vehicle.
  • Power batteries are a type of power source that provides power for tools, mostly referring to storage batteries that provide power for new energy vehicles such as electric vehicles and electric trains.
  • Power batteries mainly include cylindrical cells, soft-pack cells, square hard-shell cells, etc.
  • the production process technology of cylindrical cells is relatively mature, the PACK (battery module) cost is relatively low, the battery product yield and battery pack consistency are relatively high, therefore, cylindrical cell battery modules are widely used in the field of electric vehicles.
  • Thermal runaway may not only cause the tray to deform due to heat, but also generate a large amount of high-temperature gas or even flames. If it is not cooled and depressurized in time, it is easy to cause fire or even explosion and other safety accidents.
  • the purpose of the present application is to provide a battery cell tray, a battery module and a vehicle, which solves the problem in the related art that the cylindrical battery module cannot quickly dissipate heat from the bottom of the battery cell in time during use, which easily causes thermal runaway and reduces the safety of the cylindrical battery module.
  • an embodiment of the present application provides a battery cell tray, comprising: a tray body, a partition assembly, a current collector, and a pressure relief member.
  • the top wall of the tray body is used to be fixedly connected to the bottom of a plurality of battery cells.
  • the heat dissipation and pressure relief chamber is provided in the tray body;
  • the partition assembly is provided in the heat dissipation and pressure relief chamber, and the partition assembly is used to separate the heat dissipation and pressure relief chamber into a heat dissipation channel and a pressure relief channel;
  • the current collector is provided on the tray body and communicated with the heat dissipation channel, and the current collector is used to inject coolant into the heat dissipation channel.
  • the pressure relief member is provided on the tray body and communicated with the pressure relief channel, and the pressure relief member is used to discharge the hot air in the pressure relief channel.
  • an embodiment of the present application further provides a battery module, the battery module comprising: a battery cell tray as described in any one of the above; and battery cells arranged on a tray body of the battery cell tray.
  • an embodiment of the present application further provides a vehicle, comprising: a box body; and a battery module as described above, disposed in the box body.
  • the present application sets a heat dissipation and pressure relief cavity in the tray body, and uses a partition component to separate the heat dissipation and pressure relief cavity into a heat dissipation channel and a pressure relief channel.
  • the current collector can inject coolant into the heat dissipation channel, and as the coolant flows, the bottom of the battery cell can be effectively dissipated to effectively slow down the continuous increase in the temperature at the bottom of the battery cell.
  • the hot air can enter the pressure relief component along the pressure relief channel, and the pressure relief component can guide the hot air out of the heat dissipation and pressure relief cavity, which can not only dissipate the heat at the bottom of the battery cell, but also reduce the pressure in the tray body.
  • the battery cell can be effectively dissipated and pressure relieved, reducing the possibility of thermal runaway of the battery cell during operation and improving the overall safety performance.
  • the present application can effectively dissipate heat and pressure at the bottom of the battery cell through the battery cell tray, thereby reducing the possibility of thermal runaway chain reaction in the battery module as a whole, and effectively improving the overall safety of the battery module.
  • the present application reduces the possibility of thermal runaway of the battery module as a whole, reduces the possibility of fire or even explosion during vehicle operation, reduces the possibility of safety accidents, and improves the overall safety performance of the vehicle.
  • FIG. 1 is a schematic diagram of the structure of a battery cell tray in some embodiments of the present application.
  • FIG. 2 is a cross-sectional view of a battery cell tray in some embodiments of the present application.
  • FIG. 3 is an enlarged view of portion A in the implementation shown in FIG. 2 .
  • FIG. 4 is a schematic diagram of an exploded structure of a battery cell tray in some embodiments of the present application.
  • FIG. 5 is a schematic diagram of the structure of a pressure relief member in a battery cell tray in some embodiments of the present application.
  • FIG. 6 is a cross-sectional view of a pressure relief member in a battery cell tray in some embodiments of the present application.
  • FIG. 7 is a schematic diagram of the structure of the current collector in the battery cell tray in some embodiments of the present application.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them.
  • a first feature being “above”, “above” and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below” and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
  • the terms “upper”, “lower”, “right”, etc. are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.
  • the terms “first” and “second” are only used to distinguish in the description and have no special meaning.
  • the present application provides a battery cell tray.
  • FIG. 1 is a schematic diagram of the structure of a battery tray in some embodiments of the present application.
  • FIG. 2 is a cross-sectional view of a battery tray in some embodiments of the present application.
  • the battery tray includes: a tray body 100, a partition assembly 200, a current collector 300, and a pressure relief member 400.
  • the top wall of the tray body 100 is used to be fixedly connected to the bottom of the battery cell 500.
  • a heat dissipation and pressure relief cavity is provided in the tray body 100.
  • the partition assembly 200 is arranged in the heat dissipation and pressure relief cavity, and the partition assembly 200 is used to separate the heat dissipation and pressure relief cavity into a heat dissipation channel 110 and a pressure relief channel 120.
  • the current collector 300 is arranged on the tray body 100 and communicated with the heat dissipation channel 110, and the current collector 300 is used to inject coolant into the heat dissipation channel 110.
  • the pressure relief member 400 is arranged on the tray body 100 and communicated with the pressure relief channel 120, and the pressure relief member 400 is used to guide the hot air in the pressure relief channel 120.
  • the tray body 100 is in a cubic shape or a disc shape.
  • the tray body 100 is in a rectangular shape, and its interior is hollow to serve as a heat dissipation and pressure relief chamber.
  • the partition assembly 200 is composed of a plurality of plate-like structures, which can be welded and fixed to the inner wall of the heat dissipation and pressure relief chamber, or can be integrally formed with the tray body 100.
  • a plurality of plate-like structures are arranged at intervals to form a heat dissipation channel 110 and a pressure relief channel 120 in the heat dissipation and pressure relief chamber.
  • a plurality of through holes 101 are also provided on the top wall of the tray body 100, the bottom wall of the battery cell 500 covers the through hole 101, and the pressure relief channel 120 is located directly below the through hole 101 and is connected to the through hole 101. Both sides of the pressure relief channel 120 are heat dissipation channels 110, and the heat dissipation channels 110 and the pressure relief channels 120 are not connected to each other. Both the current collector 300 and the pressure relief member 400 can be fixed on the side of the tray body 100 by welding.
  • the current collector 300 can be connected to the injection tube and the return pipe, the injection tube is connected to the injection pump, and the return pipe can be connected to the cooling box filled with coolant.
  • a condenser and other cooling equipment can also be set in the cooling box to ensure that the temperature of the coolant meets the heat dissipation requirements.
  • the pressure relief member 400 can be connected to the explosion-proof valve outside the battery tray to guide the hot air to the explosion-proof valve so that the hot air is discharged through the explosion-proof valve.
  • the current collector 300 injects coolant into the heat dissipation channel 110.
  • the bottom of the battery cell 500 can be cooled through the through hole 101, so as to effectively slow down the continuous increase in the temperature at the bottom of the battery cell 500.
  • the hot air can enter the pressure relief member 400 along the pressure relief channel 120, and the pressure relief member 400 guides the hot air out of the heat dissipation and pressure relief cavity, thereby not only dissipating the heat at the bottom of the battery cell 500, but also reducing the pressure in the tray body 100.
  • the battery cell 500 can be effectively cooled and depressurized through the independent pressure relief channel 120 and the heat dissipation channel 110, reducing the possibility of thermal runaway of the battery cell 500 during operation and improving the overall safety performance.
  • FIG3 is an enlarged view of the A part in the implementation shown in FIG2.
  • a plurality of battery cells 500 are distributed on the tray body 100 in multiple columns, and the partition assembly 200 includes a plurality of first partition plates 210.
  • the plurality of first partition plates 210 are fixed in the heat dissipation and pressure relief cavity at intervals, and a first partition plate 210 is respectively arranged on both sides of each column of battery cells 500, so that a heat dissipation channel 110 or a pressure relief channel 120 is formed between two adjacent first partition plates 210.
  • the first partition plate 210 is in the shape of a rectangular thin plate, which extends in a vertical plane, and the extension direction can be the length direction of the tray body 100 or the width direction of the tray body 100.
  • a plurality of first partition plates 210 are distributed at intervals along the radial direction of the through hole 101, and the width of the pressure relief channel 120 formed is greater than the aperture of the through hole 101, so that the entire through hole 101 is covered in the pressure relief channel 120.
  • the width of the heat dissipation channel 110 is smaller than that of the pressure relief channel 120, so as to reduce the volume of the entire tray body 100. It should be understood that the width of the heat dissipation channel 110 can also be greater than or equal to the width of the pressure relief channel 120, and can be specifically designed according to actual heat dissipation requirements and the size of the installation space.
  • the heat dissipation and pressure relief chamber is smoothly divided into heat dissipation channels 110 and pressure relief channels 120 that are not connected to each other.
  • the heat of the first partition plates 210 and the tray body 100 will be transferred to the coolant to achieve heat dissipation at the bottom of the battery cell 500.
  • each column of battery cells 500 corresponds to a column of pressure relief channels 120, so that two adjacent columns of battery cells 500 are separated, reducing the possibility of heat spread.
  • the partition assembly 200 further includes a second partition plate 220.
  • the second partition plate 220 is fixed in the heat dissipation and pressure relief cavity and is arranged opposite to the top wall of the tray body 100, the first partition plate 210 is fixedly connected to the top wall of the second partition plate 220, and the bottom wall of the second partition plate 220 and the inner bottom wall of the heat dissipation and pressure relief cavity form a heat dissipation cavity 130 connected to the current collector 300.
  • the second partition plate 220 extends horizontally, the first partition plate 210 is located above the second partition plate 220, and the bottom wall of the first partition plate 210 is fixedly connected to the top wall of the second partition plate 220, and the two can be welded or integrally formed.
  • the side wall of the second partition plate 220 is fixedly connected to the cavity wall of the heat dissipation and pressure relief cavity to form the above-mentioned heat dissipation cavity 130 on the lower side of the second partition plate 220, and the heat dissipation cavity 130 is not connected to the heat dissipation channel 110 and the pressure relief channel 120.
  • the second partition plate 220 is provided to separate the bottom of the battery cell 500 from the bottom wall of the tray body 100, thereby reducing the possibility that the heat at the bottom of the battery cell 500 is directly transferred to the bottom wall of the tray body 100.
  • the coolant input by the current collector 300 will simultaneously enter the heat dissipation cavity 130 to further cool and dissipate the bottom wall of the tray body 100, while improving the isolation effect between the bottom of the battery cell 500 and the bottom wall of the tray body 100, so that when the temperature of the bottom of the battery cell 500 is high, its heat will not be directly transferred to the bottom wall of the tray body 100, thereby effectively reducing the possibility that the bottom wall of the tray body 100 is deformed or even burned by flames.
  • the partition assembly 200 further includes a plurality of third partition plates 230 .
  • the plurality of third partition plates 230 are fixed in the heat dissipation cavity 130 at intervals to divide the heat dissipation cavity 130 into a plurality of flow channels communicating with the current collector 300 .
  • the third partition plate 230 can be arranged corresponding to the first partition plate 210 to form flow channels corresponding to the heat dissipation channel 110 and the pressure relief channel 120 in the heat dissipation cavity 130.
  • the third partition plate 230 may not be arranged corresponding to the first partition plate 210.
  • the two may be arranged in a staggered manner, that is, a third partition plate 230 is arranged between two adjacent first partition plates 210.
  • the two may also be arranged in an interlaced manner, that is, the first partition plate 210 and the second partition plate 220 are interlaced.
  • the specific arrangement of the third partition plate 230 can be designed according to the actual heat dissipation requirements, and this application does not limit it.
  • a plurality of flow channels are formed in the heat dissipation cavity 130 through the third partition plate 230, so that when the coolant flows in the flow channels, it can fully contact the tray body 100 through the third partition plate 230, thereby increasing the contact area between the coolant and the tray body 100 and improving the heat dissipation effect of the coolant on the tray body 100.
  • FIG4 is a schematic diagram of the explosion structure of the battery tray in some embodiments of the present application.
  • FIG5 is a schematic diagram of the structure of the pressure relief member in the battery tray in some embodiments of the present application.
  • the pressure relief member 400 includes a pressure relief pipe 410 and a pressure relief head 420.
  • the pressure relief pipe 410 is fixed on the tray body 100 and is connected to the pressure relief channel 120.
  • the pressure relief head 420 is provided on the end wall of the pressure relief pipe 410 for discharging gas.
  • a pressure relief member 400 is provided on both sides of the tray body 100, so that the gas in the pressure relief channel 120 can quickly enter the pressure relief member 400 from both ends to achieve rapid pressure relief and temperature reduction. It should be understood that the number of pressure relief members 400 can be designed according to the size of the tray body 100 and the length of the pressure relief channel, and is not limited to the two in the above example.
  • FIG6 is a cross-sectional view of a pressure relief member in a battery tray in some embodiments of the present application.
  • the pressure relief pipe 410 can extend along the width direction of the tray body 100 , and its cross section can be rectangular or square.
  • the pressure relief pipe 410 is welded to the top wall of the tray body 100 , and a plurality of notches are provided on the top wall of the tray body 100 , and the plurality of notches correspond to and are connected with the plurality of pressure relief channels 120 .
  • the bottom wall of the pressure relief pipe 410 is provided with a strip opening 411 to be connected with the plurality of notches at the same time.
  • An extension plate 412 is provided on the side wall of the pressure relief pipe 410 , and the extension plate 412 extends into the notch and is welded and fixed to the inner wall of the notch, so as to realize a sealed connection between the pressure relief pipe 410 and the tray body 100 .
  • One end of the pressure relief pipe 410 is closed, and the other end is provided with an adapter 413 , and the pressure relief head 420 is connected to the adapter 413 , and the other end of the pressure relief head 420 can be used to communicate with the explosion-proof valve.
  • pressure relief pipes 410 By arranging pressure relief pipes 410 on both sides of the tray body 100, when hot air is generated in the pressure relief flow channel, the hot air can flow out from both ends of the pressure relief flow channel, and flow into the pressure relief pipe 410 through the strip opening 411, and then flow to the explosion-proof valve through the pressure relief head 420, thereby realizing pressure relief and heat dissipation in the tray body 100.
  • FIG7 is a schematic diagram of the structure of the current collector in the battery tray in some embodiments of the present application.
  • two current collectors 300 are provided, and the two current collectors 300 are respectively provided on both sides of the tray body 100 to allow the coolant to circulate.
  • the current collector 300 includes a collector 310 and a nozzle 320.
  • the collector 310 is fixed to the tray body 100, and the collector 310 is provided with a connecting port that is respectively connected to a plurality of heat dissipation channels 110.
  • the nozzle 320 is provided on the collector 310 for injecting or discharging the coolant.
  • both ends of the heat dissipation channel 110 and the heat dissipation cavity 130 are opened to communicate with two current collectors 300 respectively, one of the two current collectors 300 is used to inject coolant into the heat dissipation channel, and the other is used to reflux the coolant in the heat dissipation channel 110.
  • multiple current collectors 300 can also be provided, and the specific number of current collectors 300 can be designed according to the path of the heat dissipation channel and the flow direction of the coolant, which is not limited in this application.
  • the manifold 310 is welded to the side of the tray body 100, and a communication port is provided on the side of the manifold 310 to communicate with the corresponding flow channel and the heat dissipation channel 110.
  • the water nozzle 320 can be arranged on the top wall of the manifold 310, and a special delivery pipe 321 can be connected to the water nozzle 320 to allow the coolant to flow.
  • coolant is injected into the heat dissipation channel 110 and the flow channel through one of the manifolds 310. After the coolant fills the heat dissipation channel 110 and the heat dissipation cavity 130, the other manifold 310 is opened to allow the coolant to flow back through the nozzle 320 and the delivery pipe of the manifold 310, so that the coolant circulates in the flow channel and the heat dissipation channel 110.
  • the tray body 100 is an aluminum tray body.
  • aluminum has significant advantages in corrosion resistance, corrosion resistance, and weather resistance, and is very light in weight, but relatively strong, and has good thermal conductivity, which can well meet the requirements of cooling and heat dissipation. Therefore, the aluminum tray body is formed by aluminum extrusion processing, and the mold used is simple and the cost is low. The processing of various slots after the aluminum extrusion is formed is also relatively easy, so the overall production process is simple. Therefore, the tray body 100 produced by aluminum extrusion can reduce the production difficulty while also reducing the production cost, so as to improve the price advantage of the product.
  • the battery cell tray further includes a heat-conductive fixing layer 600.
  • the heat-conductive fixing layer 600 is disposed on the top wall of the tray body 100 to fix the battery cell 500. Specifically, after the bottom wall of the battery cell 500 abuts against the top wall of the tray body 100, the heat-conductive fixing layer 600 is coated on the top wall of the tray body 100 to fix the battery cell 500 on the tray body 100.
  • the heat-conductive fixing layer 600 may be a heat-conductive structural adhesive.
  • the present application also provides a battery module.
  • the battery module includes a battery cell 500 and a battery cell tray as in any of the above embodiments.
  • the battery cell 500 is arranged on a tray body 100 in the battery cell tray.
  • the battery cell tray can effectively dissipate heat and pressure at the bottom of the battery cell 500, thereby reducing the possibility of a thermal runaway chain reaction in the battery module as a whole, and effectively improving the safety of the battery module as a whole.
  • the present application also provides a vehicle
  • the vehicle includes a box body and a battery module as described above.
  • the battery module is disposed in the box body.
  • a connecting bar 150 may be disposed on the front and rear sides of the tray body 100.
  • the connecting bar 150 may be integrally formed with the tray body 100, or may be fixedly connected by welding or the like.
  • the interior of the connecting bar 150 is hollow to reduce the overall weight.
  • a plurality of bolts may be intermittently provided on the connecting bar 150 to fix the tray body 100 in the box body.
  • the battery cell tray, battery pack and vehicle in the embodiments of the present application have the following advantages:
  • the bottom of the battery cell 500 can be cooled in time, and the generated hot air can be discharged to the explosion-proof valve, thereby reducing the possibility of fire or even explosion, and improving the overall safety performance of the battery pack and the vehicle.
  • a plurality of first partitions 210, a second partition 220 and a plurality of third partitions 230 are arranged inside the tray body 100.
  • the plurality of first partitions 210 effectively separate the plurality of columns of battery cells 500
  • the second partition 220 and the plurality of third partitions 230 effectively separate the bottom of the battery cells 500 from the bottom wall of the tray body 100, thereby reducing the possibility of heat from the battery cells 500 being directly transferred to the bottom wall of the tray body 100. In this way, the occurrence of heat spread is blocked from the perspective of structural design, and the possibility of deformation of the tray body 100 due to heat is effectively reduced.
  • Two current collectors 300 are provided to realize the circulation of the coolant in the tray body 100 , thereby effectively improving the heat dissipation efficiency at the bottom of the battery cell 500 .
  • the tray body 100 is made of aluminum extrusions, which uses a simple mold, is low in cost, and has a simple overall production process, which not only effectively reduces the difficulty of production and processing, but also improves the price advantage of the product.

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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)
  • Aviation & Aerospace Engineering (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne un plateau d'élément de batterie, un module de batterie et un véhicule. Le plateau d'éléments de batterie comprend : un corps de plateau, un ensemble de séparation, un collecteur d'écoulement et une partie de détente de pression, une cavité de dissipation de chaleur et de décompression étant disposée dans le corps de plateau ; l'ensemble de séparation est disposé dans la cavité de dissipation de chaleur et de décompression et conçu pour séparer la cavité de dissipation de chaleur et de décompression en un canal de dissipation de chaleur et un canal de détente de pression ; le collecteur d'écoulement est disposé sur le corps de plateau et en communication avec le canal de dissipation de chaleur ; et la partie de détente de pression est disposée sur le corps de plateau et en communication avec le canal de détente de pression.
PCT/CN2023/112191 2022-10-26 2023-08-10 Plateau d'élément de batterie, module de batterie et véhicule WO2024087801A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202222830677.0 2022-10-26
CN202222830677.0U CN218731476U (zh) 2022-10-26 2022-10-26 电芯托盘、电池模组及车辆

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