WO2024087801A1

WO2024087801A1 - Battery cell tray, battery module and vehicle

Info

Publication number: WO2024087801A1
Application number: PCT/CN2023/112191
Authority: WO
Inventors: 黄伟才; 陈智伟
Original assignee: 湖北亿纬动力有限公司
Priority date: 2022-10-26
Filing date: 2023-08-10
Publication date: 2024-05-02
Also published as: CN218731476U

Abstract

Disclosed in the present application are a battery cell tray, a battery module and a vehicle. The battery cell tray comprises: a tray body, a separation assembly, a flow collector and a pressure relief part, wherein a heat dissipation and pressure relief cavity is provided in the tray body; the separation assembly is arranged in the heat dissipation and pressure relief cavity and configured to separate the heat dissipation and pressure relief cavity into a heat dissipation channel and a pressure relief channel; the flow collector is arranged on the tray body and in communication with the heat dissipation channel; and the pressure relief part is arranged on the tray body and in communication with the pressure relief channel.

Description

Battery cell trays, battery modules and vehicles

This application claims the priority of the Chinese patent application filed with the China Patent Office on October 26, 2022, with application number 202222830677.0. The entire contents of the above application are incorporated by reference into this application.

Technical Field

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.

Background technique

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.

In the related art, in a cylindrical battery module, multiple battery cells are supported by a tray and placed in a box, so the bottoms of the battery cells are connected together, while in traditional technology, the cooling of the battery cells is mainly concentrated on the top or side of the battery cells.

When the current of a cell increases and the temperature at its bottom also increases, the current and temperature promote each other and produce thermal runaway, which can easily cause thermal runaway of adjacent cells, and then trigger a chain reaction in the entire cylindrical battery module, making the entire battery module at risk of thermal runaway. 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.

SUMMARY OF THE INVENTION

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.

In a first aspect, 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.

In a second aspect, 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.

In a third aspect, 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.

Beneficial Effects

The beneficial effects of the present application are as follows: 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. When the air temperature at the bottom of the battery cell rises and turns into hot air, 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. In this way, through independent pressure relief channels and heat dissipation channels, 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.

BRIEF DESCRIPTION OF THE DRAWINGS

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.

In the figure:

100, tray body; 101, through hole; 110, heat dissipation channel; 120, pressure relief channel; 130, heat dissipation cavity; 150, connecting strip; 200, partition assembly; 210, first partition plate; 220, second partition plate; 230, third partition plate; 300, current collector; 310, current collecting pipe; 320, faucet; 321, delivery pipe; 400, pressure relief part; 410, pressure relief pipe; 411, strip opening; 412, extension plate; 413, adapter; 420, pressure relief head; 500, battery cell; 600, thermal conductive fixing layer.

Embodiments of the present invention

In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

In the present application, unless otherwise clearly specified and limited, 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. Moreover, 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.

In the description of this embodiment, 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. In addition, 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. Referring to FIG. 1 and FIG. 2, 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.

Specifically, the tray body 100 is in a cubic shape or a disc shape. In an embodiment of the present application, 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.

During the use of the battery cell 500, the current collector 300 injects coolant into the heat dissipation channel 110. As the coolant circulates, 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. When the air temperature at the bottom of the battery cell 500 rises and generates hot air, 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. In this way, 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. Referring to FIG2 and FIG3, in some embodiments of the present application, 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.

Specifically, 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.

By setting a plurality of first partition plates 210, 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. When the coolant flows, 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. At the same time, 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.

As shown in FIG. 3 , in some embodiments of the present application, 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.

Specifically, 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. At the same time, when the battery cell 500 is cooled, 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.

3 , in some embodiments of the present application, 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 .

Specifically, 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. For example, 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. Referring to FIG4 and FIG5, in some embodiments of the present application, two pressure relief members 400 are provided, and the two pressure relief members 400 are respectively provided on both sides of the tray body 100. 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.

Specifically, 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. Referring to FIG6 , 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.

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. Referring to FIG4 and FIG7, 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.

3 and 4, specifically, 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. It should be understood that 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.

7 , 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.

When cooling and heat dissipation is performed, 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.

In some embodiments of the present application, the tray body 100 is an aluminum tray body. Specifically, 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.

As shown in FIG. 4 , in some embodiments of the present application, 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. By providing the heat-conductive fixing layer 600, not only can the battery cell 500 be fixed on the tray body 100, but also the heat generated by the battery cell 500 can be quickly transferred to the tray body 100 to further improve the heat dissipation efficiency.

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

As shown in FIG. 4 , the vehicle includes a box body and a battery module as described above. The battery module is disposed in the box body. Specifically, 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.

By reducing the possibility of thermal runaway of the battery module as a whole, the possibility of fire or even explosion during vehicle operation can be reduced, the possibility of safety accidents can be reduced, and the overall safety performance of the vehicle can be improved.

The battery cell tray, battery pack and vehicle in the embodiments of the present application have the following advantages:

1. By respectively arranging the heat dissipation channel 110 and the pressure relief channel 120 inside the tray body 100, 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.

2. 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, while 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.

3. 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 .

4. 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.

Claims

A battery cell tray, comprising:

A tray body (100), wherein a top wall of the tray body (100) is arranged to be fixedly connected to the bottoms of a plurality of battery cells (500), and a heat dissipation and pressure relief cavity is provided in the tray body (100);

A partition component (200) is arranged in the heat dissipation and pressure relief cavity, and the partition component (200) is configured to separate the heat dissipation and pressure relief cavity into a heat dissipation channel (110) and a pressure relief channel (120);

a current collector (300) disposed on the tray body (100) and in communication with the heat dissipation channel (110), wherein the current collector (300) is configured to inject a coolant into the heat dissipation channel (110); and

A pressure relief member (400) is arranged on the tray body (100) and is in communication with the pressure relief channel (120). The pressure relief member (400) is arranged to discharge hot air in the pressure relief channel (120).
The battery cell tray according to claim 1, wherein the plurality of battery cells are distributed on the tray body (100) in multiple rows and intervals, and the partition assembly (200) comprises:

A plurality of first partition plates (210) are fixed at intervals in the heat dissipation and pressure relief cavity, and one first partition plate (210) is respectively arranged on both sides of each column of the battery cells, so that the heat dissipation channel (110) or the pressure relief channel (120) is formed between two adjacent first partition plates (210).
The battery cell tray according to claim 2, wherein the partition assembly (200) further comprises:

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); 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 collector (300).
The battery cell tray according to claim 3, wherein the partition assembly (200) further comprises:

A plurality of third partition plates (230) are fixed at intervals in the heat dissipation cavity (130) to divide the heat dissipation cavity (130) into a plurality of flow channels connected to the current collector (300).
The battery cell tray according to any one of claims 1 to 4, wherein two pressure relief members (400) are provided, and the two pressure relief members (400) are respectively provided on both sides of the tray body (100); and/or

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 cell tray according to any one of claims 1 to 4, wherein the current collector (300) comprises:

A collecting pipe (310) is fixed on the tray body (100), and the collecting pipe (310) is provided with communication ports respectively connected to the plurality of heat dissipation channels (110); and

a water nozzle (320), disposed on the manifold (310) and configured to inject or discharge cooling liquid; and/or

The pressure relief member (400) comprises:

a pressure relief pipe (410) fixed to the tray body (100) and connected to the pressure relief channel (120); and

A pressure relief head (420) is disposed on the end wall of the pressure relief pipe (410) and is configured to discharge gas.
The battery cell tray according to any one of claims 1 to 4, wherein the tray body (100) is an aluminum tray body.
The battery cell tray according to any one of claims 1 to 4, further comprising:

A heat-conductive fixing layer (600) is disposed on the top wall of the tray body (100) and is configured to fix the battery core (500).
A battery module, comprising:

The battery cell tray according to any one of claims 1 to 8; and

The battery cell (500) is arranged on the tray body (100) of the battery cell tray.
A vehicle, comprising:

The housing; and

The battery module as described in claim 9 is arranged in the box.