Partition plate, partition plate assembly, battery assembly and electric equipment

Abstract

A partition plate, a partition plate assembly, a battery assembly and an electric device, the partition plate comprises a bearing plate, the bearing plate is used for bearing a battery cell, and at least part of the bearing plate is used for being spaced from the battery cell, so that a first air duct is formed between the bearing plate and the battery cell. The first air channel is formed between the bearing plate and the battery cell, so that the contact area of the battery cell and cold air is increased, the heat dissipation capability of the battery cell is improved, the temperature of the battery cell is reduced, and the operation stability of the battery cell is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery air cooling, and in particular to a partition, a partition assembly, a battery assembly and an electrical device. Background Art

[0002] The battery assembly includes a box body and a battery cell, wherein the battery cell is arranged in the box body. The box body is provided with an air inlet, and the air inlet is used for passing cold air to dissipate heat for the running battery cell.

[0003] The battery assembly also includes a partition, which is used to provide positioning for the battery cell in the box to improve the stability of the battery cell in the box. However, the installation of the partition will also reduce the contact area of ​​the battery cell with the cold air, reduce the heat dissipation capacity of the battery assembly, and reduce the stability of the battery assembly. Utility Model Content

[0004] The purpose of the present application is to provide a partition, a partition assembly, a battery assembly and an electrical device, aiming to solve the problem of poor heat dissipation capacity of the battery assembly for the battery cell in the related art.

[0005] To achieve the purpose of the present application, in a first aspect, the present application provides a partition, which includes a supporting plate, the supporting plate is used to support a battery cell, and the supporting plate is at least partially used to be spaced apart from the battery cell to form a first air duct between the supporting plate and the battery cell.

[0006] In a possible implementation manner, the supporting plate is provided with a groove to form the first air duct.

[0007] In a possible implementation, the partition further includes a first convex rib, the first convex rib is connected to the supporting plate, and the first convex rib is used to be arranged between the supporting plate and the battery cell to form the first air duct between the supporting plate and the battery cell.

[0008] In a possible implementation manner, at least two first convex ribs are disposed on the carrying plate, and two adjacent first convex ribs are spaced apart to form a first sub-air duct between two adjacent first convex ribs.

[0009] In a possible implementation manner, two adjacent first convex ribs are arranged in parallel.

[0010] In a possible implementation, the first convex rib includes a first rib segment, a second rib segment, and a third rib segment that are connected, the distance between the second rib segments of two adjacent first convex ribs is smaller than the distance between the first rib segments of two adjacent first convex ribs, and / or the distance between the second rib segments of two adjacent first convex ribs is smaller than the distance between the third rib segments of two adjacent first convex ribs.

[0011] In a possible implementation manner, a cross-sectional shape of the first convex rib perpendicular to an extending direction of the first convex rib includes at least one of a rectangle, a square, an ellipse or a trapezoid.

[0012] In a possible implementation manner, the first convex rib is made of an elastic material.

[0013] In a possible implementation, the separator further includes a plate body, and the plate body is used to separate the plurality of battery cells;

[0014] The bearing plate is connected to one end of the plate body and is arranged at an angle with the plate body. The first convex rib is arranged on a side of the bearing plate facing the plate body.

[0015] In a possible implementation, the supporting plate further includes a limiting plate, the limiting plate and the supporting plate are spaced apart and arranged on the same side of the plate body, the limiting plate is connected to the other end of the plate body, and is arranged at an angle to the plate body.

[0016] In a possible implementation, the partition further includes a second convex rib, and the second convex rib is provided between the plate body and the battery cell to form a second air duct between the plate body and the battery cell.

[0017] In a possible implementation manner, the second air duct and the first air duct extend in the same direction.

[0018] In a possible implementation, a height of the first convex rib protruding from the supporting plate is A, a height of the second convex rib protruding from the plate body is B, and B≥A≥1.2 mm.

[0019] In a second aspect, the present application provides a partition assembly, comprising:

[0020] A partition, a plurality of the partitions are arranged along a first direction, and the partition further comprises a positioning member, and the positioning member is connected to the bearing plate;

[0021] The positioning member comprises a first positioning surface and a second positioning surface which are arranged opposite to each other along a first direction, one of the first positioning surface and the second positioning surface is provided with a positioning hole, and the other is provided with a positioning column, and the first positioning surface of two adjacent partitions is opposite to the second positioning surface and is connected to the positioning column through the positioning hole;

[0022] The partition includes a carrying plate, the carrying plate is used to carry the battery cell, and at least a part of the carrying plate is used to be spaced apart from the battery cell so that a first air duct is formed between the carrying plate and the battery cell.

[0023] In a third aspect, the present application provides a battery assembly, the battery assembly comprising:

[0024] A box body, wherein the box body is formed with a containing space, and the box body has an air inlet and an air outlet;

[0025] a partition, or a partition assembly, wherein the partition is disposed in the accommodation space;

[0026] A battery cell, wherein the battery cell is carried on the carrying plate;

[0027] The partition assembly comprises:

[0028] A partition, a plurality of the partitions are arranged along a first direction, and the partition further comprises a positioning member, and the positioning member is connected to the bearing plate;

[0029] The positioning member comprises a first positioning surface and a second positioning surface which are arranged opposite to each other along a first direction, one of the first positioning surface and the second positioning surface is provided with a positioning hole, and the other is provided with a positioning column, and the first positioning surface of two adjacent partitions is opposite to the second positioning surface and is connected to the positioning column through the positioning hole;

[0030] The partition includes a carrying plate, the carrying plate is used to carry the battery cell, and at least a part of the carrying plate is used to be spaced apart from the battery cell so that a first air duct is formed between the carrying plate and the battery cell.

[0031] In a possible implementation, the first air duct is communicated with the air inlet of the box.

[0032] In one possible implementation, the battery cell includes two opposite first end faces and four second end faces surrounding the first end faces, the area of ​​the first end faces is greater than or equal to the area of ​​the second end faces, the second end faces of the battery cell are supported on the supporting plate and are at least partially spaced apart from the supporting plate, and the second end faces face the first air duct.

[0033] In a possible implementation, the partition further includes a first convex rib, the first convex rib is connected to the carrying plate, and the first convex rib is used to be arranged between the carrying plate and the battery cell, so that the first air duct is formed between the carrying plate and the battery cell;

[0034] The first rib extends along the length direction of the second end surface of the battery core.

[0035] In a possible implementation manner, an orthographic projection of the first convex rib on the carrier plate at least partially exceeds an orthographic projection of the battery cell on the carrier plate in an extending direction of the first convex rib.

[0036] In a possible implementation, the partition includes a plate body, which is arranged opposite to the first end surface of the battery cell and is at least partially spaced apart from each other to form a second air duct between the first end surface of the battery cell and the plate body.

[0037] In a possible implementation, the second air duct is communicated with the air inlet of the box.

[0038] In a possible implementation, a second convex rib is disposed on the board body, and the second convex rib is connected to the first end surface of the battery cell to form the second air duct between the first end surface of the battery cell and the board body.

[0039] In a possible implementation manner, the second convex rib extends along a length direction of the first end surface of the battery core.

[0040] In a fourth aspect, the present application provides an electric device, wherein the electric device includes a battery assembly, and the battery assembly includes:

[0041] A box body, wherein the box body is formed with a containing space, and the box body has an air inlet and an air outlet;

[0042] a partition, or a partition assembly, wherein the partition is arranged in the accommodating space, and the air inlet and the air outlet are respectively connected to the first air duct;

[0043] A battery cell, wherein the battery cell is carried on the carrying plate;

[0044] The partition assembly comprises:

[0045] A partition, a plurality of the partitions are arranged along a first direction, and the partition further comprises a positioning member, and the positioning member is connected to the bearing plate;

[0046] The positioning member comprises a first positioning surface and a second positioning surface which are arranged opposite to each other along a first direction, one of the first positioning surface and the second positioning surface is provided with a positioning hole, and the other is provided with a positioning column, and the first positioning surface of two adjacent partitions is opposite to the second positioning surface and is connected to the positioning column through the positioning hole;

[0047] The partition includes a carrying plate, the carrying plate is used to carry the battery cell, and at least a part of the carrying plate is used to be spaced apart from the battery cell so that a first air duct is formed between the carrying plate and the battery cell.

[0048] The present application forms a first air duct between the carrier plate and the battery cell to increase the contact area between the battery cell and the cold air, thereby improving the heat dissipation capacity of the battery cell, reducing the temperature of the battery cell, and improving the stability of the battery cell operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 A cross-sectional view of an embodiment of a battery assembly provided in the present application;

[0051] Figure 2 for Figure 1 Exploded view of the middle separator assembly and battery cell;

[0052] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the middle partition;

[0053] Figure 4 for Figure 1 Schematic diagram of the assembly of the middle partition assembly and the battery cell;

[0054] Figure 5 for Figure 3 A cross-sectional view of an embodiment of the first rib;

[0055] Figure 6 for Figure 3 A front view of

[0056] Figure 7 for Figure 3 Rear view of.

[0057] Description of reference numerals:

[0058] 1000-battery assembly;

[0059] 300-box, 310-accommodation space, 320-air inlet, 330-air outlet;

[0060] 200 - battery cell, 210 - housing, 2110 - first end surface, 2120 - second end surface, 220 - pole;

[0061] 100-partition assembly;

[0062] 10-partition;

[0063] 1- Loading plate;

[0064] 2-first convex rib, 21-first rib segment, 22-second rib segment, 23-third rib segment;

[0065] 3-Board body;

[0066] 4-limiting plate;

[0067] 5- second convex rib;

[0068] 6-positioning piece, 61-positioning hole, 62-positioning column;

[0069] 7-first air duct, 71-first sub-air duct;

[0070] 8- second air duct, 81- second sub-air duct. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0072] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0073] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0074] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0075] This application proposes an electric device, which can be a vehicle, a ship, or a spacecraft, and this application does not limit this. When the electric device is a vehicle, the vehicle can be a fuel vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and this application does not limit this either.

[0076] The electrical equipment includes electrical components and battery assemblies. When the electrical equipment is a vehicle, the electrical components may be motors, dashboards, or window lift mechanisms. The battery assembly is electrically connected to the electrical components, and the battery assembly is used to store and release electricity to maintain normal use of the electrical components.

[0077] Please refer to Figure 1, the battery assembly 1000 can be a battery pack or a battery module, which is not limited in this application. Taking the battery pack as an example, the battery module includes a box 300, a battery module and a battery management unit (BMS). The box 300 serves as a supporting skeleton of the battery assembly 1000, and is used to support and connect the various parts of the battery assembly 1000. The box 300 is formed with a accommodating space 310, and the box 300 is also provided with a vent connected to the accommodating space 310. At least one of the air inlet 320 and the air outlet 330 is used to connect to the air cooler, which can be an axial flow fan, a blower, or a centrifugal fan, which is not limited in this application. The cold air of the air cooler can enter the accommodating space 310 through the air inlet 320 to cool the battery assembly 1000. The battery management unit is arranged in the box 300, and the battery management unit is electrically connected to the battery module to monitor and manage the current parameters of the battery module.

[0078] Please refer to Figure 2 The battery module includes a battery cell 200 and a partition assembly 100. The battery cell 200 is arranged in the accommodation space 310. The battery cell 200 serves as the energy source of the battery assembly 1000 and is used to store and release electricity to supply electrical components. The battery cell 200 includes a shell 210 and a pole 220. The shell 210 serves as the main body of the battery cell 200 and is used to support and connect other structures of the battery cell 200. The shell 210 includes two opposite first end faces 2110 and four second end faces 2120 surrounding the first end faces 2110. The area of ​​the first end face 2110 is greater than or equal to the area of ​​the second end face 2120. The pole 220 is connected to the shell 210 and is used to connect to an external circuit. The pole 220 can be arranged on the first end face 2110 of the shell 210 or on the second end face 2120 of the shell 210. This application does not limit this.

[0079] The partition assembly 100 is disposed in the accommodating space 310. The partition assembly 100 can be bonded to the accommodating space 310 or can be threadedly connected to the accommodating space 310. This application does not limit this. The partition assembly 100 includes a partition 10. The partition 10 can be provided as one or more. This application does not limit this. When the partition 10 is provided as a plurality, each partition 10 is arranged along the first direction, and at least one battery cell 200 is provided on each partition 10. In this way, all the multiple battery cells 200 are integrated into a box 300, thereby improving the energy density of the battery assembly 1000.

[0080] Although the partition 10 can improve the stability of the battery cell 200 in the accommodating space 310 , it will also reduce the contact area between the battery cell 200 and the cold air, reduce the heat dissipation capacity of the battery cell 200 , and reduce the stability of the battery assembly 1000 .

[0081] Please refer to Figure 3 and Figure 4 To solve the above problems, in the present application, the partition 10 includes a carrier plate 1, which is used to contact the battery cell 200 to bear the gravity of the battery cell 200. The carrier plate 1 can contact the first end surface 2110 of the battery cell 200 to carry the battery cell 200 in the accommodation space 310, and the carrier plate 1 can also contact the second end surface 2120 of the battery cell 200 to carry the battery cell 200 in the accommodation space 310. The present application does not limit this. The carrier plate 1 is at least partially used to be spaced from the battery cell 200 so that a first air duct 7 is formed between the carrier plate 1 and the battery cell 200. When the cold air is poured into the accommodation space 310 from the air inlet 320, the cold air can enter the carrier plate 1 through the first air duct 7 and contact the battery cell 200 arranged on the carrier plate 1, so as to increase the contact area between the battery cell 200 and the cold air, improve the heat dissipation effect of the battery cell 200, and improve the stability of the operation of the battery assembly 1000.

[0082] In order to improve the heat dissipation effect of the battery assembly 1000, in one embodiment of the present application, the first air duct 7 is connected to the air inlet 320 of the box body 300. When the cold air enters the accommodating space 310 from the air inlet 320, the cold air can directly enter the first air duct 7. In this way, the time for the cold air to enter the first air duct 7 is reduced, thereby improving the heat dissipation effect of the cold air on the battery assembly 1000.

[0083] There are many ways to form the first air duct 7. In one embodiment of the present application, the carrier plate 1 is provided with a groove to form the first air duct 7. The groove and the carrier plate 1 are integrally formed, thereby reducing the steps of forming the first air duct 7, simplifying the forming process of the first air duct 7, and reducing the manufacturing cost of the partition 10.

[0084] In other possible implementations of the present application, the partition 10 further includes a first rib 2, the first rib 2 is connected to the carrier plate 1, and the first rib 2 can be bonded to the carrier plate 1 or can be threadedly connected to the carrier plate 1. The present application does not limit this. The first rib 2 is used to be arranged between the carrier plate 1 and the battery cell 200, so that a first air duct 7 is formed between the carrier plate 1 and the battery cell 200.

[0085] The first rib 2 is provided to reduce the deformation of the partition 10. Specifically, during the charging process of the battery cell 200, the electrolyte inside the battery cell 200 will generate hydrogen and oxygen under the action of the current, and then convert the electrical energy into chemical energy for storage. During the discharge process of the battery cell 200, the hydrogen and oxygen in the battery cell 200 will be converted into electrical energy to supply power to the electrical equipment. During the charging and discharging process of the battery cell 200, the hydrogen and oxygen in the battery cell 200 will be continuously generated and consumed, and the volume of the battery cell 200 will also continuously expand and shrink with the generation and consumption of hydrogen and oxygen, thereby generating a "breathing" phenomenon. In order to ensure the supporting effect of the carrier plate 1 on the battery cell 200, the carrier plate 1 is usually made of rigid hard materials such as plastic and metal. During the expansion process of the battery cell 200, the carrier plate 1 will push the carrier plate 1 to move away from itself, thereby causing the partition 10 to deform.

[0086] The first rib 2 and the carrier plate 1 are formed separately, so that the first rib 2 can be made of an elastic material different from that of the carrier plate 1. The elastic material can be die-cut foam, silicone cotton, or elastic rubber, and this application does not limit this. The setting of the elastic material can make the first cam deform and recover along with the "breathing" of the battery cell 200 when the battery cell 200 produces the "breathing" phenomenon, so as to absorb the battery expansion, reduce the deformation of the partition 10, and extend the service life of the partition 10.

[0087] The number of the first convex ribs 2 can be one or more, and the present application does not limit this. In one embodiment of the present application, at least two first convex ribs 2 are provided on the carrier plate 1, and two adjacent first convex ribs 2 are arranged at intervals to form a first sub-air duct 71 between the two adjacent first convex ribs 2. The provision of multiple first convex ribs 2 can increase the contact area between the first convex ribs 2 and the battery cell 200, thereby improving the stability of the battery cell 200 when the first convex ribs 2 are provided.

[0088] In one embodiment of the present application, a plurality of first ribs 2 are provided, and two adjacent first ribs 2 are arranged in parallel, so as to balance the force on the battery cell 200 and improve the stability of the first ribs 2 supporting the battery cell 200.

[0089] The cross-sectional shape of the first rib 2 perpendicular to the extension direction of the first rib 2 includes at least one of a rectangle, a square, an ellipse or a trapezoid. The rectangular and square cross-sectional settings can increase the contact area between the first rib 2 and the battery cell 200, and improve the stability of the first rib 2 supporting the battery cell 200. The elliptical and trapezoidal cross-sectional settings can increase the ventilation area of ​​the first air duct 7, increase the contact area between the cold air and the battery cell 200, and improve the heat dissipation effect of the battery cell 200.

[0090] Please refer to Figure 5, the temperature of the battery cell 200 is mostly concentrated in the middle of the battery cell 200. In order to strengthen the heat dissipation in the middle of the battery cell 200, in one embodiment of the present application, the first rib 2 includes a first rib segment 21, a second rib segment 22 and a third rib segment 23 connected to each other. The first rib segment 21 and the third rib segment 23 are arranged on both sides of the second rib segment 22. The distance between the second rib segments 22 of two adjacent first rib segments 2 is smaller than the distance between the first rib segments 21 of two adjacent first rib segments 2. In this way, the area of ​​the first air duct 7 located in the second rib segment 22 is reduced. According to the Bernoulli principle, when the flow rate is constant, the flow channel becomes narrower, and the flow velocity of the fluid in the flow channel will increase. The faster the flow velocity, the smaller the area of ​​the first air duct 7 of the second rib segment 22, the higher the flow velocity. This can increase the flow velocity of the cold air in the second rib segment 22, thereby increasing the heat dissipation effect of the cold air on the battery cell 200 in the second rib segment 22, thereby improving the uniformity of the heat dissipation of the battery cell 200.

[0091] In other possible implementations of the present application, the distance between the second rib segments 22 of two adjacent first convex ribs 2 is smaller than the distance between the third rib segments 23 of two adjacent first convex ribs 2. In this way, the area of ​​the first air duct 7 located in the second rib segment 22 can also be reduced, the flow rate of the cold air in the second rib segment 22 can be increased, and the heat dissipation effect of the cold air on the battery cell 200 in the second rib segment 22 can be improved, thereby improving the uniformity of the heat dissipation of the battery cell 200.

[0092] In one possible implementation mode of the present application, the pole 220 of the battery cell 200 is arranged on one of the second end faces 2120 of the battery cell 200, and the other second end face 2120 of the battery cell 200 is supported on the supporting plate 1 and is at least partially spaced apart from the supporting plate 1, and the second end face 2120 faces the first air duct 7, so as to achieve heat dissipation at the bottom of the battery cell 200.

[0093] Please refer to Figure 3 and Figure 4 The first convex rib 2 can be arranged along the length direction of the second end surface 2120, or along the width direction of the second end surface 2120, and the present application does not limit this. In one embodiment of the present application, the first convex rib 2 extends along the length direction of the second end surface 2120 of the battery cell 200, so as to guide the cold air to flow along the length direction of the battery cell 200, increase the contact area between the cold air and the battery cell 200, and improve the heat dissipation effect of the heat dissipation device on the battery cell 200.

[0094] On the second end face 2120 of the battery cell 200, the first convex rib 2 may be continuously arranged along the length direction of the second end face 2120, or may be divided into a plurality of first sub-ribs, each of which is arranged at intervals along the length direction of the second end face 2120, thereby providing support for the second end face 2120 of the battery cell 200. In order to improve the heat dissipation effect of the cold air on the second end face 2120, in one embodiment of the present application, the first convex rib 2 is continuously arranged along the length direction of the second end face 2120, so that the cold air of each first sub-air duct 71 maintains an independent flow channel, reduces the cold air turbulence between each first sub-air duct 71, improves the heat dissipation effect of the cold air on the battery cell 200, and reduces the energy consumption of the fan.

[0095] In one possible implementation mode of the present application, the orthographic projection of the first convex rib 2 on the carrier plate 1 at least partially exceeds the orthographic projection of the battery cell 200 on the carrier plate 1 in the extension direction of the first convex rib 2. In this way, the length of the first air duct 7 is extended, the contact area between the cold air and the carrier plate 1 is increased, the blind angle of the first air duct 7 covering the second end face 2120 is reduced, and the heat dissipation effect of the cold air on the battery assembly 1000 is improved.

[0096] The partition 10 also includes a plate body 3, which is used to separate multiple battery cells 200. The carrier plate 1 is connected to one end of the plate body 3, and the first rib 2 is arranged on the side of the carrier plate 1 facing the plate body 3. The plate body 3 and the carrier plate 1 are arranged at an angle, so that the carrier plate 1 can support the end faces of different battery cells 200, thereby improving the stability of the partition 10 supporting the battery cells 200.

[0097] The angle between the board body 3 and the carrier board 1 can be 30°, 60°, or 90°. Considering that most of the existing battery cells 200 are rectangular structures, in one embodiment of the present application, the angle between the board body 3 and the carrier board 1 is 90°, so as to increase the contact area between the board body 3 and the battery cell 200 and improve the stability of the partition 10 supporting the battery cell 200.

[0098] The carrier plate 1 also includes a limiting plate 4, which is spaced apart from the carrier plate 1 on the same side of the plate body 3, the limiting plate 4 is connected to the other end of the plate body 3, the limiting plate 4 is set at an angle to the plate body 3, and the angle between the partition 10 and the plate body 3 can be 30°, 60°, or 90°. This application does not impose any restrictions on this. The setting of the limiting plate 4, on the one hand, can separate the partition 10, so that a single partition 10 can accommodate multiple battery cells 200, and improve the energy density of the battery cells 200 that can be accommodated by the partition 10. On the other hand, the limiting plate 4 can separate the distance between the battery cells 200 to prevent the battery cells 200 from being too close and affecting the heat dissipation effect of the battery cells 200.

[0099] The partition 10 further includes a second rib 5, which is disposed between the board body 3 and the battery cell 200 to form a second air duct 8 between the board body 3 and the battery cell 200. When cold air is poured into the accommodating space 310 from the air inlet 320, the cold air can enter the carrier board 1 through the second air duct 8 and contact the end surface of the battery cell 200 facing the board body 3, thereby increasing the contact area between the battery cell 200 and the cold air, improving the heat dissipation effect of the battery cell 200, and improving the stability of the operation of the battery assembly 1000.

[0100] In one possible implementation of the present application, the second air duct 8 extends in the same direction as the first air duct 7, so that the first air duct 7 and the second air duct 8 can enter the air in the same direction, thereby improving the uniformity of heat dissipation of the battery cell 200 and improving the heat dissipation effect of the battery cell 200. At the same time, since the second air duct 8 and the first air duct 7 extend in the same direction, when the box body 300 is provided with the air inlet 320, it is only necessary to provide the air inlet 320 on one side of the box body 300, so that the cold air can be introduced into the first air duct 7 and the second air duct 8 at the same time, thereby reducing the manufacturing cost of the battery assembly 1000.

[0101] In order to improve the heat dissipation effect of the battery assembly 1000, in one embodiment of the present application, the second air duct 8 is connected to the air inlet 320 of the box body 300. After the cold air enters the accommodating space 310 from the air inlet 320, the cold air can directly enter the second air duct 8. In this way, the time for the cold air to enter the first air duct 7 is reduced, thereby improving the heat dissipation effect of the cold air on the battery assembly 1000.

[0102] There are many ways to form the second air duct 8. In one embodiment of the present application, the plate body 3 is provided with a groove to form the second air duct 8. The groove is integrally formed with the plate body 3, thereby reducing the steps of forming the second air duct 8, simplifying the forming process of the second air duct 8, and reducing the manufacturing cost of the partition 10.

[0103] In other possible implementations of the present application, the partition 10 also includes a second rib 5, which is connected to the plate body 3. The second rib 5 can be bonded to the plate body 3 or threaded to the plate body 3. The present application does not limit this. The second rib 5 is used to be arranged between the plate body 3 and the battery cell 200, so that a second air duct 8 is formed between the plate body 3 and the battery cell 200. The second rib 5 and the plate body 3 are formed separately, so that the second rib 5 can select an elastic material different from the plate body 3 as a manufacturing material. The elastic material can be die-cut foam, silicone cotton, or elastic rubber, and the present application does not limit this. The provision of the elastic material can make the second cam deform and recover together with the "breathing" of the battery cell 200 when the battery cell 200 produces a "breathing" phenomenon, so as to absorb the battery expansion, reduce the deformation of the partition 10, and extend the service life of the partition 10.

[0104] The number of the second convex ribs 5 can be one or more, and the present application does not limit this. In one embodiment of the present application, at least two second convex ribs 5 are provided on the plate body 3, and two adjacent second convex ribs 5 are arranged at intervals to form a second sub-air duct 81 between the two adjacent second convex ribs 5. The provision of multiple second convex ribs 5 can increase the contact area between the second convex ribs 5 and the battery cell 200, thereby improving the stability of the battery cell 200 when the second convex ribs 5 are provided.

[0105] In one embodiment of the present application, a plurality of second convex ribs 5 are provided, and two adjacent second convex ribs 5 are arranged in parallel, so as to balance the force on the battery cell 200 and improve the stability of the second convex ribs 5 in supporting the battery cell 200.

[0106] The cross-sectional shape of the second rib 5 perpendicular to the extension direction of the second rib 5 includes at least one of a rectangle, a square, an ellipse or a trapezoid. The rectangular and square cross-sectional settings can increase the contact area between the second rib 5 and the battery cell 200, and improve the stability of the second rib 5 supporting the battery cell 200. The elliptical and trapezoidal cross-sectional settings can increase the ventilation area of ​​the second air duct 8, increase the contact area between the cold air and the battery cell 200, and improve the heat dissipation effect of the battery cell 200.

[0107] In one possible implementation mode of the present application, the pole 220 of the battery cell 200 is arranged on the second end surface 2120 of the battery cell 200, and the second convex rib 5 of the board body 3 is connected to the first end surface 2110 of the battery cell 200 to form a second air duct 8 between the first end surface 2110 of the battery cell 200 and the board body 3, thereby achieving large-surface heat dissipation for the battery cell 200.

[0108] The second rib 5 can be arranged along the length direction of the first end surface 2110, or along the width direction of the first end surface 2110, and the present application does not limit this. In one embodiment of the present application, the second rib 5 extends along the length direction of the first end surface 2110 of the battery cell 200, so as to guide the cold air to flow along the length direction of the battery cell 200, increase the contact area between the cold air and the battery cell 200, and improve the heat dissipation effect of the heat dissipation device on the battery cell 200.

[0109] On the first end face 2110 of the battery cell 200, the second convex rib 5 may be continuously arranged along the length direction of the first end face 2110, or may be divided into a plurality of second sub-ribs, each of which is arranged at intervals along the length direction of the first end face 2110, thereby providing support for the first end face 2110 of the battery cell 200. In order to improve the heat dissipation effect of the cold air on the first end face 2110, in one embodiment of the present application, the second convex rib 5 is continuously arranged along the length direction of the first end face 2110, so that the cold air of each second sub-air duct 81 maintains an independent flow channel, reduces the cold air turbulence between each second sub-air duct 81, improves the heat dissipation effect of the cold air on the battery cell 200, and reduces the energy consumption of the fan.

[0110] In one possible implementation mode of the present application, the orthographic projection of the second convex rib 5 on the plate body 3 at least partially exceeds the orthographic projection of the battery cell 200 on the plate body 3 in the extension direction of the second convex rib 5. In this way, the length of the second air duct 8 is extended, the blind spot coverage of the second air duct 8 for the second end surface 2120 is reduced, the contact area between the cold air and the plate body 3 is increased, and the heat dissipation effect of the cold air on the battery assembly 1000 is improved.

[0111] In one embodiment of the present application, the height of the first rib 2 protruding from the carrier plate 1 is A, and the height of the second rib 5 protruding from the plate body 3 is B, where B≥A≥1.2mm. Under this size restriction, the first air duct 7 and the second air duct 8 will not affect the heat dissipation effect of the battery cell 200 due to their shallow depth, nor will they increase the height of the partition 10 due to their deep depth, thereby reducing the space utilization rate of the partition 10 for the box body 300.

[0112] Please refer to Figure 6 and Figure 7 The partition 10 further includes a positioning member 6, which is connected to the carrier plate 1. The positioning member 6 includes a first positioning surface and a second positioning surface that are arranged opposite to each other along a first direction. One of the first positioning surface and the second positioning surface is provided with a positioning hole 61, and the other is provided with a positioning column 62. The first positioning surface and the second positioning surface of two adjacent partitions 10 are opposite to each other and are connected through the positioning hole 61 and the positioning column 62. The positioning hole 61 and the positioning column 62 are used to provide guidance for the connection of the partitions 10 when the partitions 10 are stacked along the first direction, thereby improving the assembly efficiency of the partition assembly 100.

[0113] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0114] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A partition, characterized in that: The partition includes a carrying plate, the carrying plate is used to carry the battery cell, and at least a part of the carrying plate is used to be spaced apart from the battery cell so that a first air duct is formed between the carrying plate and the battery cell.

2. The separator according to claim 1, characterized in that The supporting plate is provided with a groove to form the first air duct.

3. The separator according to claim 1, characterized in that The partition further includes a first convex rib connected to the supporting plate, and the first convex rib is used to be arranged between the supporting plate and the battery cell to form the first air duct between the supporting plate and the battery cell.

4. The separator according to claim 3, characterized in that At least two first convex ribs are arranged on the carrying plate, and two adjacent first convex ribs are arranged at an interval to form a first sub-air duct between two adjacent first convex ribs.

5. The separator according to claim 4, characterized in that Two adjacent first convex ribs are arranged in parallel.

6. The separator according to claim 4 or 5, characterized in that: The first convex rib includes a first rib segment, a second rib segment and a third rib segment connected to each other, the distance between the second rib segments of two adjacent first convex ribs is smaller than the distance between the first rib segments of two adjacent first convex ribs, and / or the distance between the second rib segments of two adjacent first convex ribs is smaller than the distance between the third rib segments of two adjacent first convex ribs.

7. The separator according to claim 3, characterized in that A cross-sectional shape of the first convex rib perpendicular to an extending direction of the first convex rib includes at least one of a rectangular shape, a square shape, an elliptical shape or a trapezoidal shape.

8. The separator according to claim 3, characterized in that The first convex rib is made of elastic material.

9. The separator according to claim 3, characterized in that The separator also includes a plate body, and the plate body is used to separate the plurality of battery cells; The bearing plate is connected to one end of the plate body and is arranged at an angle with the plate body. The first convex rib is arranged on a side of the bearing plate facing the plate body.

10. The separator according to claim 9, characterized in that The bearing plate further comprises a limiting plate, which is arranged at a same side of the plate body with a spacing therebetween as the bearing plate, and the limiting plate is connected to the other end of the plate body and is arranged at an angle to the plate body.

11. The separator according to claim 9 or 10, characterized in that: The partition further includes a second convex rib, which is disposed between the plate body and the battery cell to form a second air duct between the plate body and the battery cell.

12. The separator according to claim 11, characterized in that The second air duct extends in the same direction as the first air duct.

13. The separator according to claim 11, characterized in that The height of the first convex rib protruding from the bearing plate is A, and the height of the second convex rib protruding from the plate body is B, where B≥A≥1.2 mm.

14. A partition assembly, characterized in that: include: A plurality of partitions according to any one of claims 1 to 13, wherein the plurality of partitions are arranged along a first direction, and the partitions further comprise positioning members connected to the bearing plate; The positioning member includes a first positioning surface and a second positioning surface arranged opposite to each other along a first direction, one of the first positioning surface and the second positioning surface is provided with a positioning hole, and the other is provided with a positioning column, the first positioning surface of two adjacent partitions is opposite to the second positioning surface, and is connected through the positioning hole and the positioning column.

15. A battery assembly, characterized in that: include: A box body, wherein the box body is formed with a containing space, and the box body has an air inlet and an air outlet; The partition according to any one of claims 1 to 13, or the partition assembly according to claim 14, wherein the partition is arranged in the accommodating space; A battery cell is carried on the carrying plate.

16. The battery assembly according to claim 15, characterized in that: The first air duct is communicated with the air inlet of the box.

17. The battery assembly according to claim 15, characterized in that: The battery cell includes two opposite first end faces and four second end faces surrounding the first end faces, the area of ​​the first end faces is greater than or equal to the area of ​​the second end faces, the second end faces of the battery cell are supported on the supporting plate and are at least partially spaced apart from the supporting plate, and the second end faces face the first air duct.

18. The battery assembly according to claim 17, characterized in that: The partition further includes a first convex rib, the first convex rib is connected to the carrying plate, and the first convex rib is used to be arranged between the carrying plate and the battery cell, so that the first air duct is formed between the carrying plate and the battery cell; The first rib extends along the length direction of the second end surface of the battery core.

19. The battery assembly according to claim 18, characterized in that: The orthographic projection of the first convex rib on the carrying plate at least partially exceeds the orthographic projection of the battery cell on the carrying plate in the extending direction of the first convex rib.

20. The battery assembly according to claim 17, characterized in that: The partition includes a plate body, which is arranged opposite to the first end surface of the battery cell and is at least partially spaced apart from the first end surface of the battery cell to form a second air duct between the first end surface of the battery cell and the plate body.

21. The battery assembly according to claim 20, characterized in that: The second air duct is communicated with the air inlet of the box.

22. The battery assembly according to claim 20, characterized in that: The plate body is provided with a second convex rib, and the second convex rib is connected to the first end surface of the battery cell to form the second air duct between the first end surface of the battery cell and the plate body.

23. The battery assembly according to claim 22, characterized in that: The second convex rib extends along the length direction of the first end surface of the battery core.

24. An electrical equipment, characterized in that: Comprising a battery assembly as described in any one of claims 15-23.

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