Battery assembly and heat dissipation assembly thereof

Abstract

The present application relates to the field of injection mold, and relates to a heat dissipation assembly for a battery module. The heat dissipation assembly comprises a static pressure cavity plate, an air inlet and an air outlet arranged on the static pressure cavity plate, a plurality of middle installation plates arranged in a horizontal array at the air outlet, each middle installation plate comprising a first flow cavity arranged at a side end thereof, a first air outlet arranged corresponding to the air outlet of the static pressure cavity plate, and a first air duct formed between the first flow cavity and the first air outlet; the middle installation plates are connected to each other on the same side to form a flow cavity passage air exhaust assembly, which comprises a containing air cavity arranged corresponding to the flow cavity passage and an air exhaust device arranged in the containing air cavity, and a first end installation plate arranged between the middle installation plates and the air exhaust assembly, wherein a side surface of the first end installation plate facing the air exhaust assembly is a closed surface, and a second flow cavity is arranged at a side end of the first end installation plate, and the second flow cavity is connected to the flow cavity passage and the containing air cavity. Therefore, the heat dissipation capacity of the battery is consistent, and the temperature uniformity in the battery module is improved.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a battery assembly and its heat dissipation assembly. Background Technology

[0002] Current battery modules are mainly composed of multiple batteries. A good heat dissipation system can effectively remove the heat from each battery, ensuring that the heat dissipation effect of each battery is the same, thereby maintaining the consistency of battery temperature. The consistency of battery temperature is an important factor that directly affects the performance and lifespan of the battery module.

[0003] The current mainstream method for heat dissipation of battery modules is air cooling. Common air cooling methods mainly use two approaches: side air supply and center air outlet or rear air intake and front air outlet. After the external air passes through the air duct to dissipate heat from the battery, it is finally exhausted by the fan. Due to the large number of batteries in the battery module and the different arrangement of the batteries, the air volume and air temperature passing through each battery are different, resulting in uneven heat dissipation. When the battery is in operation, the large temperature difference of the battery module will reduce the performance and life of the battery module.

[0004] The principle of side-supply, center-exit airflow is that branch airflow paths pass through the large surfaces of the batteries within the module, cooling each battery before converging into the central air duct and finally exiting the battery module. Batteries near the air outlet have lower temperatures, and the heated air from each branch path passes through the batteries sequentially from bottom to top via the central air duct, resulting in batteries at the ends being cooler and those in the middle being warmer. The principle of rear-inlet, front-outlet airflow is that outside air enters the module from one end, sequentially passing through the air duct to cool the batteries before exiting from the other end. This method creates a larger temperature gradient within the battery module, with batteries at the air inlet being cooler and those further away being warmer, leading to uneven heat dissipation. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, the present invention provides a battery assembly and its heat dissipation assembly, which solves the problem of uneven heat dissipation in the prior art.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0007] A heat dissipation assembly for a battery module, the heat dissipation assembly comprising:

[0008] The static pressure chamber plate includes an air inlet on the side and an air outlet on its surface facing the battery module, the air outlets being arranged in a horizontal array.

[0009] A plurality of middle installation plates are arranged corresponding to each horizontal array of the air outlet of the static pressure cavity plate, the middle installation plate comprises a first converging cavity arranged at the side end thereof, a first air supply opening arranged corresponding to the air outlet of the static pressure cavity plate, and a first air duct formed between the first converging cavity and the first air supply opening; the side ends of the middle installation plates are connected to form a converging cavity channel;

[0010] An air exhaust assembly comprises a receiving air cavity arranged corresponding to the converging cavity channel and an air exhaust device arranged in the receiving air cavity;

[0011] A first end installation plate is arranged between the middle installation plate and the air exhaust assembly, the side surface of the first end installation plate facing the air exhaust assembly is a closed surface, the first end installation plate is provided with a second converging cavity at the side end thereof, and the second converging cavity is connected to the converging cavity channel and the receiving air cavity;

[0012] A second end installation plate is arranged away from the first end installation plate and connected to the middle installation plate, the side surface of the second end installation plate away from the middle installation plate is a closed surface, the second end installation plate is provided with a third converging cavity at the side end thereof, one end of the third converging cavity is closed, and the other end is connected to the converging cavity channel.

[0013] The first air duct forms a hollow surface on the surface of the middle installation plate, and the first air duct is connected to the first converging cavity to form a first air exhaust opening.

[0014] The first end installation plate further comprises a second air supply opening arranged corresponding to the air outlet of the static pressure cavity plate, a second air duct formed between the second converging cavity and the second air supply opening, the second air duct is arranged at the side opposite to the closed surface, the thickness of the second air duct is smaller than that of the first air duct, and the second air duct is connected to the second converging cavity to form a second air exhaust opening.

[0015] The first air duct and the second air duct are arranged at right angles.

[0016] The static pressure cavity plate is hollow, and the static pressure cavity plate is provided with the air inlet on three side surfaces away from the air exhaust assembly.

[0017] The middle installation plate, the first end installation plate, the second end installation plate and the end plate formed by the receiving air cavity are provided with a connecting piece and a connecting groove corresponding thereto.

[0018] The receiving air cavity of the air exhaust assembly is provided with a mounting position for mounting the air exhaust device, and the thickness of the air exhaust device is the same as that of the receiving air cavity.

[0019] In order to achieve the above-mentioned purposes, the technical solutions adopted by the present application are as follows:

[0020] A battery assembly, characterized in that the battery assembly comprises:

[0021] A battery module, which is composed of multiple rows of batteries;

[0022] A heat dissipation assembly, which is composed of a static pressure cavity plate, multiple middle mounting plates, a first end mounting plate, a second end mounting plate, and an exhaust assembly.

[0023] Among them, one row of batteries can be installed on each side of the middle mounting plate, and the adjacent batteries on both sides share the first air duct; each row of batteries includes two batteries, the middle mounting plate is symmetrically arranged to form two groups of first air ducts, and two batteries are installed on one side of the middle mounting plate.

[0024] Among them, the current collection cavity channel, the first current collection cavity, the second current collection cavity, the third current collection cavity, and the accommodation air cavity are separated from the batteries to avoid the gas passing through the batteries from contacting the batteries again.

[0025] The battery assembly and the heat dissipation assembly thereof have the following beneficial effects: the heat dissipation structure of the battery assembly is designed by the placement position of the static pressure cavity plate, the cooling gas is sent into the air outlet corresponding to the air inlet, the air duct on each mounting plate is used to uniformly cool the batteries on both sides of the mounting plate, the hot air is discharged from the air duct into the current collection cavity channel, and then the hot air is discharged into the accommodation air cavity of the exhaust assembly through the current collection cavity channel, the hot air is extracted by the exhaust device of the exhaust assembly, the whole process of the heat dissipation mode is completed, and the heat dissipation effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the battery assembly of the embodiment of the present application;

[0027] Figure 2 It is a structural schematic diagram of the static pressure cavity plate in the battery assembly;

[0028] Figure 3 It is a structural schematic diagram of the middle mounting plate in the battery assembly;

[0029] Figure 4 It is a structural schematic diagram of the first end mounting plate in the battery assembly;

[0030] Figure 5 It is a structural schematic diagram of the accommodation air cavity in the battery assembly;

[0031] Figure 6 It is a structural schematic diagram of the second end mounting plate in the battery assembly;

[0032] Figure 7 Structure diagram of closing surface of first end mounting plate in battery assembly.

[0033] The drawings show:

[0034] 1- static pressure cavity plate; 2- middle mounting plate; 3- exhaust assembly; 4- first end mounting plate; 5- battery module; 6- second end mounting plate; 11- air inlet; 12- air outlet; 21- first confluence cavity; 22- first air outlet; 23- first air duct; 24- first exhaust port; 25- buckle; 26- buckle groove; 31- containing air cavity; 32- exhaust device; 33- mounting position; 41- second confluence cavity; 42- second air outlet; 43- second air duct; 44- second exhaust port; 51- battery; 61- third confluence cavity; 62- third air outlet; 63- third air duct; 64- third exhaust port; 211- first connecting piece; 212- first connecting groove; 311- second connecting piece; 312- second connecting groove; 411- third connecting piece; 412- third connecting groove; 611- fourth connecting piece; 612- fourth connecting groove. DETAILED DESCRIPTION

[0035] The application will be further described below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are intended to be illustrative only and are not in any way limiting of the application. In addition, it should be understood that the drawings are only schematic and are merely intended to provide a generalized understanding of the application. In particular, the drawings are not meant to provide a complete description of all aspects of the application. In the description of the application, specific terminology will be used to describe particular features but such terminology is intended to be illustrative only and is not meant to be limiting of the application. Unless specifically set forth herein, the terms "coupled," "connected," "fixed" are used broadly and encompass both direct and indirect coupling, connection, fixation, and are not restricted to mechanical or physical connections or couplings. Further, the description herein of any aspect or component of the application as a means for performing a function is intended to mean that the aspect or component is specifically designed to perform the function, regardless of structure.

[0036] In the present application, unless specifically stated and limited otherwise, the "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The "under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0037] In the description of the present application, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0038] Please refer to Figure 1 The present application includes a battery assembly and a heat dissipation assembly for the battery assembly, wherein the heat dissipation assembly comprises a static pressure chamber plate 1, a plurality of middle mounting plates 2, an exhaust assembly 3, a first end mounting plate 4 and a second end mounting plate 6.

[0039] Among them, please refer to Figures 1 to 3 , specifically refer to Figure 2 , the static pressure chamber plate 1 includes an air inlet 11 provided on the side surface and an air outlet 12 located on the surface and facing the direction of the battery module, and the air inlet 11 and the air outlet 12 are arranged in communication. The air outlet 12 is arranged in a horizontal array, and in order to more effectively intake air, the air inlet 11 covers the side surface of the static pressure chamber plate 1 and is arranged in sequence. Specifically refer to Figure 1 , the plurality of middle mounting plates 2 are arranged corresponding to each horizontal array of the air outlet 12 of the static pressure chamber plate 1; specifically refer to Figures 1 to 3 , the middle mounting plate 2 includes a first flow cavity 21 provided on the side end, a first air inlet 22 arranged corresponding to the air outlet 12 of the static pressure chamber plate 1, and a first air duct 23 formed in communication between the first flow cavity 21 and the first air inlet 22; specifically refer to Figure 3 , the first air duct 23 forms a hollow surface on the surface of the middle mounting plate 2, the first air duct 23 and the first flow cavity 21 are connected to form a first exhaust port 24, and the hollow surface of the middle mounting plate 2 can improve the heat dissipation capacity in the middle mounting plate 2.

[0040] Further, please refer to Figure 1 , the middle mounting plate 2 is connected to each other to form a flow cavity passage (not marked in the figure) at the same side end; specifically refer to Figure 1 and Figure 3 , the middle mounting plate 2 is installed with a row of batteries 51 on both sides, and the two rows of batteries 51 share the first air duct 23, and the middle mounting plate 2 is symmetrically arranged to form two groups of first air ducts 23, refer to Figure 3The two groups of first air ducts 23 are provided with buckling members 25 and buckling grooves 26 at the symmetrical connection, the battery 51 is placed on one group of first air ducts 23 on the two sides of the buckling member 25 and the buckling groove 26 respectively, and the cooling gas cools the battery 51 through the first air duct 23; the widths of the first air ducts 23 are the same, the first air ducts 23 with the same width can uniformly cool the battery 51 and ensure the uniform speed of air supply for the battery 51, according to the formula Q=V*A (air volume=velocity multiplied by area), the air volume of the cooling gas received by each battery 51 is consistent, and therefore the temperature uniformity of the battery 51 in the battery module 5 is improved.

[0041] Please refer to Figure 1 and Figure 5 The exhaust assembly 3 comprises a containing air cavity 31 arranged corresponding to the busbar cavity channel (not marked in the figure) and an exhaust device 32 arranged in the containing air cavity 31, wherein the containing air cavity 31 of the exhaust assembly 3 is provided with a mounting position 33 for mounting the exhaust device 32; the thickness of the exhaust device 32 is the same as the thickness of the containing air cavity 31, for containing the exhaust device 32 and avoiding the stall of the exhaust device 32 due to excessive resistance.

[0042] Please refer to Figure 1 , Figure 4 and Figure 5 The first end mounting plate 4 is arranged between the middle mounting plate 2 and the exhaust assembly 3, and the side surface of the first end mounting plate 4 facing the exhaust assembly 3 is a closed surface; the first end mounting plate 4 is provided with a second busbar cavity 41 at the side end, and the second busbar cavity 41 is connected with the busbar cavity channel (not marked in the figure) and the containing air cavity 31. The first end mounting plate 4 converges the hot air after the heat dissipation battery 51 through the closed surface into the containing air cavity 31 and then discharges the hot air through the exhaust device 32, so that the heat dissipation capacity of the battery 51 is consistent, and the temperature uniformity of the battery 51 in the battery module 5 is improved.

[0043] Please refer to Figure 1 and Figure 3 The first end mounting plate 4 further comprises a second air supply opening 42 arranged corresponding to the air outlet 12 of the static pressure cavity plate 1, and a second air duct 43 formed between the second busbar cavity 41 and the second air supply opening 42; the second air duct 43 is arranged at the side opposite to the closed surface, and the thickness of the second air duct 43 is half of the thickness of the first air duct 23. Please refer to Figure 4 A second exhaust opening 44 is formed at the connection between the second air duct 43 and the second busbar cavity 41, and the closed surface of the first end mounting plate 4 can ensure that the discharged hot air is discharged from the second exhaust opening 44 into the busbar cavity channel (not marked in the figure) along the second air duct 43 and then discharged from the exhaust device 32 through the containing air cavity 31, and the air volume received by each battery 51 is consistent.

[0044] Please refer to Figure 1 and Figure 6 , the second end mounting plate 6 is connected with the middle mounting plate 2 and is arranged away from the first end mounting plate 4, the side of the second end mounting plate 6 away from the middle mounting plate 2 is a closed surface, the second end mounting plate 6 is provided with a third bus cavity 61 at the side end, one end of the third bus cavity 61 is closed, and the other end is in communication with the bus cavity passage (not marked in the figure), the second end mounting plate 6 is provided with a third air outlet 62 corresponding to the air outlet 12 of the static pressure cavity plate 1, and a third air duct 63 arranged towards the side of the middle mounting plate 2, the third air duct 63 is in communication with the third air outlet 62 and the third bus cavity 61, wherein, please refer to Figure 4 and Figure 6 , the third air duct 63 has the same thickness as the second air duct 43; please refer to Figure 6 , the third air duct 63 and the third bus cavity 61 form a third air outlet 64 at the connection; please refer to Figure 1 , the second end mounting plate 6 is installed at the end of the plurality of middle mounting plates 2, so that the bus cavity passage forms a closed passage to guide the hot air to flow into the exhaust assembly 3 through the bus cavity passage.

[0045] Please refer to Figures 1 to 6 , in particular Figure 2 , the static pressure cavity plate 1 is hollow, the three sides of the static pressure cavity plate 1 away from the exhaust assembly 3 are all provided with the air inlet 11, and the side close to the exhaust assembly 3 is a closed surface without the air inlet 11, the static pressure refers to the pressure of the gas acting on the surface of the object parallel to the airflow, and actually refers to the pressure overcoming the resistance, when the cooling gas flowing into the three air inlets 11 is hindered by the closed surface close to the exhaust assembly 3, the generated pressure makes the cooling gas flowing into the air outlet 12 at the upper end; in particular Figures 1 to 6 , the air outlet 12 of the bottom static pressure cavity plate 1 corresponds to the first air outlet 22 of the middle mounting plate 2, the second air outlet 42 of the first end mounting plate 4 and the third air outlet 62 of the second end mounting plate 6 one by one, the airflow flow path is clear, the air ducts do not interfere with each other, and the internal air resistance is small.

[0046] Please refer to Figure 1 , Figure 3 and Figure 4 and Figure 6The first air duct 23 and the second air duct 43 and the third air duct 63 are arranged at right angles, and the right-angle arrangement of the air ducts is for realizing air inlet from below, so that the movement track of the cooling gas is first from below to above and then from left to right into the first air outlet 24 and the second air outlet 44 and the third air outlet 64 connected to the side, the cooling gas is introduced into the first air collecting cavity 21 and the second air collecting cavity 41 and the third air collecting cavity 61, and the air ducts with air inlet from below and air outlet from the side have a larger cold air contact area of the battery than the air ducts with air inlet from the left and air outlet from the left, and the heat dissipation area of the battery is increased.

[0047] Please refer to Figures 1 to 7 The end plate formed by the middle mounting plate 2, the first end mounting plate 4, the second end mounting plate 6 and the containing air cavity 31 is provided with a connecting piece and a connecting groove corresponding to the end plate, and details are shown in Figure 1 and Figure 3 The end plate of the middle mounting plate 2 is provided with a first connecting piece 211 and a first connecting groove 212 on both sides of the end plate; details are shown in Figure 1 and Figure 5 The side of the containing air cavity 31 towards the first end mounting plate 4 is provided with a second connecting piece 311 and a second connecting groove 312; details are shown in Figure 1 and Figure 4 and Figure 7 The end plate of the first end mounting plate 4 is provided with a third connecting piece 411 and a third connecting groove 412 on both sides of the end plate; details are shown in Figure 6 The side end plate of the second end mounting plate 6 towards the middle mounting plate 2 is provided with a fourth connecting piece 611 and a fourth connecting groove 612, and the heat dissipation assembly is sequentially assembled through the connecting pieces.

[0048] The application further discloses a battery assembly, please refer to Figure 1 The battery assembly comprises a battery module 5 and the heat dissipation assembly, and the battery module 5 is composed of a plurality of rows of batteries 51; the heat dissipation assembly is composed of a static pressure cavity plate 1, a plurality of middle mounting plates 2, an air exhaust assembly 3, a first end mounting plate 4 and a second end mounting plate 6.

[0049] Preferably, please refer to Figure 1 and Figure 3 One row of batteries 51 can be mounted on each side of the middle mounting plate 2, and the first air duct 23 is shared by the adjacent batteries 51 on both sides; each row of batteries 51 comprises two batteries 51, the middle mounting plate is symmetrically arranged to form two groups of first air ducts 23, and two batteries 51 are mounted on one side of the middle mounting plate 2.

[0050] Preferably, please refer to Figure 1The confluence cavity channel (not labeled in the figure), the first confluence cavity 21, the second confluence cavity 41, the third confluence cavity 61 and the accommodation air cavity 31 are separated from the battery 51 to avoid the hot air passing through the battery 51 from contacting the battery 51 again. Since the battery 51 does not contact the two side confluence cavities, the heated air will not heat the battery 51 again, avoiding the temperature cascade phenomenon.

[0051] The following is the installation process of the battery assembly:

[0052] Please refer to Figures 1 to 7 The battery assembly is composed of a battery module 5 composed of multiple rows of batteries 51 and a heat dissipation assembly. The heat dissipation assembly is first connected by a plurality of middle mounting plates 2 through the buckle members 25 and the buckle grooves 26 in the middle of the first air duct 23. For details, please refer to Figure 1 and Figure 3 The plurality of middle mounting plates 2 are connected through the first connecting members 211 and the first connecting grooves 212 provided on the end plates thereof. An accommodation space for placing the batteries 51 is formed between every two middle mounting plates 2. Every two rows of batteries 51 share a first air duct 23 on a middle mounting plate 2. For details, please refer to Figure 1 , Figure 3 and Figure 4 The middle mounting plate 2 closest to the exhaust assembly 3 is connected to the first end mounting plate 4 through the buckle members 25 and the buckle grooves 26. For details, please refer to Figure 1 and Figure 4 The first connecting members 211 and the second connecting grooves 312 provided on the end plate of the middle mounting plate 2 towards the first end mounting plate 4 are connected to the third connecting members 411 and the third connecting grooves 412 provided on the end plate of the first end mounting plate 4 towards the side of the middle mounting plate 2. For details, please refer to Figure 1 and Figure 5 and Figure 7 After the exhaust device 32 is installed in the mounting position 33, the third connecting members 411 and the third connecting grooves 412 of the first end mounting plate 4 are connected and installed to the second connecting members 311 and the second connecting grooves 312 on the accommodation air cavity 31. For details, please refer to Figure 1 and Figure 7 The second end mounting plate 6 is connected and installed to the corresponding first connecting members 211 and the first connecting grooves 212 on the middle mounting plate 2 through the fourth connecting members 611 and the fourth connecting grooves 612. After the above installation is completed, the batteries 51 are placed on the accommodation space formed between the middle mounting plate 2, the first end mounting plate 4 and the second end mounting plate 6. Finally, the air outlet 12 on the static pressure cavity plate 1 is aligned with the first air outlet 22 of the middle mounting plate 2 and the second air outlet 42 of the first end mounting plate 4 and is placed below, completing the installation of the battery assembly.

[0053] Please refer to Figure 1The battery assembly cooling structure is designed by the position of the static pressure cavity plate 1 in the embodiment. Figures 1 to 5 The cooling gas is sent into the first air outlet 22 and the second air outlet 42 and the third air outlet 62 of the corresponding middle installation plate 2 and the first end installation plate 4 and the second end installation plate 6 by the air outlet 12, and the batteries 51 on both sides of the middle installation plate 2 and the first end installation plate 4 and the second end installation plate 6 are cooled by the first air duct 23 and the second air duct 43 and the third air duct 63, and then the hot air is discharged from the first air outlet 24, the second air outlet 44 and the third air outlet 64 into the converging cavity passage (not marked in the figure) formed by the first converging cavity 21, the second converging cavity 41 and the third converging cavity 61, and the hot air is discharged into the air containing cavity 31 of the air exhaust assembly 3 through the converging cavity passage, and the hot air is discharged by the air exhaust device 32 to complete the whole process of the cooling mode. The cooling mode ensures the input of the cooling gas to each battery 51 by the air duct arranged at right angles and having the same width, the airflow is stable and the air speed is consistent, and at the same time, since the converging cavity passages on both sides of the middle installation plate 2, the first end installation plate 4 and the second end installation plate 6 are separated from the batteries 51 by the cavity wall, the heated gas is prevented from heating the batteries 51 again, the temperature cascade phenomenon is eliminated, and the cooling efficiency is improved. Please refer to Figure 1 and Figure 7 Since the plate surface of the first end installation plate 4 on the side facing the air exhaust assembly 3 is a closed surface, it can be seen that the air containing cavity 31 is a closed space, and the batteries 51 close to the air containing cavity 31 will not have a large temperature difference with other batteries 51 due to the air exhaust device 32.

[0054] In summary, the static pressure cavity plate 1, the first air duct 23, the second air duct 43 and the third air duct 63 uniformly cool the batteries 51, improve the cooling effect, and the converging cavity passage (not marked in the figure) formed by the first converging cavity 21 and the second converging cavity 41 and the third converging cavity 61 is connected to isolate the batteries 51, so that the hot air cannot heat the batteries 51 again, the temperature cascade phenomenon is avoided, and the cooling efficiency is improved.

[0055] The technical features of the above embodiments can be combined in any way, and in order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0056] The above examples only express the preferred embodiments of the present application, which are described in a more specific and detailed manner, but should not be understood as a limitation to the scope of the patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the scope of protection of the present application. Therefore, the scope of protection of the present application patent should be subject to the appended claims.

Claims

1. A heat dissipation component for a battery module, characterized in that, The heat dissipation component includes: The static pressure chamber plate includes an air inlet on the side and an air outlet on its surface facing the battery module, the air outlets being arranged in a horizontal array. A plurality of central mounting plates are arranged in a horizontal array corresponding to the air outlets of the static pressure chamber plate. Each central mounting plate includes a first confluence chamber located at its side end, a first air outlet located at the air outlet of the static pressure chamber plate, and a first air duct connecting the first confluence chamber and the first air outlet. The central mounting plates are interconnected at the same side end to form a confluence chamber channel. An exhaust assembly, comprising an air receiving cavity provided corresponding to the manifold channel and an exhaust device located in the air receiving cavity; A first end mounting plate is disposed between the middle mounting plate and the exhaust assembly. The side of the first end mounting plate facing the exhaust assembly is a closed surface. A second confluence cavity is provided on the side end of the first end mounting plate. The second confluence cavity connects the confluence cavity channel and the air receiving cavity. The second end mounting plate is connected to the middle mounting plate and is located away from the first end mounting plate. The side of the second end mounting plate away from the middle mounting plate is a closed surface. The side end of the second end mounting plate is provided with a third manifold cavity. One end of the third manifold cavity is closed, and the other end is connected to the manifold cavity channel.

2. The heat dissipation assembly according to claim 1, characterized in that, The first air duct forms a hollow surface on the surface of the middle mounting plate, and the first air vent is formed at the connection between the first air duct and the first confluence cavity.

3. The heat dissipation assembly according to claim 1, characterized in that, The first end mounting plate also includes a second air outlet corresponding to the air outlet of the static pressure chamber plate, and a second air duct connecting the second confluence chamber and the second air outlet. The second air duct is located on the opposite side of the closed surface, and the thickness of the second air duct is less than that of the first air duct. A second exhaust port is formed at the connection between the second air duct and the second confluence chamber.

4. The heat dissipation assembly according to claim 3, characterized in that, Both the first and second air ducts are set at right angles.

5. The heat dissipation assembly according to claim 1, characterized in that, The static pressure chamber plate is hollow, and the air inlet is provided on the three sides of the static pressure chamber plate away from the exhaust assembly.

6. The heat dissipation assembly according to claim 1, characterized in that, The middle mounting plate, the first end mounting plate, the second end mounting plate, and the end plate formed by the air-receiving cavity are respectively provided with connectors and connecting grooves.

7. The heat dissipation assembly according to claim 1, characterized in that, The exhaust assembly has an air receiving cavity with a mounting position for installing an exhaust device, and the thickness of the exhaust device is the same as the thickness of the air receiving cavity.

8. A battery assembly, characterized in that, The battery assembly includes: A battery module, wherein the battery module is composed of multiple rows of batteries; The heat dissipation component according to any one of claims 1 to 7.

9. The battery assembly according to claim 8, characterized in that, A row of batteries can be installed on each side of the central mounting plate, and adjacent batteries on both sides share the first air duct; each row of batteries includes two batteries, and the central mounting plate is symmetrically arranged to form two sets of first air ducts, with two batteries installed on one side of the central mounting plate.

10. The battery assembly according to claim 9, characterized in that, The manifold channel, the first manifold, the second manifold, the third manifold, and the air-receiving cavity are separated from the battery to prevent gas passing through the battery from coming into contact with the battery again.

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