Battery module stacking liquid cooling heat dissipation support for battery pack

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery module stacking liquid cooling heat dissipation bracket for a battery pack, which comprises a first liquid cooling battery module supporting plate, a second liquid cooling battery module supporting plate and a third liquid cooling battery module supporting plate which are arranged from top to bottom, a first liquid inlet and a first liquid outlet are formed in the first liquid-cooled battery module supporting plate, a second liquid inlet and a second liquid outlet are formed in the second liquid-cooled battery module supporting plate, and a third liquid inlet and a third liquid outlet are formed in the third liquid-cooled battery module supporting plate; the first liquid inlet is connected with a first pipeline, a second pipeline is connected between the first liquid outlet and the second liquid inlet, a third pipeline is connected between the second liquid outlet and the third liquid inlet, and the third liquid outlet is connected with a fourth pipeline. According to the scheme, the structure is simple, a plurality of battery modules are easily and regularly stacked in the transverse direction and the vertical direction, in addition, cooling liquid in all layers of liquid-cooled battery module supporting plates is communicated, and a better cooling effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a liquid-cooled heat dissipation bracket for stacking battery modules of a battery pack. Background Art

[0002] At present, new energy vehicles have attracted wide attention from all walks of life due to their excellent environmental performance. The requirements for new energy vehicles are also constantly increasing. As a new energy vehicle, electric vehicles are also developing in the direction of high safety, high energy ratio and light weight. The main factor that determines the mileage of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different models to meet driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple battery modules, that is, multiple battery modules are stacked up and down in the same box, and then the battery modules are connected. In traditional technology, the connection between multiple battery modules is mostly stacked in a frame structure. When the battery module is subjected to external impact or vibration, it is very easy to cause the displacement between the stacked battery modules, thus affecting the life of the battery pack.

[0004] In addition, the battery module will generate a large amount of heat during operation. If the heat is not effectively dissipated, the temperature inside the battery pack will be too high, causing the battery module to burn or even explode, resulting in a safety accident.

[0005] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the problems of the above-mentioned prior art and provide a liquid-cooled heat dissipation bracket for stacking battery modules of a battery pack, which is used to solve the technical problems of stacking battery modules in a row and being unable to cool and dissipate heat in the vertical direction in the traditional technology.

[0007] The above objectives are achieved through the following technical solutions:

[0008] A battery module stacking liquid cooling heat dissipation bracket for a battery pack, comprising a first liquid cooling battery module support plate, a second liquid cooling battery module support plate and a third liquid cooling battery module support plate arranged from top to bottom, wherein the first liquid cooling battery module support plate is provided with a first liquid inlet and a first liquid outlet, the second liquid cooling battery module support plate is provided with a second liquid inlet and a second liquid outlet, and the third liquid cooling battery module support plate is provided with a third liquid inlet and a third liquid outlet;

[0009] The first liquid inlet is connected to a first pipeline, the first liquid outlet is connected to a second pipeline between the second liquid inlet, the second liquid outlet is connected to the third liquid inlet, and the third liquid outlet is connected to a fourth pipeline; the outer end of the first pipeline is provided with a liquid inlet port, and the outer end of the fourth pipeline is provided with a liquid outlet port.

[0010] Further, the first liquid inlet, the first liquid outlet, the second liquid inlet, the second liquid outlet, the third liquid inlet and the third liquid outlet are located on the same side.

[0011] Further, the first liquid inlet, the second liquid outlet and the third liquid inlet form a first column, the first liquid outlet, the second liquid inlet and the third liquid outlet form a second column, and the first column and the second column are parallel to each other.

[0012] Furthermore, the first liquid-cooled battery module support plate, the second liquid-cooled battery module support plate and the third liquid-cooled battery module support plate are arranged at equal intervals.

[0013] Furthermore, the first liquid-cooled battery module support plate, the second liquid-cooled battery module support plate and the third liquid-cooled battery module support plate have the same specifications and all include a liquid-cooled base plate with a fluid groove and a liquid-cooled upper cover that can be snapped onto the surface of the liquid-cooled base plate.

[0014] Furthermore, a plurality of battery module mounting positions arranged at equal intervals are provided on the surface of the liquid-cooled upper cover.

[0015] Furthermore, mutually supporting screw through holes are provided on each of the battery module installation positions, and screw through holes corresponding to the screw through holes are respectively provided on the end covers at both ends of the battery module, and the screw through holes and the screw through holes are connected in series from top to bottom.

[0016] Furthermore, the number of the battery module mounting positions on the first liquid-cooled battery module support plate, the second liquid-cooled battery module support plate and the third liquid-cooled battery module support plate are the same and are symmetrically arranged with each other, and the battery module mounting positions in the same column are connected in series through the same screw.

[0017] Furthermore, the screw rod is an external hexagonal bolt, and a threaded section is provided at the bottom end thereof for screwing with a threaded groove provided on the bottom wall of the battery pack body.

[0018] Furthermore, the first liquid-cooled battery module support plate, the second liquid-cooled battery module support plate and the third liquid-cooled battery module support plate are made of metal.

[0019] Beneficial Effects

[0020] The utility model provides a liquid-cooled heat dissipation bracket for stacking battery modules of a battery pack, which adopts a coolant delivery structure of a multi-layer liquid cooling plate. While achieving heat dissipation of the multi-layer battery modules, the internal arrangement of the battery pack is compact, and it is easy to load, unload and maintain the various components; the frame structure can be used to stack and install the battery modules in an orderly manner, and it can ensure that the battery pack will not shift during transportation or external impact, thereby ensuring the life of the battery pack. This solution is not only simple in structure, easy to stack multiple battery modules horizontally and vertically, but also has good stability. In addition, the coolant in each layer of the liquid-cooled battery module support plate is interconnected to achieve a better cooling effect, and the layout is simple and easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a first-viewing angle of a liquid-cooled heat dissipation bracket for stacking battery modules of a battery pack according to the utility model;

[0022] Figure 2 It is a structural schematic diagram of a second viewing angle of a liquid-cooled heat dissipation bracket for stacking battery modules of a battery pack according to the utility model;

[0023] Figure 3 This is a schematic structural diagram of a liquid-cooled heat dissipation bracket with screws for stacking battery modules of a battery pack according to the utility model;

[0024] Figure 4 It is a structural schematic diagram of a liquid cooling upper cover in a liquid cooling heat dissipation bracket for stacking battery modules of a battery pack according to the utility model;

[0025] Figure 5 It is a structural schematic diagram of a liquid cooling lower cover, i.e., a fluid groove, in a liquid cooling heat dissipation bracket for stacking battery modules of a battery pack described in the utility model.

[0026] Graphic marking:

[0027] 1-first liquid-cooled battery module support plate, 2-second liquid-cooled battery module support plate, 3-third liquid-cooled battery module support plate, 4-first liquid inlet, 5-first liquid outlet, 6-second liquid inlet, 7-second liquid outlet, 8-third liquid inlet, 9-third liquid outlet, 10-first pipeline, 11-second pipeline, 12-third pipeline, 13-fourth pipeline, 14-liquid inlet port, 15-liquid outlet port, 16-first column, 17-second column, 18-liquid-cooled bottom plate, 19-liquid-cooled upper cover, 20-fluid groove, 21-battery module mounting position, 22-screw through hole, 23-screw. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 and Figure 2 As shown, the present solution provides a battery module stacking liquid cooling heat dissipation bracket for a battery pack, which is installed in a battery pack box, and includes a first liquid cooling battery module support plate 1, a second liquid cooling battery module support plate 2 and a third liquid cooling battery module support plate 3 arranged from top to bottom, wherein the first liquid cooling battery module support plate 1 is provided with a first liquid inlet 4 and a first liquid outlet 5, the second liquid cooling battery module support plate 2 is provided with a second liquid inlet 6 and a second liquid outlet 7, and the third liquid cooling battery module support plate 3 is provided with a third liquid inlet 8 and a third liquid outlet 9;

[0030] The first liquid inlet 4 is connected to a first pipeline 10, the first liquid outlet 5 and the second liquid inlet 6 are connected to a second pipeline 11, the second liquid outlet 7 and the third liquid inlet 8 are connected to a third pipeline 12, and the third liquid outlet 9 is connected to a fourth pipeline 13; the outer end of the first pipeline 10 is provided with a liquid inlet port 14, and the outer end of the fourth pipeline 13 is provided with a liquid outlet port 15; the liquid inlet port 14 and the liquid outlet port 15 are respectively connected to a liquid cooling circulation device arranged outside, and are used to transport cooling liquid to the liquid inlet port 14, and the cooling liquid enters the first liquid-cooled battery module support plate 1 through the first pipeline 10, and enters the first liquid-cooled battery module support plate 1 through the second pipeline 11. The cooling liquid enters the second liquid-cooled battery module support plate 2, enters the third liquid-cooled battery module support plate 3 through the third pipe 12, and then enters the fourth pipe 13 through the third liquid-cooled battery module support plate 3, and finally enters the liquid-cooling circulation device, so that the cooling liquid circulates in and out of the first liquid-cooled battery module support plate 1, the second liquid-cooled battery module support plate 2 and the third liquid-cooled battery module support plate 3, thereby cooling the surfaces of the first liquid-cooled battery module support plate 1, the second liquid-cooled battery module support plate 2 and the third liquid-cooled battery module support plate 3, and finally cooling the bottom of the battery module installed on each liquid-cooled battery module support plate.

[0031] In this embodiment, the first liquid-cooled battery module support plate 1, the second liquid-cooled battery module support plate 2 and the third liquid-cooled battery module support plate 3 are made of metal, preferably aluminum alloy, which can support the battery module and have good thermal conductivity.

[0032] As an optimization of this solution, the first liquid inlet 4, the first liquid outlet 5, the second liquid inlet 6, the second liquid outlet 7, the third liquid inlet 8 and the third liquid outlet 9 are located on the same side.

[0033] Among them, Figure 2 As shown, the first liquid inlet 4, the second liquid outlet 7 and the third liquid inlet 8 constitute a first column 16, the first liquid outlet 5, the second liquid inlet 6 and the third liquid outlet 9 constitute a second column 17, and the first column 16 and the second column 17 are parallel to each other.

[0034] In this embodiment, the first liquid-cooled battery module support plate 1, the second liquid-cooled battery module support plate 2 and the third liquid-cooled battery module support plate 3 are arranged at equal intervals.

[0035] like Figure 4 and Figure 5 As shown, in this embodiment, the first liquid-cooled battery module support plate 1, the second liquid-cooled battery module support plate 2 and the third liquid-cooled battery module support plate 3 have the same specifications, and all include a liquid-cooled base plate 18 with a fluid groove 20, and a liquid-cooled upper cover 19 that can be snapped with the surface of the liquid-cooled base plate 18; after the liquid-cooled upper cover 19 and the liquid-cooled base plate 18 are snapped with each other, the fluid groove 20 constitutes a closed cooling liquid channel, and while the cooling liquid flows in the fluid groove 20, it will take away the heat on the upper cover, thereby achieving cooling of the surface of the liquid-cooled upper cover 19, and indirectly achieving cooling of each battery module installed on the surface of the liquid-cooled upper cover 19.

[0036] like Figure 3 As shown, the surface of the liquid-cooled upper cover 19 is provided with a plurality of battery module mounting positions 21 arranged at equal intervals. Each battery module can be fixed to the battery module mounting position 21 by screws, or can be directly stacked on the battery module mounting position 21. After all the battery modules are stacked, they are sealed as a whole by the battery pack box.

[0037] The battery module mounting positions on the first liquid-cooled battery module support plate 1 , the second liquid-cooled battery module support plate 2 and the third liquid-cooled battery module support plate 3 are the same in number and are symmetrically arranged with each other, and the battery module mounting positions 21 located in the same column are connected in series through the same screw 23 .

[0038] The screw rod 23 is an external hexagonal bolt, and a threaded section is provided at the bottom end thereof for screwing with a threaded groove provided on the bottom wall of the battery pack case, so as to achieve the purpose of fixing the bracket to the battery pack case.

[0039] As another specific embodiment of the present scheme, screw through holes 22 that support each other are opened on each of the battery module mounting positions 21, and screw through holes corresponding to the screw through holes 22 are respectively provided on the end covers at both ends of the battery module. The screw 23 connects the screw through holes and the screw through holes 22 in series from top to bottom, thereby achieving the purpose of connecting and fixing the battery module to the battery module mounting position 21.

[0040] The above description is only for illustrating the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid cooling heat dissipation bracket for stacking battery modules of a battery pack, characterized in that: The invention comprises a first liquid-cooled battery module support plate (1), a second liquid-cooled battery module support plate (2) and a third liquid-cooled battery module support plate (3) which are arranged from top to bottom, wherein the first liquid-cooled battery module support plate (1) is provided with a first liquid inlet (4) and a first liquid outlet (5), the second liquid-cooled battery module support plate (2) is provided with a second liquid inlet (6) and a second liquid outlet (7), and the third liquid-cooled battery module support plate (3) is provided with a third liquid inlet (8) and a third liquid outlet (9); The first liquid inlet (4) is connected to a first pipeline (10), the first liquid outlet (5) and the second liquid inlet (6) are connected to a second pipeline (11), the second liquid outlet (7) and the third liquid inlet (8) are connected to a third pipeline (12), and the third liquid outlet (9) is connected to a fourth pipeline (13); an outer end of the first pipeline (10) is provided with a liquid inlet port (14), and an outer end of the fourth pipeline (13) is provided with a liquid outlet port (15).

2. A liquid cooling heat dissipation bracket for stacking battery modules of a battery pack according to claim 1, characterized in that: The first liquid inlet (4), the first liquid outlet (5), the second liquid inlet (6), the second liquid outlet (7), the third liquid inlet (8) and the third liquid outlet (9) are located on the same side.

3. A liquid cooling heat dissipation bracket for stacking battery modules of a battery pack according to claim 2, characterized in that: The first liquid inlet (4), the second liquid outlet (7) and the third liquid inlet (8) form a first column (16), the first liquid outlet (5), the second liquid inlet (6) and the third liquid outlet (9) form a second column (17), and the first column (16) and the second column (17) are parallel to each other.

4. The battery module stacking liquid cooling heat dissipation bracket for a battery pack according to claim 3, characterized in that: The first liquid-cooled battery module support plate (1), the second liquid-cooled battery module support plate (2) and the third liquid-cooled battery module support plate (3) are arranged at equal intervals.

5. A liquid cooling heat dissipation bracket for stacking battery modules of a battery pack according to claim 1 or 2, characterized in that: The first liquid-cooled battery module support plate (1), the second liquid-cooled battery module support plate (2) and the third liquid-cooled battery module support plate (3) have the same specifications and all include a liquid-cooled bottom plate (18) with a fluid groove (20) and a liquid-cooled upper cover (19) that can be snapped onto the surface of the liquid-cooled bottom plate (18).

6. A liquid cooling heat dissipation bracket for stacking battery modules of a battery pack according to claim 5, characterized in that: The surface of the liquid cooling upper cover (19) is provided with a plurality of battery module installation positions (21) arranged at equal intervals.

7. A liquid cooling heat dissipation bracket for stacking battery modules of a battery pack according to claim 6, characterized in that: Each battery module installation position (21) is provided with screw through holes (22) that support each other, and both end covers of the battery module are respectively provided with screw through holes corresponding to the screw through holes (22), and the screw (23) connects the screw through holes and the screw through holes (22) in series from top to bottom.

8. The battery module stacking liquid cooling heat dissipation bracket for a battery pack according to claim 7, characterized in that: The battery module mounting positions on the first liquid-cooled battery module support plate (1), the second liquid-cooled battery module support plate (2) and the third liquid-cooled battery module support plate (3) are of the same number and are arranged symmetrically to each other, and the battery module mounting positions (21) located in the same column are connected in series via the same screw rod (23).

9. A liquid cooling heat dissipation bracket for stacking battery modules of a battery pack according to claim 8, characterized in that: The screw rod (23) is an external hexagonal bolt, and a threaded section is provided at the bottom end thereof for being screwed to a threaded groove provided on the bottom wall of the battery pack box.

10. The battery module stacking liquid cooling heat dissipation bracket for a battery pack according to claim 1, characterized in that: The first liquid-cooled battery module support plate (1), the second liquid-cooled battery module support plate (2) and the third liquid-cooled battery module support plate (3) are made of metal.

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