Heat dissipation assembly in battery pack assembly

Abstract

The utility model provides a heat dissipation assembly in a battery pack assembly, which relates to the field of battery packs and comprises a bottom plate and a cover plate, cooling grooves are arranged on both the bottom plate and the cover plate, each cooling groove comprises a water inlet end, a water outlet end and a cooling area, both the water inlet end and the water outlet end are communicated with the corresponding cooling area and penetrate through the corresponding bottom plate or cover plate, and the water inlet end and the water outlet end are communicated with the corresponding cooling area. The cooling grooves of the cooling area are arranged on the side wall of the corresponding bottom plate or cover plate in an S shape; the partition plate is arranged between the bottom plate and the cover plate, the side wall of the partition plate and the inner wall of the cooling groove in the bottom plate form a first flowing channel, and the side wall of the partition plate and the inner wall of the cooling groove in the cover plate form a second flowing channel; the water inlet end on the bottom plate is aligned with the water outlet end on the cover plate, and the water outlet end on the bottom plate is aligned with the water inlet end on the cover plate; one of the two battery pack assemblies is arranged on the side, away from the cover plate, of the bottom plate, and the other battery pack assembly is arranged on the side, away from the bottom plate, of the cover plate. The battery pack assembly has the effect that the overall heat dissipation of the battery pack assembly is more uniform.

Description

Technical Field

[0001] This application relates to the field of battery packs, and in particular to a heat dissipation component in a battery pack assembly. Background Art

[0002] For a new energy vehicle powered purely by electricity, the main power source is the battery, and it is essential to equip the battery with a heat dissipation structure to quickly dissipate the heat generated during its operation, ensuring the normal and safe operation of the battery pack.

[0003] In the prior art, heat sinks are provided in the battery pack assembly. The heat generated by the battery is mainly absorbed by the heat sinks. The external cold medium enters the heat sinks, absorbs the heat of the heat sinks, and then flows out of the heat sinks to achieve heat transfer, thereby cooling the battery pack assembly.

[0004] Since the cold medium enters from one end of the heat sink and then gradually warms up, the cooling effect of the cold medium on the battery pack assembly near the outlet end of the heat sink is poor, resulting in uneven overall heat dissipation of the battery pack assembly. Utility Model Content

[0005] In order to make the overall heat dissipation of the battery pack assembly more uniform, this application provides a heat dissipation component in a battery pack assembly.

[0006] To solve the above problems, the technical solution of the present utility model is as follows:

[0007] A heat dissipation component in a battery pack assembly, comprising:

[0008] A bottom plate and a cover plate, both the bottom plate and the cover plate are provided with cooling grooves. The cooling grooves include a water inlet end, a water outlet end, and a cooling area. The water inlet end and the water outlet end are both communicated with the corresponding cooling area. The water inlet end and the water outlet end penetrate the corresponding bottom plate or the cover plate, and the cooling grooves of the cooling area are arranged in an S shape on the side wall of the corresponding bottom plate or the cover plate;

[0009] A partition plate is arranged between the bottom plate and the cover plate. A first flow channel is formed between the side wall of the partition plate and the inner wall of the cooling groove on the bottom plate, and a second flow channel is formed between the side wall of the partition plate and the inner wall of the cooling groove on the cover plate;

[0010] The water inlet end on the bottom plate and the water outlet end on the cover plate are aligned, and the water outlet end on the bottom plate and the water inlet end on the cover plate are aligned;

[0011] Two battery pack assemblies, one battery pack assembly is arranged on the side of the bottom plate away from the cover plate, and the other battery pack assembly is arranged on the side of the cover plate away from the bottom plate.

[0012] In the heat dissipation component of the battery pack assembly of the present utility model, the first flow channel located in the cooling area includes a plurality of first direct current channels and a plurality of first arc channels. One first arc channel is arranged between adjacent first direct current channels, and both ends of the first arc channel communicate with the corresponding adjacent first direct current channels; the second flow channel located in the cooling area includes a plurality of second direct current channels and a plurality of second arc channels. One second arc channel is arranged between adjacent second direct current channels, and both ends of the second arc channel communicate with the corresponding adjacent second direct current channels;

[0013] The first direct current channel and the second direct current channel are arranged in a staggered manner.

[0014] In the heat dissipation component of the battery pack assembly of the present utility model, the water inlet end and the water outlet end are located on the same side of the battery pack assembly.

[0015] In the heat dissipation component of the battery pack assembly of the present utility model, the partition board is a heat conduction plate.

[0016] In the heat dissipation component of the battery pack assembly of the present utility model, both the bottom plate and the cover plate adopt solder plates.

[0017] In the heat dissipation component of the battery pack assembly of the present utility model, sealing grooves are provided on the side wall of the partition board facing the bottom plate and on the side wall of the partition board facing the cover plate, and the sealing grooves are located outside the cooling grooves; sealing strips are arranged in the sealing grooves, and the sealing strips abut against the corresponding bottom plate / end cover.

[0018] In the heat dissipation component of the battery pack assembly of the present utility model, a plurality of heat dissipation ribs are arranged on the partition board, and the heat dissipation ribs extend outward to the bottom plate and the cover plate.

[0019] In the heat dissipation component of the battery pack assembly of the present utility model, the heat dissipation ribs are bent.

[0020] In the heat dissipation component of the battery pack assembly of the present utility model, the first flow channel and the second flow channel are arranged in alignment; a first matching groove is provided on the side wall of the partition board facing the bottom plate, and a second matching groove is provided on the side wall of the partition board facing the cover plate. The inner wall of the first matching and the inner wall of the cooling groove on the bottom plate form the first flow channel, and the inner wall of the second matching and the inner wall of the cooling groove on the cover plate form the second flow channel.

[0021] Due to the adoption of the above technical solutions, the present utility model has the following advantages and positive effects compared with the prior art:

[0022] The combination of the bottom plate, the partition plate and the cover plate forms a first flow channel and a second flow channel; the medium for cooling is located in the first flow channel and the second flow channel, and the flow directions of the cooling medium in the first flow channel and the cooling medium in the second flow channel are opposite, so that the cooling medium in the first flow channel or the second flow channel can transfer heat to make the temperatures of the water inlet end and the water outlet end uniform, and the overall heat dissipation of the battery pack assembly is more uniform.

[0023] Since the battery pack assemblies are closely arranged on the bottom plate or the cover plate, the temperature of the surface of the bottom plate or the cover plate directly passed by the cooling medium is relatively low, and the battery pack assemblies in contact with the lower temperature surfaces of the bottom plate and the cover plate dissipate heat faster; however, the heat dissipation effect of the battery pack assemblies is not good at the places where the cooling medium does not directly pass; therefore, the first direct current channel in the first flow channel and the second direct current channel in the second flow channel are arranged in a staggered manner, so that the cooling grooves in the cooling area are arranged in an S shape in a staggered manner. Through the heat transfer of the partition plate, the temperatures of the surfaces of the bottom plate and the cover plate can be made more uniform, and thus the overall heat dissipation of the battery pack assemblies is more uniform. Description of the Drawings

[0024] Figure 1 Overall structural schematic diagram of the heat dissipation component in the battery pack assembly of the first embodiment of the present application (without heat dissipation ribs)

[0025] Figure 2 Structural schematic diagram of the bottom plate, the cover plate and the partition plate of the heat dissipation component in the battery pack assembly of the first embodiment of the present application

[0026] Figure 3 Structural schematic diagram of the cover plate of the heat dissipation component in the battery pack assembly of the first embodiment of the present application

[0027] Figure 4 Structural schematic diagram of the bent arrangement of the heat dissipation ribs of the heat dissipation component in the battery pack assembly of the first embodiment of the present application

[0028] Figure 5 Structural schematic diagram of the bottom plate, the cover plate and the partition plate of the heat dissipation component in the battery pack assembly of the second embodiment of the present application

[0029] Figure 6 Structural schematic diagram of the bottom plate, the cover plate and the partition plate of the heat dissipation component in the battery pack assembly of the second embodiment of the present application from another perspective

[0030] Description of the reference numerals: 1. Bottom plate; 2. Cover plate; 3. Cooling groove; 4. Partition plate; 5. Battery pack assembly; 6. First direct current channel; 7. First arc channel; 8. Second direct current channel; 9. Second arc channel; 10. Sealing groove; 11. Sealing ring; 12. Heat dissipation rib; 13. First matching groove; 14. Second matching groove. Detailed Description of the Invention

[0031] The following further elaborates in detail on a heat dissipation component in a battery pack assembly proposed by the present utility model in conjunction with the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the present utility model will be clearer.

[0032] Embodiment 1:

[0033] Referring to Figures 1 to 3 , this embodiment provides a heat dissipation component in a battery pack assembly 5, including a bottom plate 1, a cover plate 2, a partition plate 4, and the battery pack assembly 5; cooling grooves 3 are provided on both the bottom plate 1 and the cover plate 2. The cooling groove 3 includes a water inlet end, a water outlet end, and a cooling area. Both the water inlet end and the water outlet end are communicated with the corresponding cooling area. The water inlet end and the water outlet end penetrate through the corresponding bottom plate 1 or cover plate 2, and the cooling grooves 3 in the cooling area are arranged in an S shape on the side wall of the corresponding bottom plate 1 or cover plate 2; the partition plate 4 is arranged between the bottom plate 1 and the cover plate 2, and the side wall of the partition plate 4 and the inner wall of the cooling groove 3 on the bottom plate 1 form a first flow channel, and the side wall of the partition plate 4 and the inner wall of the cooling groove 3 on the cover plate 2 form a second flow channel; the water inlet end on the bottom plate 1 and the water outlet end on the cover plate 2 are arranged in alignment, and the water outlet end on the bottom plate 1 and the water inlet end on the cover plate 2 are arranged in alignment; one of the two battery pack assemblies 5 is arranged on the side of the bottom plate 1 away from the cover plate 2, and the other battery pack is arranged on the side of the cover plate 2 away from the bottom plate 1.

[0034] The combination of the bottom plate 1, the partition plate 4, and the cover plate 2 forms a first flow channel and a second flow channel; the medium for cooling is located in the first flow channel and the second flow channel, and the cooling medium in the first flow channel and the cooling medium in the second flow channel flow in opposite directions. Thus, the cooling medium in the first flow channel or the second flow channel can transfer heat to evenly the temperature of the water inlet end and the water outlet end, making the overall heat dissipation of the battery pack assembly 5 more uniform.

[0035] The following further elaborates on the specific structure of the heat dissipation component in the battery pack assembly 5 of this embodiment:

[0036] In this embodiment, the first flow channel located in the cooling area includes a plurality of first straight channels 6 and a plurality of first arc channels 7. A first arc channel 7 is arranged between adjacent first straight channels 6, and both ends of the first arc channel 7 are communicated with the corresponding adjacent first straight channels 6; the second flow channel located in the cooling area includes a plurality of second straight channels 8 and a plurality of second arc channels 9. A second arc channel 9 is arranged between adjacent second straight channels 8, and both ends of the second arc channel 9 are communicated with the corresponding adjacent second straight channels 8;

[0037] The first straight channels 6 and the second straight channels 8 are arranged in a staggered manner; that is, in the orthographic projection, the first straight channels 6 are located between adjacent second straight channels 8.

[0038] Since the battery pack components 5 are closely arranged on the bottom plate 1 or the cover plate 2, the temperature at the surface of the bottom plate 1 or the cover plate 2 directly passed by the cooling medium is relatively low, and the battery pack components 5 in contact with the relatively low-temperature surfaces of the bottom plate 1 and the cover plate 2 dissipate heat faster; however, the heat dissipation effect of the battery pack components 5 is poor where the cooling medium does not directly pass; therefore, the first direct current channels 6 in the first flow channel and the second direct current channels 8 in the second flow channel are arranged in a staggered manner, whereby the cooling grooves in the cooling area are arranged in an S shape and in a staggered manner, and through the heat transfer of the partition plate 4, the temperatures of the surfaces of the bottom plate 1 and the cover plate 2 can be made more uniform, and then the overall heat dissipation of the battery pack components 5 can be made more uniform.

[0039] In this embodiment, the water inlet end and the water outlet end are located on the same side of the battery pack components 5.

[0040] Further explanation, during the later installation process, the water inlet joint is connected to the water inlet end, and the water outlet joint is connected to the water outlet end, so that the water inlet joint and the water outlet joint are located on the same side. Thus, it is more convenient both during the assembly process and during the later disassembly and inspection process.

[0041] In this embodiment, the partition plate 4 is a heat conducting plate.

[0042] Further explanation, through the partition plate 4, the heat of the cooling medium in the first flow channel and the second flow channel can be better replaced, so that the overall temperatures of the bottom plate 1, the cover plate 2, and the partition plate 4 are more uniform, and then the heat absorption effect on the battery pack components 5 can be made more uniform.

[0043] In this embodiment, both the bottom plate 1 and the cover plate 2 are made of solder plates.

[0044] In this embodiment, sealing grooves 10 are provided on the side wall of the partition plate 4 facing the bottom plate 1 and on the side wall of the partition plate 4 facing the cover plate 2. The sealing grooves 10 are located outside the cooling grooves 3; sealing strips are arranged in the sealing grooves 10, and the sealing strips abut against the corresponding bottom plate 1 or end cover.

[0045] Further setting, through the sealing grooves 10, the overall sealing performance is better. Of course, the partition plate 4 and the bottom plate 1, and the partition plate 4 and the cover plate 2 also need to be welded to make the sealing performance better and the connection strength between the partition plate 4 and the bottom plate 1 and the cover plate 2 higher.

[0046] In this embodiment, a plurality of heat dissipation ribs 12 are provided on the partition plate 4, and the heat dissipation ribs 12 extend outwardly from the bottom plate 1 and the cover plate 2.

[0047] Refer to Figure 4 , in this embodiment, the heat dissipation ribs 12 are bent.

[0048] Further, after the battery pack assembly 5 and the heat sink (the bottom plate 1, the cover plate 2, and the partition plate 4) are combined into one body, a housing is sleeved outside for wrapping and protecting the battery pack assembly 5 and the heat sink; the heat dissipation ribs 12 can extend to the outside of the housing, so that the partition plate 4 can dissipate heat further, and further accelerate the overall heat dissipation speed of the heat sink.

[0049] In order to reduce the area occupied by the heat dissipation ribs 12 and make the overall device more compact, the heat dissipation ribs 12 are bent.

[0050] Embodiment 2:

[0051] Refer to Figure 5 and Figure 6 , the difference between this Embodiment 2 and Embodiment 1 is that: a first matching groove 13 is provided on the side wall of the partition plate 4 facing the bottom plate 1, and a second matching groove 14 is provided on the side wall of the partition plate 4 facing the cover plate 2. The inner wall of the first matching and the inner wall of the cooling groove 3 on the bottom plate 1 form a first flow channel, and the inner wall of the second matching and the inner wall of the cooling groove 3 on the cover plate 2 form a second flow channel.

[0052] Further explanation, through the settings of the first matching groove 13 and the second matching groove 14, the flow cross-sections of the first flow channel and the second flow channel are enlarged, so that the flow rate of the cooling medium entering increases, thereby accelerating heat dissipation.

[0053] The above has described the embodiments of the present invention in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, provided that these changes fall within the scope of the claims of the present invention and their equivalent technologies, they still fall within the protection scope of the present invention.

Claims

1. A heat dissipation component in a battery pack assembly, characterized in that, include: A bottom plate and a cover plate, wherein the bottom plate and the cover plate are both provided with cooling grooves, wherein the cooling grooves include a water inlet, a water outlet, and a cooling zone, wherein the water inlet and the water outlet are both connected to the corresponding cooling zone, the water inlet and the water outlet penetrate the corresponding bottom plate or the cover plate, and the cooling grooves of the cooling zone are arranged in an S shape on the corresponding side wall of the bottom plate or the cover plate; A partition plate is arranged between the bottom plate and the cover plate, wherein the side wall of the partition plate and the inner wall of the cooling groove on the bottom plate form a first flow channel, and the side wall of the partition plate and the inner wall of the cooling groove on the cover plate form a second flow channel; The water inlet end on the bottom plate and the water outlet end on the cover plate are aligned, and the water outlet end on the bottom plate and the water inlet end on the cover plate are aligned; Two battery pack assemblies, one of the battery pack assemblies is arranged on the side of the bottom plate away from the cover plate, and the other of the battery pack assemblies is arranged on the side of the cover plate away from the bottom plate.

2. The heat dissipation component in the battery pack assembly according to claim 1, characterized in that The first flow channel located in the cooling zone includes a plurality of first direct current channels and a plurality of first arc-shaped channels, a first arc-shaped channel is arranged between adjacent first direct current channels, and two ends of the first arc-shaped channel are connected to the corresponding adjacent first direct current channels; The second flow channel located in the cooling zone includes a plurality of second direct current channels and a plurality of second arc-shaped channels, a second arc-shaped channel is arranged between adjacent second direct current channels, and two ends of the second arc-shaped channel are connected to the corresponding adjacent second direct current channels; The first direct current channel and the second direct current channel are arranged in a staggered manner.

3. The heat dissipation component in the battery pack assembly according to claim 2, characterized in that, The water inlet and the water outlet are located on the same side of the battery pack assembly.

4. The heat dissipation component in the battery pack assembly according to claim 1, characterized in that, The partition is a heat conducting plate.

5. The heat dissipation component in the battery pack assembly according to claim 1, characterized in that, The bottom plate and the cover plate are both made of brazing material plates.

6. The heat dissipation component in the battery pack assembly according to claim 1, characterized in that The side wall of the partition plate facing the bottom plate and the side wall of the partition plate facing the cover plate are both provided with sealing grooves, and the sealing grooves are located outside the cooling grooves; sealing strips are arranged in the sealing grooves, and the sealing strips abut against the corresponding bottom plate or end cover.

7. The heat dissipation component in the battery pack assembly according to claim 1, characterized in that, The partition plate is provided with a plurality of heat dissipation ribs, and the heat dissipation ribs extend toward the outer sides of the bottom plate and the cover plate.

8. The heat dissipation component in the battery pack assembly according to claim 7, characterized in that, The heat dissipation ribs are arranged in a bent manner.

9. The heat dissipation component in the battery pack assembly according to claim 1, wherein The partition plate is provided with a first matching groove on the side wall facing the bottom plate, and a second matching groove is provided on the side wall facing the cover plate. The first matching inner wall and the inner wall of the cooling groove on the bottom plate form the first flow channel, and the second matching inner wall and the inner wall of the cooling groove on the cover plate form the second flow channel.

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