A battery module and an electrical device

Abstract

This utility model provides a battery module and an electrical device. The battery module includes a bracket, multiple battery cells, and multiple heat sinks. The bracket includes at least multiple mounting slots. The multiple battery cells are disposed in the mounting slots. The multiple heat sinks are at least partially disposed between adjacent battery cells and are used for heat dissipation of the battery cells. The heat sinks are provided with air guide slots to guide external airflow into the heat sinks. By using an electrical device, the heat sinks are disposed between adjacent battery cells, allowing the heat from the battery cells to be transferred to the heat sinks, thereby reducing the temperature of the battery cells. At the same time, the air guide slots can guide external cooling airflow into the heat sinks, reducing the temperature of the heat sinks and thus better removing the heat generated by the battery cells during operation, achieving heat dissipation inside the battery module. Furthermore, without changing the original volume of the heat sinks, the heat dissipation capacity of the entire battery module can be increased, thereby ensuring the product performance of the battery module and extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery module and an electrical device. Background Technology

[0002] A battery module contains multiple cells. The cells dissipate heat through the air, which is insufficient to effectively reduce the temperature of the cells and the battery module, resulting in a large temperature difference between the cells. To reduce the temperature of the cell surface, related technologies add heat sinks and thermally conductive silicone pads to the cell surface and use fans for forced cooling to dissipate the heat. However, the limited volume of the battery module and the restricted internal space prevent the effective placement of heat dissipation materials, affecting the heat dissipation of the cells, thereby reducing the performance of the battery module and its lifespan. Utility Model Content

[0003] The embodiments of this utility model provide a battery module and an electrical device that can improve the technical problem of insufficient heat dissipation within the battery module, which affects the service life of the battery module.

[0004] In a first aspect, embodiments of the present invention provide a battery module, comprising:

[0005] The bracket includes at least multiple mounting slots;

[0006] Multiple battery cells are disposed in the mounting slot; and,

[0007] Multiple heat sinks are at least partially disposed between adjacent battery cells and used for heat dissipation of the battery cells. The heat sinks are provided with air guide grooves and used to guide external airflow into the heat sinks.

[0008] In one embodiment, at least one end of the heat sink is provided with a guide port, which communicates with the air guide groove to guide external airflow into the air guide groove.

[0009] In one embodiment, the cross-sectional area of ​​the end of the guide port away from the air guide groove is greater than the cross-sectional area of ​​the end of the guide port close to the air guide groove.

[0010] In one embodiment, a plurality of the battery cells are arranged in rows and columns, and the heat sink includes at least a first surface and a second surface disposed opposite to each other. The first surface includes a plurality of first mating surfaces, and the second surface includes a plurality of second mating surfaces. The first mating surfaces and the second mating surfaces are arranged alternately at intervals. The first mating surface is in contact with the surface of one of the battery cells, and the second mating surface is in contact with the surface of another adjacent battery cell.

[0011] In one embodiment, the battery cell is configured as a cylindrical battery cell, and both the first mating surface and the second mating surface are arc surfaces. The first mating surface is bonded to one of the battery cells, and the second mating surface is bonded to another adjacent battery cell.

[0012] In one embodiment, a first air supply surface is connected between two adjacent first mating surfaces, and the heat sink is further provided with a first air supply hole communicating with the air guide groove, the first air supply hole being opened on the first air supply surface; and / or, a second air supply surface is connected between two adjacent second mating surfaces, and the heat sink is further provided with a second air supply hole communicating with the air guide groove, the second air supply hole being opened on the second air supply surface.

[0013] In one embodiment, the heat sink has the guide port at only one end.

[0014] In one embodiment, the diameter of the first air outlet is D1, and the diameter of the battery cell is D2, wherein the ratio of D1 to D2 is greater than or equal to 0.5 and less than or equal to 1.

[0015] In one embodiment, the diameter of the second air outlet is D3, wherein the ratio of D3 to D2 is greater than or equal to 0.5 and less than or equal to 1.

[0016] In one embodiment, a battery module further includes a plurality of thermally conductive silicone pads located between the battery cell and the heat sink to transfer heat from the battery cell to the heat sink.

[0017] In one embodiment, each of the thermally conductive silicone pads is provided with a plurality of third air supply holes, which are spaced apart and are all connected to the air guide groove.

[0018] In one embodiment, the diameter of the third air outlet is D4, wherein the ratio of D4 to D2 is greater than or equal to 0.5 and less than or equal to 1.

[0019] Secondly, embodiments of this utility model provide an electrical device, including the aforementioned battery module.

[0020] The beneficial effects of the embodiments of this utility model are as follows:

[0021] By placing heat sinks between adjacent battery cells, the heat generated by the cells during operation can be transferred to the heat sinks, thereby reducing the cell temperature. Simultaneously, by incorporating air ducts on the heat sinks, external cooling airflow is guided into the heat sinks, further lowering their temperature and effectively dissipating the heat generated by the cells during operation, thus achieving heat dissipation within the battery module. Using this battery module also increases the overall heat dissipation capacity of the battery module without altering the original volume of the heat sinks, thereby ensuring the product performance of the battery module and extending its lifespan. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the battery module provided in an embodiment of this utility model;

[0024] Figure 2 This is a cross-sectional view of the battery module provided in an embodiment of this utility model;

[0025] Figure 3 yes Figure 1 The diagram shows the structure of the heat sink in the battery module.

[0026] Figure 4 yes Figure 2 A magnified view of a portion of point A in the battery module shown;

[0027] Figure 5 yes Figure 3 A magnified view of a portion of the heat sink at point B.

[0028] Figure Labels

[0029] 1. Battery module;

[0030] 100. Bracket;

[0031] 200. Battery cells;

[0032] 300, Heat sink; 301, Air guide channel; 302, Air guide port; 303, First surface; 3031, First mating surface; 3032, First air supply surface; 3033, First air supply hole; 304, Second surface; 3041, Second mating surface; 3042, Second air supply surface; 3043, Second air supply hole;

[0033] 400. Thermal conductive silicone pad; 401. Third air inlet. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0035] Reference Figures 1 to 2 This utility model provides a battery module 1, including a bracket 100, a plurality of battery cells 200 and a plurality of heat sinks 300. The bracket 100 includes at least a plurality of mounting slots. The plurality of battery cells 200 are disposed in the mounting slots. The plurality of heat sinks 300 are at least partially disposed between adjacent battery cells 200 and are used for heat dissipation of the battery cells 200. The heat sinks 300 are provided with air guide slots 301 and are used to guide external airflow into the heat sinks 300.

[0036] By placing heat sinks 300 between adjacent battery cells 200, the heat generated by the battery cells 200 during operation can be transferred to the heat sinks 300, thereby reducing the temperature of the battery cells 200. At the same time, by setting air guide slots 301 on the heat sinks 300, the air guide slots 301 can guide the external cooling airflow into the heat sinks 300, thereby reducing the temperature of the heat sinks 300 and better removing the heat generated by the battery cells 200 during operation, thus achieving heat dissipation inside the battery cell 200 module. Using this battery module 1 can also increase the heat dissipation capacity of the entire battery module 1 without changing the original volume of the heat sinks 300, thereby ensuring the product performance of the battery module 1 and extending the service life of the battery module 1.

[0037] In some embodiments, refer to Figure 2 and Figure 3The heat sink 300 has a guide port 302 at at least one end, which communicates with the air guide groove 301 to guide external airflow into the air guide groove 301. In practical use, a fan can be installed outside the battery module 1, with the fan located near the guide port 302. The guide port 302 can guide the cooling airflow blown by the fan into the air guide groove 301, thereby ensuring that the external airflow can flow evenly through the heat sink 300. This effectively removes the heat generated by the battery cell 200 during operation and prevents heat accumulation on the heat sink 300, thus preventing any impact on the heat dissipation efficiency of the battery module 1.

[0038] In some embodiments, refer to Figure 3 and Figure 5 The cross-sectional area of ​​the end of the guide opening 302 away from the air guide groove 301 is larger than the cross-sectional area of ​​the end of the guide opening 302 close to the air guide groove 301. That is, in this embodiment, the inner diameter of the guide opening 302 gradually decreases along the direction away from the air guide groove 301, thereby enabling the heat sink 300 to more effectively capture and gather the surrounding external airflow, and reducing the resistance when the external airflow enters the air guide groove 301, allowing more cooling airflow to smoothly enter the interior of the heat sink 300, thereby enhancing the heat dissipation effect of the heat sink 300.

[0039] In some embodiments, refer to Figures 2 to 4 The multiple battery cells 200 are arranged in rows and columns. The heat sink 300 includes at least a first surface 303 and a second surface 304 disposed opposite to each other. The first surface 303 includes a plurality of first mating surfaces 3031, and the second surface 304 includes a plurality of second mating surfaces 3041. The first mating surfaces 3031 and the second mating surfaces 3041 are arranged alternately at intervals. The first mating surface 3031 is in contact with the surface of one of the battery cells 200, and the second mating surface 3041 is in contact with the surface of another adjacent battery cell 200. It should be further explained that in this embodiment, the battery cell 200 is a circular battery cell 200, and both the first mating surface 3031 and the second mating surface 3041 are set in an arc shape, which can achieve mutual matching with the shape of the battery cell 200. Thus, by setting multiple first mating surfaces 3031 and second mating surfaces 3041, the heat sink 300 can fit more closely to the shape of the battery cell 200, improve the fit between the heat sink 300 and the battery cell 200, and make full use of the two surfaces of the heat sink 300. The heat sink 300 can contact multiple battery cells 200 at the same time, and quickly conduct the heat generated by the battery cell 200 to the heat sink 300, and then dissipate it to the surrounding environment through the heat sink 300, so as to achieve efficient heat dissipation of the battery module 1 in a limited space.

[0040] Understandably, the alternating mating surfaces on the heat sink 300 allow the heat sink 300 to make uniform contact with the battery cell 200, thereby avoiding localized overheating on the heat sink 300 and further improving the overall heat dissipation performance of the battery module 1.

[0041] In one embodiment, the battery cell 200 is configured as a cylindrical battery cell 200, and both the first mating surface 3031 and the second mating surface 3041 are arc surfaces. The first mating surface 3031 is bonded to one battery cell 200, and the second mating surface 3041 is bonded to another adjacent battery cell 200.

[0042] In some embodiments, refer to Figures 2 to 4 A first air supply surface 3032 is connected between two adjacent first mating surfaces 3031. The heat sink 300 is also provided with a first air supply hole 3033 communicating with the air guide groove 301. The first air supply hole 3033 is opened on the first air supply surface 3032. In this embodiment, through the design of the first air supply hole 3033 and the first air supply surface 3032, the heat sink 300 can blow external airflow through the first air supply hole 3033 to the inside of the battery cell 200 module, accelerating the conduction and dissipation of heat from the battery cell 200. The design of the first air supply surface 3032 can evenly guide external airflow to the surface of each battery cell 200, avoiding insufficient or excessive local airflow, thereby achieving a more uniform heat dissipation effect.

[0043] In some embodiments, refer to Figures 2 to 4 A second air supply surface 3042 connects two adjacent second mating surfaces 3041. The heat sink 300 is also provided with a second air supply hole 3043 communicating with the air guide groove 301. The second air supply hole 3043 is opened on the second air supply surface 3042. In this embodiment, through the design of the first air supply hole 3033 and the first air supply surface 3032, the heat sink 300 can blow external airflow through the second air supply hole 3043 into the inside of the battery cell 200 module, accelerating the conduction and dissipation of heat from the battery cell 200. Furthermore, the design of the second air supply surface 3042 can evenly guide external airflow to the surface of each battery cell 200, avoiding insufficient or excessive local airflow, thereby achieving a more uniform heat dissipation effect.

[0044] It should also be noted that, referring to Figures 2 to 4In this embodiment, since the first air supply surface 3032 is connected between two adjacent first mating surfaces 3031, and the first mating surfaces 3031 are in contact with the battery cell 200, the first air supply surface 3032 is located between two adjacent battery cells 200, that is, the first air supply hole 3033 is located between two adjacent battery cells 200, which allows external cooling gas to be delivered between the two adjacent battery cells 200. Similarly, since the second air supply surface 3042 is connected between two adjacent second mating surfaces 3041, and the second mating surfaces 3041 are in contact with the battery cell 200, the second air supply surface 3042 is located between two adjacent battery cells 200, that is, the second air supply hole 3043 is located between two adjacent battery cells 200, which allows external cooling gas to be delivered between the two adjacent battery cells 200, thereby achieving a better heat dissipation effect of the heat sink 300.

[0045] Understandably, referring to Figures 2 to 4 In this embodiment, the first air supply surface 3032 and the second air supply surface 3042 both protrude toward the side of the opposite battery cell 200, so that the external airflow can flow better between the two adjacent battery cells 200, ensuring the heat dissipation effect of the battery module 1.

[0046] In some embodiments, refer to Figure 3 and Figure 5 The heat sink 300 has the guide port 302 at only one end, and further, the end of the heat sink 300 opposite to the guide port 302 is closed. In this embodiment, the above arrangement ensures that the external airflow flows along a specific path and flows smoothly out from the first air outlet 3033 or the second air outlet 3043, thus ensuring the heat dissipation effect of the battery module 1.

[0047] In some embodiments, the diameter of the first air outlet 3033 is D1, and the diameter of the battery cell 200 is D2, wherein the ratio of D1 to D2 is greater than or equal to 0.5 and less than or equal to 1. This design ensures that the diameter of the first air outlet 3033 and the diameter of the battery cell 200 are in an appropriate ratio, thereby achieving effective heat dissipation. If the diameter of the first air outlet 3033 is too large, it may cause airflow dispersion, making it impossible to concentrate cooling on the battery cell 200; if the diameter of the first air outlet 3033 is too small, it may cause insufficient airflow, failing to meet heat dissipation requirements.

[0048] In some embodiments, the diameter of the second air outlet 3043 is D3, wherein the ratio of D3 to D2 is greater than or equal to 0.5 and less than or equal to 1. This design ensures that the diameter of the second air outlet 3043 is in an appropriate proportion to the diameter of the battery cell 200, thereby achieving effective heat dissipation. If the diameter of the second air outlet 3043 is too large, it may cause airflow dispersion, making it impossible to concentrate cooling on the battery cell 200; if the diameter of the second air outlet 3043 is too small, it may cause insufficient airflow, failing to meet heat dissipation requirements.

[0049] In some embodiments, refer to Figure 3 A battery module 1 further includes a plurality of thermally conductive silicone pads 400, which are located between the battery cell 200 and the heat sink 300 to transfer heat from the battery cell 200 to the heat sink 300. The thermally conductive silicone pads 400 have good thermal conductivity, flexibility, and electrical insulation, enabling them to quickly conduct the heat generated by the battery cell 200 during operation to the heat sink 300, effectively reducing the operating temperature of the battery cell 200. Furthermore, the softness of the thermally conductive silicone pads 400 can fill the tiny gaps between the battery cell 200 and the heat sink 300, improving heat transfer efficiency, and also buffering external pressure to protect the battery cell 200 from mechanical damage.

[0050] Understandably, in practice, the thermally conductive silicone pad 400 is located between the heat sink 300 and the battery cell 200. After the thermally conductive silicone pad 400 is attached to the surface of the heat sink 300, it is then attached to the surface of the battery cell 200.

[0051] In some embodiments, refer to Figure 3 Each of the thermally conductive silicone pads 400 is provided with multiple third air outlets 401. These third air outlets 401 on the same thermally conductive silicone pad 400 are spaced apart and are all connected to the air guide groove 301. Furthermore, in this embodiment, the first air outlet 3033, the second air outlet 3043, the third air outlets 401, and the air guide groove 301 are all connected. This allows a complete airflow channel to be formed between the heat sink 300 and the thermally conductive silicone pad 400, ensuring that external airflow can smoothly pass between two adjacent battery cells 200, thereby reducing heat accumulation on the heat sink 300.

[0052] In some embodiments, the diameter of the third air outlet 401 is D4, wherein the ratio of D4 to D2 is greater than or equal to 0.5 and less than or equal to 1. This design ensures that the diameter of the third air outlet 401 is in an appropriate proportion to the diameter of the battery cell 200, thereby achieving effective heat dissipation. If the diameter of the third air outlet 401 is too large, it may cause airflow dispersion, making it impossible to concentrate cooling on the battery cell 200; if the diameter of the third air outlet 401 is too small, it may cause insufficient airflow, failing to meet heat dissipation requirements.

[0053] In summary, when the heat sink 300 is placed between adjacent battery cells 200, the battery cells 200 can transfer heat to the heat sink 300. Since the heat sink 300 has an air guide 301 with a guide port 302 on one side, external cooling gas can be smoothly guided into the air guide 301 and carry the heat generated by the battery cells 200 out of the battery module 1. The thermally conductive silicone pad 400 can transfer the heat from the battery cells 200 to the heat sink 300. The first air outlet 3033, the second air outlet 3043, and the third air outlet 401 allow external cooling gas to flow between two adjacent battery cells 200. Therefore, without changing the volume of the battery module 1, the heat dissipation capacity of the entire battery module 1 can be increased, thereby ensuring the product performance of the battery module 1 and extending its service life.

[0054] Secondly, this utility model embodiment provides an electrical device, which includes the battery module 1.

[0055] This electrical device possesses all the exclusive beneficial effects of the aforementioned battery module 1:

[0056] By placing heat sinks 300 between adjacent battery cells 200, the heat generated by the battery cells 200 during operation can be transferred to the heat sinks 300, thereby reducing the temperature of the battery cells 200. At the same time, by setting air guide slots 301 on the heat sinks 300, the air guide slots 301 can guide the external cooling airflow into the heat sinks 300, thereby reducing the temperature of the heat sinks 300 and better removing the heat generated by the battery cells 200 during operation, thus achieving heat dissipation inside the battery cell 200 module. Using this battery module 1 can also increase the heat dissipation capacity of the entire battery module 1 without changing the original volume of the heat sinks 300, thereby ensuring the product performance of the battery module 1 and extending the service life of the battery module 1.

[0057] In summary, when the heat sink 300 is placed between adjacent battery cells 200, the battery cells 200 can transfer heat to the heat sink 300. Since the heat sink 300 has an air guide 301 with a guide port 302 on one side, external cooling gas can be smoothly guided into the air guide 301 and carry the heat generated by the battery cells 200 out of the battery module 1. The thermally conductive silicone pad 400 can transfer the heat from the battery cells 200 to the heat sink 300. The first air outlet 3033, the second air outlet 3043, and the third air outlet 401 allow external cooling gas to flow between two adjacent battery cells 200. Therefore, without changing the volume of the battery module 1, the heat dissipation capacity of the entire battery module 1 can be increased, thereby ensuring the product performance of the battery module 1 and extending its service life.

[0058] Electrical equipment can include, but is not limited to, vehicles, smart wearable devices, mobile terminals, home appliances, and medical devices; this application does not limit the scope of these categories. Vehicles include, but are not limited to, cars, buses, trains, ships, and aircraft. Smart wearable devices include, but are not limited to, smartwatches, smart bracelets, and neck massagers. Mobile terminals include, but are not limited to, smartphones, laptops, tablets, and POS (point-of-sales) machines. Home appliances include, but are not limited to, televisions, washing machines, air conditioners, rice cookers, smart robot vacuums, and smart lights. Medical devices include, but are not limited to, infrared electronic thermometers, pulse oximeters, and body composition analyzers.

[0059] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A battery module, characterized by, include: The bracket includes at least multiple mounting slots; Multiple battery cells are disposed in the mounting slot; as well as, Multiple heat sinks are at least partially disposed between adjacent battery cells and used for heat dissipation of the battery cells. The heat sinks are provided with air guide grooves and used to guide external airflow into the heat sinks.

2. The battery module of claim 1, wherein At least one end of the heat sink is provided with a guide port, which is connected to the air guide groove to guide external airflow into the air guide groove.

3. The battery module of claim 2, wherein, The cross-sectional area of ​​the end of the guide port away from the air guide groove is greater than the cross-sectional area of ​​the end of the guide port close to the air guide groove.

4. The battery module of claim 2, wherein, The multiple battery cells are arranged in rows and columns. The heat sink includes at least a first surface and a second surface that are arranged opposite to each other. The first surface includes multiple first mating surfaces, and the second surface includes multiple second mating surfaces. The first mating surfaces and the second mating surfaces are arranged alternately at intervals. The first mating surface is in contact with the surface of one of the battery cells, and the second mating surface is in contact with the surface of another adjacent battery cell.

5. The battery module of claim 4, wherein, The battery cell is configured as a cylindrical battery cell, and both the first mating surface and the second mating surface are arc surfaces. The first mating surface is bonded to one of the battery cells, and the second mating surface is bonded to another adjacent battery cell.

6. The battery module of claim 4, wherein, A first air supply surface is connected between two adjacent first mating surfaces, and the heat sink is also provided with a first air supply hole communicating with the air guide groove, the first air supply hole being opened on the first air supply surface; and / or, a second air supply surface is connected between two adjacent second mating surfaces, and the heat sink is also provided with a second air supply hole communicating with the air guide groove, the second air supply hole being opened on the second air supply surface.

7. The battery module of claim 6, wherein, The heat sink has the guide port on only one end.

8. The battery module of claim 6, wherein, The diameter of the first air outlet is D1, and the diameter of the battery cell is D2, wherein the ratio of D1 to D2 is greater than or equal to 0.5 and less than or equal to 1.

9. The battery module of claim 6, wherein, The diameter of the battery cell is D2, and the diameter of the second air outlet is D3, wherein the ratio of D3 to D2 is greater than or equal to 0.5 and less than or equal to 1.

10. The battery module of any one of claims 1-9, wherein, It also includes multiple thermally conductive silicone pads, which are located between the battery cell and the heat sink to transfer heat from the battery cell to the heat sink.

11. The battery module of claim 10, wherein, Each of the thermally conductive silicone pads is provided with multiple third air supply holes. The multiple third air supply holes located on the same thermally conductive silicone pad are arranged at intervals, and the multiple third air supply holes are all connected to the air guide groove.

12. The battery module of claim 11, wherein, The diameter of the battery cell is D2, and the diameter of the third air outlet is D4, wherein the ratio of D4 to D2 is greater than or equal to 0.5 and less than or equal to 1.

13. An electrical device, characterized by Includes the battery module as described in any one of claims 1-12.

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