Heat dissipation device for high-capacity fast-charging battery
Patent Information
- Application Number
- CN202522375826.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-10
AI Technical Summary
[0002]随着消费电子、储能设备对续航能力的需求升级，高容量快充电池已成为主流配置，其不仅需集成多节电芯（如第一电芯、第二电芯）以提升容量，还需支持大电流快充（通常≥65W）以缩短补电时间；但快充过程中，电池电芯会在短时间内产生大量热量，一方面，电芯能量密度提升导致单位体积发热量增加；另一方面，快充时的大电流会进一步加剧热堆积，若热量无法及时散出，会导致电芯温度快速攀升
[0013]作为一种优选方案，所述铝合金中框包括有中框主体和设置于中框主体正面和背面上的第一围挡部和第二围挡部，所述第一围挡部设置于中框主体的正面后端，以围构形成第一放置位；所述第二围挡部设置于中框主体的背面后端，以围构形成第二放置位。
Smart Images
Figure CN224862293U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat dissipation devices for high-capacity fast-charging batteries, and in particular to a heat dissipation device for high-capacity fast-charging batteries. Background Technology
[0002] With the increasing demand for extended battery life in consumer electronics and energy storage devices, high-capacity fast-charging batteries have become the mainstream configuration. These batteries not only need to integrate multiple cells (such as the first cell and the second cell) to increase capacity, but also need to support high-current fast charging (usually ≥65W) to shorten charging time. However, during fast charging, the battery cells will generate a lot of heat in a short period of time. On the one hand, the increased energy density of the cells leads to an increase in heat generation per unit volume; on the other hand, the high current during fast charging will further aggravate heat accumulation. If the heat cannot be dissipated in time, the cell temperature will rise rapidly. Existing fast-charging batteries typically use a conventional aluminum alloy frame for heat dissipation. During fast charging, the battery heat cannot be dissipated quickly, resulting in excessively high battery and device temperatures. Users may feel the heat is too hot to touch, posing a risk of burns to the user's skin and battery fire.
[0003] Later, a battery heat dissipation structure appeared on the market, which uses a combination of sheet-like thermally conductive silicone pads and heat sinks to transfer heat. However, this design has obvious defects: for example, the structure is only designed for heat conduction in one direction and does not consider the synchronous heat dissipation needs of multiple cells (such as the first and second cells arranged on both sides), which can easily lead to an imbalance problem where one side of the cell overheats and the other side has redundant heat dissipation. Secondly, the heat sink and the shell only transfer heat through edge contact and there is no precise installation and positioning structure. This not only results in a long heat conduction path and low efficiency, but also may cause heat to be trapped due to assembly gaps. This can easily lead to heat accumulation, accelerate cell aging, and shorten the cycle life of high-capacity batteries.
[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content
[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a heat dissipation device for high-capacity fast-charging batteries. Through the structural design and cooperation of an aluminum alloy frame, a first heat dissipation component, and a second heat dissipation component, in use, the first and second heat dissipation components respectively attach to the heat-generating areas of the first and second battery cells to achieve targeted heat absorption on both sides; at the same time, the second heat dissipation component is thermally connected to the first heat dissipation component, so that the heat of the battery cells on both sides can be gathered to the same heat dissipation path and dissipated outward from the aluminum alloy frame, making the heat conduction path shorter and the heat distribution more uniform, effectively avoiding unilateral or local heat accumulation.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A heat dissipation device for a high-capacity fast-charging battery includes: An aluminum alloy frame has a front and a back side arranged opposite to each other. Both the front and back sides are recessed with a first placement position and a second placement position for placing a first battery cell and a second battery cell. The front side of the aluminum alloy frame has a first mounting position and a second mounting position for mounting and positioning a first heat dissipation component, and the first and second mounting positions are connected. The first mounting position is located within the first placement position. The second placement position has a third mounting position for mounting and positioning a second heat dissipation component, and the third mounting position is connected to the first mounting position. The first heat dissipation assembly includes a first heat dissipation component, which has a first heat-absorbing part for attaching to the heat-generating area of the first battery cell to absorb the heat generated by the battery cell and a first heat dissipation part for conducting the heat generated by the battery cell absorbed by the first heat-absorbing part to the outside of the aluminum alloy frame; the first heat-absorbing part is installed and positioned in a first mounting position, and the first heat dissipation part is installed and positioned in a second mounting position. The second heat dissipation assembly includes a second heat dissipation component. The second heat dissipation component has a second heat-absorbing part for attaching to the heat-generating area of the battery cell to absorb the heat generated by the battery cell and a second heat dissipation part for conducting the heat absorbed by the second heat-absorbing part to the first heat dissipation part. The second heat dissipation part is thermally connected to the first heat dissipation part so as to conduct the heat absorbed by the second heat-absorbing part to the first heat dissipation part for dissipation.
[0007] As a preferred embodiment, both the first and second heat sinks are sheet-shaped heat sinks. The sheet-shaped structure design allows for a larger planar contact area, enabling complete surface contact with the heat-generating area of the battery cell. This effectively reduces the contact gap between the heat sink and the battery cell, improves heat absorption efficiency, and avoids local heat retention.
[0008] As a preferred option, both the first and second heat sinks are made of copper. Under the same temperature difference, the heat transfer speed of the copper heat sink is improved, which can quickly conduct the instantaneous heat generated by the battery cell from the heat absorption part to the heat dissipation part, avoiding the accumulation of heat on the surface of the battery cell. In addition, copper has excellent corrosion resistance and structural stability.
[0009] As a preferred embodiment, the second mounting position includes a first front mounting position and a second front mounting position, the first mounting position includes a second left mounting position and a second right mounting position, the first front mounting position is connected to the second left mounting position, and the second front mounting position is connected to the second right mounting position; the third mounting position includes a third left mounting position and a third right mounting position; the second left mounting position and the third left mounting position are vertically connected, and the second right mounting position and the third right mounting position are vertically connected.
[0010] As a preferred embodiment, the first heat sink includes a first heat sink and a second heat sink, and the second heat sink includes a third heat sink and a fourth heat sink; both the first and second heat sinks include a first heat absorption portion and a first heat dissipation portion, and both the third and fourth heat sinks include a second heat absorption portion and a second heat dissipation portion. The first heat-absorbing part of the first heat sink is installed and positioned in the second left mounting position, and the first heat-dissipating part of the first heat sink is installed and positioned in the first front mounting position. The second heat-absorbing part of the second heat sink is installed and positioned in the second right mounting position, and the second heat-dissipating part of the second heat sink is installed and positioned in the second front mounting position; The second heat-absorbing part of the third heat sink is installed and positioned in the third left mounting position, and the second heat-absorbing part of the third heat sink is thermally connected to the first heat-dissipating part of the first heat sink. The second heat-absorbing part of the fourth heat sink is installed and positioned in the third right mounting position; the second heat-absorbing part of the fourth heat sink is thermally connected to the first heat-dissipating part of the second heat sink. By separating and correspondingly installing multiple heat sinks, the heat dissipation division is further refined, and the heat dissipation targeting and efficiency are improved: achieving zoned heat absorption and directional heat dissipation.
[0011] As a preferred embodiment, the first heat dissipation part is configured to conform to the first front mounting position, and the second heat dissipation part is configured to conform to the second front mounting position.
[0012] As a preferred embodiment, the first heat dissipation part extends from the front end of the first heat absorption part by bending, and the second heat dissipation part extends from the front end of the second heat absorption part.
[0013] As a preferred embodiment, the aluminum alloy frame includes a frame body and a first enclosure and a second enclosure disposed on the front and back of the frame body. The first enclosure is disposed at the rear end of the front of the frame body to form a first placement position; the second enclosure is disposed at the rear end of the back of the frame body to form a second placement position.
[0014] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves targeted heat absorption on both sides by using the structural design and cooperation of the aluminum alloy frame, the first heat dissipation component, and the second heat dissipation component. In use, the first heat dissipation component and the second heat dissipation component are respectively attached to the heat-generating areas of the first battery cell and the second battery cell. At the same time, the second heat dissipation part is thermally connected to the first heat dissipation part, so that the heat of the battery cells on both sides can be gathered to the same heat dissipation path and dissipated to the outside of the aluminum alloy frame, making the heat conduction path shorter and the heat distribution more uniform, effectively avoiding heat accumulation on one side or in a localized area. Secondly, the first mounting position, the second mounting position, and the third mounting position on the aluminum alloy frame are respectively matched with the first heat dissipation component and the second heat dissipation component. The first mounting position is set in the first placement position and the third mounting position is set in the second placement position to ensure that the heat absorption part of the heat dissipation component can be closely attached to the heat-generating area of the battery cell to avoid heat conduction loss due to assembly gaps. The third mounting position connects to the second mounting position, ensuring a reliable thermal connection between the second heat dissipation unit and the first heat dissipation unit, enhancing the structural stability of the heat dissipation component and the middle frame, and preventing heat dissipation failure caused by equipment vibration. Furthermore, all heat dissipation components are embedded in the mounting positions of the mid-frame, eliminating the need for additional internal space and adapting to the compact layout requirements of high-capacity fast-charging batteries. At the same time, the aluminum alloy mid-frame itself has auxiliary heat dissipation functions, which, together with the synergistic effect of dual heat dissipation components, significantly reduce the risk of thermal runaway and ensure the safety and lifespan of high-capacity fast-charging batteries.
[0015] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of an embodiment of the present utility model; Figure 3 This is an exploded view of an embodiment of the present utility model; Figure 4 This is another exploded view of an embodiment of the present utility model; Figure 5 This is another structural schematic diagram of an embodiment of the present utility model; Figure 6 This is a schematic diagram illustrating an embodiment of this utility model.
[0017] Explanation of reference numerals in the attached diagram: 10. Aluminum alloy middle frame 11. First placement position 12. Second placement position 13. First installation position 14. Second mounting position 15. Third mounting position 131. Second left mounting position; 132. Second right mounting position 141. First front mounting position; 142. Second front mounting position 151. Third left mounting position; 152. Third right mounting position 16. First enclosure section 17. Second enclosure section 20. First heat dissipation assembly; 21. First heat dissipation component 211. First heat-absorbing part; 212. First heat-dissipating part 22. First heat sink 23. Second heat sink 30. Second heat dissipation assembly; 31. Second heat dissipation component 311. Second heat absorption part; 312. Second heat dissipation part 32. Third heatsink 33. Fourth heatsink 40. Integrated circuit board. Detailed Implementation
[0018] Please refer to Figures 1 to 6 As shown, it illustrates the specific structure of an embodiment of the present invention.
[0019] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] A heat dissipation device for a high-capacity fast-charging battery includes an aluminum alloy frame 10, a first heat dissipation component 20, and a second heat dissipation component 30.
[0021] The aluminum alloy frame 10 has a front and a back side arranged opposite to each other. Both the front and back sides are recessed with a first placement position 11 and a second placement position 12 for placing the first battery cell and the second battery cell. The front side of the aluminum alloy frame 10 has a first mounting position 13 and a second mounting position 14 for mounting and positioning the first heat dissipation assembly 20, and the first mounting position 13 and the second mounting position 14 are connected. The first mounting position 13 is located within the first placement position 11. The second placement position 12 has a third mounting position 15 for mounting and positioning the second heat dissipation assembly 30, and the third mounting position 15 is connected to the first mounting position 13. Preferably, the second mounting position 14 includes a first front mounting position 141 and a second front mounting position 142, the first mounting position 13 includes a second left mounting position 131 and a second right mounting position 132, the first front mounting position 141 is connected to the second left mounting position 131, and the second front mounting position 142 is connected to the second right mounting position 132; the third mounting position 15 includes a third left mounting position 151 and a third right mounting position 152; the second left mounting position 131 and the third left mounting position 151 are vertically connected, and the second right mounting position 132 and the third right mounting position 152 are vertically connected.
[0022] Preferably, the aluminum alloy frame 10 includes a frame body and a first enclosure 16 and a second enclosure 17 disposed on the front and back sides of the frame body. The first enclosure 16 is disposed at the rear end of the front side of the frame body to form a first placement position 11; the second enclosure 17 is disposed at the rear end of the back side of the frame body to form a second placement position 12.
[0023] The first heat dissipation assembly 20 includes a first heat dissipation component 21, which has a first heat-absorbing part 211 for attaching to the heat-generating area of the first battery cell to absorb the heat generated by the battery cell and a first heat dissipation part 212 for conducting the heat generated by the battery cell absorbed by the first heat-absorbing part 211 to the outside of the aluminum alloy frame 10; the first heat-absorbing part 211 is installed and positioned in the first mounting position 13, and the first heat dissipation part 212 is installed and positioned in the second mounting position 14; The second heat dissipation assembly 30 includes a second heat dissipation component 31. The second heat dissipation component 31 has a second heat-absorbing part 311 for attaching to the heat-generating area of the battery cell to absorb the heat generated by the battery cell, and a second heat dissipation part 312 for conducting the heat generated by the battery cell absorbed by the second heat-absorbing part 311 to the first heat dissipation part 212. The second heat dissipation part 312 is thermally connected to the first heat dissipation part 212 so as to conduct the heat absorbed by the second heat-absorbing part 311 to the first heat dissipation part 212 for dissipation.
[0024] Preferably, the first heat sink 21 and the second heat sink 31 are both sheet-shaped heat sinks. With the sheet-shaped structure design, their planar contact area is larger, which can form a complete surface contact with the heat-generating area of the battery cell, effectively reducing the contact gap between the heat sink and the battery cell, improving heat absorption efficiency, and avoiding local heat retention.
[0025] Preferably, both the first heat sink 21 and the second heat sink 31 are made of copper. Under the same temperature difference, the heat transfer speed of the copper heat sink is improved, which can quickly conduct the instantaneous heat generated by the battery cell from the heat absorption part to the heat dissipation part, avoiding the accumulation of heat on the surface of the battery cell. In addition, copper has excellent corrosion resistance and structural stability.
[0026] Preferably, the first heat sink 21 includes a first heat sink 22 and a second heat sink 23, and the second heat sink 31 includes a third heat sink 32 and a fourth heat sink 33; the first heat sink 22 and the second heat sink 23 each include a first heat absorption portion 211 and a first heat dissipation portion 212, and the third heat sink 32 and the fourth heat sink 33 each include a second heat absorption portion 311 and a second heat dissipation portion 312; preferably, the first heat dissipation portion 212 is configured to conform to the first front mounting position 141, and the second heat dissipation portion 312 is configured to conform to the second front mounting position 142.
[0027] The first heat-absorbing portion 211 of the first heat sink 22 is installed and positioned in the second left mounting position 131, and the first heat-dissipating portion 212 of the first heat sink 22 is installed and positioned in the first front mounting position 141; the second heat-absorbing portion 311 of the second heat sink 23 is installed and positioned in the second right mounting position 132, and the second heat-dissipating portion 312 of the second heat sink 23 is installed and positioned in the second front mounting position 142; preferably, the first heat-dissipating portion 212 is bent and extended from the front end of the first heat-absorbing portion 211, and the second heat-dissipating portion 312 is extended from the front end of the second heat-absorbing portion 311.
[0028] The second heat-absorbing part 311 of the third heat sink 32 is installed and positioned in the third left mounting position 151, and the second heat-absorbing part 311 of the third heat sink 32 is thermally connected to the first heat dissipation part 212 of the first heat sink 22. The second heat-absorbing part 311 of the fourth heat sink 33 is installed and positioned in the third right mounting position 152; the second heat-absorbing part 311 of the fourth heat sink 33 is thermally connected to the first heat-dissipating part 212 of the second heat sink 23. By setting up and installing multiple heat sinks separately and correspondingly, the heat dissipation division is further refined, and the heat dissipation is targeted and efficient: to achieve zoned heat absorption and directional heat dissipation.
[0029] like Figure 6 As shown, the aluminum alloy frame is also provided with a circuit board 40 and an insulating cover.
[0030] The key design feature of this utility model is that, through the structural design and cooperation of the aluminum alloy frame, the first heat dissipation component, and the second heat dissipation component, in use, the first heat dissipation component and the second heat dissipation component respectively attach to the heat-generating areas of the first battery cell and the second battery cell to achieve targeted heat absorption on both sides; at the same time, the second heat dissipation component is thermally connected to the first heat dissipation component, so that the heat of the battery cells on both sides can be gathered to the same heat dissipation path and dissipated to the outside of the aluminum alloy frame, making the heat conduction path shorter and the heat distribution more uniform, effectively avoiding heat accumulation on one side or in a localized manner. Secondly, the first mounting position, the second mounting position, and the third mounting position on the aluminum alloy frame are respectively matched with the first heat dissipation component and the second heat dissipation component. The first mounting position is set in the first placement position and the third mounting position is set in the second placement position to ensure that the heat absorption part of the heat dissipation component can be closely attached to the heat-generating area of the battery cell to avoid heat conduction loss due to assembly gaps. The third mounting position connects to the second mounting position, ensuring a reliable thermal connection between the second heat dissipation unit and the first heat dissipation unit, enhancing the structural stability of the heat dissipation component and the middle frame, and preventing heat dissipation failure caused by equipment vibration. Furthermore, all heat dissipation components are embedded in the mounting positions of the mid-frame, eliminating the need for additional internal space and adapting to the compact layout requirements of high-capacity fast-charging batteries. At the same time, the aluminum alloy mid-frame itself has auxiliary heat dissipation functions, which, together with the synergistic effect of dual heat dissipation components, significantly reduce the risk of thermal runaway and ensure the safety and lifespan of high-capacity fast-charging batteries.
[0031] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A heat dissipation device for a high-capacity fast-charging battery, characterized in that, Including: An aluminum alloy frame has a front and a back side arranged opposite to each other. Both the front and back sides are recessed with a first placement position and a second placement position for placing a first battery cell and a second battery cell. The front side of the aluminum alloy frame has a first mounting position and a second mounting position for mounting and positioning a first heat dissipation component, and the first and second mounting positions are connected. The first mounting position is located within the first placement position. The second placement position has a third mounting position for mounting and positioning a second heat dissipation component, and the third mounting position is connected to the first mounting position. The first heat dissipation assembly includes a first heat dissipation component, which has a first heat-absorbing part for attaching to the heat-generating area of the first battery cell to absorb the heat generated by the battery cell and a first heat dissipation part for conducting the heat generated by the battery cell absorbed by the first heat-absorbing part to the outside of the aluminum alloy frame; the first heat-absorbing part is installed and positioned in a first mounting position, and the first heat dissipation part is installed and positioned in a second mounting position. The second heat dissipation assembly includes a second heat dissipation component. The second heat dissipation component has a second heat-absorbing part for attaching to the heat-generating area of the battery cell to absorb the heat generated by the battery cell and a second heat dissipation part for conducting the heat absorbed by the second heat-absorbing part to the first heat dissipation part. The second heat dissipation part is thermally connected to the first heat dissipation part so as to conduct the heat absorbed by the second heat-absorbing part to the first heat dissipation part for dissipation.
2. The heat dissipation device for a high-capacity fast-charging battery according to claim 1, characterized in that: Both the first heat sink and the second heat sink are sheet-shaped heat sinks.
3. The heat dissipation device for a high-capacity fast-charging battery according to claim 2, characterized in that: Both the first and second heat sinks are made of copper.
4. The heat dissipation device for a high-capacity fast-charging battery according to claim 1, characterized in that: The second mounting position includes a first front mounting position and a second front mounting position. The first mounting position includes a second left mounting position and a second right mounting position. The first front mounting position is connected to the second left mounting position, and the second front mounting position is connected to the second right mounting position. The third mounting position includes a third left mounting position and a third right mounting position. The second left mounting position and the third left mounting position are vertically connected, and the second right mounting position and the third right mounting position are vertically connected.
5. The heat dissipation device for a high-capacity fast-charging battery according to claim 4, characterized in that: The first heat sink includes a first heat sink and a second heat sink, and the second heat sink includes a third heat sink and a fourth heat sink; the first heat sink and the second heat sink each include a first heat absorption part and a first heat dissipation part, and the third heat sink and the fourth heat sink each include a second heat absorption part and a second heat dissipation part. The first heat-absorbing part of the first heat sink is installed and positioned in the second left mounting position, and the first heat-dissipating part of the first heat sink is installed and positioned in the first front mounting position. The second heat-absorbing part of the second heat sink is installed and positioned in the second right mounting position, and the second heat-dissipating part of the second heat sink is installed and positioned in the second front mounting position; The second heat-absorbing part of the third heat sink is installed and positioned in the third left mounting position, and the second heat-absorbing part of the third heat sink is thermally connected to the first heat-dissipating part of the first heat sink. The second heat-absorbing part of the fourth heat sink is installed and positioned in the third right mounting position; the second heat-absorbing part of the fourth heat sink is thermally connected to the first heat-dissipating part of the second heat sink.
6. The heat dissipation device for a high-capacity fast-charging battery according to claim 5, characterized in that: The first heat dissipation part is configured to conform to the first front mounting position, and the second heat dissipation part is configured to conform to the second front mounting position.
7. The heat dissipation device for a high-capacity fast-charging battery according to claim 6, characterized in that: The first heat dissipation part extends from the front end of the first heat absorption part by bending, and the second heat dissipation part extends from the front end of the second heat absorption part.
8. The heat dissipation device for a high-capacity fast-charging battery according to claim 1, characterized in that: The aluminum alloy frame includes a frame body and a first enclosure and a second enclosure disposed on the front and back of the frame body. The first enclosure is disposed at the rear end of the front of the frame body to form a first placement position; the second enclosure is disposed at the rear end of the back of the frame body to form a second placement position.