Battery pack facilitating heat dissipation

Abstract

This application discloses a battery pack with improved heat dissipation, comprising a battery assembly, a mounting bracket, and a housing. The battery assembly includes nickel plates, a protection board, connector wires, and multiple battery cells connected in series and parallel. Heat dissipation holes are provided on opposite sides of the housing. This application utilizes the mounting bracket to physically isolate the series-and-parallel connected battery cells within the battery assembly, creating gaps between adjacent cells and increasing their heat dissipation area, thus accelerating heat dissipation. Simultaneously, by providing heat dissipation holes on both sides of the upper cover and lower frame, the relatively positioned holes allow the battery assembly installed within the housing to further dissipate heat rapidly under air convection. Therefore, the battery pack provided by this application effectively enhances heat dissipation and can be used in continuous high-current operating environments. It solves the technical problem in the prior art where poor heat dissipation during continuous high-current operation leads to rapid performance degradation and short lifespan of the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a battery pack that facilitates heat dissipation. Background Technology

[0002] With the rapid development of the home appliance and consumer electronics industries, lithium batteries, as environmentally friendly and recyclable components, are facing increasing demands on performance as new electrical products become more diverse and functionally integrated. For example, emerging fields such as high-power robotic vacuum cleaners, vacuum equipment, power tools, and related outdoor electronic products all involve continuous high-current loads. Under these conditions, conventionally designed battery packs will experience overheating and short battery life, leading to unstable performance and ultimately rapid performance degradation and a short lifespan. Therefore, this application provides a heat-dissipating battery pack to address the aforementioned technical problems. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a battery pack that facilitates heat dissipation, comprising:

[0004] The battery pack includes nickel plates, a protection board, plug wires, and multiple battery cells connected in series and parallel. The multiple battery cells are connected in series and parallel through nickel plates. The nickel plates are connected to the protection board, the protection board is connected to the plug wires, and the battery pack is connected to an external circuit through the plug wires.

[0005] A fixed bracket, comprising a first support plate and a second support plate, one end of the first support plate being located between two adjacent cells arranged side by side along a first direction in the battery pack, and the other end of the first support plate being connected to a protection plate; one end of the second support plate being located between two adjacent cells arranged side by side along a second direction in the battery pack, and the other end of the second support plate being fixedly connected to the first support plate.

[0006] The housing includes an upper cover and a lower frame that are snap-fitted together and used to install the battery pack. Both the upper cover and the lower frame have multiple heat dissipation holes on their two side walls along a first direction.

[0007] Furthermore, a buffer pad is fixedly installed on the inner side of the bottom of the lower frame.

[0008] Furthermore, the lower frame is provided with first arc-shaped brackets on both inner walls along the third direction, which match the outer peripheral surface of the battery cell.

[0009] Furthermore, the upper cover is provided with a second arc-shaped bracket on both inner walls along the third direction, which matches the outer peripheral surface of the battery cell.

[0010] Furthermore, the fixed bracket also includes a third support plate orthogonally arranged to the first support plate, and the first support plate is connected to the protective plate through the third support plate.

[0011] Furthermore, the third support plate and the second support plate are spaced apart on the first support plate, and the ends of the third support plate and the second support plate away from the first support plate are both configured as arc-shaped structures that match the outer peripheral surface of the battery cell for covering and fixing the battery cell.

[0012] Furthermore, the third support plate is provided with a positioning post, and the protective plate is provided with a positioning hole that matches the positioning post for positioning.

[0013] Furthermore, the fixing bracket also includes a fourth support plate arranged along a third direction, the fourth support plate being orthogonally arranged on the first support plate, and the fourth support plate being located between two adjacent cells of the battery pack connected in series along the first direction.

[0014] Compared with existing technologies, the battery pack provided in this application offers a heat dissipation-friendly design. This battery pack utilizes a fixed bracket to physically isolate the series- and parallel-connected cells within the battery pack, creating gaps between adjacent cells and increasing their heat dissipation area, thus accelerating heat dissipation. Simultaneously, by opening heat dissipation holes on both sides of the upper cover and lower frame, the relatively positioned holes allow the battery pack installed within the casing to dissipate heat rapidly under air convection. Therefore, the battery pack provided in this application effectively enhances heat dissipation and can be used in operating environments with continuous high current. It solves the technical problem in existing technologies where poor heat dissipation during continuous high current operation leads to rapid performance degradation and short lifespan of the battery pack. Attached Figure Description

[0015] Figure 1 This is an exploded view of a battery pack with heat dissipation features according to some embodiments of this application.

[0016] Figure 2 This is a schematic diagram of the structure of the fixing bracket in some embodiments of this application.

[0017] Figure 3 This is a schematic diagram of the structure of the cover in some embodiments of this application.

[0018] Figure 4 This is a structural diagram of the lower frame in some embodiments of this application.

[0019] Figure 5 This is a schematic diagram of the overall structure of a battery pack that facilitates heat dissipation in some embodiments of this application.

[0020] In the diagram: 11. Nickel sheet, 12. Protection board, 13. Plug wire, 14. Battery cell, 21. First support board, 22. Second support board, 23. Third support board, 24. Fourth support board, 31. Top cover, 32. Bottom frame, 4. Heat dissipation hole, 5. Buffer pad, 6. First arc-shaped bracket, 7. Second arc-shaped bracket, 8. Positioning post, 9. Positioning hole. Detailed Implementation

[0021] To facilitate understanding of the structure and operation of this utility model, the following description, in conjunction with the accompanying drawings and optimized embodiments, provides a more comprehensive and detailed account of the utility model. However, the scope of protection of this utility model is not limited to the specific embodiments described below. It should be noted that, without affecting the effectiveness of use, the structural features and component dimensions, connection methods, and device sizes in the embodiments of this utility model can be changed.

[0022] Unless otherwise defined, all technical terms used below have the same meaning as commonly understood by those skilled in the art. The terms "first," "second," and similar terms used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely for the purpose of distinguishing corresponding components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "connection" or "connected" are not limited to direct connections, but can refer to indirect connections through other intermediate connecting parts. Terms such as "above," "below," "one side," "the other side," "vertical," and "horizontal" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0023] It should be noted that, such as Figure 1 As shown, in this embodiment, the first direction refers to the Z-axis direction, the second direction refers to the Y-axis direction, and the third direction refers to the X-axis direction.

[0024] Please see Figures 1-5 As shown, an embodiment of this application provides a battery pack that facilitates heat dissipation, comprising:

[0025] The battery pack includes a nickel plate 11, a protection board 12, a plug wire 13, and multiple battery cells 14 connected in series and parallel. The multiple battery cells 14 are connected in series and parallel through the nickel plate 11. The nickel plate 11 is connected to the protection board 12, and the protection board 12 is connected to the plug wire 13. The battery pack is then connected to an external circuit through the plug wire 13.

[0026] A fixed bracket is provided, comprising a first support plate 21 and a second support plate 22. One end of the first support plate 21 is located between two adjacent cells 14 arranged side by side along a first direction in the battery pack, and the other end of the first support plate 21 is connected to a protection plate 12. One end of the second support plate 22 is located between two adjacent cells 14 arranged side by side along a second direction in the battery pack, and the other end of the second support plate 22 is fixedly connected to the first support plate 21.

[0027] The housing includes an upper cover 31 and a lower frame 32 that are snap-fitted together and used to install the battery pack. The upper cover 31 and the lower frame 32 are provided with multiple heat dissipation holes 4 on their two side walls along the first direction.

[0028] In the above embodiments, the first support plate 21 physically isolates adjacent cells 14 arranged side-by-side in the first direction of the battery pack, and the second support plate 22 physically isolates adjacent cells 14 arranged side-by-side in the second direction of the battery pack. That is, in both the first and second directions, the battery pack utilizes the first support plate 21 and the second support plate 22 to leave gaps between adjacent cells 14, thus effectively increasing the heat dissipation area of ​​the cells 14 and facilitating heat dissipation of each cell 14 during operation. Simultaneously, by opening heat dissipation holes 4 on both sides of the upper cover 31 and the lower frame 32, the oppositely arranged heat dissipation holes 4 can further accelerate the heat dissipation of the battery pack installed in the casing through external air convection. Therefore, the battery pack provided in this application enhances the heat dissipation effect of the cells, and this battery pack can be applied to operating environments with continuous high current operation. In other words, the battery pack provided in this application solves the technical problem in the prior art where poor heat dissipation during continuous high current operation leads to rapid performance degradation and short service life of the battery pack.

[0029] It should be noted that in practical applications, an insulating sheet is attached to the outer surface of each nickel sheet 11 for insulation.

[0030] In some embodiments, a buffer pad 5 is fixedly installed on the inner bottom side of the lower frame 32.

[0031] In the above embodiment, the buffer pad 5 is fixedly attached to the bottom inner side of the lower frame 32, and the buffer pad 5 is located at three points along the first direction: the front, the middle, and the rear of the lower frame 32. Based on the buffer pad 5 provided on the bottom inner side of the lower frame 32, the battery pack installed in the housing can be effectively buffered to prevent damage to the battery pack in the event of collisions, drops, or other accidents.

[0032] In some embodiments, the lower frame 32 is provided with a first arc-shaped bracket 6 on both inner walls along the third direction, which matches the outer peripheral surface of the battery cell 14, and the upper cover 31 is provided with a second arc-shaped bracket 7 on both inner walls along the third direction, which matches the outer peripheral surface of the battery cell 14.

[0033] In the above embodiment, based on the first arc-shaped bracket 6 and the second arc-shaped bracket 7 arranged on the inner walls of the lower frame 32 and the upper cover 31 along the third direction, the first arc-shaped bracket 6 and the second arc-shaped bracket 7 are respectively matched with the outer peripheral surface of the battery cell 14 on the outside of the battery pack, thereby limiting the battery pack in the third direction and preventing the battery pack from shaking in the third direction.

[0034] In some embodiments, the fixing bracket further includes a third support plate 23 orthogonally arranged to the first support plate 21. The first support plate 21 is connected to the protective plate 12 through the third support plate 23. The third support plate 23 and the second support plate 22 are spaced apart on the first support plate 21, and the ends of the third support plate 23 and the second support plate 22 away from the first support plate 21 are both configured as arc-shaped structures that match the outer peripheral surface of the battery cell 14 for covering and fixing the battery cell 14.

[0035] In the above embodiments, by setting three plates 23 that match the second plate 22, the battery cell 14 can be covered and fixed, making the battery pack a stable overall structure.

[0036] In some embodiments, the third support plate 23 is provided with a positioning post 8, and the protective plate 12 is provided with a positioning hole 9 that matches and positions the positioning post 8.

[0037] In the above embodiments, the protective plate 12 is provided with at least two diagonal positioning holes 9, and the third support plate 23 is provided with positioning posts 8 that match the positioning holes 9 at opposite positions. In this embodiment, the protective plate 12 is provided with two positioning holes 9. In other embodiments, the number of positioning holes 9 on the protective plate 12 can be set to four, that is, one positioning hole 9 is provided at each of the four diagonal corners of the protective plate 12.

[0038] In the above embodiment, the positioning pin 8 and the positioning hole 9 are matched to quickly connect the protective plate 12 and the third support plate 23, thus achieving the function of positioning and preventing mistaken identification.

[0039] In some embodiments, the fixing bracket further includes a fourth support plate 24 disposed along a third direction, the fourth support plate 24 being orthogonally disposed on the first support plate 21, and the fourth support plate 24 being located between two adjacent cells 14 connected in series along the first direction of the battery pack.

[0040] In the above embodiments, by setting the fourth support plate 24, the structural strength of the fixed bracket can be strengthened on the one hand, and the two adjacent cells 14 connected in series in the first direction can be physically isolated by the fourth support plate 24. This can also increase the heat dissipation area of ​​the cell 2 and further improve the heat dissipation effect of the battery pack.

[0041] The present invention provides a detailed description of a heat-dissipating battery pack. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A battery pack that facilitates heat dissipation, characterized in that, include: The battery pack includes a nickel plate (11), a protection board (12), a plug wire (13), and multiple cells (14) connected in series and parallel. The multiple cells (14) are connected in series and parallel through the nickel plate (11). The nickel plate (11) is connected to the protection board (12), and the protection board (12) is connected to the plug wire (13). The battery pack is then connected to an external circuit through the plug wire (13). The fixed bracket includes a first support plate (21) and a second support plate (22). One end of the first support plate (21) is located between two adjacent cells (14) arranged side by side in the first direction in the battery pack, and the other end of the first support plate (21) is connected to the protection plate (12). One end of the second support plate (22) is located between two adjacent cells (14) arranged side by side in the second direction in the battery pack, and the other end of the second support plate (22) is fixedly connected to the first support plate (21). The housing includes an upper cover (31) and a lower frame (32) that are snapped together and used to install the battery pack. The upper cover (31) and the lower frame (32) are provided with multiple heat dissipation holes (4) on both sides of the upper cover (31) and the lower frame (32) along the first direction.

2. The battery pack with heat dissipation as described in claim 1, characterized in that, A buffer pad (5) is fixedly installed on the inner side of the bottom of the lower frame (32).

3. The battery pack with heat dissipation as described in claim 1, characterized in that, The lower frame (32) is provided with a first arc-shaped bracket (6) on both inner walls along the third direction, which matches the outer peripheral surface of the battery cell (14).

4. The battery pack with heat dissipation as described in claim 1, characterized in that, The upper cover (31) is provided with a second arc-shaped bracket (7) on both inner walls along the third direction, which matches the outer peripheral surface of the battery cell (14).

5. The battery pack with heat dissipation as described in claim 1, characterized in that, The fixed bracket also includes a third support plate (23) orthogonally arranged with the first support plate (21), and the first support plate (21) is connected to the protective plate (12) through the third support plate (23).

6. The heat-dissipating battery pack as described in claim 5, characterized in that, The third support plate (23) and the second support plate (22) are spaced apart on the first support plate (21), and the ends of the third support plate (23) and the second support plate (22) away from the first support plate (21) are both set as arc-shaped structures that match the outer peripheral surface of the battery cell (14) for covering and fixing the battery cell (14).

7. The heat-dissipating battery pack as described in claim 6, characterized in that, The third support plate (23) is provided with a positioning post (8), and the protective plate (12) is provided with a positioning hole (9) that matches the positioning post (8).

8. The battery pack with heat dissipation as described in claim 1, characterized in that, The fixed bracket also includes a fourth support plate (24) arranged along a third direction. The fourth support plate (24) is orthogonally arranged on the first support plate (21) and is located between two adjacent cells (14) connected in series along the first direction of the battery pack.

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