Lithium battery protection plate with explosion-proof characteristic

Abstract

The utility model relates to the technical field of lithium battery protection plates, in particular to a lithium battery protection plate with an explosion-proof characteristic, which comprises a protection plate main body and a radiating fin, the radiating fin is detachably connected with the protection plate main body through a connecting structure, a strip-shaped connecting hole is arranged on the protection plate main body in a penetrating manner, and the connecting structure comprises a rotating component and a sliding component. The rotating component is provided with a shaft part, a gear part, an upper clamping piece and a lower clamping piece, the gear part, the upper clamping piece and the lower clamping piece are fixed to the shaft part, the shaft part is rotationally connected with the cooling fins, the lower clamping piece is suitable for movably penetrating through the connecting hole, and the upper clamping piece and the lower clamping piece are perpendicular to each other and are arranged in the axial direction of the shaft part; the sliding member is elastically connected to the heat sink in a direction perpendicular to the shaft portion, and the sliding member has a straight tooth portion engaged with the gear portion. According to the utility model, the rotating component and the sliding component are matched for use, so that the radiating fins can be quickly mounted on and dismounted from the protection plate main body without the help of tools.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery protection board technology, specifically a lithium battery protection board with explosion-proof characteristics. Background Technology

[0002] A lithium battery explosion-proof protection board is a device used to improve the safety of lithium batteries. Its main function is to prevent lithium batteries from exploding under improper use conditions, such as overcharging, over-discharging, or short circuits. Existing lithium battery protection boards typically need to be used in conjunction with heat sinks to ensure that the heat generated during operation is effectively dissipated, avoiding safety hazards caused by overheating.

[0003] Currently, the main method of fixing the heat sink to the lithium battery protection board is screw connection. While screw connection provides good stability, it is relatively inconvenient to disassemble, requiring the use of appropriate tools (such as screwdrivers), which is not conducive to maintenance and replacement. To address the above problems, this utility model proposes a lithium battery protection board with explosion-proof characteristics. Utility Model Content

[0004] The purpose of this invention is to provide a lithium battery protection board with explosion-proof properties to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution:

[0006] A lithium battery protection board with explosion-proof properties includes a protection board body and a heat sink. The heat sink is detachably connected to the protection board body via a connecting structure. An elongated connecting hole is provided through the protection board body. The connecting structure includes:

[0007] A rotating component has a shaft portion and a gear portion, an upper clamp, and a lower clamp fixed on the shaft portion. The shaft portion is rotatably connected to the heat sink. The lower clamp is adapted to move through the connecting hole. The upper clamp is perpendicular to the lower clamp and arranged along the axial direction of the shaft portion.

[0008] And a sliding member, which is elastically connected to the heat sink in a direction perpendicular to the shaft portion, the sliding member having a straight tooth portion that meshes with the gear portion.

[0009] Optionally, a plug rod is fixedly provided on the sliding member, and a plug plate is fixedly provided on the heat sink to slide and engage with the plug rod. A spring is sleeved on the outside of the plug rod located between the sliding member and the plug plate.

[0010] Optionally, the edge of the heat sink is provided with an operating notch corresponding to the position of the sliding member.

[0011] Optionally, a limiting member is fixedly provided at the bottom of the heat sink to restrict the movement range of the sliding member.

[0012] Optionally, both the upper and lower clips are externally connected to rotatable contact wheels, and the upper and lower clips contact the surface of the protective plate body through the contact wheels.

[0013] Optionally, the length of the upper clip is greater than the length of the connecting hole.

[0014] Optionally, an upper clamping member and a lower clamping member are respectively provided on the upper and lower surfaces of the protective plate body located at the connection hole. The upper clamping member includes a pair of upper inclined platforms fixedly disposed on both sides of the length direction of the connection hole, and the lower clamping member includes a pair of lower inclined platforms fixedly disposed on both sides of the width direction of the connection hole.

[0015] Optionally, four rotating components are provided, and the four rotating components are respectively arranged at the four corners of the heat sink. The main body of the protective plate is provided with four connecting holes corresponding to the positions of the four rotating components.

[0016] Optionally, a cooling fan is mounted on the heat sink, and the cooling fan is connected to the heat sink by connecting screws.

[0017] Optionally, the heat sink is made of aluminum or copper.

[0018] Compared with the prior art, this utility model provides a lithium battery protection board with explosion-proof characteristics, which has the following beneficial effects:

[0019] 1. When installing the heat sink of the lithium battery protection board of this utility model, apply force with your fingers to the sliding component to adjust the angle of the rotating component, ensuring that the lower clip is aligned with the direction of the connecting hole before passing it through the connecting hole. The upper clip restricts the insertion depth of the shaft. Release the sliding component to return it to its original position, the rotating component resets, the lower clip is perpendicular to the connecting hole, and the heat sink is fixed. For disassembly, push the sliding component to make the lower clip parallel to the connecting hole, and the heat sink can be easily removed. Installation and disassembly require no special tools and are simple to operate.

[0020] 2. The heat sink of this utility model has a limiting member at its bottom to restrict the movement range of the sliding member. Thus, when the sliding member contacts the limiting member, the lower locking member is parallel to the connecting hole, ensuring that the lower locking member has a fixed rotation angle and avoiding improper angle adjustment.

[0021] 3. This utility model features upper and lower clamping components on the upper and lower surfaces of the protective plate body. Each upper and lower clamping component includes a pair of upper and lower inclined platforms fixed on both sides of the connection hole. When installing the heat sink, the contact wheels of the upper and lower clamping components slide along the inclined platforms until they are tightly engaged, reducing gaps and enhancing connection stability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0024] Figure 3 For the present utility model Figure 2 A magnified structural diagram at point A;

[0025] Figure 4 This is a schematic diagram of the bottom structure of this utility model;

[0026] Figure 5 For the present utility model Figure 4 A magnified structural diagram at point B;

[0027] Figure 6 This is a schematic diagram of the heat sink and connection structure of this utility model;

[0028] Figure 7 This is a schematic diagram of the rotating component of this utility model;

[0029] Figure 8 This is a schematic diagram of the sliding component of this utility model.

[0030] In the diagram: 10. Protective plate body; 11. Connecting hole; 12. Upper clamping part; 13. Lower clamping part; 20. Heat sink; 21. Operating notch; 22. Limiting part; 23. Insert plate; 30. Connecting structure; 31. Rotating component; 310. Shaft; 311. Gear; 312. Upper clamping part; 313. Lower clamping part; 314. Contact wheel; 32. Sliding component; 320. Straight tooth part; 321. Insert rod; 322. Spring; 40. Cooling fan; 41. Connecting screw. Detailed Implementation

[0031] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example: Please refer to Figures 1 to 8According to an embodiment of this utility model, a lithium battery protection board with explosion-proof characteristics is provided. Explosion-proof characteristics are inherent in all lithium battery protection boards, preventing explosions of the lithium battery under conditions of overcharging, over-discharging, or short circuits. The lithium battery protection board mainly includes a protection board body 10 and a heat sink 20. The heat sink 20 is detachably connected to the protection board body 10 via a connecting structure 30. A long, narrow connecting hole 11 is provided through the protection board body 10. The connecting structure 30 includes a rotating component 31 and a sliding component. The rotating component 31 has a shaft portion 310 and a gear portion 311, an upper clamp 312 and a lower clamp 313 fixed on the shaft portion 310. The shaft portion 310 is rotatably connected to the heat sink 20. The lower clamp 313 is adapted to move through the connecting hole 11. The upper clamp 312 is perpendicular to the lower clamp 313 and arranged along the axial direction of the shaft portion 310. The sliding component 32 is elastically connected to the heat sink 20 in a direction perpendicular to the shaft portion 310. The sliding component 32 has a straight tooth portion 320 that meshes with the gear portion 311.

[0033] When installing the heat sink 20 in the explosion-proof lithium battery protection board with the above-described structure, first apply pressure to the sliding member 32 with your fingers and adjust the rotating member 31 to an appropriate angle to ensure that the lower clip 313 is aligned with the connection hole 11 of the protection board body 10. Then, pass the lower clip 313 through the connection hole 11. The upper clip 312 limits the maximum depth to which the shaft 310 is inserted into the connection hole 11. After completing these steps, release the sliding member 32, allowing it to automatically return to its original position under elastic force. The rotating member 31 then resets, and the lower clip 313 is thus perpendicular to the connection hole 11. In this way, the heat sink 20 can be quickly and securely fixed to the protection board body 10. If the heat sink 20 needs to be removed for maintenance, simply push the sliding member 32 again with your fingers to make the lower clip 313 parallel to the connection hole 11, and the heat sink 20 can be easily removed from the protection board body 10. The installation and removal process requires no special tools and is simple to operate.

[0034] In order to achieve an elastic connection between the sliding member 32 and the heat sink 20 in a direction perpendicular to the shaft portion 310, in this exemplary embodiment, a plug rod 321 is fixedly provided on the sliding member 32, a plug plate 23 is fixedly provided on the heat sink 20 to slide and engage with the plug rod 321, and a spring 322 is sleeved on the outside of the plug rod 321 located between the sliding member 32 and the plug plate 23.

[0035] In this exemplary embodiment, an operating notch 21 is provided on the edge of the heat sink 20 corresponding to the position of the sliding member 32. Specifically, the operating notch 21 can be set in a reasonable position, where the user can apply force evenly to the sliding member 32, while in other positions it is not easy to touch the sliding member 32, thus ensuring that the sliding member 32 can be pushed smoothly.

[0036] In this exemplary embodiment, a limiting member 22 for restricting the movement range of the sliding member 32 is fixedly provided at the bottom of the heat sink 20. With this configuration, when the user pushes the sliding member 32 to fit against the limiting member 22, the lower locking member 313 is exactly parallel to the connecting hole 11. This allows the lower locking member 313 to have a fixed rotation angle, without the problem of excessive or insufficient rotation angle.

[0037] In this exemplary embodiment, both the upper clamping member 312 and the lower clamping member 313 are externally connected to rotatable contact wheels 314, and the upper clamping member 312 and the lower clamping member 313 contact the surface of the protective plate body 10 through the contact wheels 314. The contact wheels 314 ensure that there is rolling contact between the upper clamping member 312 and the protective plate body 10, and between the lower clamping member 313 and the protective plate body 10, effectively reducing wear during relative movement compared to sliding contact.

[0038] To improve the stability of the connection between the heat sink 20 and the protective plate body 10, in this exemplary embodiment, the length of the upper clamping member 312 is greater than the length of the connecting hole 11. This arrangement allows the upper clamping member 312 and the lower clamping member 313 to be simultaneously clamped on both sides of the protective plate body 10, improving the stability of the heat sink 20 during installation.

[0039] To further improve the stability of the connection between the heat sink 20 and the protective plate body 10, in this exemplary embodiment, an upper clamping member 12 and a lower clamping member 13 are respectively provided on the upper and lower surfaces of the protective plate body 10 located at the connection hole 11. The upper clamping member 12 includes a pair of upper inclined platforms fixedly disposed on both sides of the connection hole 11 in the length direction, and the lower clamping member 13 includes a pair of lower inclined platforms fixedly disposed on both sides of the connection hole 11 in the width direction. With this configuration, during the installation of the heat sink 20, the contact wheels 314 at both ends of the upper clamping member 312 will slide upward along the inclined surface of the upper inclined platform, while the contact wheels 314 at both ends of the lower clamping member 313 will slide upward along the inclined surface of the lower inclined platform until the upper clamping member 312 and the lower clamping member 313 are tightly engaged on both sides of the protective plate body 10. This reduces the gap between the upper clamping member 312 and the lower clamping member 313 and the protective plate body 10, thereby enhancing the stability of the connection between the heat sink 20 and the protective plate body 10.

[0040] In this exemplary embodiment, four rotating members 31 are provided, and the four rotating members 31 are respectively arranged at the four corners of the heat sink 20. The protective plate body 10 is provided with four connecting holes 11 corresponding to the positions of the four rotating members 31. The heat sink 20 can be more firmly fixed to the protective plate body 10 by means of the four rotating members 31.

[0041] To improve heat dissipation for the protective plate body 10, in this exemplary embodiment, a cooling fan 40 is mounted on the heat sink 20, and the cooling fan 40 is connected to the heat sink 20 via connecting screws 41. Preferably, the heat sink 20 is made of aluminum or copper.

[0042] Working Principle: During the installation of the heat sink 20, first apply pressure to the sliding member 32 with your fingers to compress the spring 322, and adjust the rotating member 31 to an appropriate angle to ensure that the lower clamp 313 is aligned with the connecting hole 11 of the protective plate body 10. Next, pass the lower clamp 313 through the connecting hole 11. The upper clamp 312 limits the maximum depth to which the shaft 310 is inserted into the connecting hole 11. After completing these steps, release the sliding member 32, which automatically returns to its original position under the elastic force of the spring 322. The rotating member 31 then resets, and the contact wheels 314 at both ends of the upper clamp 312 slide upwards along the slope of the upper ramp, while the contact wheels 314 at both ends of the lower clamp 313 slide upwards along the slope of the lower ramp until the upper clamp 312 and the lower clamp 313 are tightly engaged on both sides of the protective plate body 10. In this way, the heat sink 20 can be quickly and securely fixed to the protective plate body 10. If the heat sink 20 needs to be removed for maintenance, simply push the sliding member 32 with your finger again to align the lower clip 313 with the connection hole 11, and the heat sink 20 can be easily removed from the protective plate body 10. The entire installation and disassembly process does not require any special tools and is easy to operate.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery protection plate having an explosion-proof property, comprising a protection plate main body (10) and a heat sink (20), the heat sink (20) being detachably connected with the protection plate main body (10) through a connecting structure (30), characterized in that, The protective plate body (10) is provided with a through-hole (11) in the shape of an elongated strip, and the connection structure (30) includes: The rotating component (31) has a shaft (310) and a gear (311), an upper clamp (312) and a lower clamp (313) fixed on the shaft (310). The shaft (310) is rotatably connected to the heat sink (20). The lower clamp (313) is adapted to move through the connecting hole (11). The upper clamp (312) is perpendicular to the lower clamp (313) and arranged along the axial direction of the shaft (310). And a sliding member (32) is elastically connected to the heat sink (20) in a direction perpendicular to the shaft (310), the sliding member (32) having a straight tooth (320) that meshes with the gear (311).

2. The lithium battery protection plate with explosion-proof property according to claim 1, characterized in that: A plug rod (321) is fixedly provided on the sliding member (32), and a plug plate (23) is fixed on the heat sink (20) to slide and engage with the plug rod (321). A spring (322) is sleeved on the outside of the plug rod (321) located between the sliding member (32) and the plug plate (23).

3. The lithium battery protection plate with explosion-proof property according to claim 1, characterized in that: The edge of the heat sink (20) is provided with an operating notch (21) corresponding to the position of the sliding member (32).

4. The lithium battery protection plate with explosion-proof property according to claim 1, characterized in that: The bottom of the heat sink (20) is fixedly provided with a limiting member (22) for limiting the movement range of the sliding member (32).

5. The lithium battery protection plate with explosion-proof property according to any one of claims 1 to 4, characterized in that: The upper clamp (312) and the lower clamp (313) are both connected to rotatable contact wheels (314), and the upper clamp (312) and the lower clamp (313) contact the surface of the protective plate body (10) through the contact wheels (314).

6. The lithium battery protection plate with explosion-proof property according to claim 5, characterized in that: The length of the upper clip (312) is greater than the length of the connecting hole (11).

7. The lithium battery protection plate with explosion-proof property according to claim 6, characterized in that: An upper clamping member (12) and a lower clamping member (13) are respectively provided on the upper and lower surfaces of the protective plate body (10) located at the connection hole (11). The upper clamping member (12) includes a pair of upper inclined platforms fixedly disposed on both sides of the length direction of the connection hole (11), and the lower clamping member (13) includes a pair of lower inclined platforms fixedly disposed on both sides of the width direction of the connection hole (11).

8. The lithium battery protection plate with explosion-proof property according to claim 1, characterized in that: The rotating component (31) is provided in four parts, and the four rotating components (31) are respectively arranged at the four corners of the heat sink (20). The protective plate body (10) is provided with four connecting holes (11) corresponding to the positions of the four rotating components (31).

9. The lithium battery protection plate with explosion-proof property according to claim 1, characterized in that: A cooling fan (40) is installed on the heat sink (20), and the cooling fan (40) is connected to the heat sink (20) by a connecting screw (41).

10. The lithium battery protection plate with explosion-proof property according to claim 1, characterized in that: The heat sink (20) is made of aluminum or copper.

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