Battery cell insulation device and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cell insulation device and a battery. The battery core insulation device comprises a top plate, a first insulation part and a second insulation part, a first groove is formed in the position, corresponding to a pole, of a top cover plate, the first insulation part covers the top cover plate, an avoiding hole is formed in the position, corresponding to the pole, of the first insulation part, the second insulation part is arranged on the pole in a sleeving mode and penetrates through the avoiding hole, and an extension part is arranged in the circumferential direction of the second insulation part. The extension part is embedded in the first groove, the extension part is clamped between the first insulating piece and the top cover plate to form an overlapping structure, and the overlapping structure seals a reserved gap between the battery leading-out end and the top insulating sheet, so that the phenomenon that the battery cell is short-circuited due to the influence of high voltage and large current is avoided, the safety of the battery cell is remarkably improved, and the service life of the battery cell is prolonged. And the personal and property safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery core insulation device and a battery. Background Art

[0002] At present, the insulation structure of the positive and negative terminals of square batteries is mainly realized by assembling the upper plastic and the top insulating sheet. When the top insulating sheet and the upper plastic are assembled, due to the limitation of equipment accuracy, a certain gap is often reserved between the top insulating sheet and the positive and negative terminals of the battery to avoid interference in product assembly caused by equipment errors.

[0003] However, the battery may face high voltage and high current in the subsequent PACK. The reserved gap between the battery lead-out terminal and the top insulating sheet may be affected by the high voltage and high current, causing the battery cell to short-circuit, creating a safety hazard and threatening life and property safety.

[0004] Therefore, there is an urgent need for a battery cell insulation device and a battery to solve the problems in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a battery cell insulation device, which adds an overlapping structure of a first insulating member and a second insulating member, thereby closing the reserved gap between the battery lead-out terminal and the top insulating sheet, avoiding the phenomenon of short circuit of the battery cell due to high voltage and high current, significantly improving the safety of the battery cell, and ensuring personal and property safety.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The cell insulation device comprises:

[0008] A top cover plate, wherein the top cover plate is provided with a first groove corresponding to the position of the pole;

[0009] A first insulating member, which is covered on the top cover plate, and the first insulating member is provided with an avoidance hole corresponding to the position of the pole;

[0010] The second insulating member is sleeved on the pole and penetrates the avoidance hole. The second insulating member is provided with an extension portion in the circumferential direction. The extension portion is embedded in the first groove and clamped between the first insulating member and the top cover plate.

[0011] Optionally, a width W1 of the extension portion sandwiched between the first insulating member and the top cover plate is greater than or equal to 0.3 mm.

[0012] Optionally, the width W2 of the extension portion is greater than 1 mm, and the thickness T1 of the extension portion is greater than 0.3 mm.

[0013] Optionally, a second groove is provided on the second insulating member, a pole pressing plate is provided in the second groove, and the pole is fixedly connected to the pole pressing plate.

[0014] Optionally, a first penetration hole is provided on the top cover plate, a second penetration hole is provided on the second insulating member, a third penetration hole is provided on the top cover plate, and the pole is sequentially penetrated with the first penetration hole, the second penetration hole and the third penetration hole and is clamped on the pole pressure plate.

[0015] Optionally, a positioning portion extends downward from the hole wall of the second penetration hole, and the positioning portion is inserted into the first penetration hole.

[0016] Optionally, the distance between the hole wall of the avoidance hole and the outer wall of the second groove is greater than or equal to 0.5 mm.

[0017] Optionally, a reinforcement portion is provided at the connection between the extension portion and the outer wall of the second groove.

[0018] Optionally, the first insulating member is made of PP material, and the second insulating member is made of PPS material.

[0019] Another object of the utility model is to provide a battery, which adopts the above-mentioned battery cell insulation device to effectively block the reserved gap between the battery cell lead-out terminal and the first insulating plate, avoid battery cell short circuit, and effectively improve the safety of the battery.

[0020] To achieve this purpose, the utility model adopts the following technical solutions:

[0021] A battery comprises the above-mentioned battery cell insulation device.

[0022] Beneficial effects:

[0023] The utility model provides a battery cell insulation device, comprising a top plate, a first insulating member and a second insulating member, wherein the top cover plate is provided with a first groove at a position corresponding to a pole, the first insulating member is covered on the top cover plate, the first insulating member is provided with a avoidance hole at a position corresponding to the pole, the second insulating member is sleeved on the pole and penetrated through the avoidance hole, an extension portion is provided in a circumferential direction of the second insulating member, the extension portion is embedded in the first groove, the extension portion is clamped between the first insulating member and the top cover plate to form an overlapping structure, the overlapping structure closes a reserved gap between a battery lead-out terminal and a top insulating sheet, avoids a phenomenon in which the battery cell is short-circuited due to the influence of high voltage and large current, significantly improves the safety of the battery cell, and ensures personal and property safety.

[0024] The battery provided by the utility model comprises the above-mentioned battery cell insulation device. By adopting the above-mentioned battery cell insulation device, the battery effectively blocks the reserved gap between the battery cell lead-out terminal and the first insulating plate, avoids battery cell short circuit, and effectively improves the safety of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a partial cross-sectional view of the battery core insulation device provided by the utility model;

[0026] Figure 2 It is an exploded view of the battery core insulation device provided by the utility model;

[0027] Figure 3 It is a structural schematic diagram of the second insulating member provided by the utility model at a viewing angle;

[0028] Figure 4 It is a structural schematic diagram of the second insulating member provided by the utility model from another viewing angle.

[0029] In the figure:

[0030] 100, top cover plate; 110, first groove; 120, first through hole;

[0031] 200, first insulating member; 210, avoidance hole;

[0032] 300, second insulating member; 310, extension portion; 320, second groove; 330, second through hole; 340, positioning portion; 350, reinforcement portion;

[0033] 400, pole;

[0034] 500, pole pressure plate; 510, third penetration hole. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] This embodiment provides a battery cell insulation device, such as Figure 1-Figure 4 As shown, the battery cell insulation device includes a top cover plate 100, a first insulating member 200 and a second insulating member 300. The top cover plate 100 is provided with a first groove 110 at a position corresponding to the pole 400. The first insulating member 200 is covered on the top cover plate 100. The first insulating member 200 is provided with an avoidance hole 210 at a position corresponding to the pole 400. The second insulating member 300 is sleeved on the pole 400 and penetrates the avoidance hole 210. The second insulating member 300 is provided with an extension portion 310 in the circumferential direction. The extension portion 310 is embedded in the first groove 110. The extension portion 310 is clamped between the first insulating member 200 and the top cover plate 100 to form an overlapping structure. At this time, the bottom surface of the extension portion 310 is in contact with the bottom of the first groove 110, and the top surface of the extension portion 310 is flush with the upper surface of the top cover plate 100. The overlapping structure closes the reserved gap between the battery lead-out terminal and the top insulating sheet, preventing the battery cell from short-circuiting due to high voltage and high current, significantly improving the safety of the battery cell and ensuring personal and property safety.

[0040] Alternatively, if Figure 1 As shown, the width W1 of the extension portion 310 sandwiched between the first insulating member 200 and the top cover plate 100 is greater than or equal to 0.3 mm, and the specific width W1 of the overlapping structure can be 0.3 mm, 0.4 mm, 0.5 mm, etc. The appropriate overlapping width enhances the insulation and stability of the overlapping structure, helps the second insulating member 300 to resist external shock or vibration, and improves the durability of the battery cell under extreme working conditions.

[0041] Alternatively, if Figure 2-Figure 3 As shown, the width W2 of the extension part 310 is greater than 1 mm, and the thickness T1 of the extension part 310 is greater than 0.3 mm. By specifying the lower limit of the width and thickness of the extension part 310, the manufacturing difficulty in production can be reduced, and the consistency and quality of the extension part 310 can be improved. In addition, this design restriction ensures that the extension part 310 can still maintain structural integrity under high voltage and high current environments, reducing the risk of damage caused by vibration or external pressure.

[0042] Optionally, a second groove 320 is provided on the second insulating member 300, a pole pressing plate 500 is provided in the second groove 320, and the pole 400 is fixedly connected to the pole pressing plate 500 to ensure that the pole 400 will not loosen or shift during use of the battery cell, thereby improving the stability of the pole 400.

[0043] Optionally, a first penetration hole 120 is provided on the top cover plate 100, a second penetration hole 330 is provided on the second insulating member 300, and a third penetration hole 510 is provided on the pressure plate. The pole 400 is sequentially penetrated by the first penetration hole 120, the second penetration hole 330 and the third penetration hole 510 and is clamped on the pole pressure plate 500, ensuring that the pole 400 is subjected to uniform force and improving the assembly efficiency of the battery cell insulation device while ensuring the stability of the pole 400.

[0044] Alternatively, if Figure 3-Figure 4 As shown, a positioning portion 340 extends downward from the hole wall of the second through hole 330, and the positioning portion 340 is inserted into the first through hole 120. The design of the positioning portion 340 ensures the accuracy of the assembly position of the second insulating member 300, simplifies the assembly process, and improves assembly efficiency.

[0045] Optionally, the hole wall of the avoidance hole 210 is greater than or equal to 0.5 mm away from the outer wall of the second groove 320, thereby avoiding collision or friction between the second insulating member 300 and the side wall of the first insulating member 200, reducing mechanical damage to the battery cell insulation device during assembly, and improving the reliability of the battery cell insulation device.

[0046] Optionally, a reinforcement portion 350 is provided at the connection between the extension portion 310 and the outer wall of the second groove 320, which can increase the structural strength of the second insulating member 300, help improve the bending and extrusion resistance of the second insulating member 300, and increase its structural stability in complex working environments.

[0047] Optionally, the first insulating member 200 is made of PP (polypropylene), which has good insulation and corrosion resistance, can effectively prevent the conduction of current and extend the service life of the first insulating member 200. The second insulating member 300 is made of PPS (Polyphenylene sulfide), which has good electrical insulation performance, so applying it to the second insulating member 300 helps to improve the overall electrical insulation performance of the battery cell insulation device. The PPS material performs well in high temperature environments, so it can enhance the stability and performance of the battery cell insulation device under high temperature conditions and adapt to a wider range of working environments.

[0048] This embodiment also provides a battery, which includes the above-mentioned battery cell insulation device. By adopting the above-mentioned battery cell insulation device, the reserved gap between the battery cell lead-out terminal and the first insulating plate is effectively blocked, thereby avoiding battery cell short circuit and effectively improving the safety of the battery.

[0049] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A battery cell insulation device, characterized in that: include: A top cover plate (100), wherein the top cover plate (100) is provided with a first groove (110) at a position corresponding to the pole (400); A first insulating member (200) is covered on the top cover plate (100), and a avoidance hole (210) is provided on the first insulating member (200) at a position corresponding to the pole (400); A second insulating member (300) is sleeved on the pole (400) and penetrates the avoidance hole (210); an extension portion (310) is provided in the circumferential direction of the second insulating member (300); the extension portion (310) is embedded in the first groove (110); and the extension portion (310) is clamped between the first insulating member (200) and the top cover plate (100).

2. The battery cell insulation device according to claim 1, characterized in that: The extension portion (310) is sandwiched between the first insulating member (200) and the top cover plate (100) and has a width W1 greater than or equal to 0.3 mm.

3. The battery core insulation device according to claim 1, characterized in that: The width W2 of the extension portion (310) is greater than 1 mm, and the thickness T1 of the extension portion (310) is greater than 0.3 mm.

4. The battery cell insulation device according to claim 1, characterized in that: The second insulating member (300) is provided with a second groove (320), a pole pressing plate (500) is provided in the second groove (320), and the pole (400) is fixedly connected to the pole pressing plate (500).

5. The battery cell insulation device according to claim 4, characterized in that: A first penetration hole (120) is provided on the top cover plate (100), a second penetration hole (330) is provided on the second insulating member (300), a third penetration hole (510) is provided on the top cover plate (100), and the pole (400) is sequentially penetrated with the first penetration hole (120), the second penetration hole (330) and the third penetration hole (510) and is clamped on the pole pressure plate (500).

6. The battery cell insulation device according to claim 5, characterized in that: A positioning portion (340) extends downward from the hole wall of the second penetration hole (330), and the positioning portion (340) is inserted into the first penetration hole (120).

7. The battery cell insulation device according to claim 4, characterized in that: The distance between the hole wall of the avoidance hole (210) and the outer wall of the second groove (320) is greater than or equal to 0.5 mm.

8. The battery cell insulation device according to claim 4, characterized in that: A reinforcement portion (350) is provided at the connection between the extension portion (310) and the outer wall of the second groove (320).

9. The battery core insulation device according to claim 1, characterized in that: The first insulating component (200) is made of PP material, and the second insulating component (300) is made of PPS material.

10. A battery, characterized in that It comprises a battery core insulation device as described in any one of claims 1 to 9.

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