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CN-224204206-U - Battery top cover, single battery and electric equipment

CN224204206UCN 224204206 UCN224204206 UCN 224204206UCN-224204206-U

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery top cover, a single battery and electric equipment. The battery top cover comprises a top cover body, a battery pole column, a lower insulating piece and an insulating piece, wherein a pole column mounting hole is formed in the top cover body, the battery pole column comprises a mounting part and a connecting part which are integrally formed from top to bottom, the mounting part is inserted into the pole column mounting hole, a lower sealing piece is clamped between the connecting part and the bottom wall of the top cover body, the lower insulating piece is abutted to the bottom wall of the top cover body, at least part of the lower insulating piece is clamped between the connecting part and the bottom wall of the top cover body, the lower sealing piece is mounted in a clamping hole of the lower insulating piece, and the insulating piece is clamped between the connecting part and the lower sealing piece and correspondingly covers the connecting part of the lower sealing piece and the lower insulating piece. The battery top cover can improve the high temperature resistance of the battery top cover with low cost, and the insulating property of the battery top cover is improved, so that the use safety and reliability of the battery top cover are improved.

Inventors

  • LI JIANJU
  • LI CHANGXIE

Assignees

  • 深圳市科达利实业股份有限公司

Dates

Publication Date
20260505
Application Date
20250331

Claims (10)

  1. 1. Battery top cap, its characterized in that includes: The top cover comprises a top cover body (100), wherein a pole mounting hole (110) is formed in the top cover body (100); The battery pole (200), the battery pole (200) comprises an installation part (210) and a connecting part (220) which are integrally formed from top to bottom, the installation part (210) is inserted into the pole installation hole (110), and a lower sealing element (240) is clamped between the connecting part (220) and the bottom wall of the top cover body (100); The lower insulating piece (300) is abutted against the bottom wall of the top cover body (100), at least part of the lower insulating piece (300) is clamped between the connecting part (220) and the bottom wall of the top cover body (100), and the lower sealing piece (240) is arranged in the clamping hole (310) of the lower insulating piece (300); The insulating piece (400), insulating piece (400) presss from both sides locate diapire of top cap body (100) with lower sealing member (240) between, and corresponds cover lower sealing member (240) with the junction of lower insulating member (300).
  2. 2. The battery top cover according to claim 1, wherein a receiving groove (120) is provided at a junction of the top wall of the lower sealing member (240) and the top wall of the lower insulating member (300), and/or a receiving groove (120) is provided at a bottom wall of the top cover body (100), and the receiving groove (120) is filled with the insulating sheet (400).
  3. 3. The battery top cover according to claim 2, wherein the insulating sheet (400) includes an adsorption frame and aerogel, the bottom wall of the top cover body (100) is provided with the accommodating groove (120), the adsorption frame is provided in the accommodating groove (120), and the aerogel fills a gap between the accommodating groove (120) and the adsorption frame.
  4. 4. The battery top cover of claim 3, wherein the adsorption frame comprises any one of a fibrous sliver, a porous ceramic profile, a foam plastic, and a porous glass.
  5. 5. The battery top cover according to claim 4, wherein the high temperature resistance of the insulating sheet (400) is not less than the high temperature resistance of the lower seal member (240), and the heat insulating performance of the insulating sheet (400) is not less than the heat insulating performance of the lower seal member (240).
  6. 6. A battery top cover according to claim 3, characterized in that the bottom wall of the insulating sheet (400) is in interference connection with the junction of the top wall of the lower seal (240) and the top wall of the lower insulator (300).
  7. 7. The battery top cover according to claim 1, wherein the top of the mounting portion (210) further includes a press-connection portion (230), and an upper insulating member (600) is interposed between the press-connection portion (230) and the top wall of the top cover body (100).
  8. 8. The battery top cover of claim 7, wherein the upper insulator (600) further comprises an insulator (610) sandwiched between the mounting portion (210) and the post mounting hole (110).
  9. 9. A single cell comprising the cell top cover according to any one of claims 1 to 8.
  10. 10. A powered device comprising the battery cell of claim 9.

Description

Battery top cover, single battery and electric equipment Technical Field The utility model relates to the technical field of batteries, in particular to a battery top cover, a single battery and electric equipment. Background The battery shell is an essential component of the cylindrical battery and is used for accommodating a core pack assembly and a pole column assembly of the battery, the pole column assembly is used for being connected with an electronic element, a sensor or a connector to realize the external discharging function of the cylindrical battery, and meanwhile, the pole column assembly and the battery shell are in insulating connection through a lower plastic part, so that unsafe phenomena such as short circuit and the like of the cylindrical battery are avoided. Because the cylindrical battery is developing towards the directions of high energy density and high charge and discharge power, the short-time current intensity of the pole assembly is high, and the use frequency is high, so that the heating value of the pole assembly is higher, and the battery cover plate, the pole assembly and the lower plastic part have certain high-temperature resistance and ageing resistance while ensuring good insulativity between the pole assembly and the battery shell. The existing lower plastic part can only ensure stable insulating performance below 300 ℃, the insulating performance of the lower plastic part can be greatly reduced when the temperature is higher than 300 ℃, even the lower plastic part can be melted when the temperature is higher than a certain temperature, poor insulation and even short circuit occur, meanwhile, gaps exist between the lower plastic part and the insulating part of the pole assembly, high-voltage overcurrent can be generated in the gaps when high-power charge and discharge are carried out, and the potential risk of short circuit exists in the cylindrical battery. Therefore, it is needed to provide a novel battery top cover, a single battery and electric equipment, so as to solve the above technical problems in the prior art. Disclosure of utility model The utility model aims to provide a battery top cover, which can improve the high temperature resistance of the battery top cover with low cost, improve the insulating property of the battery top cover and improve the use safety and reliability of the battery top cover. To achieve the purpose, the utility model adopts the following technical scheme: The battery top cover comprises a top cover body, a battery pole column, a lower insulating piece and an insulating piece, wherein a pole column mounting hole is formed in the top cover body, the battery pole column comprises a mounting part and a connecting part which are integrally formed from top to bottom, the mounting part is inserted into the pole column mounting hole, a lower sealing piece is clamped between the connecting part and the bottom wall of the top cover body, the lower insulating piece is abutted to the bottom wall of the top cover body, at least part of the lower insulating piece is clamped between the connecting part and the bottom wall of the top cover body, the lower sealing piece is mounted in the clamping hole of the lower insulating piece, and the insulating piece is clamped between the bottom wall of the top cover body and the lower sealing piece and correspondingly covers the connecting part of the lower sealing piece and the lower insulating piece. Optionally, a receiving groove is formed at a connection part between the top wall of the lower sealing member and the top wall of the lower insulating member, and/or a receiving groove is formed in the bottom wall of the top cover body, and the insulating sheet is filled in the receiving groove. Optionally, the insulating sheet includes an adsorption frame and aerogel, the bottom wall of the top cover body is provided with the accommodating groove, the accommodating groove is internally provided with the adsorption frame, and the aerogel is filled in a gap between the accommodating groove and the adsorption frame. Optionally, the adsorption frame includes any one of a fibrous sliver, a porous ceramic section, a foam plastic and porous glass. Optionally, the high temperature resistance of the insulating sheet is not less than the high temperature resistance of the lower sealing member, and the heat insulation performance of the insulating sheet is not less than the heat insulation performance of the lower sealing member. Optionally, the bottom wall of the insulating sheet is in interference connection with the connection part of the top wall of the lower sealing piece and the top wall of the lower insulating piece Optionally, the top of the mounting portion further includes a pressing portion, and an upper insulating member is sandwiched between the pressing portion and a top wall of the top cover body. Optionally, the upper insulating member further includes an insulating portion interposed between the mounti