Search

CN-224217681-U - Battery monomer and battery package

CN224217681UCN 224217681 UCN224217681 UCN 224217681UCN-224217681-U

Abstract

The application provides a battery monomer and a battery pack, and relates to the technical field of batteries. The battery cell includes a case, an electrode assembly, a cap plate, an insulating member, and an insulating holder. The electrode assembly is arranged in the shell and comprises an electrode body and a tab which are connected, the cover plate is connected with the shell, a pole post and an explosion-proof valve are arranged on the cover plate, the insulating piece is arranged in the shell and connected with one side of the cover plate, which faces the electrode assembly, the insulating support is arranged in the shell and connected with one side of the insulating piece, which is close to the electrode assembly, the insulating support comprises a first supporting piece and a third supporting piece which are connected, the first supporting piece is abutted with the electrode body and provided with a first through exhaust port, the first exhaust port is opposite to the explosion-proof valve, and part of the tab is positioned between the third supporting piece and the insulating piece and is electrically connected with the pole post. The battery cell provided by the application can ensure the smoothness of the exhaust of the battery cell.

Inventors

  • HU MINGJIANG
  • QIN JISHENG
  • YANG WEI
  • Hou Zhanrui

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250424

Claims (10)

  1. 1. A battery cell, comprising: A housing (100); An electrode assembly (200) disposed within the housing (100), the electrode assembly (200) comprising an electrode body (210) and a tab (220) connected; The cover plate (310) is connected with the shell (100), and a pole column (350) and an explosion-proof valve (360) are arranged on the cover plate (310); An insulating member (320) provided in the case (100) and connected to a side of the cap plate (310) facing the electrode assembly (200); The insulating support (330) is arranged in the shell (100), and is connected with one side, close to the electrode assembly (200), of the insulating piece (320), the insulating support (330) comprises a first supporting piece (331) and a third supporting piece (333) which are connected, the first supporting piece (331) is abutted to the electrode body (210) and provided with a first penetrating exhaust port (334), the first exhaust port (334) is oppositely arranged with the explosion-proof valve (360), and a part of the lug (220) is located between the third supporting piece (333) and the insulating piece (320) and is electrically connected with the pole (350).
  2. 2. The battery cell of claim 1, wherein the third support (333) includes a first connection portion (3331) and a rod-shaped support portion (3333) connected, the first connection portion (3331) is located at one end of the rod-shaped support portion (3333) and connected to the first support (331), and the tab (220) is located partially between the rod-shaped support portion (3333) and the insulator (320).
  3. 3. The battery cell according to claim 2, wherein the battery cell has a first direction (Z), the insulating member (320) includes a first plastic portion (321) and an insulating main body (323), the insulating main body (323) is connected to a side of the cover plate (310) facing the electrode body (210), the first plastic portion (321) is connected to a side of the insulating main body (323) facing the electrode body (210), the first plastic portion (321) is abutted to the electrode body (210), a first limit groove (324) is provided on the first plastic portion (321), the first limit groove (324) penetrates through the first plastic portion (321) along the first direction (Z), and the first support member (331) is at least partially disposed in the first limit groove (324).
  4. 4. The battery cell according to claim 3, wherein a first avoidance groove (326) is formed in a side, close to the electrode assembly (200), of the first plastic portion (321), the first avoidance groove (326) is communicated with the first limit groove (324), and the first connection portion (3331) is disposed in the first avoidance groove (326).
  5. 5. A battery cell according to claim 3, wherein the insulating support (330) further comprises a second support member (332), the second support member (332) is connected with one end of the rod-shaped support portion (3333) away from the first connection portion (3331), the second support member (332) is abutted to the electrode body (210), the insulating member (320) further comprises a second plastic portion (322) connected to one side of the insulating body (323) facing the electrode body (210), a second limit groove (325) is formed in the second plastic portion (322), the second limit groove (325) penetrates through the second plastic portion (322) along the first direction (Z), and the second support member (332) is at least partially arranged in the second limit groove (325).
  6. 6. The battery cell of claim 5, wherein the second support (332) is provided with a second exhaust port (336), the second exhaust port (336) extending through the second support (332) in the first direction (Z).
  7. 7. The battery cell of claim 6, wherein the third support (333) further comprises a second connection portion (3332), the second connection portion (3332) is located at one end of the rod-shaped support portion (3333) away from the first connection portion (3331), the second support (332) is connected with the second connection portion (3332), a second avoidance groove (327) communicated with the second limit groove (325) is formed in the second plastic portion (322), and the second connection portion (3332) is disposed in the second avoidance groove (327).
  8. 8. The battery cell of claim 7, further comprising a second direction (X) and a third direction (Y) intersecting the first direction (Z) in pairs, wherein the first exhaust port (334) comprises a plurality of first exhaust ports (3341) arranged along the second direction (X) and the third direction (Y), wherein the first exhaust ports (3341) are arranged along the first direction (Z) through the first support (331) and are in communication with the first limit groove (324), and wherein the second exhaust port (336) comprises a plurality of second exhaust ports (3361) arranged along the third direction (Y), wherein the second exhaust ports (3361) are arranged along the first direction (Z) through the second support (332) and are in communication with the second limit groove (325).
  9. 9. The battery cell of claim 2, further comprising a protective layer (340), wherein the protective layer (340) is wrapped around the rod-shaped support portion (3333) to isolate the rod-shaped support portion (3333) from the tab (220).
  10. 10. A battery pack comprising the battery cell according to any one of claims 1 to 9.

Description

Battery monomer and battery package Technical Field The application relates to the technical field of batteries, in particular to a battery monomer and a battery pack. Background The information disclosed in this background section is only for enhancement of understanding of the general background of the disclosure and is not to be taken as an admission or any form of suggestion that this information forms the prior art that is well known to a person skilled in the art. With the development of battery technology, the safety requirements for battery cells are increasing. In the existing battery cell, the electrode lug is easy to insert into the electrode body to cause short circuit, and the insulating piece is added to support the electrode lug for the safety of the battery cell, but when the battery cell is in thermal runaway, the problem of unsmooth exhaust exists. Disclosure of utility model Accordingly, the present application is directed to a battery cell and a battery pack, which aims to solve the technical problem of unsmooth exhaust when the battery cell is out of control. In order to achieve the above purpose, the technical scheme adopted by the application is as follows: in a first aspect, embodiments of the present application provide a battery cell, comprising: A housing; the electrode assembly is arranged in the shell and comprises an electrode body and a tab which are connected; the cover plate is connected with the shell and is provided with a pole and an explosion-proof valve; An insulating member disposed in the case and connected to a side of the cap plate facing the electrode assembly; The insulating support is arranged in the shell and is connected with one side, close to the electrode assembly, of the insulating part, the insulating support comprises a first supporting part and a third supporting part, the first supporting part is connected with the electrode body in a butt mode and is provided with a first exhaust port which penetrates through the electrode body, the first exhaust port is opposite to the explosion-proof valve, and the part of the electrode lug is located between the third supporting part and the insulating part and is electrically connected with the electrode post. In one embodiment of the first aspect, the third support member includes a first connection portion and a rod-shaped support portion that are connected, the first connection portion is located at one end of the rod-shaped support portion and connected to the first support member, and the tab portion is located between the rod-shaped support portion and the insulating member. In one embodiment of the first aspect, the battery unit has a first direction, the insulating member includes a first plastic portion and an insulating main body, the insulating main body is connected to one side of the cover plate facing the electrode body, the first plastic portion is connected to one side of the insulating main body facing the electrode body, the first plastic portion is abutted to the electrode body, a first limiting groove is formed in the first plastic portion, the first limiting groove penetrates through the first plastic portion along the first direction, and the first supporting member is at least partially arranged in the first limiting groove. In one embodiment of the first aspect, a first avoidance groove is formed in a side, close to the electrode assembly, of the first plastic portion, the first avoidance groove is communicated with the first limiting groove, and the first connecting portion is arranged in the first avoidance groove. In one embodiment of the first aspect, the insulating support further includes a second support member, the second support member is connected with one end of the rod-shaped support portion away from the first connection portion, the second support member is in butt joint with the electrode body, the insulating member further includes a second plastic portion connected to one side of the insulating body, which faces the electrode body, a second limiting groove is formed in the second plastic portion, the second limiting groove penetrates through the second plastic portion along the first direction, and the second support member is at least partially disposed in the second limiting groove. In one embodiment of the first aspect, a second exhaust port is provided on the second support, and the second exhaust port penetrates the second support along the first direction. In one embodiment of the first aspect, the third supporting member further includes a second connecting portion, the second connecting portion is located at an end of the rod-shaped supporting portion away from the first connecting portion, the second supporting member is connected with the second connecting portion, a second avoidance groove communicated with the second limiting groove is formed in the second plastic portion, and the second connecting portion is disposed in the second avoidance groove. In one embodi