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CN-224217671-U - Battery monomer and battery package

CN224217671UCN 224217671 UCN224217671 UCN 224217671UCN-224217671-U

Abstract

The application provides a battery monomer and a battery pack, and relates to the technical field of batteries. The battery cell comprises a shell, a cover plate, a pole column, an electrode assembly and a connecting sheet. The electrode assembly is arranged in the accommodating cavity, the connecting sheet is arranged in the accommodating cavity and is positioned between the electrode post and the electrode body, the connecting sheet comprises a conductive part and an insulating part which are connected, the conductive part is fixedly connected with the electrode post, the insulating part is positioned at one side of the conductive part facing the electrode body, and one part of the electrode lug is positioned in a gap formed between the insulating part and the conductive part and is fixedly connected with the conductive part. According to the battery cell provided by the application, the restraint of one part of the tab through the insulating part of the connecting sheet is realized, so that the possibility of inserting the tab into the electrode body is reduced, and the safety of the battery cell is improved.

Inventors

  • SHEN KUN
  • YANG WEI

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250521

Claims (10)

  1. 1. A battery cell, comprising: A housing (110) having a receiving chamber (111); A cover plate (121) connected to the housing (110) to cover the accommodation chamber (111); A pole (122) penetrating through the cover plate (121); An electrode assembly (130) disposed in the accommodating chamber (111), the electrode assembly (130) including an electrode body (131) and a tab (132) connected to each other; Connection piece (140), set up in hold chamber (111), and be located utmost point post (122) with between electrode body (131), connection piece (140) are including conductive part (141) and insulating part (142) that are connected, conductive part (141) with utmost point post (122) fixed connection, insulating part (142) are located conductive part (141) orientation one side of electrode body (131), insulating part (142) with be formed with clearance (145) between conductive part (141), a part of utmost point ear (132) is located in clearance (145), and with conductive part (141) fixed connection.
  2. 2. The battery cell according to claim 1, wherein the battery cell has a second direction (Y), the connecting piece (140) further comprises an insulation switching portion (143), the insulation portion (142) is connected with the conductive portion (141) through the insulation switching portion (143), the insulation switching portion (143) is connected with an end portion of the conductive portion (141) along the second direction (Y), a first avoidance hole (14312) penetrating along the second direction (Y) is provided on the insulation switching portion (143), and a portion of the tab (132) penetrates through the first avoidance hole (14312) and is fixedly connected with the conductive portion (141).
  3. 3. The battery cell according to claim 2, wherein the battery cell has a third direction (Z) perpendicular to the second direction (Y), the insulating adapter part (143) includes a first adapter section (1433) and a second adapter section (1432) that are connected, the first adapter section (1433) is connected with the insulating part (142), and is provided with the first avoiding hole (14312), the second adapter section (1432) is connected with an end portion of the conductive part (141) along the second direction (Y), a second avoiding hole (14311) penetrating along the third direction (Z) is provided on the second adapter section (1432), and the second avoiding hole (14311) is communicated with the first avoiding hole (14312).
  4. 4. The battery cell according to claim 2, wherein the number of the electrode assemblies (130) is plural, the plural electrode assemblies (130) are arranged in the second direction (Y), the number of the insulating parts (142) is two, and two of the insulating parts (142) correspond to the tabs (132) of the plural electrode assemblies (130) arranged in the second direction (Y).
  5. 5. The battery cell of any one of claims 2 to 4, wherein the insulating portion (142), the insulating adapter portion (143), and the conductive portion (141) are integrally formed.
  6. 6. The battery cell of claim 1, wherein the battery cell has a first direction (X), the connecting piece (140) further comprises an insulating connecting portion (144), and the insulating portion (142) is connected to an end of the conductive portion (141) along the first direction (X) through the insulating connecting portion (144).
  7. 7. The battery cell according to claim 6, wherein one end of the conductive portion (141) along the first direction (X) is provided with the insulating portion (142), and a dimension of the insulating portion (142) along the first direction (X) is larger than a dimension of the tab (132) along the first direction (X).
  8. 8. The battery cell according to claim 7, wherein the conductive portion (141) is provided with the insulating portions (142) at both ends in the first direction (X), and a sum of dimensions of two of the insulating portions (142) in the first direction (X) is larger than a dimension of the tab (132) in the first direction (X).
  9. 9. The battery cell of any one of claims 6 to 8, wherein the insulating portion (142) and the insulating connecting portion (144) are both plastic pieces and are integrally formed.
  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 also increasing. In the process of manufacturing the battery cell, when the electrode assembly is combined, the tab is easily inserted into the electrode body to cause short circuit, so that the safety of the battery cell is affected. Disclosure of utility model Accordingly, the present application is directed to a battery cell and a battery pack, which are designed to solve the technical problem that the safety of the battery cell is affected by short circuit caused by easy insertion of the tab into the electrode body. 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 having a receiving cavity; A cover plate connected with the shell to cover the accommodating cavity; The pole is penetrated through the cover plate; The electrode assembly is arranged in the accommodating cavity and comprises an electrode body and a tab which are connected; The connecting piece set up in hold the intracavity, and be located the utmost point post with between the electrode body, the connecting piece is including conductive part and the insulating part that is connected, conductive part with utmost point post fixed connection, insulating part is located conductive part orientation one side of electrode body, insulating part with be formed with the clearance between the conductive part, a part of utmost point ear is located in the clearance, and with conductive part fixed connection. In one embodiment of the first aspect, the battery unit has a second direction, the connecting piece further includes an insulation switching portion, the insulation portion is connected with the conductive portion through the insulation switching portion, the insulation switching portion is connected with the conductive portion along an end portion of the second direction, a first avoiding hole penetrating along the second direction is formed in the insulation switching portion, and a part of the tab penetrates through the first avoiding hole and is fixedly connected with the conductive portion. In one embodiment of the first aspect, the battery unit has a third direction perpendicular to the second direction, the insulation switching portion includes a first switching section and a second switching section that are connected, the first switching section is connected with the insulation portion, and is provided with the first hole of dodging, the second switching section with the conductive portion is followed the end connection of the second direction, be provided with on the second switching section along the second hole of dodging that the third direction runs through, the second dodges the hole with the first hole of dodging intercommunication. In one embodiment of the first aspect, the number of the electrode assemblies is plural, the plural electrode assemblies are arranged along the second direction, the number of the insulating parts is two, and the two insulating parts correspond to the tabs of the plural electrode assemblies arranged along the second direction. In one embodiment of the first aspect, the insulating portion, the insulating adapter portion, and the conductive portion are integrally formed. In one embodiment of the first aspect, the battery cell has a first direction, and the connecting piece further includes an insulating connection portion, and the insulating portion is connected to an end portion of the conductive portion along the first direction through the insulating connection portion. In one embodiment of the first aspect, one end of the conductive portion along the first direction is provided with the insulating portion, and a dimension of the insulating portion along the first direction is greater than a dimension of the tab along the first direction. In one embodiment of the first aspect, the two ends of the conductive portion along the first direction are provided with the insulating portions, and a sum of dimensions of the two insulating portions along the first direction is greater than a dimension of the tab along the first direction. In one embodiment of the first aspect, the insulating portion and the insulating connecting member are both plastic members and are integrally formed. In a second aspect, embodiments of the present application provide a battery pack comprising a battery cell as described in