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CN-224217567-U - Battery monomer and battery package

CN224217567UCN 224217567 UCN224217567 UCN 224217567UCN-224217567-U

Abstract

The application provides a battery monomer and a battery pack, and relates to the technical field of batteries. The battery cell has a first direction and includes a housing, a post, an electrode assembly, an explosion-proof valve, and a protector. The explosion-proof device comprises a shell, an electrode assembly, an explosion-proof valve, a protection piece and an explosion-proof valve, wherein the shell is provided with a through hole penetrating along a first direction, the electrode post penetrates through the shell, the electrode assembly is arranged in the shell and is electrically connected with the electrode post, the explosion-proof valve is connected with the shell to cover the through hole, the protection piece is connected with one side of the shell, which is far away from the electrode assembly, along the first direction, the protection piece and the explosion-proof valve are arranged at intervals along the first direction, an air vent penetrating along the first direction is formed in the protection piece, and a part of the protection piece protrudes along the first direction in a direction away from the explosion-proof valve. According to the battery monomer, when the battery monomer meets the impact working condition, the protection piece can bear the impact of part of external impact force on the explosion-proof valve, so that the failure risk of the explosion-proof valve is reduced, and the safety of the battery monomer is improved.

Inventors

  • YUAN HAO
  • HU MINGJIANG
  • 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 having a first direction (Z), the battery cell comprising: a housing (110) provided with a through hole (1111) penetrating in the first direction (Z); A pole (120) penetrating the housing (110); An electrode assembly (130) disposed within the housing (110) and electrically connected to the post (120); An explosion-proof valve (140) connected with the housing (110) to cover the through hole (1111); The protection piece (150) is connected with one side of the shell (110) deviating from the electrode assembly (130) along the first direction (Z), the protection piece (150) and the explosion-proof valve (140) are arranged at intervals along the first direction (Z), an air ventilation port (1511) penetrating along the first direction (Z) is formed in the protection piece (150), and a part of the protection piece (150) protrudes along the first direction (Z) in a direction away from the explosion-proof valve (140).
  2. 2. The battery cell according to claim 1, wherein the battery cell has the first direction (Z), the second direction (Y) and the third direction (X) perpendicular to each other, the protection member (150) is integrally formed with the housing (110), the ventilation opening (1511) includes a plurality of ventilation holes (15111), and the plurality of ventilation holes (15111) are arranged at intervals along the second direction (Y) or the third direction (X).
  3. 3. The battery cell according to claim 1, wherein the protection member (150) includes a protruding portion (151) and a first connecting portion (152) that are connected, the first connecting portion (152) is disposed around the protruding portion (151), the protruding portion (151) is provided with the ventilation opening (1511), the protruding portion (151) is protruding in a direction away from the explosion-proof valve (140) along the first direction (Z), and the first connecting portion (152) is connected with the housing (110).
  4. 4. A battery cell according to claim 3, wherein the housing (110) is provided with a second connection part (1112) along the first direction (Z) on a side facing away from the electrode assembly (130), the housing (110) is provided with a third connection part (1113) along the first direction (Z) on a side facing towards the electrode assembly (130), the second connection part (1112) and the third connection part (1113) are arranged around the protruding part (151), and the first connection part (152) is arranged between the second connection part (1112) and the third connection part (1113).
  5. 5. A battery cell according to claim 3, characterized in that the side of the bulge (151) close to the explosion-proof valve (140) is provided with an indentation groove (1512), which indentation groove (1512) is recessed in a direction facing away from the explosion-proof valve (140).
  6. 6. The battery cell of claim 5, wherein the indentation groove (1512) comprises a first indentation groove (15121), a second indentation groove (15122), and a third indentation groove (15123), the first indentation groove (15121) and the second indentation groove (15122) being disposed apart, the third indentation groove (15123) being located between the first indentation groove (15121) and the second indentation groove (15122), and in communication with the first indentation groove (15121) and the second indentation groove (15122).
  7. 7. A battery cell according to claim 3, wherein the material of the protection member (150) is carbon fiber.
  8. 8. The battery cell according to any one of claims 1 to 7, wherein the housing (110) includes a cover plate (111) and a case (112) that are connected, the electrode assembly (130) is disposed in the case (112), the post (120) is disposed through the cover plate (111), the cover plate (111) is provided with the through hole (1111), and the explosion-proof valve (140) and the protector (150) are connected to the cover plate (111).
  9. 9. The battery cell according to any one of claims 1 to 7, wherein the housing (110) includes a cover plate (111) and a case (112) that are connected, the electrode assembly (130) is disposed in the case (112), the post (120) is disposed through the cover plate (111), the case (112) has a bottom wall (1122), the bottom wall (1122) is disposed opposite to the cover plate (111) in the first direction (Z), the through hole (1111) is disposed in the bottom wall (1122), and the explosion-proof valve (140) and the protector (150) are connected to the bottom wall (1122).
  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. The battery cell is an important component of a power battery pack in a new energy automobile. When the battery monomer meets the impact working condition, the explosion-proof valve is easy to be damaged by external impact force, so that the explosion-proof valve is invalid, and the safety of the battery monomer is influenced. Disclosure of utility model Therefore, the application aims to provide a battery cell and a battery pack, and aims to solve the technical problem that when the battery cell encounters an impact working condition, an explosion-proof valve is easy to damage by external impact force, so that the explosion-proof valve fails. 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 having a first direction, the battery cell comprising: A housing provided with a through hole penetrating in the first direction; The pole is penetrated and arranged on the shell; an electrode assembly disposed within the housing and electrically connected to the post; An explosion-proof valve connected with the housing to cover the through hole; The protection piece is connected with one side of the shell, which is away from the electrode assembly along the first direction, the protection piece and the explosion-proof valve are arranged at intervals along the first direction, the protection piece is provided with an air ventilation opening penetrating along the first direction, and a part of the protection piece is arranged along the first direction in a protruding way away from the explosion-proof valve. In one embodiment of the first aspect, the battery unit has a first direction, a second direction and a third direction perpendicular to each other, the protection member and the housing are integrally formed, the ventilation opening includes a plurality of ventilation holes, and the ventilation holes are arranged at intervals along the second direction or the third direction. In one embodiment of the first aspect, the protection member includes a protruding portion and a first connecting portion that are connected, the first connecting portion is disposed around the protruding portion, the ventilation opening is disposed on the protruding portion, the protruding portion protrudes in a direction away from the explosion-proof valve along the first direction, and the first connecting portion is connected with the housing. In one embodiment of the first aspect, the case is provided with a second connection part along a side facing away from the electrode assembly in the first direction, the case is provided with a third connection part along a side facing toward the electrode assembly in the first direction, the second connection part and the third connection part are disposed around the protruding part, and the first connection part is disposed between the second connection part and the third connection part. In one embodiment of the first aspect, an indentation groove is formed in a side, close to the explosion-proof valve, of the protruding portion, and the indentation groove is recessed in a direction away from the explosion-proof valve. In one embodiment of the first aspect, the indentation grooves include a first indentation groove, a second indentation groove, and a third indentation groove, the first indentation groove and the second indentation groove being disposed apart, the third indentation groove being located between and in communication with the first indentation groove and the second indentation groove. In one embodiment of the first aspect, the material of the protection member is carbon fiber. In one embodiment of the first aspect, the casing includes a cover plate and a casing that are connected, the electrode assembly is disposed in the casing, the electrode post is disposed through the cover plate, the cover plate is provided with the through hole, and the explosion-proof valve and the protection member are connected to the cover plate. In one embodiment of the first aspect, the casing includes a cover plate and a casing that are connected, the electrode assembly is disposed in the casing, the post is disposed through the cover plate, the casing has a bottom wall, the bottom wall and the cover plate are disposed opposite to each other along the first direction, the through hole is disposed on the bottom wall, and the explosion-proof valve and the protection member are connected to the bottom wall. In a