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CN-224232893-U - Battery device and electricity utilization device

CN224232893UCN 224232893 UCN224232893 UCN 224232893UCN-224232893-U

Abstract

The application discloses a battery device and an electricity utilization device, which relate to the technical field of batteries, wherein the battery device comprises: the shell is provided with an end cover, an electrode terminal is arranged on the end cover, the electrode assembly is arranged in the shell, the electrode assembly is opposite to the end cover and is spaced apart from the end cover, the electric switching piece is arranged in the shell and is positioned between the electrode assembly and the end cover, the electric switching piece is connected with the electrode terminal and the electrode assembly, the lower plastic is arranged in the shell along the arrangement direction of the electrode assembly and the end cover, the lower plastic is positioned between the electric switching piece and the end cover and is abutted against the electric switching piece, the lower plastic is spaced apart from the electrode assembly, and the side wall of the lower plastic is abutted against the shell. According to the battery device, the lower plastic is arranged to be spaced from the electrode assembly, and the side wall of the lower plastic is abutted against the shell, so that the probability of deformation of the electrode assembly can be reduced, the risk of short circuit inside the battery device or self-discharge of the battery device can be reduced, and the reliability of the battery device can be improved.

Inventors

  • DU XIANGLONG

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250320

Claims (12)

  1. 1. A battery device, characterized by comprising: A case having an end cap mounted with an electrode terminal; An electrode assembly disposed within the housing, the electrode assembly and the end cap being opposite and spaced apart; An electrical adapter disposed within the housing and between the electrode assembly and the end cap, the electrical adapter connecting the electrode terminal and the electrode assembly; The lower plastic is arranged in the shell, along the arrangement direction of the electrode assembly and the end cover, is positioned between the electric adapter and the end cover and is abutted to the electric adapter, is spaced apart from the electrode assembly, and is abutted to the shell.
  2. 2. The battery device of claim 1, wherein a surface of the lower plastic facing the electrode assembly has a first boss and a second boss, the first boss and the electrical adapter being opposed and abutting, the second boss being adjacent to a circumferential edge of the lower plastic and extending circumferentially of the lower plastic, the second boss and the first boss being adjacent, an outer peripheral surface of the second boss being configured as a guide ramp to facilitate assembly of the lower plastic within the housing, the second boss and the electrode assembly being opposed and spaced apart.
  3. 3. The battery device of claim 2, wherein the first boss has a projection height dimension equal to a projection height dimension of the second boss.
  4. 4. The battery device according to claim 2, wherein the second boss has a projection height dimension H1, and the first boss has a width dimension D1 along the arrangement direction of the first boss and the second boss, satisfying the relation 0.2≤H2/D1≤0.6.
  5. 5. The battery device of claim 2, wherein the first boss has a projection height dimension that is less than a projection height dimension of the second boss.
  6. 6. The battery device according to claim 5, wherein the second boss has a protruding height dimension H1 and the first boss has a protruding height dimension H2, satisfying the relation 1< H1/H2≤1.2.
  7. 7. The battery device according to claim 2, wherein the width dimension of the second boss is D2, the protruding height dimension of the first boss is H2, and the relation is 0.3H2≤D2≤ 0.6H2 along the arrangement direction of the first boss and the second boss.
  8. 8. The battery device of claim 2, wherein the first boss is arcuate and extends circumferentially of the lower plastic.
  9. 9. The battery device of any one of claims 2-8, wherein the second boss is annular.
  10. 10. The battery device of claim 9, wherein the first bosses are a plurality of the first bosses being sequentially spaced apart along the circumference of the lower plastic.
  11. 11. The battery device of any one of claims 1-8, wherein the battery device is cylindrically configured.
  12. 12. An electric device characterized by comprising a battery device according to any one of claims 1-11.

Description

Battery device and electricity utilization device Technical Field The present application relates to the field of battery technologies, and in particular, to a battery device and an electric device having the same. Background In the related art, the battery device is provided with lower plastic, the edge of the lower plastic is easy to squeeze an electrode assembly in the battery device, so that the electrode assembly is deformed, the electrode lugs are inserted downwards to cause internal short circuit of the battery device, and if the pole pieces are folded, the self-discharging problem of the battery device is caused, so that the reliability of the battery device is affected. Disclosure of utility model The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present application is to provide a battery device in which the probability of deformation of an electrode assembly can be reduced, the risk of occurrence of a short circuit inside the battery device or self-discharge of the battery device can be reduced, and the reliability of the battery device can be improved. The application also provides an electric device using the battery device. In a first aspect, an embodiment of the application provides a battery device, comprising a housing, an electrode assembly, an electric adapter and lower plastic, wherein the housing is provided with an end cover, an electrode terminal is arranged on the end cover, the electrode assembly is arranged in the housing, the electrode assembly is opposite to and spaced from the end cover, the electric adapter is arranged in the housing and positioned between the electrode assembly and the end cover, the electric adapter is connected with the electrode terminal and the electrode assembly, the lower plastic is arranged in the housing along the arrangement direction of the electrode assembly and the end cover, the lower plastic is positioned between the electric adapter and the end cover and is in abutting connection with the electric adapter, the lower plastic is spaced from the electrode assembly, and the side wall of the lower plastic is in abutting connection with the housing. In the technical scheme, the lower plastic is arranged to be spaced apart from the electrode assembly, and the side wall of the lower plastic is abutted against the shell, so that the deformation probability of the electrode assembly can be reduced, the risk of short circuit or self discharge of the battery device can be reduced, and the reliability of the battery device can be improved. In some embodiments, the surface of the lower plastic facing the electrode assembly has a first boss and a second boss, the first boss being opposite and abutting the electrical adapter, the second boss abutting a peripheral edge of the lower plastic and extending circumferentially of the lower plastic, the second boss abutting the first boss, an outer peripheral surface of the second boss configured as a guide ramp to facilitate assembly of the lower plastic within the housing, the second boss being opposite and spaced apart from the electrode assembly. In the above technical scheme, through setting up down the plastic and having first boss and second boss, first boss can be relative and the butt with the electric adaptor, and the second boss can be relative and spaced apart with electrode assembly, and when spacing the electric adaptor, the electrode assembly can normally work down the plastic, can further improve electrode assembly's reliability, is favorable to improving battery device's reliability more. In some embodiments, the projection height dimension of the first boss is equal to the projection height dimension of the second boss. In the above technical scheme, through setting up the protrusion height dimension of first boss and equal to the protrusion height dimension of second boss, be favorable to making second boss and electrode assembly interval setting more, can realize better protection electrode assembly's effect, make electrode assembly can normally work, thereby further reduce electrode assembly and warp the risk that thereby lead to battery device inside to take place short circuit or battery device self discharge, be favorable to improving battery device's reliability more to the production and processing of plastic down of being convenient for is favorable to reduce cost. In some embodiments, the second boss has a projection height dimension H1 and a width dimension D1 along the arrangement of the first boss and the second boss, satisfying the relationship 0.2≤H1/D1≤0.6. In the above technical scheme, through rationally setting up the protruding high size of second boss and the width dimension of first boss, can enough make the structural stability of plastic down, make the plastic down can play good insulation and guard action, can also make the second boss can be spaced apart with electrode assembly, can realize prot