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CN-224204310-U - Battery post, cover plate assembly and battery

CN224204310UCN 224204310 UCN224204310 UCN 224204310UCN-224204310-U

Abstract

The utility model provides a battery pole, a cover plate assembly and a battery, wherein the battery pole comprises a pole body, the pole body comprises at least two connected metal pieces, the outer wall of at least one metal piece and/or the boundary position of the outer wall of the adjacent metal piece are provided with concave parts. The utility model has the beneficial effects that the stress and heat generated by the electrode post of the battery in operation can be released, so that the stability of the battery is improved, and the probability of poor battery and damage is reduced.

Inventors

  • ZENG HAO
  • ZHENG XU
  • SHU KUANJIN
  • YAN BO
  • HE WEI

Assignees

  • 惠州亿纬动力电池有限公司
  • 惠州亿纬锂能股份有限公司

Dates

Publication Date
20260505
Application Date
20250319

Claims (13)

  1. 1. A battery post, comprising: The pole body (100), the pole body (100) comprises at least two connected metal pieces (100 a), and a concave part (200) is arranged at the outer wall of at least one metal piece (100 a) and/or at the boundary position of the outer walls of adjacent metal pieces (100 a).
  2. 2. The battery post according to claim 1, characterized in that the recess (200) is arranged at a distance from the boundary position at the outer wall of the metal piece (100 a).
  3. 3. The battery post according to claim 2, wherein a distance between an end of the recess (200) near the boundary position and the boundary position is less than or equal to 1.5mm.
  4. 4. The battery post according to claim 1, wherein adjacent metal pieces (100 a) are respectively provided with notches (200 a) near the outer walls of the boundary positions, and adjacent notches (200 a) are surrounded to form the recessed portions (200).
  5. 5. The battery post according to claim 1, characterized in that the outer walls of adjacent metal pieces (100 a) are arranged offset.
  6. 6. The battery post according to claim 5, characterized in that the normal distance X between the outer walls of adjacent metal pieces (100 a) is less than or equal to 5mm.
  7. 7. The battery post according to any one of claims 1 to 6, characterized in that the opening pitch of the cross section of the recess (200) is less than or equal to 3mm and/or the depth of the recess (200) is less than or equal to 3mm.
  8. 8. The battery post according to any one of claims 1 to 6, characterized in that the recess (200) is provided around the outer periphery of the metal piece (100 a).
  9. 9. The battery post according to claim 8, wherein the inner wall surface area of the recess (200) is less than or equal to 500mm 2 .
  10. 10. The battery post according to any one of claims 1 to 6, wherein at least one of the metal pieces (100 a) is made of a material different from the material of the metal piece (100 a) adjacent thereto.
  11. 11. Battery post according to claim 10, characterized in that the material of manufacture of two adjacent metal pieces (100 a) is copper and aluminum, respectively.
  12. 12. A cap plate assembly comprising the battery post of any one of claims 1-11.
  13. 13. A battery comprising a battery post according to any one of claims 1 to 11 or a cap plate assembly according to claim 12.

Description

Battery post, cover plate assembly and battery Technical Field The utility model relates to the technical field of batteries, in particular to a battery pole, a cover plate assembly and a battery. Background In the battery production and processing process, the pole is a part for communicating the inside and the outside of the battery in the battery, and as each part of the pole needs to be connected with different devices inside and outside the battery, the stability of the mutual connection is important, and the electrical property and the safety of the battery are directly influenced. In the related art, a plurality of columns are used to manufacture electrodes of a battery, for example, two different materials such as copper and aluminum are used to manufacture a pole column and form a negative pole column of the battery, so that when the battery is installed in the battery, stable connection with other structures of the battery is realized, and the cost is reduced while the electrical performance is ensured. However, when the electrode post is in use, the temperature of the electrode post is increased due to the current generated by the battery, and when a plurality of posts are used for forming the electrode of the battery, larger stress and heat are generated on the two posts, particularly at the contact position of the two posts, in this case, the working state of the battery is easily influenced, such as the stability of the battery is influenced, and the battery is easily damaged and has bad conditions. Disclosure of utility model The embodiment of the utility model provides a battery pole, a cover plate assembly and a battery, which can solve the technical problem that the battery pole is easy to generate stress and heat. In a first aspect, embodiments of the present utility model provide a battery post comprising: The pole body comprises at least two connected metal pieces, and a concave part is arranged at the outer wall of at least one metal piece and/or at the boundary position of the outer wall of the adjacent metal piece. In one embodiment, the recess is spaced apart from the boundary position at the outer wall of the metal member. In an embodiment, a distance between an end of the concave portion, which is close to the demarcation position, and the demarcation position is less than or equal to 1.5mm. In an embodiment, the outer walls of the adjacent metal pieces close to the demarcation position are respectively provided with a notch, and the adjacent notches surround to form the concave part. In an embodiment, the outer walls of the adjacent metal pieces are arranged in a staggered manner. In one embodiment, the normal distance X between the outer walls of adjacent metal pieces is less than or equal to 5mm. In an embodiment, the opening pitch of the cross section of the recess is less than or equal to 3mm and/or the depth of the recess is less than or equal to 3mm. In one embodiment, the recess is disposed around the periphery of the metal piece. In one embodiment, the surface area of the inner wall of the recess is less than or equal to 500mm 2. In one embodiment, at least one of the metallic pieces is made of a material different from the material of the metallic piece adjacent thereto. In one embodiment, the materials of manufacture of two adjacent metal pieces are copper and aluminum, respectively. In an embodiment, the pole body is formed by a copper-aluminum composite plate. In a second aspect, embodiments of the present utility model provide a cap plate assembly comprising a battery post as described above. In a third aspect, embodiments of the present utility model provide a battery comprising a battery post as described above or a cap plate assembly as described above. The embodiment of the utility model has the beneficial effects that: In the embodiment of the utility model, the concave part is formed at the outer wall of the metal piece or at the boundary position where the adjacent metal pieces are connected, so that the stress and heat generated by the electrode post of the battery in operation can be released through the concave part, the stability of the battery can be improved, the probability of poor battery and damage is reduced, and the long-time stable operation of the battery is ensured. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic cross-sectional view of a first structure of a battery post according to an embodiment of the present utility model; FIG. 2 is an enlarged schematic view of FIG. 1 at M; FIG. 3 is a schematic partial cross-s