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CN-224217568-U - Secondary battery, battery pack and electric equipment

CN224217568UCN 224217568 UCN224217568 UCN 224217568UCN-224217568-U

Abstract

The application discloses a secondary battery, a battery pack and electric equipment, and belongs to the technical field of batteries, wherein the secondary battery comprises a shell, an electrode assembly, a top cover plate and a connecting terminal, and the shell is provided with a containing cavity and an opening communicated with the containing cavity; the electrode assembly is arranged in the accommodating cavity and comprises a main body and a tab arranged on the main body, one end of the tab is connected with the main body, the top cover plate is connected with the shell and covers the opening, the connecting terminal is arranged on the top cover plate and comprises a body part and a plurality of connecting parts integrally connected with the body part, the body part is arranged on the top cover plate in a penetrating mode, the connecting parts are arranged on one side, close to the electrode assembly, of the body part, the connecting parts are arranged at intervals, and the connecting parts are connected with the tab in an abutting mode. According to the application, the connecting part capable of being abutted with the lug is arranged, so that the connecting terminal can be stably connected with the lug, welding is not needed, and the generation of metal scraps is reduced.

Inventors

  • LI MINJIAN
  • YANG WEI

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250528

Claims (11)

  1. 1. A secondary battery, characterized by comprising: A housing (1), the housing (1) having a receiving chamber (11) and an opening (12) communicating with the receiving chamber (11); An electrode assembly (2), wherein the electrode assembly (2) is arranged in the accommodating cavity (11), the electrode assembly (2) comprises a main body (21) and a tab (22) arranged on the main body (21), and one end of the tab (22) is connected with the main body (21); A top cover sheet (3), the top cover sheet (3) being connected to the housing (1) and covering the opening (12); Connecting terminal (4), set up in top cap piece (3), connecting terminal (4) include body portion (41) and with a plurality of connecting portion (42) that body portion (41) are connected, the part of body portion (41) wears to locate top cap piece (3), body portion (41) have the orientation tab (22) first junction surface (411), a plurality of connecting portion (42) protrusion set up in first junction surface (411), a plurality of connecting portion (42) interval sets up, a plurality of connecting portion (42) with tab (22) butt links to each other.
  2. 2. The secondary battery according to claim 1, wherein the secondary battery has a first direction (X), a second direction (Y), and a third direction (Z) perpendicular to each other between two, a plurality of the connection portions (42) are provided to the first connection surface (411) so as to protrude in the first direction (X), the tab (22) extends in the second direction (Y), the connection portions (42) extend in the second direction (Y), a plurality of the connection portions (42) are provided at intervals in the third direction (Z), a gap (43) is formed between the connection portions (42) adjacent in the third direction (Z), and the tab (22) is interposed in the gap (43).
  3. 3. The secondary battery according to claim 2, wherein the connection portion (42) has two guide surfaces (421), the two guide surfaces (421) are located on both sides of the connection portion (42) in the third direction (Z), respectively, and the guide surfaces (421) are disposed obliquely with respect to the first direction (X), at least one of the guide surfaces (421) being connected to the tab (22).
  4. 4. The secondary battery according to claim 3, wherein the connecting portion (42) is connected to the first connecting surface (411), and two adjacent guide surfaces (421) located on the first connecting surface (411) in the third direction (Z) are connected to the first connecting surface (411), the first connecting surface (411) has a groove (44) extending in the second direction (Y), the groove (44) communicates with the gap (43), the groove (44) has groove walls (441), the groove (44) is provided between adjacent connecting portions (42) in the third direction (Z), and the groove walls (441) are connected to two guide surfaces (421) facing in the third direction (Z) adjacent to the connecting portions (42).
  5. 5. The secondary battery according to claim 1, wherein the secondary battery has a first direction (X), a second direction (Y), and a third direction (Z) perpendicular to each other between two, the tab (22) extends in the second direction (Y), the connection portion (42) extends in the second direction (Y), a plurality of the connection portions (42) are provided at intervals in the third direction (Z), and the connection portion (42) is elastically deformable in the first direction (X) toward the body portion (41) to connect the tab (22).
  6. 6. The secondary battery according to claim 5, wherein the connecting portion (42) includes a deformed end (424) and a pressed end (425) connected in the second direction (Y), the deformed end (424) is connected with the body portion (41), and the deformed end (424) is elastically deformable so that the pressed end (425) is movable toward the body portion (41).
  7. 7. The secondary battery according to claim 5, wherein a plurality of the connection portions (42) are provided at intervals along the second direction (Y).
  8. 8. The secondary battery according to claim 1, further comprising a connection layer (5), the connection layer (5) being disposed between the connection portion (42) and the tab (22), the connection layer (5) electrically connecting the connection portion (42) and the tab (22).
  9. 9. The secondary battery according to claim 1, wherein the body portion (41) and the connecting portion (42) are of a unitary structure.
  10. 10. A battery pack comprising the secondary battery according to any one of claims 1 to 9.
  11. 11. A powered device comprising a secondary battery as claimed in any one of claims 1 to 9, or comprising a battery pack as claimed in claim 10.

Description

Secondary battery, battery pack and electric equipment Technical Field The application belongs to the technical field of batteries, and particularly relates to a secondary battery and electric equipment. Background The tab and the post of the secondary battery are generally connected by welding to achieve electrical connection of the tab and the post. However, in the welding process, splashed metal scraps are extremely easy to generate, the track of the splashed metal scraps is uncontrollable and difficult to completely remove, and the metal scraps which are not removed before the core is closed can cause the secondary battery to generate short circuit in the use process, so that the use reliability and the service life of the secondary battery are reduced. Disclosure of utility model The utility model aims to provide a secondary battery which is used for solving the technical problem that metal scraps are easy to generate in the welding process of the electrode lugs and the electrode posts, and the other aim of the utility model is to provide a battery pack and the other aim of the utility model is to provide electric equipment. The application provides a secondary battery, comprising: a housing having a receiving chamber and an opening communicating with the receiving chamber; The electrode assembly is arranged in the accommodating cavity and comprises a main body and a tab arranged on the main body, and one end of the tab is connected with the main body; the connecting terminal is arranged on the top cover sheet, the connecting terminal comprises a body part and a plurality of connecting parts connected with the body part, the body part penetrates through the top cover sheet and is provided with a first connecting surface facing the tab, the connecting parts are arranged on the first connecting surface in a protruding mode, the connecting parts are arranged at intervals, and the connecting parts are connected with the tab in an abutting mode. In some embodiments, the secondary battery has a first direction, a second direction and a third direction perpendicular to each other, the plurality of connection parts are protruded along the first direction and arranged on the first connection surface, the tab extends along the second direction, the connection parts extend along the second direction, the plurality of connection parts are arranged at intervals along the third direction, a gap is formed between the adjacent connection parts along the third direction, and the tab clip is arranged on the gap. In some embodiments, the connecting portion has two guiding surfaces, the two guiding surfaces are respectively located at two sides of the connecting portion along the third direction, the guiding surfaces are obliquely arranged relative to the first direction, and at least one guiding surface is connected to the tab. In some embodiments, the connecting parts are connected to the first connecting surface, two adjacent guiding surfaces of the first connecting surface along the third direction are connected with the first connecting surface, the first connecting surface is provided with a groove extending along the second direction, the groove is communicated with the gap, the groove is provided with groove walls, the groove is arranged between the adjacent connecting parts along the third direction, and the groove walls are connected with two guiding surfaces of the adjacent connecting parts facing along the third direction Z. In some embodiments, the secondary battery has a first direction, a second direction and a third direction perpendicular to each other, the tab extends along the second direction, the connection part extends along the second direction, a plurality of connection parts are spaced apart along the third direction, and the connection part can elastically deform toward the body part along the first direction to connect the tab. In some embodiments, the first direction, the second direction, and the third direction are perpendicular to each other. In some embodiments, the connection portion includes a deformed end and a pressed end connected along the second direction, the deformed end being connected with the body portion, and the deformed end being capable of being elastically deformed such that the pressed end is capable of moving toward the body portion. In some embodiments, a plurality of the connection portions are disposed at intervals along the second direction. In some embodiments, the secondary battery further includes a connection layer disposed between the connection portion and the tab, the connection layer electrically connecting the connection portion and the tab. In some embodiments, the body portion and the connecting portion are a unitary structure. Accordingly, the present application also provides a battery pack comprising the secondary battery according to any one of the above embodiments. Correspondingly, the application also provides electric equipment, which comprises the