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CN-224204211-U - Cover plate assembly and battery

CN224204211UCN 224204211 UCN224204211 UCN 224204211UCN-224204211-U

Abstract

The utility model belongs to the technical field of batteries, and discloses a cover plate assembly and a battery, wherein the cover plate assembly is connected with a battery cell and comprises a cover plate body, a pole, inner plastic and upper plastic, the cover plate body is connected with a binding part, the binding part comprises an outer binding and an inner binding, the outer binding is arranged on one side of the cover plate body, which is away from the battery cell, and the inner binding is arranged on one side of the cover plate body, which is towards the battery cell; the pole is arranged in the binding part, the inner plastic is arranged between the binding part and the pole, and the upper plastic is connected with the outer binding, the pole and the inner plastic. Therefore, through setting up outside binding and inboard binding, can realize two side binding designs and save the attenuate step, simplify forming process, avoid producing impurity such as metal wire, metal dust, reduce the short circuit risk to restrict the position of utmost point post and interior plastic, make utmost point post and binding portion insulation connection, improve the security of battery.

Inventors

  • LI JIANJU
  • LI CHANGXIE

Assignees

  • 深圳市科达利实业股份有限公司

Dates

Publication Date
20260505
Application Date
20250421

Claims (10)

  1. 1. A cover assembly connected to a cell, the cover assembly comprising: The battery cell comprises a cover plate body (1), wherein the cover plate body (1) is connected with a binding part (11), the binding part (11) comprises an outer binding (111) and an inner binding (112), the outer binding (111) is arranged on one side, deviating from the battery cell, of the cover plate body (1), and the inner binding (112) is arranged on one side, facing the battery cell, of the cover plate body (1); A pole (2), wherein the pole (2) is arranged inside the edging section (11); an inner plastic (3), wherein the inner plastic (3) is arranged between the binding part (11) and the pole (2); And the upper plastic (4) is connected with the outer side binding (111), the pole (2) and the inner plastic (3).
  2. 2. The cover plate assembly according to claim 1, characterized in that the pole (2) comprises a protrusion (21), the protrusion (21) being connected with the inner plastic (3).
  3. 3. The cover plate assembly according to claim 1, characterized in that the upper plastic (4) comprises a first portion (41) and a second portion (42) connected to each other, the first portion (41) being arranged between the pole (2) and the inner plastic (3), the second portion (42) being arranged surrounding the outer binding (111).
  4. 4. The cover plate assembly according to claim 1, characterized in that the projection of the outer rim (111) at least partially coincides with the projection of the pole (2) and/or the projection of the inner rim (112) at least partially coincides with the projection of the pole (2) in the thickness direction of the cover plate body (1).
  5. 5. The cover plate assembly according to claim 1, wherein an anti-torsion groove (113) is formed in the inner wall of the binding portion (11), and an anti-torsion block (31) is arranged at a position of the inner plastic (3) corresponding to the anti-torsion groove (113).
  6. 6. The cover plate assembly according to claim 5, wherein the depth of the anti-torsion groove (113) is less than or equal to 0.4mm.
  7. 7. The cover plate assembly according to claim 5, wherein at least two anti-torsion grooves (113) are provided, the anti-torsion grooves (113) are circumferentially arranged on the inner wall of the binding portion (11) at intervals, and the anti-torsion grooves (113) are arranged in one-to-one correspondence with the anti-torsion blocks (31).
  8. 8. The cover plate assembly according to any one of claims 1-7, wherein the wall thickness of the outer side piping (111) is less than or equal to 0.8mm, the height of the outer side piping (111) is less than or equal to 4.4mm, and/or the wall thickness of the inner side piping (112) is less than or equal to 0.8mm, the height of the inner side piping (112) is less than or equal to 3.3mm.
  9. 9. The cover plate assembly according to any one of claims 1-7, further comprising a sealing ring (6), the sealing ring (6) being arranged between the pole (2) and the inner binding (112).
  10. 10. A battery, characterized by comprising a battery cell, a housing and a cover plate assembly according to any one of claims 1-9, wherein the battery cell is arranged inside the housing, and the cover plate body (1) is connected with the housing.

Description

Cover plate assembly and battery Technical Field The utility model relates to the technical field of batteries, in particular to a cover plate assembly and a battery. Background The battery is widely applied to daily life, industrial production and modern technology, and the battery includes apron, casing and electric core, is connected with utmost point post and conducting block on the apron, and the conducting block passes through utmost point post and electric core electricity to realize supplying power to external circuit. The cover plate is usually connected with the upper plastic through a edging process, however, in the mold forming process, the cover plate with the existing single-side edging structure needs to thin the side which is not edging for two to three times, so that materials are extruded from the middle to the outer side edge, metal dust or metal wires can be accumulated when the edging equipment and the mold are poor in stability, the impurities are difficult to remove completely in the subsequent cleaning process, impurities such as metal wires and the like can be caused to contact with the polar posts in the assembly process of the cover plate, and the problems of high-voltage bad short circuit and the like are caused, so that the safety of the battery is influenced. Disclosure of utility model The utility model aims to provide a cover plate assembly and a battery, which are used for solving the problem that the cover plate of a single-side edging structure is high in short circuit risk. To achieve the purpose, the utility model adopts the following technical scheme: The cover plate assembly is connected with a battery cell and comprises a cover plate body, the cover plate body is connected with a binding portion, the binding portion comprises an outer binding and an inner binding, the outer binding is arranged on one side, away from the battery cell, of the cover plate body, the inner binding is arranged on one side, facing the battery cell, of the cover plate body, a pole is arranged inside the binding portion, inner plastic is arranged between the binding portion and the pole, and the upper plastic is connected with the outer binding, the pole and the inner plastic. Preferably, the pole comprises a protrusion connected with the inner plastic. Preferably, the upper plastic comprises a first portion and a second portion which are connected with each other, the first portion is arranged between the pole and the inner plastic, and the second portion is coated on the outer side of the pole. Preferably, the projection of the outer binding at least partially coincides with the projection of the pole in the thickness direction of the cover plate body, and/or the projection of the inner binding at least partially coincides with the projection of the pole. Preferably, an anti-torsion groove is formed in the inner wall of the binding portion, and an anti-torsion block is arranged at the position, corresponding to the anti-torsion groove, of the inner plastic. Preferably, the depth of the anti-torsion groove is less than or equal to 0.4mm. Preferably, the anti-torsion grooves are formed in at least two, the anti-torsion grooves are circumferentially arranged on the inner wall of the binding portion at intervals, and the anti-torsion grooves and the anti-torsion blocks are arranged in one-to-one correspondence. Preferably, the wall thickness of the outer side edge is less than or equal to 0.8mm, the height of the outer side edge is less than or equal to 4.4mm, and/or the wall thickness of the inner side edge is less than or equal to 0.8mm, and the height of the inner side edge is less than or equal to 3.3mm. Preferably, the cover plate assembly further comprises a sealing ring, and the sealing ring is arranged between the pole and the inner side binding. In a second aspect, a battery includes a battery cell, a housing, and a cover assembly as described above, where the battery cell is disposed inside the housing, and the cover body is connected to the housing. The utility model has the beneficial effects that: The cover plate assembly is connected with the battery core and comprises a cover plate body, a pole, inner plastic and upper plastic, wherein the cover plate body is connected with a binding portion, the binding portion comprises an outer binding and an inner binding, the outer binding is arranged on one side, away from the battery core, of the cover plate body, the inner binding is arranged on one side, facing the battery core, of the cover plate body, the pole is arranged inside the binding portion, the inner plastic is arranged between the binding portion and the pole, and the upper plastic is connected with the outer binding, the pole and the inner plastic. So, outside binding and inboard binding all are connected with interior plastic and limit the position of interior plastic and utmost point post, avoid the utmost point post to take place not hard up to two side binding can save th