Battery cell, method for manufacturing battery cell, and kit for assembling battery cell
In the welding process of battery cells, the current collector plate is welded to the can and the cap is welded to the side wall members, and the design of the outer peripheral contact surface and inner diameter enlarged part is solved, and the problems of low efficiency and insolid welding are not solved in the separate welding process. , realizes efficient and stable battery cell production.
CN119108765APending Publication Date: 2024-12-10LG ENERGY SOLUTION LTD
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Patent Information
- Application Number
- CN202410707970.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-05-28
- Filing Date
- 2024-06-03
- Publication Date
- 2024-12-10
Smart Images
Figure CN119108765A_ABST
Abstract
The invention provides a battery cell, a method for manufacturing the battery cell and a kit for assembling the battery cell. A battery cell includes a collector plate having an axially extending can connection portion press-fitted within a side wall member having a plurality of stages of inner peripheral surfaces having different inner diameters. A battery cell is manufactured by inserting a cap into an open end of a can such that an axially inner surface of the cap contacts an axially outward end surface of a can connection portion and such that an outer peripheral surface of the cap contacts an inner peripheral surface of a side wall member. Then, laser light is irradiated in the axial direction on a region where the inner peripheral surface of the side wall member and the outer peripheral surface of the cap are in contact with each other, so as to form a triple welded portion.
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