Title:
BATTERY CELL, BATTERY, ELECTRIC APPARATUS, WELDING METHOD, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/086992
Kind Code:
A1
Abstract:
The present application relates to the technical field of batteries, and discloses a battery cell, a battery, an electric apparatus, a welding method, and a device. The battery cell comprises: an end cover, the end cover comprising a liquid injection hole; and a sealing member, the sealing member being sealedly connected to the liquid injection hole. A first welding section and a second welding section are formed between the sealing member and the end cover; at least part of the first welding section and at least part of the second welding section jointly define an annular weld joint of the sealing member; the first welding section is formed by means of continuous laser; and the second welding section is formed by means of pulse laser. Because the present application combines the high welding rate of the continuous laser and the high yield of the pulse laser, the problems of low welding speed and low yield in the welding process of the sealing member can be avoided, thereby facilitating improvement of the welding rate and the welding yield of the sealing member.
Inventors:
CHEN CONGSHENG (CN)
LIN WENFA (CN)
DING YU (CN)
WEN YAOLING (CN)
LIN WENFA (CN)
DING YU (CN)
WEN YAOLING (CN)
Application Number:
PCT/CN2022/127138
Publication Date:
May 02, 2024
Filing Date:
October 24, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/636; B23K26/21; H01M50/645
Foreign References:
| CN114074220A | 2022-02-22 | |||
| CN217214996U | 2022-08-16 | |||
| CN107335914A | 2017-11-10 | |||
| JP2013240801A | 2013-12-05 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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