Title:
WINDING CELL AND POUCH BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/199435
Kind Code:
A1
Abstract:
The present application relates to the technical field of lithium batteries. Provided are a winding cell and a pouch battery. The winding cell comprises a negative electrode plate, wherein the inner surface of a second bending area of the negative electrode plate in a winding direction is covered with a first adhesive paper layer, and projections of two ends of the first adhesive paper layer in the thickness direction of the winding cell are connected to or partially overlap with the projection of the winding head of the negative electrode plate in the thickness direction of the winding cell. Therefore, the situation in which a surface of a winding cell is uneven is alleviated, thereby facilitating the improvement of the flatness of a battery cell.
Inventors:
ZHANG BAOHAI (CN)
PENG CHONG (CN)
LI JUNYI (CN)
PENG CHONG (CN)
LI JUNYI (CN)
Application Number:
PCT/CN2022/081083
Publication Date:
September 29, 2022
Filing Date:
March 16, 2022
Export Citation:
Assignee:
ZHUHAI COSMX BATTERY CO LTD (CN)
International Classes:
H01M10/0587; H01M10/0525; H01M50/531
Foreign References:
| CN112886072A | 2021-06-01 | |||
| CN107408719A | 2017-11-28 | |||
| CN209389153U | 2019-09-13 | |||
| CN106169618A | 2016-11-30 | |||
| CN110364769A | 2019-10-22 | |||
| JP2005222884A | 2005-08-18 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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