Invention Application
- Patent Title: LITHIUM-ION BATTERY AND ELECTRONIC DEVICE
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Application No.: US17940395Application Date: 2022-09-08
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Publication No.: US20230006265A1Publication Date: 2023-01-05
- Inventor: Ting ZHANG , Daoyi JIANG , Hang CUI
- Applicant: Ningde Amperex Technology Limited
- Applicant Address: CN Ningde
- Assignee: Ningde Amperex Technology Limited
- Current Assignee: Ningde Amperex Technology Limited
- Current Assignee Address: CN Ningde
- Main IPC: H01M10/0587
- IPC: H01M10/0587 ; H01M10/0525 ; H01M50/46 ; H01M4/505 ; H01M4/525 ; H01M4/38 ; H01M4/58 ; H01M10/04 ; H01M10/44 ; H01M50/417 ; H01M50/426

Abstract:
A lithium-ion battery, including a battery cell, an electrolytic solution, and a packaging film. The battery cell is formed by winding a positive electrode plate and a negative electrode plate that are separated by a separator. The lithium-ion battery is half-charged to obtain a half-charged full battery. The half-charged full battery is stripped of the packaging film to obtain a half-charged cell. When a width of the half-charged full battery is w1, a width of the half-charged cell is w2, and g=w2/w1, the following conditional expression (1) is satisfied: 0.4
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