Method for manufacturing lithium ion battery
US11502342B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2020 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Jun 17, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
(a) A battery including a power storage element and an electrolytic solution is assembled. (b) Initial charging is performed on the battery. (c) Alternate charging and discharging are performed on the battery after the initial charging. In the alternate charging and discharging, charging and discharging are alternately performed once or more respectively at a voltage between 4.0 V and 4.1 V and a current rate of 0.6 C or higher. The total number of times of charging and discharging is 3 or greater. The charging is performed such that the voltage changes by 0.05 V or higher and 0.1 V or lower whenever the charging is performed once. The discharging is performed such that the voltage changes by 0.05 V or higher and 0.1 V or lower whenever the discharging is performed once.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.