Secondary battery activation method with enhanced ability to detect low voltage
US12068465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2020 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Feb 25, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A secondary battery activation method includes a pre-aging step for aging, at room temperature, a secondary battery comprising a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material, a separator disposed between the positive electrode and the negative electrode, and an electrolyte; a charging step for primarily charging the pre-aged secondary battery to 60% or more of state of charge (SOC) of the secondary battery; a high-temperature aging step for aging the primarily charged secondary battery at a high temperature; and a room-temperature aging step for aging, at room temperature, the secondary battery which has been aged at a high temperature, wherein the high-temperature aging step is performed at a temperature of 60° C. or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.