Method for charging a lithium ion battery
US10164456B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 22, 2017 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Jun 18, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for charging a lithium ion battery includes the steps of: 1) determining a maximum charging current I0 and a lowest anode potential η of the lithium ion battery at which no lithium precipitation occurs; 2) charging the lithium ion battery at a constant current of I1 which is greater than I0 for a charging time t1; 3) discharging the lithium ion battery at a constant current of I2 which is less than I0 for a discharging time t2, 5≤t1/t2≤50; 4) repeating steps 2) and 3) until a cutoff voltage of the lithium ion battery reaches V0 and standing the lithium ion battery for a standing time t3; and 5) charging the lithium ion battery at a constant current of I0 until the cutoff voltage of the lithium ion battery reaches V0 and charging the lithium ion battery to a cutoff current of I3 at a constant voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.