State of health estimation for batteries
US11101669B2 · kind B2 · utility
1Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2019 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Mar 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3842
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining a state of health of a rechargeable battery includes: determining a change in charge within an upper border and a lower border of a charging state window, the change in charge being determined by summing up current values measured within the charging state window; determining an actual state of health by scaling the change in charge with the width of the charging state window and dividing by an initial charging capacity of the battery; and determining an average state of health by calculating a sliding average of the actual state of health with at least one previous determined state of health.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.