Method and apparatus for calculating SOH of battery power pack, and electric vehicle
US11346887B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2019 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Mar 25, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a method for calculating the SOH of a battery power pack. The method comprises the following steps: acquiring a charging curve of a cell of a battery power pack, and determining a current charging phase according to the charging curve, wherein the charging phase comprises a high voltage charging inflection point and a high voltage charging phase (S1); acquiring a battery pack power amount corresponding to the high voltage charging inflection point and a battery pack power amount corresponding to the high voltage charging phase (S2); calculating the remaining capacity of a cell according to the battery pack power amount corresponding to the high voltage charging inflection point and the battery pack power amount corresponding to the high voltage charging phase (S3); and calculating the SOH of the cell according to the remaining capacity (S4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.