Battery state estimation device and power system
US12416681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2022 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Jun 19, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The purpose of the present invention is to provide a technique capable of accurately estimating SOH without relying on a calculation standard of a capacity change when obtaining the SOH. The battery state estimation device according to the present invention specifies a first period and a second period in a stop period after a battery has completed charging or discharging and refers to the relationship between an estimated value of the state of health of the battery and a measured value of the state of health, thereby estimating the measured value, said estimated value being obtained using the difference between the output voltages in the second period (refer to FIG. 5A).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.