Battery state detection device and vehicle device
US11609274B2 · kind B2 · utility
2Cited by
0References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Jul 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2220/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle-mounted device for detecting battery state comprises a controller, a load unit, and a switch unit. The load unit is coupled to the battery, the switch unit is coupled between the battery and the load unit. The controller can control the switch unit to disconnect or connect the battery and the load unit at a predefined frequency. The controller can switch the load unit to generate ripple voltage on the battery, and measure the ripple voltage of each battery cell, an abnormal state of a battery can be determined according to the ripple voltage of each battery cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.