Cell balancing battery module and electrical apparatus
US11239670B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 11, 2019 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Jun 19, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cell balancing battery module comprising: a cell string having N ports in series; a maximum and minimum finding circuit coupled with the N ports and the at least one switched capacitor comparison circuit for performing a voltage comparison procedure to find a highest voltage port number and a lowest voltage port number, the voltage comparison procedure including a plurality of voltage comparison operations using two phases of at least one switched capacitor comparison circuit; a charge and discharge connecting circuit coupled with the N ports and an inductor, and being configured to select a highest voltage port out of the N ports according to the highest voltage port number to deliver energy to the inductor, and select a lowest voltage port out of the N ports according to the lowest voltage port number to receive energy released from the inductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.