Power storage system including a plurality of battery modules and on/off devices or voltage converters
US8653792B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 30, 2008 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Mar 9, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.