Charge equalization apparatus for series-connected battery string using regulated voltage source
US8723480B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 17, 2009 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Apr 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0019
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automatic charge equalization apparatus using a regulated voltage source according to the present invention comprises a battery module having a plurality of batteries connected in series; a battery string having M (natural number of M≧2) battery modules connected in series: a regulated voltage source which is provided for each battery module and outputs and maintains an average voltage of the battery string; a bidirectional switch block which is provided for each battery module between the battery module and the regulated voltage source to connect each battery to an output of the regulated voltage source by forming a parallel current moving path to each battery composing the battery module; and a microprocessor controlling the bidirectional switch block, wherein each battery composing the battery module shares the regulated voltage source by the bidirectional switch block and the microprocessor controls the bidirectional switch block to successively connect the batteries composing the battery module with the regulated voltage source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.