Multiple battery charge equalizer
US6452363B1 · kind B1 · utility
26Cited by
20References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Dec 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge equalizer for a string of series-connected batteries includes a shunt path for each of the batteries. The equalizer measures the voltage of each of the batteries of the string and then closes a switch in the shunt path associated with the highest voltage battery for a predetermined time. Then the switches of all of the shunt paths are opened and the cycle repeats. In this way, charging is equalized in the batteries of the string, regardless of whether or not any of the batteries of the string is in an over charged condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.