Power supply charger and method of charging
US7786699B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2006 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Nov 29, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00308
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply charger for charging battery cells divided into at least two battery cell groups, each battery cell group having an associated protector circuit module. The power supply charger comprises, for each battery cell group, a power converter, a constant-current and constant-voltage device connected to the power converter for selectively applying a voltage from the power converter across the battery cell group and a current sensing circuit. The power supply charger further comprises, for each battery cell of a battery cell group, a voltage sensing circuit and a balancer circuit. Finally, the power supply charger comprises a micro-controller operatively connected to the various components and is so configured as to, for each battery cell group, selectively apply a voltage across the battery cell group or decrease the voltage of individual battery cells in the battery cell group in response to sensed battery cell voltage and battery cell group current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.