Multiple device battery charger
US7638971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2007 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved method of charging multiple batteries and battery powered devices of different types at one time. Utilizing multiple methods of supplying DC power to external batteries, a user can charge a variety of devices at the same time. The power is routed in three distinct ways: directly to the output ports, through resistors, and through a switch converter. Then, using methods established and known to one in the art, external electronic devices may be attached to the output ports. Thus, the external battery will be charged through whichever route delivers the proper voltage. This design utilizes the logic contained within the external device for charging purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.