Battery charging using a portable energy storage device
US6737830B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jul 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery charger provides remote or untethered charging of a rechargeable battery. The battery charger provides untethered charging either in situ within a battery-powered device or external to the device. The battery charger comprises a power converter and an energy storage device connected to the power converter. A battery charging system comprises the battery charger and independent electrical connection devices. One connection device connects the battery charger to an external energy source to acquire energy that is stored in the storage device. Another connection device connects the battery charger to a battery for charging. The connection devices are independent and battery charging is untethered in that the battery charger need not be connected to the external energy source while the battery charger charges the battery. A method of charging the battery comprises charging the battery with energy stored in a portable energy storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.