Short circuit protection for a portable device powered by a battery pack having undervoltage protection
US9543772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2014 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jan 31, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable device includes set of charger contacts and a set of battery contacts. The battery contacts mate with corresponding contacts of a battery pack used to power the portable device, and the charger contacts allow charging of the battery pack while connected to the portable device. The battery pack includes an undervoltage protection circuit that opens when an undervoltage condition occurs across the battery pack contacts. The portable device further includes short circuit protection element connected between corresponding contacts of the set of battery contacts and the set of charger contacts that, upon a short circuit condition occurring at the charger contacts, prevents the undervoltage protection circuit from tripping and opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.