Battery pack for miner's cap lamp with charging and discharging control module
US8729851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2008 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Oct 24, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery pack features a shock-absorbing and sealed construction and an electronic control module that provides automatic recovery circuitry in the event of a short circuit in the load whereby the power is terminated and then restarted at a lower level so that removal of the short circuit may be detected. Full power is restored to the load when the short circuit is removed. In addition, the electronic control module of the battery pack uses the battery pack load, such as a cap lamp, to provide an indication of a low battery charge level. The electronic control module also provides a soft-start feature where the power provided to the bulb is ramped up to avoid current in-rush to the bulb during startup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.