Constant power output from emergency battery packs
US10559974B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2017 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Feb 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33507
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical system can include a power supply that provides primary power, and a light fixture having at least one light source, where the light fixture is coupled to the power supply, where the at least one light source illuminates when the light fixture receives the primary power. The electrical system can further include an energy storage unit having at least one energy storage device that charges using the primary power. The electrical system can also include a controller that determines an initial charging period during which the at least one energy storage device is charged using a constant supply of the primary power, where the controller changes the constant supply of the primary power to a trickle charge of the primary power at the end of the initial charging period to maintain a minimum charge level of the at least one energy storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.