Temperature-controlled battery reserve system and method of operation thereof
US5710507A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Apr 26, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/007194
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
For use in a battery reserve system having a reserve battery, a charging circuit coupled between a source of electrical power and the reserve battery for charging the reserve battery and a heating element in thermal communication with the reserve battery for increasing a temperature of the battery, a mode selection circuit and method of operation thereof. The mode selection circuit includes: (1) a temperature transducer, coupled to the reserve battery, for sensing the temperature of the reserve battery and (2) a mode-changing circuit, coupled to the temperature transducer, for selecting an alternative one of: (a) a heating mode wherein the source of electrical power is coupled to the heating element when the temperature of the reserve battery is less than a reference temperature thereby to heat the reserve battery and (b) a charging mode wherein the source of electrical power is coupled to the reserve battery when the temperature is greater than the reference temperature thereby to charge the reserve battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.