Battery system
US6452361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery system for use in a vehicle is disclosed having a first battery for selectively powering the motor to start the engine, and having a first voltage level and a charge level. The system includes a second battery to operate and maintain the accessory electrical loads, and having a second voltage level. The system includes a charging switch coupling the first battery to the alternator. The system also includes a charge maintenance device coupling the first battery to the second battery to maintain the charge level of the first battery to a predefined magnitude in response to a control signal. The system also includes a controller coupled to both the first battery and the second battery to monitor the first voltage level and the second voltage level, and operating the charging switch and the charge maintenance device in response to the first voltage level and the second voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.