Vehicular power supply apparatus and method of controlling the same
US6583602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2002 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | May 1, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lower battery block feeds low-voltage power to a low-voltage load. The lower battery block includes cells. At least one higher battery block is connected in series with the lower battery block, and cooperates with the lower battery block to feed high-voltage power to a high-voltage load. The higher battery block includes cells. A DC—DC converter transmits power from the higher battery block to the lower battery block. A controller detects an electric parameter of the lower battery block which relates to an average per-cell voltage in the lower battery block, and also an electric parameter of the higher battery block which relates to an average per-cell voltage in the higher battery block. The controller operates for controlling the DC—DC converter in response to the detected electric parameters to equalize the average per-cell voltage in the lower battery block and the average per-cell voltage in the higher battery block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.