Method for equalizing the voltage of traction battery modules of a hybrid electric vehicle
US5869950A · kind A · utility
69Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1997 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Oct 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/907
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid electric vehicle includes a lead-acid traction battery made up of a plurality of series-connected modules. During operation of the vehicle, the traction battery is discharged for acceleration, and charged by an ancillary power source. To maximize the capacity of the traction battery to accept regeneration charge current from dynamic braking, and to produce useful traction motor current, the modules of the traction battery are equalized during normal operation of the hybrid electric vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.