Battery control system
US6600293B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2002 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Jul 26, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery control system capable of relatively smoothly canceling memory effects caused to a battery mounted on a hybrid vehicle, while avoiding deterioration of the battery and vehicle performance. Upon detection of generation of charge memory effects, an HVECU changes the center of a control range for the battery's charged amount (SOC) from its ordinary value to a value in the vicinity of an upper limit of an appropriately charged range. This SOC control is continued for a predetermined amount of time for cancellation of charge memory effects. Under such control, SOC basically varies within a range lower than where excessive charging may possibly be caused, so that battery deterioration due to excessive charging and droped power consumption due to prohibited charging can be prevented. Meanwhile, upon detection of discharge memory effects, the center of the control range is set at a value in the vicinity of a lower limit of an appropriately charged range, so that deterioration of vehicle's dynamic performance is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.