Apparatus and method for bucking voltage of battery pack
US7834589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2006 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Oct 9, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for discharging a voltage in a battery pack. The apparatus includes a discharge resistance connected to a discharge target battery of plural batteries in the battery pack and discharging a voltage of the discharge target battery, a switching section for connecting the discharge target battery and the discharge resistance, a voltage measuring section for measuring a voltage of the discharge target battery, and a control section for controlling the switching section depending on the measured voltage value of the battery. The method includes measuring a voltage of the discharge target battery, calculating a PWM duty rate of a switching section connecting the discharge target battery and a discharge resistance using the measured voltage value and a value of the discharge resistance, and controlling the switching section based on the duty rate to maintain an energy consumed in the discharge resistance to be constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.