Method and apparatus for determining deterioration of secondary battery, and power supply system therewith
US7626394B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2008 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Mar 17, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/392
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting SOC and SOH of a storage battery includes: calculating an SOC value of the storage battery with use of an SOC calculation unit based on a measured voltage value or a measured current value of the storage battery and calculating an SOH value of the storage battery with use of an SOH calculation unit based on the SOC value; further calculating a new SOC value with use of the SOC calculation unit based on the SOH value and calculating a new SOH value with use of the SOH calculation unit based on the new SOC value, these further calculations of SOC value and SOH value being repeated a prescribed n times of at least one so as to obtain an nth calculated SOC value and an nth calculated SOH value; outputting the nth calculated SOH value as an SOH output value and outputting the nth calculated SOH value as an SOC output value; and storing the SOH output value into a memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.