Battery life predicting device and battery life predicting method
US8035395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2007 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Dec 14, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/367
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A battery life predicting device and a battery life predicting method capable of accurately predict the lifetime of storage batteries are provided. The expected lifetime value selecting unit 7 selects, as an expected lifetime value, a lifetime value that corresponds to the load power applied by the storage battery during discharge and the ambient temperature of the location where the storage battery 3 is installed while referring to the lifetime data stored in the lifetime data storing unit 5, the first diminution in lifetime calculating unit 12a calculates the first diminution in lifetime based on a natural logarithm function that takes the time obtained by converting the number of discharge cycles of the storage battery 3 as a variable, the second diminution in lifetime calculating unit 12b calculates the second diminution in lifetime from the mean value of the storage battery temperatures during charging, discharging or an idle state, the ambient temperature and the time elapsed after the installation of the storage battery 3, and the remaining lifetime value calculating unit 12c calculates the remaining lifetime value by subtracting the first diminution in lifetime and the seco…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.