Device for estimating parameters of battery, and estimation method
US10295607B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 27, 2013 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Aug 2, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for estimating parameters of battery capable of improving, by using simple calculations, estimation accuracy of a parameter and the like of a battery equivalent circuit model will be provided.The device for estimating parameters of battery for estimating the parameter of a battery (1) includes: a battery equivalent circuit model (4A) including resistance and a capacitor as the parameter; a logarithmic conversion parameter value estimation unit (4B) for sequentially estimating, by using a logarithmic conversion parameter value serving as a state variable obtained by carrying out logarithmic conversion on the parameter, the logarithmic conversion parameter value with a Kalman filter (41) from a state equation and an output equation, based on a charging/discharging current and a terminal voltage those being detected; and an inverse logarithmic conversion unit (4C) for obtaining, from the logarithmic conversion parameter value, an estimated parameter value serving as an antilogarithm corresponding to the logarithmic conversion parameter value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.