Battery state estimation device, battery state management system, battery, battery state estimation method, and non-transitory storage medium
US10073147B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2014 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Nov 13, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/396
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The state of a battery parameter at the time of state estimation is estimated by using a plurality of pieces of parameter transition information (k, k+1), each piece of information representing an aspect of a temporal change in the battery parameter and representing the aspect of the temporal change until a predetermined state is achieved after a predetermined time that has elapsed from an initial state for each of use environments of a battery, and use environment information representing the use environment of the battery from the time of the start of use to the time of state estimation. In a case where the use environment of the battery is transited from a k-th use environment to a (k+1)-th use environment, a battery parameter pk after being used in the k-th use environment is calculated by using the parameter transition information k corresponding to the k-th use environment, and thereafter a battery parameter pk+1 after the battery in the state of the battery parameter pk is used in the (k+1)-th use environment is calculated by using the parameter transition information k+1 corresponding to the (k+1)-th use environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.