Secondary battery diagnostic device
US11567139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2021 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Apr 1, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A diagnostic device for a secondary battery which is an all-solid-state battery containing a solid electrolyte transporting lithium ions, in which the diagnostic device includes: an interruption means configured to interrupt a charging current or a discharging current of the secondary battery connected to a circuit; a measuring means configured to measure over time a variation characteristic of a terminal voltage of the secondary battery after the current is interrupted by the interruption means; and a diagnostic means configured to diagnose the cause of the degradation of the secondary battery by comparing a change rate or a change amount in voltage between a charging characteristic specified from measured values of a terminal voltage of the secondary battery measured by the measuring means, a charging/discharging characteristic specified from the measured values of the terminal voltage measured by the measuring means, and a reference characteristic of the secondary battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.