Methods for testing lithium ion battery and evaluating safety of lithium ion battery
US9250297B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 13, 2012 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | May 21, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/385
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for testing a lithium ion battery is disclosed. An under-test lithium ion battery including a cathode active material is provided. A reference voltage value is set according to the cathode active material. The under-test lithium ion battery is over charged, while an actual voltage change of the under-test lithium ion battery is tested during the over charging. A maximum voltage value is recorded before a first decrease in the actual voltage change of the under-test lithium ion battery during the over charging. The maximum voltage value is compared with the reference voltage value. A method for evaluating a safety of a lithium ion battery is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.