Lithium ion battery capable of being discharged to zero volts
US6596439B1 · kind B1 · utility
70Cited by
20References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Sep 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4911
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium ion battery particularly configured to be able to discharge to a very low voltage, e.g. zero volts, without causing permanent damage to the battery. More particularly, the battery is configured to define a Zero Volt Crossing Potential (ZCP) which is lower than a Substrate Dissolution Potential (SDP) to thus avoid low voltage substrate damage. The configuration includes a lithium nickel cobalt oxide positive active material combined with negative electrode comprising a titanium or titamum alloy substrate having a carbon active material formed thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.