Controlling battery charging based on current, voltage and temperature
US8624560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2009 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 4, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Some embodiments of the present invention provide a system that charges a lithium-ion battery. During operation, the system monitors: a current through the battery, a voltage of the battery, and a temperature of the battery. Next, the system uses the monitored current, voltage and temperature to control a charging process for the battery. In some embodiments, controlling the charging process involves: inferring electrode lithium surface concentrations for the battery from the monitored current, voltage and temperature; and applying the charging current and/or the charging voltage in a manner that maintains the inferred electrode lithium surface concentrations for the battery within set limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.