Battery charging based on cost and life
US7782021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2007 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Dec 28, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S50/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
One embodiment of the present subject matter includes a system that includes a battery, an electric vehicle, the battery coupled to the electric vehicle to propel the electric vehicle, and a charging circuit to charge the battery. The embodiment includes a charging cost circuit to estimate a charging cost rate and to turn on the charging circuit. The embodiment also includes a timer circuit to provide a time signal to the charging cost circuit. The embodiment is configured such that the charging cost circuit is to turn on the charging circuit during a first time period in which the charging cost rate is below a first threshold until the battery reaches a first energy stored level, and to turn on the charging circuit during a second time period in which the charging cost rate is above the first threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.