Maximum and minimum power limit calculator for batteries and battery subpacks
US7333902B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2006 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Nov 14, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for determining an operating limit of at least one battery according to some embodiments of the present invention comprises a voltage module that measures a voltage V across at least one battery during first and second periods. A current sensor that measures current I supplied by the at least one battery during the first and second periods. A limit module estimates an ohmic resistance R0 based on at least one of a temperature of the at least one battery and a time difference between the first and second periods, and that estimates a sum of a polarization voltage VP and an open circuit voltage V0 of the at least one battery at the second period based on the voltage V and current I of the at least one battery at the first period and an ohmic resistance R0 of the at least one battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.