Method and apparatus for detecting cell voltage of battery pack
US7589534B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 2006 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Mar 30, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3842
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method and apparatus for detecting a cell voltage of a battery pack. The method comprises the steps of storing an impedance of the conductive wire from a part connected to a voltage detector to a part connected with the corresponding battery cell existing between voltage measuring points of each battery cell, detecting current of the battery pack, multiplying the impedance of the conductive wire corresponding to each battery cell and the current to calculate a voltage correction value of each battery cell, detecting voltage of each battery cell, and correcting the voltage of each battery cell, with respect to the voltage correction value of each battery cell such that the voltage correction value corresponding to the voltage of each battery cell is subtracted during charging and the voltage correction value corresponding to the voltage of each battery cell is added during discharging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.