Method and system to measure series-connected cell voltages...

Details Method and system to measure series-connected cell voltages... Method and system to measure series-connected cell voltages...

2010-08-10

2011-11-15

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C320S166000, C320S116000

Reexamination Certificate

active

08058847

ABSTRACT:
A method and system for measuring voltage of individual cells connected in series includes a pair of busses connectable to the cells and a flying capacitor connectable to the busses. The capacitor stores the charge of one of the cells such that an analog-to-digital converter (ADC) connected to the capacitor may process an accurate representation of the voltage of the cell being measured. In order to prevent electrical interference with the capacitor and the ADC, the charge on the busses is reduced prior to measurement by the ADC.

REFERENCES:
patent: 5652502 (1997-07-01), Van Phuol et al.
patent: 5955869 (1999-09-01), Rathmann
patent: 6362627 (2002-03-01), Shimamoto et al.
patent: 2003240806 (2003-08-01), None
patent: 2003240806 (2003-08-01), None
Machine Translation of JP 2003240806 A. Saigo, Tsutomu. Cell Voltage Measurement Device for Battery Pack and It's Method, Aug. 2003.
PCT/US08/00197, PCT Search Report dated Jun. 25, 2008.
PCT/US08/00197, PCT Written Opinion dated Jun. 25, 2008.

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