Voltage measurement device

Details Voltage measurement device Voltage measurement device

2005-10-05

2009-06-23

Tso, Edward (Department: 2838)

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

C320S134000, C324S678000

Reexamination Certificate

active

07550945

ABSTRACT:
A voltage measurement device includes: a charging circuit100having a first switch group of semiconductor elements P1, P2for connecting voltages of respective blocks, into which a plurality of voltage sources VCnare divided, to a charging condenser Cnand a second switch groups of semiconductor elements N3, N4for connecting the voltage of each block accumulated in the charging condenser Cnto an output terminal; an A/D converter120connected to an output terminal of the charging circuit100; and a CPU130measuring a stray capacitance including a parasitic capacitance of the semiconductor element N4in advance and further calculates an error voltage due to electrical charges accumulated in the parasitic capacitance. The CPU130further calculates a true value of the voltage of each block by subtracting the error voltage from a measured value of terminal voltage at the output terminal of the charging circuit100.

REFERENCES:
patent: 2004/0051534 (2004-03-01), Kobayashi et al.
patent: 2005/0225290 (2005-10-01), Hashimoto et al.
patent: 2006/0186894 (2006-08-01), Iwabuchi et al.
patent: 59-198361 (1984-11-01), None
patent: 2001-255342 (2001-09-01), None
patent: 2002-315212 (2002-10-01), None
patent: 2004-085208 (2004-03-01), None
patent: 2004-245743 (2004-09-01), None
patent: WO 2004/086065 (2004-10-01), None

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