Abnormality determination device of power supply and...

Details Abnormality determination device of power supply and... Abnormality determination device of power supply and...

2007-02-06

2010-10-26

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C320S164000, C324S426000

Reexamination Certificate

active

07821234

ABSTRACT:
A power supply having a battery (2) that supplies electric power to an electric load (6), a current sensor (4) that detects the current of the battery (2), and a voltage sensor (5) that detects the voltage of the battery (2) includes abnormality determination means for determining that an open failure has occurred in the battery (2) when the voltage detected by the voltage sensor (5) is larger than a first predetermined change amount and the current detected by the current sensor (4) is smaller than a second predetermined change amount, and determining, if an open failure is not found in the battery (2), that an intermediate fixed failure has occurred in the current sensor (4) when the internal resistance of the battery (2) is greater than or equal to a predetermined value.

REFERENCES:
patent: 6992487 (2006-01-01), Steinke
patent: 2004/0239333 (2004-12-01), Kikuchi
patent: 07-184325 (1995-07-01), None
patent: 10-253682 (1998-09-01), None
International Search Report, 2007.

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