Apparatus and method for bucking voltage of battery pack

Details Apparatus and method for bucking voltage of battery pack Apparatus and method for bucking voltage of battery pack

2006-01-17

2010-11-16

Vu, Bao Q (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Regulated discharging

C320S129000, C320S130000, C320S131000

Reexamination Certificate

active

07834589

ABSTRACT:
An apparatus and method for discharging a voltage in a battery pack. The apparatus includes a discharge resistance connected to a discharge target battery of plural batteries in the battery pack and discharging a voltage of the discharge target battery, a switching section for connecting the discharge target battery and the discharge resistance, a voltage measuring section for measuring a voltage of the discharge target battery, and a control section for controlling the switching section depending on the measured voltage value of the battery. The method includes measuring a voltage of the discharge target battery, calculating a PWM duty rate of a switching section connecting the discharge target battery and a discharge resistance using the measured voltage value and a value of the discharge resistance, and controlling the switching section based on the duty rate to maintain an energy consumed in the discharge resistance to be constant.

REFERENCES:
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patent: 5708351 (1998-01-01), Takamoro
patent: 2003/0169189 (2003-09-01), Brett et al.
patent: 03235693.5 (2004-04-01), None
patent: 2259814 (1993-03-01), None
patent: 09-063652 (1997-03-01), None
Journal of Jiangnan College, vol. 16, No. 2, pp. 60-64, Jun. 2001, “A New Style Intelligent System for Inspection of Accumulator”.

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