Method and device for checking battery charge

Details Method and device for checking battery charge Method and device for checking battery charge

1999-03-24

2000-10-24

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

H01M 1044, H01M 1046

Patent

active

061372633

ABSTRACT:
A method and device for determining whether a battery for a hybrid vehicle is fully charged includes: detecting the battery current, providing a unit of stored battery energy, detecting Joule heat loss and battery temperature, calculating changes in the battery Joule heat loss and battery temperature while the battery is charged by the unit of stored energy and a ratio between the Joule heat loss and temperature changes, and comparing the ratio of the Joule heat loss and temperature changes with a predetermined level.

REFERENCES:
patent: 5187425 (1993-02-01), Tanikawa
patent: 5489836 (1996-02-01), Yuen
patent: 5497068 (1996-03-01), Shiojima
patent: 5519303 (1996-05-01), Goedken et al.
patent: 5563496 (1996-10-01), McClure

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