Electricity: battery or capacitor charging or discharging – Battery or cell discharging – With charging
Patent
1998-10-22
2000-12-12
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Battery or cell discharging
With charging
340636, 324427, H02J 700
Patent
active
061603805
ABSTRACT:
A method and apparatus of estimating a residual energy of a battery for an electric vehicle. A battery characteristic is corrected on the basis of a temperature correction factor and a deterioration correction factor which are obtained on the basis of the condition of the battery. The deterioration correction factor includes an internal resistance deterioration correction factor indicative of a deterioration ratio of a battery internal resistance and a energy deterioration correction factor indicative of a deterioration ratio of a battery energy. The residual capacity is calculated on the basis of the corrected battery characteristic, a discharge current and a terminal voltage of the battery. Therefore, a residual energy meter accurately displays a residual energy of the battery.
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patent: 5598087 (1997-01-01), Hara
patent: 5612608 (1997-03-01), Ishiguro et al.
patent: 5614804 (1997-03-01), Kayano et al.
patent: 5650712 (1997-07-01), Kawai et al.
U.S.D.O.E., USABC Electric Vehicle Battery test Procedures Manual Revision 2, Jan. 1996.
Origuchi Masato
Sodeno Tsuyoshi
Tsuji Tadashi
Nissan Motor Co,. Ltd.
Toatley Jr. Gregory J
Wong Peter S.
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