Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1994-11-02
1996-10-01
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 43, 324427, H02J 704, H02J 716
Patent
active
055613624
ABSTRACT:
A remaining capacity meter is provided for an electric vehicle battery. This meter is suited for use in the detection of a remaining capacity of the electric vehicle battery. The meter includes a full charge detection device for detecting whether the battery has been brought into a fully-charged state, a remaining capacity setting device for setting, as a full-charge-time capacity, the remaining capacity of the battery at the time of detection of the fully-charged state by the full charge detection device, a discharge/charge-based correction device for correcting the remaining capacity, which has been set by the remaining capacity setting device, while integrating, with respect to time, a current discharged from or charged into the battery, and a deterioration-based correction device for correcting the fully-charged capacity, which has been set by the remaining capacity setting device, by a deterioration-based correction quantity corresponding to the number of chargings and battery temperatures at the time of the respective chargings. A method for the detection of the remaining capacity of such an electric vehicle battery is also described.
REFERENCES:
patent: 4390841 (1983-06-01), Martin et al.
patent: 5107191 (1992-04-01), Lowndes et al.
Furukawa Nobuya
Kato Masaaki
Kawamura Nobuyuki
Koga Hisamitsu
Kumagai Naotake
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
Toatley , Jr. Gregory J.
Wong Peter S.
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