Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1996-10-18
1998-02-10
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 15, 320 48, 396301, H02J 700, H01M 1046, G03B 726
Patent
active
057173087
ABSTRACT:
In electric-supply equipment of the present invention, a main battery supplies electric power to equipment such as a camera, and an auxiliary battery such as an AA battery is used as a charging power source in order to supply electric energy to the main battery in a charging circuit. Thereby, if the power source (the auxiliary battery) has been consumed, only the auxiliary battery, which is inexpensive and easy to get, is replaced. In particular, a metal lithium secondary battery is used as the main battery, so that the main battery can supply a large amount of high current to the equipment such as a camera. Furthermore, the metal lithium secondary battery spontaneously discharges only a small amount of electricity, so that the battery need not be replaced even after a long period of non-use, and the equipment can be used anytime.
REFERENCES:
patent: 4210854 (1980-07-01), Godard
patent: 5424800 (1995-06-01), Suzuki
patent: 5568038 (1996-10-01), Tatsumi
patent: 5610496 (1997-03-01), Hofbauer et al.
patent: 5617002 (1997-04-01), Sakamoto
Fujita Yoshihiro
Nishitani Yasuhiro
Fuji Photo Film Co. , Ltd.
Law Patrick B.
Wong Peter S.
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