System and method for increasing the available energy in non-rec

Details System and method for increasing the available energy in non-rec System and method for increasing the available energy in non-rec

1996-02-08

1998-08-11

Tso, Edward

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

Having variable number of cells or batteries in series

320126, 320135, H01M 1046

Patent

active

057931879

ABSTRACT:
A system and method for increasing the available energy and system runtime of battery powered electric devices which use non-rechargeable cells as an energy source. The present invention employs techniques for using energy from both rechargeable and non-rechargeable batteries in a manner which discharges each of the different cells within their optimal discharge rate. In particular, the non-rechargeable batteries are used for a low rate of system discharge and rechargeable cells supplement the non-rechargeable batteries for a higher system loads. In a preferred embodiment of the present invention, when the system load is at a very low level, the rechargeable battery is recharged using power from the non-rechargeable battery. The result of the techniques of the present invention is the lowering of discharge rate and hence increasing the capacity of the non-rechargeable cell.

REFERENCES:
patent: 2818543 (1957-12-01), Dodge
patent: 4210854 (1980-07-01), Godard
patent: 4667142 (1987-05-01), Butler
patent: 5204610 (1993-04-01), Pierson et al.
patent: 5387858 (1995-02-01), Bender et al.
patent: 5568038 (1996-10-01), Tatsumi

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