Method for managing back-up power source

Details Method for managing back-up power source Method for managing back-up power source

1998-12-03

2000-08-01

Riley, Shawn

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320150, 320144, 320139, H02J 700, H02J 714

Patent

active

060971762

ABSTRACT:
A method for managing a back-up power source capable of maintaining the discharge capacity of a nickel metal-hydride storage battery for a long-term at a low cost, and is suitable for the management of the back-up power source for the guidance lights, the emergency lights, the information telecommunication systems, and the like is disclosed. The present invention provides a method for managing the back-up power source which uses a nickel metal-hydride storage battery including a positive electrode mainly consisting of nickel oxide, a negative electrode mainly consisting of a hydrogen storage alloy, a separator and an alkaline electrolyte, wherein an intermittent charge is performed on the nickel-metal hydride storage battery, comprising: calculating a self-discharge quantity of the nickel-metal hydride storage battery during idle period of the intermittent charge on the basis of a temperature of the nickel-metal hydride storage battery at the idling; and controlling the charging of the nickel-metal hydride storage battery on the basis of the obtained self-discharge quantities.

REFERENCES:
patent: 5459671 (1995-10-01), Duley
patent: 5539298 (1996-07-01), Perkins et al.
patent: 5563496 (1996-10-01), McClure
patent: 5572110 (1996-11-01), Dunstan
patent: 5666039 (1997-09-01), Odaohara
patent: 5736834 (1998-04-01), Kuno
"Proceedings of the 1997 Communications Society Conference of IEICE", The Institute of Electronics, Information And Communication Engineers pp. 531 Sep. 3-6, 1997.

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