Remaining battery energy indicating instrument

Details Remaining battery energy indicating instrument Remaining battery energy indicating instrument

1997-01-22

1999-10-05

Hofsass, Jeffery A.

Communications: electrical

Visual indication

Step by step positioner

340636, 324433, 320127, 320136, 320 48, G08B 500

Patent

active

059631406

ABSTRACT:
A remaining battery energy indicating instrument with a reduced integration error even if a battery is repeatedly charged and discharged without being fully discharged. A remaining battery energy indicating instrument has a detecting member for detecting a predetermined discharged time and a predetermined fully charged time of a battery for storing electric energy, an integrating member for integrating electric energy which has been charged and discharged, while regarding as an integrated value a value corresponding to an amount of electric energy stored in the battery at the predetermined discharged time and the predetermined fully charged time when the predetermined discharged time and the predetermined fully charged time are reached. A display device is provided for displaying the absolute value of a remaining amount of electric energy stored in the battery based on an output signal from said integrating member.

REFERENCES:
patent: 3680072 (1972-07-01), Charbonnier et al.
patent: 3886442 (1975-05-01), Chiku et al.
patent: 4151454 (1979-04-01), Iida
patent: 4234840 (1980-11-01), Konrad et al.
patent: 4560937 (1985-12-01), Finger
patent: 5115182 (1992-05-01), Ehmke et al.
patent: 5325041 (1994-06-01), Briggs
patent: 5477129 (1995-12-01), Myslinski
Patent Abstracts of Japan, Japan, vol. 012, No. 019 (P-657), Jan. 21, 1988 and JP 62 175680A Jan. 08.

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