Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1992-04-16
1993-06-01
Harvey, Jack B.
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
324426, 324435, 429 90, G01N 27416
Patent
active
052163717
ABSTRACT:
A battery pack including a casing adapted to be detachably attached to a battery-powered apparatus. A rechargeable secondary battery is housed within the casing and includes positive and negative terminals. At least a pair of power electrodes are connected to the positive and negative terminals of the secondary battery and positioned on an outer surface of the casing so as to be electrically connected to the battery-powered apparatus. A measuring circuit is provided within the casing for measuring the remaining amount of electric power in the secondary battery and generating one or more information signals related to the remaining amount of the electric power which has been measured. One or more signal electrodes are provided on the outer surface of the casing and adapted to transfer the information generated from the measuring circuit to an apparatus to be connected to the battery pack. In addition to or instead of the signal electrodes, an indicating unit may be provided for indicating information related to the remaining amount of the electric power of the secondary battery at the outer surface of the casing in accordance with the information signals generated from the measuring circuit.
REFERENCES:
patent: 4181885 (1980-01-01), Gosser et al.
patent: 4392102 (1983-07-01), Sasalski et al.
patent: 4455523 (1984-06-01), Koenck
patent: 4762429 (1988-08-01), Fujikawa
patent: 4910103 (1990-03-01), Yoshikawa et al.
Harvey Jack B.
Ricoh & Company, Ltd.
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