Electricity: battery or capacitor charging or discharging – Battery or cell discharging – Regulated discharging
Patent
1997-08-07
1999-02-09
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Battery or cell discharging
Regulated discharging
320DIG21, 324435, 429 93, H02J 700, G01N 27416, H01M 1048
Patent
active
058699520
ABSTRACT:
Apparatus indicates a charge on a battery that has a predetermined operating range. The apparatus includes a thermochromatic material for displaying the charge level of the battery, and a resistive heating device, which is in thermal contact with the thermochromatic material, for generating heat for activating the thermochromatic material. A controlling device which is connected to the resistive heating device is also included for controlling the heat generated by the heating device so that the thermochromatic material has sufficient resolution to indicate the charge on the battery over a substantial portion of the thermochromatic material.
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Fisher Curtis William
Trygstad Einar
Wahl Clipper Corporation
Wong Peter S.
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