State of charge sensing means

Details State of charge sensing means State of charge sensing means

1978-07-06

1980-05-13

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 48, 324432, 340636, 429 90, H02J 700, H01M 1048

Patent

active

042030650

ABSTRACT:
Electrolyte from a battery cell is circulated by pump, through a container which contains a hydrometer float, and back to the cell. The float has an opaque neck which interrupts light passing from a light source assembly to a light receiving assembly, and the receiving assembly controls slave means, which can be an illuminated sign, as for example a group of visible light emitting diodes, the number of which illuminated indicating the density of the electrolyte. The slave means can alternatively be a volt meter, or a battery charger, the rate of charge of which is controlled by a voltage signal.

REFERENCES:
patent: 1415385 (1922-05-01), Oswald
patent: 1988192 (1935-01-01), Drabin
patent: 2125219 (1938-07-01), Campbell
patent: 3287175 (1966-11-01), Teed
patent: 3661652 (1972-05-01), Ultenbroek
patent: 3683347 (1972-08-01), Melone

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