State of charge sensing means

Details State of charge sensing means State of charge sensing means

G - Physics

01

N

320/12, 73/40

G01N 9/08 (2006.01) G01N 9/18 (2006.01) H01M 10/48 (2006.01)

Patent

CA 1097516

ABSTRACT OF THE DISCLOSURE Electrolyte from a battery cell is circulated by a 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.

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