Chemistry: electrical current producing apparatus – product – and – With measuring – testing – or indicating means – For charge or liquid level
Patent
1988-12-09
1990-09-18
Kalafut, Stephen J.
Chemistry: electrical current producing apparatus, product, and
With measuring, testing, or indicating means
For charge or liquid level
429 93, 73304R, H01M 1048
Patent
active
049578286
ABSTRACT:
An emergency battery monitor is adapted for use with at least one storage battery. The battery has first and second output terminals across which an output voltage is produced, the battery, when in normal operation, exhibiting an output voltage falling within a nominal value range having predetermined maximum and minimum values. The battery has at least one cell which contains a liquid electrolyte. The electrolyte, when the battery is in normal operation, has a predetermined minimum level in the cell. The monitor includes a member associated with the cell, which is electrically conductive when the level of the electrolyte is at least equal to the minimum level and is electrically non-conductive when the level of the electrolyte falls below the minimum level. Integrated circuits coupled to the output terminals and the member produce a first signal designating normal battery operation when the member is conductive and the value of the output voltage falls within the nominal value range. The circuits produce a second signal designating abnormal battery operation when the value of the output signal falls below the minimum value, and/or the member is non-conductive, and produces a third signal designating abnormal battery operation when the value of the output signal exceeds the maximum value.
REFERENCES:
patent: 4371790 (1983-02-01), Manning et al.
Jay Theodore
Kalafut Stephen J.
SSMC Inc.
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