Chemistry: electrical current producing apparatus – product – and – With measuring – testing – or indicating means – For charge or liquid level
Patent
1979-12-31
1981-08-04
LeFevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
With measuring, testing, or indicating means
For charge or liquid level
429178, H01M 1048
Patent
active
042822920
ABSTRACT:
An apparatus and method for the sequential testing of series connected lead-acid storage batteries for short circuits between plates of opposite polarity within a cell and for electrical continuity between cells of said battery is disclosed. The apparatus comprises power and control circuitry working in conjunction with a terminal block containing a plurality of pins which are connected to the intercell lugs on the positive and negative straps which when welded together form the intercell connections within the battery. Within this block, the pins are partially wired together so that if there is complete continuity of the intercell welds a continuous electrical circuit is formed. Midway in the electrical wiring is a blocking diode which acts to permit the passage of a DC test current in only one direction. If a positive polarity voltage is impressed on the cathode side of the diode, current will only flow if there is a short circuit between plates of opposite polarity within the cell. If a positive polarity voltage is impressed on the anode side of the diode, current will only flow if there is continuity through the intercell welds.
REFERENCES:
patent: 3695939 (1972-10-01), Buttke et al.
patent: 3972739 (1976-08-01), Hammel
General Battery Corporation
LeFevour Charles F.
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