Battery analyzer
First Claim
1. Apparatus for testing a battery having a plurality of cells, comprising:
- a load bank for interconnection across the battery and for draining current therefrom;
monitor means connected to the battery for measuring the voltage of each of the plurality of cells of the battery and for measuring said current drained by said load bank;
control means interconnected between said load bank and monitor means for regulating said load bank; and
wherein said monitor means comprises a multiplexer connected to each of the cells of the battery and mutually exclusively accessing each of such cells for receiving a cell voltage therefrom.
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Accused Products
Abstract
A battery analyzer for testing industrial batteries under a constant current load. The analyzer includes a load bank consisting of a plurality of resistors in selective parallel interconnection. The load bank is placed across the battery terminals. Sensors are connected to each of the cells of the battery, as well as the battery terminals, and a multiplexer scans each of the cells and the battery terminals to monitor load current, battery voltage, and the cell voltage of each of the cells. The load bank is continually adjusted to maintain a constant current. The principal control element of the battery analyzer is a microprocessor chip which interrelates with a keyboard for receiving data from an operator. A printer, controlled by the microprocessor, presents a permanent record of the battery analysis, while a display unit, under program control, directs an operator in the use of the analyzer.
149 Citations
14 Claims
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1. Apparatus for testing a battery having a plurality of cells, comprising:
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a load bank for interconnection across the battery and for draining current therefrom; monitor means connected to the battery for measuring the voltage of each of the plurality of cells of the battery and for measuring said current drained by said load bank; control means interconnected between said load bank and monitor means for regulating said load bank; and wherein said monitor means comprises a multiplexer connected to each of the cells of the battery and mutually exclusively accessing each of such cells for receiving a cell voltage therefrom. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A battery analyzer for testing a multicell battery under load, comprising:
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a load bank for connection across the battery, said load bank comprising a plurality of resistors in selective interconnection with each other; a sensor connected to terminals of the battery and across each of the cells thereof; a multiplexer connected to said sensor, said multiplexer mutually exclusively accessing the cells and terminals of the battery and receiving therefrom signals corresponding to cell voltage, battery voltage, and the current passing through said load bank; and control means interconnected with said load bank, sensor, and multiplexer, for maintaining said current at a constant level. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification