Monitoring apparatus and method for battery power supply

Details Monitoring apparatus and method for battery power supply Monitoring apparatus and method for battery power supply

1980-10-14

1983-06-28

Tokar, Michael J.

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

429 93, G01N 2746

Patent

active

043908411

ABSTRACT:
A monitoring apparatus and method are disclosed for monitoring and/or indicating energy that a battery power source has then remaining and/or can deliver for utilization purposes as, for example, to an electric vehicle. A battery mathematical model forms the basis for monitoring with a capacity prediction determined from measurement of the discharge current rate and stored battery parameters. The predicted capacity is used to provide a state-of-charge indication. Self-calibration over the life of the battery power supply is enacted through use of a feedback voltage based upon the difference between predicted and measured voltages to correct the battery mathematical model. Through use of a microprocessor with central information storage of temperature, current and voltage, system behavior is monitored, and system flexibility is enhanced.

REFERENCES:
patent: 3532968 (1970-10-01), Overlie
patent: 3971980 (1976-07-01), Jungfer
patent: 4289836 (1981-09-01), Lemelson
patent: 4295097 (1981-10-01), Thompson

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