Battery control and fault detection method

Details Battery control and fault detection method Battery control and fault detection method

1984-07-11

1986-12-30

Krass, Errol A.

Boots, shoes, and leggings

320 39, 320 43, 320 48, 324434, 340636, 364483, G06F 1520, G01N 2746

Patent

active

046334181

ABSTRACT:
This is a method for control, fault detection, fault isolation, and state-of-health monitoring of batteries and battery arrays. The method consists of measuring all of the battery, cell, or cell group voltages, using statistics to determine a means voltage and a standard deviation voltage, then comparing all of the measured voltages to the mean voltage. If the measured voltage deviates from the mean voltage by an arbitrary amount (number of standard deviations) corrective action can be implemented or an alarm signal given. The measurements need to be made rapidly enough to eliminate battery or cell voltage changes due to state of charge or temperature changes and, in most cases, require a computerized data collection/reduction system. Absolute high and/or low voltage limits can be included to prevent catastrophic events. The concept can be expanded to include similar temperature, pressure and/or battery current measurements in an array.

REFERENCES:
patent: 3863060 (1975-01-01), Rode et al.
patent: 3872457 (1975-03-01), Ray et al.
patent: 4198597 (1980-04-01), Sawyer
patent: 4217645 (1980-08-01), Barry et al.
patent: 4316185 (1982-02-01), Watrous et al.
patent: 4388618 (1983-06-01), Finger
patent: 4484140 (1984-11-01), Dieu
patent: 4562548 (1985-12-01), Andersen et al.
patent: 4564798 (1986-01-01), Young

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