Method and apparatus for detection and control of thermal runawa

Details Method and apparatus for detection and control of thermal runawa Method and apparatus for detection and control of thermal runawa

1995-03-17

1996-11-12

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 48, 320 51, 324430, H01M 1044, H01M 1048, H02J 704, G01N 27416

Patent

active

055743552

ABSTRACT:
A thermal runaway detection apparatus is provided for use during charging of a battery. The thermal runaway detection apparatus includes circuitry for determining internal resistance (impedance) or conductance (admittance) of the battery under charge. Detection circuitry detects an increase in internal battery conductance or a decrease in internal battery resistance and provides an output. The output is indicative of a thermal runaway condition in the battery. The circuitry can be used to provide feedback which controls charging of the battery.

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