FULL CHARGE DETECTION CIRCUIT OF BATTERY

摘要

ABSTRACTThis invention relates to a full charge detection circuit of abattery which can electrically detect the temperature rise occurring at fullcharge of the battery by using a temperature detection element, and raisingan alarm at the full charge or cutting off the power source. The deviceenables more accurate detection of full charge of the battery than thatobtainable with previously known methods where pre-setting of the chargingtime could not be made as accurately, because the temperature or voltageat the time of full charge fluctuated depending upon the change in ambienttemperature or in the discharge quantity of the battery. The presentinvention enables accurate detection of the full charge time, by detectingthe temperature difference arising from the temperature rise at the timeof full charge, thus preventing either excessive or deficient charging fromtaking place.