Charger

Abstract

Abstract PURPOSE:To improve the accuracy of detection of a battery voltage and detect a charging quantity, charge completion, etc., accurately by a method wherein the voltage of a secondary battery at the time of the variable control of the reference voltage of an output current error detecting means is detected by a control means. CONSTITUTION:An output current error detecting means (optional amplifier) 17 for constant current charging and a control means 10 for the variable control of the reference voltage of the operational amplifier 17 and the detection of the voltage of a secondary battery 12 are provided in a charger for the detection of the voltage, the charging quantity, the charge completion, etc., of the secondary battery 12. The voltage of the secondary battery 12 at the time of the variable control is detected by the control means 10. That is, by switching the reference voltages of the reference voltage sources REF1 and REF2 with the control means 10, the voltage of the secondary battery 12 at the time of switching is detected.

Inventors

• 👤 Koji Umetsu
• 👤 浩二 梅津
• 👤 Masayoshi Sasaki
• 👤 真義 笹木
• 👤 Tsugio Samejima
• 👤 鮫島　次男

Bibliographic Details