PROGRAMABLE CONSTANT CURRENT PULSE (PWM) CHARGING APPARATUS AND METHOD

摘要

Disclosed is a constant current pulse (PWM) charging device capable of programmably controlling a current value. A constant current supply unit for charging a battery using a constant current pulse (PWM) supply power; a control unit that adjusts a constant current value according to the discharge state of the battery and generates a constant current pulse (PWM); A low-pass filter that converts the PWM signal generated from the control unit into a DC voltage level by wjdur filtering, supplies it to the positive (+) terminal of the comparator of the constant current supply unit, and uses it as a reference voltage to control the current value of the constant current and implement a constant current pulse The optimal method for rapid charging with a large amount of current is the constant current charging method in which the charging current value can be arbitrarily adjusted. If the current duration is more than 200 ms, it will cause polarization by overcurrent, and If the duration is less than 100ms, the charging current is not limited, and the electron movement speed increases, making it optimal for rapid charging. Constant current pulse charging with adjustable charging current value is the best fast charging method.