CELL BALANCING MOTHOD OF LI-POLYMER BATTERY USING THE SAME PWM CONTROL METHOD

摘要

PURPOSE: A cell balancing method of Li-polymer battery using a PWM control method is provided to improve the efficiency of cell balancing by minutely controlling the current consumed by resistance caused by cell voltage deviation and to reduce cell balancing time. CONSTITUTION: A cell balancing method of Li-polymer battery using a PWM control method includes: (S100) producing an average voltage of every cell voltage constituting a battery module; (S200) producing a voltage deviation by comparing the calculated average cell voltage and the feedback cell voltage of a control target cell; and (S300) minutely controlling the current consumed to resistance by PWM-controlling the calculated cell voltage deviation.