Patent ID: 8022670
Filing Date: 2011-09-20
Classification: H02J

Abstract:
1. A method for charging a battery module, applied to a battery module including a plurality of parallel-connected battery core sets connected in series, comprising: a. adjusting a charging current applied to the battery module to charge the battery module with a constant current; b. determining whether a voltage of any one of the parallel-connected battery core sets of the battery module reaches a nominal voltage; c. if the voltage of the any one of the parallel-connected battery core sets reaches the nominal voltage, adjusting the charging current applied to the battery module to charge all of the parallel-connected battery core sets, wherein the charging currents of the parallel-connected battery core sets are equal to each other; d. determining whether a voltage of any remaining one of the parallel-connected battery core sets reaches the nominal voltage; and e. if the voltage of the any remaining one of the parallel-connected battery core sets reaches the nominal voltage, proceeding to charge all of the parallel-connected battery core sets with another adjusted current until another parallel-connected battery core set reaches the nominal voltage.