Battery Charging Device and Electric Vehicle Mounting the Same

摘要

A battery charging unit is provided with a charge controlling unit (23a-d) which is designed to perform at least one of rest mode operating function which causes to rest charging for respective battery groups (13) and discharge mode operating function which causes to discharge electric power from the respective battery groups (13) in addition to charge mode operating function for the respective battery groups (13). The battery charging unit (14) repeats at least two modes in a predetermined time cycle and further performs a mutual control between the respective battery groups (13) so that at least one battery group (13) is placed in the rest mode in a predetermined sequence.