System and Method for charging Battery

By the present invention increases the temperature of the battery in order to solve the problem of being lack of the amount of charge in the present invention relates to battery charging systems and methods, particularly to a battery used in electric cars and hybrid cars low temperature or a longer charging time provides a battery charging system and method that can shorten the charging time of the battery to be fully charged, a transition of the battery. Battery charging system in accordance with one embodiment of the invention the power supplied to the electric energy required for the motor assist when the vehicle is accelerated, and the high-voltage battery, supplied from the outside to store the electrical energy generated by the deceleration or engine room output motor recovery in the event of battery control for transmitting and receiving receive AC power from the supply, using a slow charger and the CAN communication for supplying electric power for charging the high voltage battery for charging and discharging the information of the high-voltage battery to the power supply via the slow charger including the system.