Battery charging control method employing pulsed charging and discharging operation for heating low-temperature battery

摘要

A battery charging control method is disclosed, which can reduce the charging time a low-temperature battery without providing an additional heating system. The method includes executing a first pulsed charging and discharging operation when the battery temperature T is lower than a first predetermined temperature (e.g., 0 C.), wherein the amount of charging is equal to the amount of discharging; and switching from the first pulsed charging and discharging operation to a second pulsed charging and discharging operation when the battery temperature exceeds the first predetermined temperature, wherein in the second pulsed charging and discharging operation, the amount of discharging is less than the amount of charging. Therefore, it is possible to accomplish not only heating but also charging. When the battery temperature T exceeds a second predetermined temperature (e.g., 10 C.), a normal charging operation is performed.