Battery pack and method of controlling the same

摘要

One embodiment of the present invention relates to a battery pack and a method of controlling the battery pack, and more particularly, to a battery pack receiving a charging current from a power generation module and a method of controlling the battery pack. In the battery pack, when an output voltage of the power generation module is higher than a rated voltage of a main battery and a rated voltage of a sub-battery is higher than the rated voltage of the main battery, an energy loss may be reduced.

主权项

1. A battery pack, comprising:
a main battery storing electric energy by receiving a charging current from a power generator; a sub-battery storing electric energy by receiving the charging current from the power generator; a battery controller controlling the charging current from the power generator to be delivered to the sub-battery, instead of the main battery, when a voltage of the main battery is equal to or greater than a first reference voltage, with an output voltage of the power generator being higher than a rated voltage of the main battery, and a rated voltage of the sub-battery being higher than the rated voltage of the main battery; and a third switch electrically connected between end terminals of the sub-battery, wherein, when a voltage of the sub-battery is less than a second reference voltage, the battery controller turns off the third switch, and when the voltage of the sub-battery is equal to or greater than the second reference voltage, the battery controller turns on the third switch, and wherein the second reference voltage corresponds to the voltage of the sub-battery when the sub-battery is fully charged.