A battery power supply device is provided. The battery power supply device includes: an input unit that receives external power; a battery power unit that is connected to the input unit to charge a battery with the external power; a current detection unit ...

Disclosed is a battery pack including: a plurality of cell modules including a plurality of battery cells; and a battery management system for transmitting a control signal on charging to at least one of the plurality of cell modules based on state informa...

The present invention discloses a battery pack which can be used for an electric vehicle, an Uninterrupted Power Supply (UPS), and a power supply for a smart grid and which can be easily manufactured and repaired and which is capable of improving productiv...