BATTERY PACK

The present invention relates to a battery pack, and in particular, the battery pack according to the present invention relates to a battery pack including a battery module, wherein the battery module includes: a cell stack in which a plurality of battery cells are stacked; a flexible circuit board configured to transmit information of the battery cell; a module housing configured to accommodate the cell stack and the flexible circuit board; a wireless transmission battery management system (BMS) configured to receive the information of the battery cell from the flexible circuit board; and a BMS accommodation part provided outside the module housing to accommodate the wireless transmission BMS.