Battery cell pressurization device

A battery cell pressurization device may include a housing in which battery cells are disposed in parallel, pressurizing plates alternately disposed with the battery cells and configured to heat and pressurize the battery cells in the housing, and a pressurizing driver configured to drive the pressurizing plates to pressurize the battery cells. Each pressurizing plate may include pressurizing protrusions and heating lines installed in the pressurizing protrusions on a side facing the respective battery cell.