BATTERY DEVICE HAVING THERMAL PROTECTION MECHANISM

The disclosure provides a battery device comprising a plurality of battery cells and at least one heat dissipation container. The heat dissipation container includes a frame and two thin films. The frame includes a perforation portion. The thin films are connected to the frame, and cover the perforation portion of the frame to form an enclosed space between the thin films and the frame. A liquid of water or aqueous solution is placed in the enclosed space. A bottom of each of the battery cells is adjacent to the corresponding thin film of the heat dissipation container. When the temperature of one of the battery cells is too high, the thin film of the heat dissipation container will damage to generate a broken hole. Then, the liquid will spray out of the heat dissipation container, and contact the battery cell to reduce the temperature of the battery cell.