Low-temperature-resistant sealed lithium ion battery pack

The utility model relates to a low-temperature-resistant sealed lithium ion battery pack which comprises an inner shell and an outer shell, threads are fixed on the upper portion of the inner side of the inner shell, the threads are connected with a top cover, a rubber ring is fixed on the top of the inner shell and located on the lower side of the threads, battery bins are fixed on the front side, the rear side, the left side and the right side inside the inner shell respectively, and metal electrodes are fixed at the bottoms of the battery bins. Electric heating pieces are fixed to the front side, the rear side, the left side and the right side of the exterior of the inner shell respectively, semiconductor chilling plates are fixed to the other sides, opposite to the inner shell, of the electric heating pieces, a control room is fixed to the middle of the inner shell, a temperature sensing piece is fixed into the control room, and an outer shell is fixed to the other sides, opposite to the electric heating