The utility model relates to a novel back-up power supply device applied to mine emergency refuge facilities, which belongs to the field of mine back-up power supply technologies. According to the technical problem to be solved, the novel back-up power supply device applied to mine emergency refuge facilities is provided, wherein the novel back-up power supply device applied to mine emergency refuge facilities is provided with the performance of safe explosion protection and with abundant back-up power supply. According to the adopted technical scheme, the novel back-up power supply device applied to mine emergency refuge facilities comprises at least two mine flameproof and intrinsically safe storage battery power supply boxes and a mine flameproof and intrinsically safe power supply control device; in the at least two mine flameproof and intrinsically safe storage battery power supply boxes, the mine flameproof and intrinsically safe storage battery power supply box which is connected with the mine flameproof and intrinsically safe power supply control device is a master machine, and the rest of the mine flameproof and intrinsically safe storage battery power supply boxes are slave machines. The power supply input end and the communication end of the mine flameproof and intrinsically safe power supply control device are respectively connected with the power supply output end and the communication end of the master machine. The power output ends of the slave machines are connected with the power supply input end of the master machine. The novel back-up power supply device applied to mine emergency refuge facilities can be applied to an underground mine provided with an emergency shelter.