This application relates to the field of battery technologies, and discloses a three-point-support battery compartment for battery electric mining vehicles which includes two connection beams, where a battery compartment body is mounted at both ends of the two connection beams, side plates are symmetrically mounted on two side walls of the battery compartment body, and a protective plate is fixed outside the battery compartment body. Battery box fastening brackets are mounted at equal spacings inside the battery compartment body, and the battery box fastening bracket includes two first connection plates. Connection steel angles are symmetrically connected to two sides of the bottom of the two first connection plates, and a second connection plate is connected to the bottom of the first connection plates. The battery compartment of this application can be used for mounting three battery boxes at each side and provide effective protection for the battery boxes, preventing the battery boxes from collision and damage. In addition, the battery boxes can be mounted in high orderliness and stability, making it easy for local replacement later, and meeting requirements of the ongoing development of technology.