Frame structure for use in truck-type electric vehicle

A frame structure for use in a truck-type or pickup-type electric vehicle having a drive motor and a drive battery configured to supply electric power to the drive motor, includes: a frame including first and second side members extending in a front-rear direction of a vehicle body; first and second sub-frames respectively disposed on the first and second side members; and cross members provided between the first and second sub-frames and extending in a widthwise direction of the vehicle body. The drive battery is disposed between a first side-frame structural body including the first side member and the first sub-frame, and a second side-frame structural body including the second side member and the second sub-frame.