The invention relates to an electric truck, aims to solve the problem that a battery-replacing type battery box in an existing electric truck is arranged behind a cab, and provides a battery-replacing type electric truck which comprises the battery-replacing type battery box, and an electric box space used for containing the battery-replacing type battery box is arranged below a truck head driver. The electric box space is located between two frame longitudinal beams of a truck chassis, a panel capable of opening and closing a battery box inlet and outlet in the front of the electric box space is arranged on the front portion of a truck head, and guide rails longitudinally extending backwards from the front ends of the frame longitudinal beams to the rear portion of the electric box space are installed on the inner sides of the two frame longitudinal beams. Sliding support pieces capable of sliding on the guide rails are respectively arranged at the middle lower parts of the left side and the right side of the battery replacement type battery box body; and a plurality of unlocking and locking devices are arranged on the left side and the right side of the battery changing type battery box or the left side, the right side and the rear side of the battery changing type battery box. The battery replacement type battery box is arranged below the cab, battery replacement is convenient, the cargo compartment arrangement space is not occupied, the battery box is easy to fix, and the gravity center of the vehicle is lowered.

本发明涉及电动卡车，为解决现有电动卡车中换电式电池箱布置在驾驶室后方的问题，本发明构造一种换电式电动卡车，其包括换电式电池箱，在车头驾驶下方设有用于容纳换电式电池箱的电箱空间，电箱空间位于卡车底盘两车架纵梁之间，车头前部设置有能够开启与关闭电箱空间前部电池箱出入口的面板，两车架纵梁内侧安装有自车架纵梁前端向后纵向延伸至电箱空间后部的导轨，换电式电池箱箱体左右两侧的中下部分别设置有能够在导轨滑动的滑动支撑件；在换电式电池箱的左右侧或者在换电式电池箱的左右侧和后侧布置有多个开闭锁紧装置。本发明中，换电式电池箱布置在驾驶室下方，换电方便，不占用货厢布置空间，电池箱固定简单，降低车辆重心。