Robot autonomous charging device and robot

The utility model provides a robot autonomous charging device and a robot, and the robot autonomous charging device comprises a charging pile and a robot charging module. The charging pile is a box body with the cross section of a first inverted trapezoidal structure. The charging pile is fixedly connected with the power supply device through the upper bottom face of the first inverted trapezoidal structure. A charging sliding groove is formed in the lower bottom face of the charging pile and is of a trapezoidal inner groove structure with an upward opening. The robot charging module is fixedly installed at the bottom of the robot, the cross section of the robot charging module is a box body of a second inverted trapezoidal structure, and the second inverted trapezoidal structure is matched with the charging sliding groove; a first charging circuit is mounted in the charging pile; and a second charging circuit is installed in the robot charging module, and the position of the second charging circuit is matche