Research on autonomous fast and safe charging method of coal mine robot

In order to meet the demand of the mine robot powered by battery for self fast and safe charging in the mine, a charging method of mutual conversion between electric energy and mechanical energy in the mine is proposed. This paper designs an autonomous and fast charging system for coal mine robot, which is composed of robot, walking track, guiding mechanism and charging station. The robot drives to the charging station independently along the walking track under the guidance of the guiding mechanism. The accurate and reliable docking between the robot and the charging station is ensured by the rotary encoder and laser rangefinder. The safety of charging docking is ensured by the flame retardant and antistatic modified nylon butt joint male and female. After successful docking, the motor of the charging station drives the generator of the robot to charge the battery of the robot with high power and fast speed. After successful docking, the motor of the charging station drives the generator of the robot to charge the battery of the robot with high power and fast speed. The test results show that the stable output power of the generator is more than 800 W when the rated power of the motor is 2.2 kW, which provides a new method for autonomous fast and safe charging of coal mine robot.