Robot automatic charging system and control method therefor

The invention discloses a robot automatic charging system, and the system comprises a robot and a charging station. The system is characterized in that the charging station comprises a charging electric controller, a voltage converter, and an infrared transmitter; the robot is provided with a laser range finder, a supersonic wave sensor, an infrared sensor, a rechargeable battery, and a charging electrode. The autonomous charging process comprises three steps: remote searching and positioning, autonomous navigation and obstacle-avoiding path planning, and short-distance searching butt joint, thereby improving the success rate and facilitating the long-time continuous work of a household robot under the condition of no intervention.