VISUAL POSITIONING SYSTEM, BATTERY SWAPPING DEVICE, AND BATTERY SWAPPING CONTROL METHOD

A visual positioning system, comprising a first visual sensor ( 501 ), a second visual sensor ( 502 ), and a position obtaining unit ( 503 ), wherein the first visual sensor ( 501 ) is used for obtaining a first image (G 11 ) of a first position (A) of a target apparatus ( 7 ), a second visual sensor ( 502 ) is used for obtaining a second image of a second position (B) of the target apparatus ( 7 ), and the position obtaining unit ( 503 ) is used for obtaining position information of the target apparatus ( 7 ) according to the first image (G 11 ) and the second image. Further disclosed are a battery swapping device and a battery swapping control method. Relatively high positioning accuracy is obtained in a visual manner, and accurate positioning between the battery swapping device and a vehicle for battery swap is implemented.