Magnetic type charging interface structure and cleaning device for surface immersed in liquid

The invention provides a magnetic type charging interface structure and a cleaning device for a surface immersed in liquid, and the structure comprises a first magnetic connection assembly which is provided with a charging needle group and a detection needle group; the second magnetic connection assembly comprises a detection control device, a charging seat group corresponding to the charging needle group, a detection seat group corresponding to the detection needle group and a switch assembly, the magnetism of the first magnetic connection assembly is opposite to that of the second magnetic connection assembly, and the detection control device is configured as follows: if the detection needle group is in contact with the detection seat group, the switch assembly is switched on; the charging loop is conducted; if the detection needle group and the detection seat group are disconnected, the switch assembly is disconnected, the charging loop is disconnected, the contact time difference of the charging needles a