Decoupling coil for dual-channel wireless power transmission of rotary equipment

The invention belongs to the technical field of wireless electric energy transmission, and particularly relates to a decoupling coil for double-channel wireless electric energy transmission of rotary equipment, which adopts a transmitting coil and a pickup coil with the same winding mode. Each of the transmitting coil and the pickup coil is composed of a first sub-coil group and a second sub-coil group; the first sub-coil group comprises two terminal coils and a middle sub-coil positioned between the two terminal coils, and the two terminal coils are equal in winding turns and winding directions; the winding direction of the middle sub-coil is opposite to that of the two terminal coils; and the number of winding turns of the middle sub-coil is twice of that of any terminal coil. Therefore, the magnetic fields generated by the three sub-coils forming the first sub-coil group are mutually counteracted, so that a field-free area is formed. And the other group of energy transmission coils with the same structure