The invention discloses a mutual
coupling capacitance feedback type integral closed-loop magnetic
coupling wireless power supply device,
system and method, and the device comprises a transmitting end and receiving end integrated
coupling device which comprises a pair of
magnetic field coupling coils, and transmitting end and receiving end
electric field coupling grids are disposed on the sides, close to each other, of the transmitting end and receiving end
magnetic field coupling coils. The sides, away from each other, of the transmitting end
magnetic field coupling coil and the receiving end
magnetic field coupling coil are provided with transmitting end magnetic materials and receiving end magnetic materials, the sides, away from each other, of the transmitting end magnetic materials and the receiving end magnetic materials are provided with transmitting end
metal shells and receiving end
metal shells, and a mutual coupling
capacitance path is formed between the transmitting end
metal shells and the receiving end metal shells. According to the mutual coupling
capacitance feedback type overall closed-loop magnetic coupling
wireless power supply device,
system and method, an
energy transfer / feedback integrated coupling structure with a selective shielding function is provided, and the structure can effectively shield stray interference of an
electric field on the premise that penetration of an
energy transfer magnetic field is not affected, so that the reliability of the power supply is improved. And meanwhile, a
capacitive coupling feedback channel which is not interfered is provided.