Cross solenoid magnetic coupling mechanism with high offset performance

Abstract

The invention discloses a cross solenoid magnetic coupling mechanism with the high offset performance, and relates to the field of wireless power transmission, the cross solenoid magnetic coupling mechanism comprises a transmitting structure and a receiving structure which are oppositely arranged, the receiving structure comprises a receiving magnetic conductive sheet and two receiving coils wound in the middle of the receiving magnetic conductive sheet in a cross orthogonal mode; the short side and the long side of a transmitting magnetic conductive sheet in the transmitting structure are not smaller than the side length of a receiving magnetic conductive sheet, a first transmitting coil is wound in the middle of the transmitting magnetic conductive sheet in the long side direction, and a second transmitting coil and a third transmitting coil are wound at the two ends of the transmitting magnetic conductive sheet in the short side direction respectively. The fourth transmitting coil is wound in middle of the transmitting magnetic conductive sheet along the short edge direction. The cross solenoid magnetic coupling mechanism has a wider constant mutual inductance area, can provide a larger and more stable working area for a receiving structure, has high offset performance, and can be used for occasions with higher requirements on offset resistance performance.

Description

technical field [0001] The invention relates to the field of wireless power transmission, in particular to a cross solenoid magnetic coupling mechanism with high offset performance. Background technique [0002] In recent years, wireless power transmission technology has developed rapidly due to its advantages of safety, environmental protection and high reliability, and has gradually entered various industries. At present, wireless power transmission technology has been applied in the field of electric vehicles, consumer portable electronic products, medical implant equipment, etc., and products using wireless power transmission technology have shown a "blowout" development. [0003] However, compared with the traditional wired charging technology, the wireless power transmission technology has a major disadvantage, that is, poor spatial freedom. When the relative positions of the magnetic coupling mechanisms in the wireless power transfer system deviate, the transmission ...

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Problems solved by technology

However, limited by the symmetry of the magnetic coupling structure mentioned in the document, when there is an offset between the transceiver coils, the coupling between the transceiver coils will decrease rapidly, which will affect the normal operation of the system. Therefore, the actual resistance between the transceiver coils Offset capability is still not ideal

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