The invention discloses a magnetic coupling mechanism and compensation circuit design for wireless charging of an electric vehicle, the magnetic coupling mechanism comprises a transmitting module, a relay module and a receiving module, the transmitting module is arranged at the ground end, the receiving module is arranged at the bottom of a vehicle body, and the transmitting module and the receiving module are respectively composed of a metal shielding plate, an insulating plate, an inductance coil and a magnetic core; the relay module is arranged between the transmitting module and the receiving module and consists of an inductance coil and a magnetic core; two separated coil windings of the transmitting module, the relay module and the receiving module are spirally wound on two sides of a magnetic core; the invention further comprises a compensation topology circuit structure composed of the active relays. The transmitting side adopts an LCC compensation circuit, a relay coil compensation circuit adopts series compensation, in order to improve the system performance, a relay coil is energized, and a power supply of the relay coil is the same as an inverter power supply of a transmitting coil; and the receiving side adopts LCC compensation. According to the invention, the transmission power of the system is improved, the anti-offset capability of the system is enhanced, and the transmission distance of wireless electric energy is increased.
本发明公开了一种用于电动汽车无线充电的磁耦合机构及补偿电路设计,其中磁耦合机构包括发射模块、中继模块、接收模块,发射模块置于地面端,接收模块置于车体底部,发射模块和接收模块均由金属屏蔽板、绝缘板、电感线圈、磁芯组成;中继模块置于发射模块与接收模块之间,由电感线圈和磁芯组成;发射模块中继模块、接收模块的两个分离线圈绕组螺旋缠绕在磁芯两侧;本发明还包括一种由有源中继组成的补偿拓扑电路结构。发射侧采用LCC补偿电路,中继线圈补偿电路采用串联补偿,为了提高系统性能,对中继线圈赋能,中继线圈的电源与发射线圈的逆变电源相同;接收侧采用LCC补偿。本发明不仅提高了系统的传输功率,而且增强了系统的抗偏移能力,同时增大了无线电能的传输距离。
Magnetic coupling mechanism and compensating circuit design for wireless charging of electric vehicle
一种用于电动汽车无线充电的磁耦合机构及补偿电路设计
11.03.2022
Patent
Elektronische Ressource
Chinesisch
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