Wireless car charging system and method based on focusing of transmitter coil array
A transmitting coil and wireless charging technology, which is applied in electric vehicle charging technology, charging stations, electric vehicles, etc., can solve problems such as the reduction of mutual inductance coefficient, affecting the efficiency of wireless charging system, energy dissipation, etc., to improve the mutual inductance coefficient and solve the problem of charging Efficiency reduction, reduced energy dissipation effect
Inactive Publication Date: 2020-02-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
In practical applications, the transmitting coil laid on the ground usually has a fixed shape and size. When the position of the car cannot be strictly aligned with the center of the transmitting coil and the receiving coil each time, a part of the magnetic field energy of the transmitting coil will not be induced by the receiving coil. Cause energy dissipation, thereby reducing the mutual inductance coefficient between the two, affecting the efficiency of the wireless charging system
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[0021] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0022] The present invention designs a car wireless charging system based on the focus of the transmitting coil array, such as figure 1 As shown, it includes a rectifier, a resonant inverter, a resonant conditioner, a transmitting coil array, an array controller, a main controller, a receiving coil, a high-frequency rectifier and a system efficiency calculation device. The input end of the rectifier is connected to the power grid, the output end of the rectifier is connected to the input end of the resonant inverter, the first output end of the resonant inverter is connected to the input end of the resonant regulator through the first inductor L1, and the output end of the resonant regulator is passed through The first capacitor C1 is connected to the second output end of the resonant inverter, the output end of the resonant conditioner is ...
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The present invention discloses a wireless car charging system and method based on focusing of a transmitter coil array. The system includes a rectifier, a resonant inverter, a resonant conditioner, atransmitter coil array, an array controller, a main controller, a receiver coil, a high frequency rectifier, and a system efficiency calculation device. In the present invention, the transmitter coilarray with the controllable conduction state and angle is used, a specified area in the coil array is flexibly selected according to the alignment position of the receiver coil, and the angle of thecoil is adjusted to focus the magnetic field energy of the transmitter coil, reduce the energy dissipation, improve a mutual inductance coefficient between the transmitter coil and the receiver coil,and adjust the resonance frequency of the system in real time to improve the charging efficiency of the system. By using the system and the method, the problem that the charging efficiency of the system caused by different parking positions of cars and different specifications of the receiver coils is effectively solved.
Description
technical field [0001] The invention belongs to the technical field of automobile charging, and in particular relates to an automobile wireless charging system and method. Background technique [0002] In recent years, under the trend of rapid development of electric vehicles, wireless charging (WPT) technology for electric vehicles has attracted more and more attention due to its advantages of safety and energy saving, and has become one of the hot spots in the field of electric vehicles. power supply occasions. Wireless charging is to convert electrical energy into high-frequency magnetic field energy, and the converted electrical energy through the coupling of the magnetic field transmits energy through the air gap. In practical applications, the transmitting coil laid on the ground usually has a fixed shape and size. When the position of the car cannot be strictly aligned with the center of the transmitting coil and the receiving coil each time, a part of the magnetic f...
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IPC IPC(8): B60L53/12H02J50/12H02J50/90H02J7/02
CPCB60L53/12H02J50/12H02J50/90Y02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 胡勤丰张迁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS