Electric car wireless charging device with multiple parallel connection primary side windings

A technology of wireless charging and electric vehicles, applied in the direction of electric vehicle charging technology, electric vehicles, battery circuit devices, etc., can solve the problems of complex and cumbersome devices, and achieve the effect of improving stability and efficiency

Inactive Publication Date: 2017-08-29
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to solve the complex and cumbersome devices in the prior

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  • Electric car wireless charging device with multiple parallel connection primary side windings
  • Electric car wireless charging device with multiple parallel connection primary side windings

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[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them.

[0019] refer to figure 1 , a wireless charging device for electric vehicles with multiple primary windings connected in parallel, including an inverter (1), a ground system induction coil (2), an on-load converter (3), and a secondary winding of an automobile chassis (4) , load (5), load detection device (6), controller, signal transmitting and receiving equipment. The input is a power frequency 220V AC power supply, and the load is an electric vehicle battery. A full-bridge uncontrolled rectification and filtering circuit is adopted, a voltage-type inverter (1), a ground system induction coil (2), and a full-bridge rectification and filtering circuit ...

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Abstract

The invention discloses an electric car wireless charging device with multiple parallel connection primary side windings. The electric car wireless charging device is a wireless electric energy transmission device with one inversion rectifying device corresponding to multiple parallel connection primary side windings on the basis of the magnetic resonance principle and achieves the purpose of carrier current transforming needed in the multiple power source high voltage rectification, inversion and charging processes. The electric car wireless charging device comprises an inverter, a ground system induction coil, carrier current conversion devices, an automobile chassis secondary side winding, a load and a load detection device. The inverter receives electric energy from a power plant, electric energy is transmitted to multiple induction coils connected in parallel through inversion, the load detection device detects the corresponding output car number and the battery load state, a control signal is transmitted, and the output current is adjusted through the carrier current conversion devices installed on each parallel connection primary side and transmitted into the load through the ground system induction coil and the chassis secondary side winding in a resonance mode. Autoregulation of the system can be achieved, the problem that the efficiency is low due to the fact that one primary side of an existing electric car wireless charging system can only correspond to one secondary side is optimized, and the stability and effectiveness of the system are improved.

Description

technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to a wireless charging device for electric vehicles with multiple primary side windings connected in parallel. Background technique [0002] The function of the electric vehicle wireless power transmission device is to transmit electric energy through the electromagnetic coupling between the coil buried on the ground and the secondary coil fixed on the vehicle chassis, and charge the power battery. It has a series of advantages such as safety, environmental protection, full automation, and maintenance-free. . The input end of the charging device is connected to the AC grid 220V, and the output end is equipped with a charging plug for charging the load battery. [0003] Although wireless charging technology has the characteristics of flexible and convenient use, from the perspective of relatively low power conversion efficiency and large energy loss, further rese...

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Application Information

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IPC IPC(8): B60L11/18H02J50/12H02J50/40H02J7/02
CPCB60L53/12H02J7/025H02J50/12H02J50/40Y02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 徐进俞普德卢胜利
Owner NANJING AGRICULTURAL UNIVERSITY
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