Electric vehicle dynamic wireless charging system capable of suppressing power fluctuation through magnetic integration

A technology for electric vehicles and power fluctuations, applied in the direction of electric vehicle charging technology, electric vehicles, output power conversion devices, etc., to achieve the effects of suppressing output power fluctuations, constant output current characteristics, and good ZVS working conditions

Pending Publication Date: 2022-03-11
CHONGQING UNIV
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  • Application Information

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Problems solved by technology

[0005] The present invention provides a dynamic wireless charging system for electric vehicles that suppresses power fluctuations through magnetic integration. The technical problem to be solved is: how to suppress the power fluctuations of the EVDWC system from other aspects, so as to overcome the existing problems in the existing three aspects of research

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  • Electric vehicle dynamic wireless charging system capable of suppressing power fluctuation through magnetic integration
  • Electric vehicle dynamic wireless charging system capable of suppressing power fluctuation through magnetic integration
  • Electric vehicle dynamic wireless charging system capable of suppressing power fluctuation through magnetic integration

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Embodiment Construction

[0042] The embodiment of the present invention will be explained in detail below in conjunction with the accompanying drawings. The examples given are only for the purpose of illustration, and cannot be interpreted as limiting the present invention. The accompanying drawings are only for reference and description, and do not constitute the scope of patent protection of the present invention. limitations, since many changes may be made in the invention without departing from the spirit and scope of the invention.

[0043] The design of the transmitting coil in the EVDWC system adopts a short single structure, such as figure 1 As shown, it is a layout method that comprehensively considers EV length and energy utilization. When the receiving coil reaches the center of the transmitting coil, the next coil is activated and the previous coil is deactivated. As the receiving coil moves along the track, the transmitting coil below the EV is turned on and off sequentially. In the wor...

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Abstract

The invention relates to the technical field of magnetic coupling wireless charging, particularly discloses an electric vehicle dynamic wireless charging system for restraining power fluctuation through magnetic integration, and provides a magnetic integration structure which comprises an integrated reverse coil reversely connected with a transmitting coil in series and an integrated inductance coil connected in a receiver compensation circuit. The integrated reverse coil can reduce mutual inductance change caused by charging distance or misalignment, stable equivalent mutual inductance between the receiving coil and the transmitting coil on a road is achieved, suppression of power fluctuation in an EVDWC system is achieved, and the integrated inductance coil achieves compactness of a coupler and zero voltage switching (ZVS) condition configuration. The integrated inductance coil replaces an external heavy compensation inductor in the LCC resonance compensation network, and in addition, the total input impedance of the system is micro-inductive, so that the inverter can work under the ZVS condition; the invention provides a parameter design method of the coupler, which not only can effectively restrain output power fluctuation, but also realizes better ZVS working conditions.

Description

technical field [0001] The invention relates to the technical field of magnetic coupling wireless charging, in particular to a dynamic wireless charging system for electric vehicles that suppresses power fluctuations through magnetic integration. Background technique [0002] The dynamic wireless charging system for electric vehicles realizes continuous wireless power supply during electric vehicle (EV) driving. When an electric vehicle equipped with receiving coils passes the road, power from a transmission line buried under the road is continuously transferred to the battery through the air gap. Therefore, electric vehicles can work continuously, greatly improving their practicality and convenience. The EVDWC system provides an effective solution to the problems of high battery cost, short cruising range, and hidden dangers of charging safety in electric vehicles. In the EVDWC system, there are two common structures called long track loop structure and short guide rail s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/12H02J50/12H02J50/00H02J50/40H02M7/44H02M7/537G06F30/20
CPCB60L53/12H02J50/12H02J50/005H02J50/40H02M7/44H02M7/537G06F30/20Y02T10/70Y02T10/72Y02T10/7072Y02T90/14
Inventor 唐春森史可王智慧李小飞戴欣孙跃苏玉刚周远钊费迎军
Owner CHONGQING UNIV
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