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Dynamic wireless energy transmission circuit system and its real-time switching method of primary side multi-coils

A technology of wireless energy transmission and circuit system, applied in the field of real-time switching of multiple coils on the primary side, can solve problems such as no-load loss, achieve the effects of improving accuracy, improving safety and stability, and improving work efficiency

Active Publication Date: 2022-03-25
WUHAN UNIV OF TECH
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem of no-load loss in the primary side multi-coil circuit of the dynamic wireless energy transmission system and design a primary side multi-coil switching method that controls the energy injection state of the transmitter according to the vehicle's traveling position

Method used

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  • Dynamic wireless energy transmission circuit system and its real-time switching method of primary side multi-coils
  • Dynamic wireless energy transmission circuit system and its real-time switching method of primary side multi-coils
  • Dynamic wireless energy transmission circuit system and its real-time switching method of primary side multi-coils

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Embodiment Construction

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like figure 1 As shown, the primary side energy transmitting device of the dynamic wireless energy transmission system is composed of a rectifier bridge, an inverter circuit, a primary side resonant circuit, a primary side transmitting coil, etc. The secondary side energy receiving device is composed of a secondary side receiving coil, a secondary side resonant circuit, The DC / DC conversion circuit and other components make up the energy and finally transfer the energy to the load battery. Through the LCC resonant network of the primary and secondary sides, the system can realize single power factor output, and the DC / DC circuit is used to control the output power to improve the efficiency. Wireless charging.

[0019] Due to the use of the primary side multi-coil design, multiple primary side energy transmitting devices will ru...

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Abstract

The invention relates to a method for real-time switching of primary side multi-coils of a dynamic wireless energy transmission system. In the method, a position sensor is installed at the entrance and exit of each segmented coil to detect the position signal of the vehicle and send it to a controller to calculate the vehicle speed. Furthermore, the position of the receiving coil at each time point and the coupling relationship between the primary and secondary coils can be predicted, and based on this, the switch state of the energy output device at the transmitting end can be judged. In this way, the energy injection device on the primary side can be in the working state when the receiving coil passes by, otherwise it is in the disconnected state, realizing the segmented power supply of dynamic energy transmission, effectively reducing the no-load energy loss of the dynamic wireless system, Improve system efficiency.

Description

technical field [0001] The invention relates to dynamic wireless energy transmission, in particular to a real-time switching method of primary side multi-coils applied to a dynamic wireless energy system. Background technique [0002] As we all know, environmental pollution and energy shortage have become increasingly prominent in recent years, and electric vehicles have been developed more vigorously because of their environmental friendliness, low emissions, high efficiency, and strong reliability, and have good application prospects. However, the current electric vehicles have not been able to be applied on a large scale due to their poor endurance and high cost. The dynamic wireless energy transmission technology based on the principle of electromagnetic induction is a new battery charging technology that can effectively improve the battery life of electric vehicles and improve the charging efficiency. [0003] The wireless charging technology based on electromagnetic i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12B60L53/12
CPCH02J50/12B60L53/12Y02T90/16Y02T10/70Y02T10/72Y02T10/7072Y02T90/14
Inventor 张立炎孙照帅陈启宏全书海谢长君石英黄亮邓坚
Owner WUHAN UNIV OF TECH
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