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Method for switching multiple coils of primary side of dynamic wireless energy transmission system in real time

A wireless energy transmission and circuit system technology, 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 reducing no-load energy loss

Active Publication Date: 2018-08-24
WUHAN UNIV OF TECH
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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

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  • Method for switching multiple coils of primary side of dynamic wireless energy transmission system in real time
  • Method for switching multiple coils of primary side of dynamic wireless energy transmission system in real time
  • Method for switching multiple coils of primary side of dynamic wireless energy transmission system in real time

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Embodiment Construction

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

[0018] Such as 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., and a secondary side energy receiving device is composed of a secondary side receiving coil, a secondary side resonant circuit, The DC / DC conversion circuit and the like form the energy and finally transfer the energy to the load battery. The LCC resonant network on the primary and secondary sides can enable the system to achieve single power factor output, and the DC / DC circuit is used to control the output power to improve efficiency. The primary side multi-coil energy transmission system is composed of multiple energy transmitting devices to realize the dynamics of the secondary...

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Abstract

The invention relates to a method for switching multiple coils of the primary side of a dynamic wireless energy transmission system in real time. The method comprises disposing position sensors at theentrance and the exit of each segment coil to detect the position signal of a vehicle and transmit the position signal to a controller to calculate a vehicle traveling speed. Furthermore, it is possible to predict the position of a receiving coil at each moment and a coupling relationship between the primary and secondary coils, and accordingly to determine the switching state of an energy outputdevice at a transmitting end. Therefore, the energy injection device of the primary side can be in a working state if a receiving coil passes, and in a disconnected state is not, thereby realizing the segmental power supply of the dynamic energy transmission, effectively reducing the no-load energy loss of the dynamic wireless system, and improving system efficiency.

Description

technical field [0001] The invention relates to dynamic wireless energy transmission, in particular to a method for real-time switching of primary side multi-coils applied to a dynamic wireless energy system. Background technique [0002] As we all know, in recent years, problems such as environmental pollution and energy shortage have become increasingly prominent, and electric vehicles have been developed more vigorously due to their environmental friendliness, low emissions, high efficiency, and strong reliability, and have good application prospects. However, current electric vehicles have not yet been widely used due to problems such as poor battery life 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 and charging efficiency of electric vehicles. [0003] The wireless charging technology based on electromagnetic induc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12B60L11/18
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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