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Electric vehicle wirelessly powered type electromagnetic coupling mechanism

An electromagnetic coupling and wireless power supply technology, applied in circuit devices, electrical components, etc., can solve the problems of increased AC loss at the energy receiving end, large AC impedance of a single coil, affecting system efficiency, etc. Sensitivity value and the effect of improving system efficiency

Active Publication Date: 2017-06-23
重庆华创智能科技研究院有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Single-coil pick-up is used in the high-power system of electric vehicles. Due to the large AC impedance of the single-coil, the AC loss at the energy receiving end increases, which affects system efficiency and causes heating problems.

Method used

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  • Electric vehicle wirelessly powered type electromagnetic coupling mechanism
  • Electric vehicle wirelessly powered type electromagnetic coupling mechanism
  • Electric vehicle wirelessly powered type electromagnetic coupling mechanism

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Embodiment

[0026] An electromagnetic coupling mechanism for wireless power supply of electric vehicles, such as image 3 As shown, it includes a segmented guide rail-type primary side energy emission mechanism 1 and a secondary side energy pickup mechanism 2, and each section of the guide rail of the primary side energy emission mechanism 1 is composed of several T-shaped magnetic cores 101 arranged at equal intervals and arranged The primary coil 102 above the T-shaped magnetic core is composed of the upper and lower coils. The upper coil is a coil wound on the outermost coil in the lower coil. The primary coil The cross-section is L-shaped, and the secondary energy pick-up mechanism 2 is composed of several secondary coils 201 connected in parallel. The secondary coils are two-layer coils inside and outside, such as Image 6 As shown, the secondary magnetic core 202 is a bow-shaped magnetic core, such as Figure 7 As shown, the convex parts at both ends of the bow-shaped magnetic core...

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Abstract

The present invention provides an electric vehicle wirelessly powered type electromagnetic coupling mechanism. On the basis of the segmented guide rail power supply mode, a primary-side energy transmission mechanism adopts a T-shaped magnetic core and an L-shaped coil, so that the self-inductance value is reduced. Meanwhile, the resonant voltage is reduced and the safety of the system is guaranteed. The internal resistance of the coil is reduced and the system efficiency is improved. A secondary-side energy pickup mechanism adopts the multi-coil parallel mode, so that the electric energy pick-up capability of a pickup terminal is optimized. Therefore, the pick-up power is greater. The anti-offset capability of energy transmission is improved and the power transmission stability is ensured.

Description

technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to an electromagnetic coupling mechanism for wireless power supply of electric vehicles. Background technique [0002] Wireless Power Transmission (WPT) technology, referred to as WPT technology, is a technology for power transmission through electromagnetic coupling. The design of the coupling mechanism is the core point in wireless power transmission technology, which directly affects the power, efficiency, transmission distance, offset degree, volume and cost of the entire system. [0003] In the WPT system, electric energy is input from the power grid to the energy conversion device, which generates high-frequency current and injects it into the energy transmitting mechanism to generate a high-frequency magnetic field; the secondary energy pick-up mechanism picks up the electric energy through electromagnetic coupling and then passes through the power convers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/10H02J50/12
Inventor 孙跃王智慧周意唐春森叶兆虹
Owner 重庆华创智能科技研究院有限公司
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