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Dynamic wireless power supply system used for electric vehicle and based on parallel multistage composite resonant structures and power supply method realized by adopting system

A technology of wireless power supply and resonant structure, applied in electric vehicles, electromagnetic wave systems, battery circuit devices, etc., can solve the problems of uneven mutual inductance of long-distance power supply coupling mechanism and electromagnetic radiation of pedestrians passing by, to avoid changes in power transmission efficiency and ensure Effects of stability and efficiency

Active Publication Date: 2015-06-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem of uneven mutual inductance of the long-distance power supply coupling mechanism in the existing road-type electric vehicle dynamic wireless power supply technology and the generation of electromagnetic radiation to passers-by. Vehicle dynamic wireless power supply system and power supply method realized by using the system

Method used

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  • Dynamic wireless power supply system used for electric vehicle and based on parallel multistage composite resonant structures and power supply method realized by adopting system
  • Dynamic wireless power supply system used for electric vehicle and based on parallel multistage composite resonant structures and power supply method realized by adopting system
  • Dynamic wireless power supply system used for electric vehicle and based on parallel multistage composite resonant structures and power supply method realized by adopting system

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specific Embodiment approach 1

[0065] Specific implementation mode one: see figure 1 Describe this embodiment, the electric vehicle dynamic wireless power supply system based on multi-stage composite resonance structure parallel connection described in this embodiment, it includes a grid-side power supply system 1 and an electric vehicle-side power receiving system 2;

[0066] The grid side power supply system 1 is used to wirelessly supply power to the electric vehicle side power receiving system 2;

[0067] The grid side power supply system 1 includes a power frequency rectifier 1-1, a high frequency inverter 1-2, an n-level composite resonant circuit 1-3 and a position detection and control circuit 1-5;

[0068] The electric energy output by the power grid is sent to the high-frequency inverter 1-2 through the power frequency rectifier 1-1, and the n-level composite resonant circuit 1-3 is connected in parallel on the AC bus 1-4 output by the high-frequency inverter 1-2; n is a positive integer greater ...

specific Embodiment approach 2

[0088] Specific implementation mode two: seefigure 1 Describe this embodiment. The difference between this embodiment and the electric vehicle dynamic wireless power supply system based on multi-stage composite resonant structure parallel connection described in Embodiment 1 is that the transmitting winding 1-3-1 is square and is wound by Litz wire A multi-turn coil is made, and there is no magnetic core on the transmitting winding 1-3-1.

specific Embodiment approach 3

[0089] Specific implementation mode three: see figure 1 Describe this embodiment. The difference between this embodiment and the electric vehicle dynamic wireless power supply system based on multi-stage composite resonance structure parallel connection described in the first embodiment is that the magnetic sensor 1-3-2 is a high-sensitivity three-axis magnetic sensor. sensor.

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Abstract

The invention discloses a dynamic wireless power supply system used for an electric vehicle and based on parallel multistage composite resonant structures and a power supply method realized by adopting the system, belongs to the field of wireless power transmission, and solves problems of mutual inductance non-uniform of long-distance power supply coupling mechanisms and electromagnetic radiation generated for pedestrians in an existing road-type dynamic wireless power supply technology for electric vehicles. The dynamic wireless power supply system comprises a network-side power supply system and an electric vehicle-side power receiving system, wherein the network-side power supply system is used for wirelessly supplying power to the electric vehicle-side power receiving system; electric energy output by an electric network is transmitted to a high-frequency inverter through a power-frequency rectifier, and n stages of composite resonant circuits are connected in parallel with an alternating-current bus of output of the high-frequency inverter; an alternating-current switch is arranged on a branch of each stage of composite resonant circuit, a magnetic sensor is arranged in the center of two adjacent emitting windings or the geometric center of each emitting winding, a receiving winding is arranged on a receiving resonant circuit, and a magnetic nail is arranged on the receiving winding and mounted in the geometric center of the receiving winding. The dynamic wireless power supply system is mainly used for performing wireless power transmission on the electric vehicle.

Description

technical field [0001] The invention belongs to the field of wireless power transmission. Background technique [0002] Due to energy saving and low environmental pollution, electric vehicles have been vigorously promoted by countries all over the world. In industrial production, motor-driven fixed-site mobile equipment has been widely used, such as AGV unmanned vans, tunnel cable inspection robots, rail transit, factory automated production lines, etc. Such devices often require a built-in battery pack or an external cable for power supply, which affects the continuity and flexibility of their use. Therefore, the charging problem has become the biggest bottleneck hindering the development of new energy vehicles. [0003] Due to the limitation of the interface, the traditional plug-in charging method can only charge one electric vehicle at the same time. Moreover, the charger outputs high voltage, which will cause a series of safety problems. Wireless charging technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J50/12
CPCH02J7/025Y02T10/72
Inventor 宋凯朱春波张剑韬郭尧魏国逯仁贵
Owner HARBIN INST OF TECH
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