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A dynamic wireless power supply system for electric vehicles based on parallel connection of multi-level composite resonance structures and a power supply method realized by using the system

A technology of wireless power supply and resonant structure, applied in electric vehicles, battery circuit devices, electrical components, 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: 2016-11-02
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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  • A dynamic wireless power supply system for electric vehicles based on parallel connection of multi-level composite resonance structures and a power supply method realized by using the system
  • A dynamic wireless power supply system for electric vehicles based on parallel connection of multi-level composite resonance structures and a power supply method realized by using the system
  • A dynamic wireless power supply system for electric vehicles based on parallel connection of multi-level composite resonance structures and a power supply method realized by using the system

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specific Embodiment approach 1

[0065] Specific embodiment one: see figure 1 To explain this embodiment, the dynamic wireless power supply system for electric vehicles based on the parallel connection of a multi-level composite resonance structure described in this embodiment 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 resonance circuit 1-3 and a position detection and control circuit 1-5;

[0068] The electric energy output by the grid is sent to the high frequency inverter 1-2 through the power frequency rectifier 1-1, and the n-level composite resonance 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 than or e...

specific Embodiment approach 2

[0088] Specific implementation manner 2: see figure 1 To illustrate this embodiment, the difference between this embodiment and the electric vehicle dynamic wireless power supply system based on the parallel connection of the multi-stage composite resonance structure described in the first embodiment is that the transmitting winding 1-3-1 is square and is wound by litz wire The 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 manner three: see figure 1 To illustrate this embodiment, the difference between this embodiment and the dynamic wireless power supply system for electric vehicles based on the parallel connection of a multi-level composite resonance structure described in the first embodiment is that the magnetic sensor 1-3-2 is a high-sensitivity three-axis magnetic 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 conservation 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 trucks, tunnel cable inspection robots, rail transit, and factory automation production lines. Such devices often require built-in battery packs or external cables 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] The traditional plug-in charging method can only charge an electric vehicle at the same time due to interface limitations. Moreover, the charger outputs a high voltage, which will cause a series of safety problems. Wireless charging technology can solve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J5/00H02J50/12B60L11/18
CPCH02J7/025Y02T10/72
Inventor 宋凯朱春波张剑韬郭尧魏国逯仁贵
Owner HARBIN INST OF TECH