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Wireless charging control method and device for electric automobile

A technology for wireless charging and electric vehicles, applied in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of inability to reach resonance state and decrease in energy transmission efficiency, and achieve the effect of improving energy transmission efficiency

Active Publication Date: 2020-04-17
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a wireless charging control method and device for electric vehicles, which is used to solve the problem that the resonance state cannot be reached during the wireless energy transmission process, resulting in a decrease in energy transmission efficiency

Method used

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  • Wireless charging control method and device for electric automobile
  • Wireless charging control method and device for electric automobile
  • Wireless charging control method and device for electric automobile

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Embodiment of the wireless charging control method for electric vehicles:

[0032] Such as figure 1 As shown, this embodiment provides a two-way wireless charging system for electric vehicles, and the charging system includes two parts: a ground side and a vehicle side. Among them, the ground side includes a ground controller M6, a bidirectional AC / DC module M2, N ground bidirectional inverter modules M1, and N ground energy transmitting / receiving mechanisms. The first connection end of the bidirectional AC / DC module M2 is used to connect to the AC power grid M3, and the second connection end of the bidirectional AC / DC module M2 is connected to the first connection ends of N ground bidirectional inverter modules M1 through a ground...

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Abstract

The invention relates to a wireless charging control method and device for an electric automobile. The method comprises the steps of detecting the voltage phase and the current phase of a coupling coil of an energy transmitting terminal in real time, and judging the size of the voltage phase and the current phase; and if the voltage phase leads / lags the current phase, controlling to reduce / increase the voltage duty ratio of an energy receiving terminal. In the wireless energy transmission process, when the voltage phase of the energy transmitting terminal leads the current phase, the voltage duty ratio of the energy receiving terminal is controlled to be reduced; and when the voltage phase of the energy transmitting terminal lags behind the current phase, the voltage duty ratio of the energy receiving terminal is controlled to be increased, so that the energy transmitting terminal and the energy receiving terminal can reach a resonance state, and the energy transmission efficiency is improved.

Description

technical field [0001] The invention relates to a wireless charging control method and device for an electric vehicle, belonging to the technical field of wireless charging. Background technique [0002] Current electric vehicles basically use conductive connection for charging, but this charging method is very inconvenient. Every time charging requires human intervention, safety and life cannot be guaranteed, so wireless charging technology has emerged as the times require. At present, wireless charging technology has been used in many consumer electronic products, such as wireless charging mobile phones, wireless charging cars and so on. [0003] The development of wireless charging technology is advancing by leaps and bounds, and there are already relatively mature products on the market. Among them, the wireless energy transmission mode of most products is one-way transmission, and a small number of products can realize two-way transmission of energy. For example, the ...

Claims

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Application Information

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IPC IPC(8): B60L53/12B60L53/126
CPCY02T10/70Y02T10/7072Y02T90/14
Inventor 张龙飞仝利锋刘威
Owner ZHENGZHOU YUTONG BUS CO LTD
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