Magnetic resonant electric vehicle wireless charging integrated device and control method thereof

Abstract

The invention relates to a magnetic resonant electric vehicle wireless charging integrated device. The electric vehicle wireless charging integrated device comprises a power transmitting device and apower receiving device, wherein the power transmitting device is arranged on the ground or below the ground, the power receiving device is arranged on a vehicle chassis, and is located above the powertransferring device during charging; and resonant circuits are used, the magnetic field coupling is maximized, the highest power transmission capability is generated at the resonant frequency, and meanwhile, the electric vehicle wireless charging integrated device has certain anti-deviation capability. The invention further provides a foreign object detection method and a charging control methodof the magnetic resonant electric vehicle wireless charging integrated device, rapid charging can be achieved, and metal foreign objects which affect the charging effect and exist between the power transmitting device and the power receiving device can be detected.

Description

technical field [0001] The invention relates to a wireless charging system for electric vehicles, in particular to a magnetic resonance type wireless charging integrated device for electric vehicles and a control method thereof. Background technique [0002] With the advancement and development of science and technology, automobiles are gradually getting rid of their dependence on oil, and countries all over the world have begun research on electric vehicles. The 8th Global New Energy Vehicle Conference was grandly opened at the Beijing National Convention Center on December 14, 2017. As the world's largest electric vehicle market, China is ushering in the era of "double points" new policy. The Netherlands, Norway, Germany and California, USA Other places have made it clear that traditional fuel vehicles will be completely canceled in the future, and the electrification of vehicles is the general trend. [0003] Throughout the country and abroad, the use of electrification ...

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Problems solved by technology

[0004] At present, there are some related WPT technical solutions at home and abroad, but there are still some such as short transmission distance, poor anti-offset ability; poor anti-interference for other electrical and electronic equipment; the structure is not compact and light enough, that is, the degree of light weight is poor; The heat loss of eddy current and metal parts close to WPT is serious; the generated radiation has an impact on the environment and human body and other issues

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