Electric vehicle wireless charging system

Abstract

The invention provides an electric vehicle wireless charging system. The electric vehicle wireless charging system comprises an electrical energy conversion emitting device and an electrical energy conversion receiving device, wherein the electrical energy conversion emitting device comprises a high-frequency inverter and a compensation capacitor which are respectively connected with the two ends of an emitting coil, and the high-frequency inverter is connected with the compensation capacitor; the electrical energy conversion receiving device comprises a compensation capacitor and an AC / DC conversion device, the compensation capacitor is connected with the two ends of a receiving coil, and the AC / DC conversion device is connected with the two ends of a load coil. Compared with the prior art, the electric vehicle wireless charging system not only resolves the problem that a battery of an electric vehicle is low in energy density, but also can reflect interaction between the electric vehicle and a power grid during charging better, and weaken influence on the power grid caused by charging of the electric vehicle.

Description

technical field [0001] The invention relates to a wireless charging system, in particular to a wireless charging system for electric vehicles. Background technique [0002] With the increase of income, the automobile industry will continue to maintain a high-speed growth trend. When facing the severe challenge of oil shortage, electric vehicles have increasingly become an important trend in the development of electric vehicles. [0003] Currently, charging methods for electric vehicles mainly include: wired fast charging, wired slow charging, and battery replacement. ①: The slow charging of the wired method is only suitable for the time period after the user stops and the decentralized layout with a small service coverage; ②: The fast charging of the wired method requires instantaneous and powerful electric power, which cannot be satisfied by the conventional power grid, and a dedicated charging network must be established However, the establishment of a dedicated charging ...

AI Technical Summary

Problems solved by technology

①: The slow charging of the wired method is only suitable for the time period after the user stops and the decentralized layout with a small service coverage; ②: The fast charging of the wired method requires instantaneous and powerful electric power, which cannot be satisfied by the conventional power grid, and a dedicated charging network must be established However, the establishment of a dedicated charging network involves the transformation of the entire national power grid, which is costly. From discussion, project approval to network formation, it cannot be realized overnight; Unified planning requires the efforts of the government, enterprises and other parties to complete

[0004] Therefore, it is necessary to provide a wireless charging system that can overcome the shortcomings of the above three charging methods, solve the problem of low energy density of batteries in electric vehicles, better reflect the interaction with the grid, and weaken the impact of charging behavior of electric vehicles on the grid. appears to be particularly important

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