Electric vehicle wireless charging system

A technology for electric vehicles and wireless charging, applied in electric vehicles, electromagnetic wave systems, battery circuit devices, etc., can solve the problems of high cost and low battery energy density, and achieve the effect of improving output power, improving convenience, and efficient and normal operation.

Inactive Publication Date: 2014-07-16
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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 approva

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0024] The invention provides a wireless charging system for electric vehicles, which not only overcomes the problems of contact safety and exposed wires caused by the wired charging method of electric vehicles, but also better realizes the interaction between electric vehicles and power grids, reducing the charging time of electric vehicles. Impact on the physical connection to the grid. Such as figure 1 The system shown includes a power conversion transmitting device 11, a power conversion receiving device 12 and a storage bat...

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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 ...

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Application Information

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IPC IPC(8): H02J7/00H02J17/00H02J50/12
Inventor 李晓强李武峰严辉李索宇杨磊李凯旋魏刚柳宇航郭晋伟
Owner STATE GRID CORP OF CHINA
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