Electric automobile wireless charging apparatus and wireless charging system

Abstract

The invention provides an electric automobile wireless charging apparatus. The apparatus comprises an electromagnetic wave receiving coil, the electromagnetic wave receiving coil is connected with a storage battery through a rectification filtering circuit, the electromagnetic wave receiving coil is used for generating an alternating magnetic field so as to generate an induction electromotive force, an electric automobile is also provided with a wireless signal emission device, and the wireless signal emission device is connected with the storage battery through a voltage detection device; and only when the voltage detection device detects that the voltage of the output end of the storage battery is within a normal set scope, can the wireless emission device be activated, association signals are emitted, a wireless signal receiving end activates a control circuit after receiving the association signals, and the charging apparatus starts charging, such that open circuits, short circuits and over charge of the end of the storage battery are effectively avoided, and the system safety performance is improved.

Description

technical field [0001] The invention relates to a wireless charging system for electric vehicles, belonging to the technical field of electric vehicles. Background technique [0002] The charging method of electric vehicles currently used in the market is mainly wired charging, but there are many shortcomings in the conventional wired charging method. The charging station needs to lay power cables, and when charging, it is connected to the charging device of the electric vehicle through a wire to charge the electric vehicle. , Open-air charging cannot be realized when encountering bad weather, and the entire charging process requires manual operation and cannot be automated. The research on the wireless charging method of electric vehicles has been the focus of attention of various electric vehicle researchers in the industry. At present, the research on the wireless charging method of electric vehicles mainly focuses on the transmission efficiency, but the charging safety ...

AI Technical Summary

Problems solved by technology

However, once the receiving end is open or short-circuited during charging, the output voltage will be too high, causing system damage and even endangering personal safety; Charging will only be performed when the position of the transmitter is relative. When there is a deviation in the parking position, resulting in a large error between the transmitter and the receiver, it will seriously affect the power transmission efficiency

In terms of communication, the wireless communication currently used is used to detect whether the electric vehicle has driven into the charging station and whether the battery is fully charged. Generally, wireless communication such as WIFI is used, but this type of communication method is limited by the speed of the communication network, and the response is generally slow, so it cannot be used first. One-time control of the connection of electric vehicle batteries to the grid

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