Hoistable electric automobile wireless charging device

Abstract

The invention provides a hoistable electric automobile wireless charging device. The hoistable electric automobile wireless charging device comprises a transmitting end connected with a power frequency power supply, a receiving end connected with an electric automobile battery system, and a hoisting device connected with the receiving end, wherein the transmitting end is located under the ground; the receiving end and the hoisting device are arranged in an automobile chassis; the transmitting end comprises a transmitting coil; the receiving end comprises a receiving coil; the transmitting coil and the receiving coil are in wireless communication; the hoisting device can stretch out of the automobile chassis so that the distance between the transmitting end and the receiving end is shortened; the hoisting device comprises an outer barrel body, an inner barrel body, a thread push rod and a motor; the inner barrel body is embedded onto the outer barrel body; the motor is mounted on an inner surface of the upper end of the outer barrel body; the upper end of the thread push rod is connected with the motor; and the lower end of the thread push rod a is connected with the receiving coil. By adopting the hoistable electric automobile wireless charging device provided by the invention, the transmitting distance between the transmitting coil and the receiving coil can be effectively shortened and high electromagnetic coupling is realized; and the charting efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle wireless charging, in particular to a liftable wireless charging device for electric vehicles. Background technique [0002] With the increasingly tight fossil energy sources, searching for other alternative energy sources has become a common topic in human society. The energy issue in the automotive field is one of the hot topics of discussion. For traditional vehicles driven solely by oil, people have begun to design vehicles that can be powered by oil, Gas, electricity and other energy-driven vehicles, among which the technology of vehicles driven by electricity as energy is currently the most mature and advanced. The existing charging technology connects charging piles and vehicles through physical cables to complete the charging task. Therefore, in order to satisfy the driving of electric vehicles, a large number of charging piles need to be built, which will not only occupy a large ...

AI Technical Summary

Problems solved by technology

Among them, the electromagnetic induction technology uses electromagnetic induction to generate a certain amount of alternating current in the secondary coil, so as to realize the transmission of electric energy from the input end to the receiving end. Large-scale application; electromagnetic resonance technology is to use the energy supply end and the energy receiving end to work at the same frequency or a certain range of operating frequencies, the energy supply end and the energy receiving end can realize energy transfer

But its disadvantage is that it is currently technically difficult to achieve miniaturization and high efficiency. The current technical capability is a coil with a diameter of half a meter, which can provide 60W of power at a distance of about 1m; radio wave technology is composed of microwave transmitters and receivers. , when the receiving device detects the microwave emitted by the transmitting device, it can realize energy conversion, and can still provide a stable DC power when the load is adjusted, but the disadvantage of this charging method is that the efficiency of the magnetron when generating microwaves is too low, causing many Electricity is converted to heat and is wasted

In view of the characteristics of the above three wireless charging technologies, electromagnetic resonance and radio waves are technically still unable to meet the requirements, and electromagnetic induction is limited by the transmission distance and cannot be widely used.

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