Cellular wireless charging pole for electric automobile

Abstract

The invention discloses a cellular wireless charging pole for an electric automobile. The cellular wireless charging pole comprises a wireless sending terminal and a wireless receiving terminal, wherein the wireless sending terminal comprises a charging pole power supply terminal which is connected with three phases of electric grid cables, and each phase of cable is connected with N transmitting coils through a rectifying filter, a DC-DC converter, a high-frequency inverter and a resonant compensator, the transmitting coils connected with the three phases of cables are indicated as A phase transmitting coils, B phase transmitting coils and C phase transmitting coils respectively, the totally 3N transmitting coils are uniformly distributed in a wireless transmitting disc in a cellular shape, the A phase transmitting coils, the B phase transmitting coils and the C phase transmitting coils are distributed adjacently with one another, and the center connecting lines of the three phases of adjacent transmitting coils form a triangle; and the wireless receiving terminal comprises receiving coils, and the receiving coils are arranged at a chassis and on the top of the electric automobile and correspond to the wireless transmitting disc and outputs the received high frequency electromagnetic signal which is subjected to voltage reduction by adopting a high frequency step-down transformer and rectification filtering by adopting the rectifying filter to a working battery of the electric automobile.

Description

technical field [0001] The invention relates to the field of charging piles for electric vehicles, in particular to a cellular wireless charging pile for electric vehicles. Background technique [0002] Electric vehicle charging stations refer to stations that charge electric vehicles, similar to gas stations today. With the low-carbon economy becoming the main theme of my country's economic development, electric vehicles, as an important part of the new energy strategy and smart grid, and one of the strategic emerging industries determined by the State Council, will surely become the focus of the development of China's automobile industry and energy industry in the future . At present, the main charging methods of electric vehicles include charging piles for ordinary charging, charging stations for fast charging and battery swapping stations. However, these three methods have certain disadvantages, but the common defect is: the common standard problem of wired connection. ...

AI Technical Summary

Problems solved by technology

However, these three methods have certain disadvantages, but the common defect is: the common standard problem of wired connection

Most of the fast charging methods are DC charging, which takes tens of minutes for a single charge, and fast charging will reduce the service life of the battery, and the impact on the urban power grid cannot be ignored

The main problems in the way of battery replacement include the standardization of batteries for electric vehicles, the management of battery circulation, etc.

With the development of wireless charging technology, people are gradually focusing on wireless charging technology. Through the principle of electromagnetic induction coupling, the short-distance wireless transmission of electric energy can be realized, and the convenient and flexible charging of electric vehicles in garages, parking spaces and even roadside charging piles can be realized. , but there is an unbalanced magnetic field in the existing magnetic energy transmitting coil, but the magnetic field strength at the center of the coil is high. Under the surrounding magnetic field strength, the receiving coil of the electric vehicle must face the center of the coil to charge efficiently

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