Wireless charging system for electric car

Abstract

The embodiment of the invention relates to a wireless charging system for an electric car. The wireless charging system comprises an electric energy wireless transmitting subsystem and an electric energy wireless receiving subsystem. The electric energy wireless transmitting subsystem comprises a power supply, an electric energy delivery device and a transmitting coil. The electric energy wirelessreceiving subsystem comprises a receiving coil, an electric energy receiving device and a battery. The transmitting coil is arranged on the surface of the area where a parking space is occupied or underground. The receiving coil is arranged on the side face of the electric car, and the power supply transmits electric energy to the electric energy delivery device. The electric energy delivery device transmits the electric energy to the transmitting coil which converts the electric energy into magnetic energy and transmits the magnetic energy, and the receiving coil receives the magnetic energyand converts the magnetic energy into the electric energy. The electric energy receiving device transmits the electric energy to the battery, and the battery obtains the electric energy to complete charging. According to the wireless charging system, the energy delivery process without electrical connection is achieved in a wireless mode, the problems such as mechanical abrasion and contact consumption occurring to the system are reduced, and thus maintenance and operation of the system become easy.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electric vehicles, and in particular to a wireless charging system for electric vehicles. Background technique [0002] The main reason for the development of electric vehicles is the shortage of energy and people's higher requirements for quality of life. The energy consumption of automobiles in the world's total energy consumption accounts for nearly a quarter. And the quantity of automobile is constantly increasing, thereby the energy source and environmental problem that cause are just more serious. [0003] The impact of the oil crisis has made developed countries take the lead in the development of energy-saving technologies, keeping the energy consumption of industrial sectors at 50% of the total energy consumption. Due to the rapid development of the transportation sector, the energy consumption of automobiles is much higher than that of other sectors, accounting for 24% of...

AI Technical Summary

Problems solved by technology

The traditional electric vehicle charging method is plug-in, limited by the number of electrical interfaces and charging piles, only one or several electric vehicles can be charged at the same time

In addition, the installation of plug-in charging piles takes up additional space, and the contradiction of land use makes the number of charging piles very limited, which limits the large-scale promotion of electric vehicles

[0005] On the other hand, although plug-in charging piles are designed with many protection measures in mind, there are still potential safety hazards in the exposed charging plugs. Taking DC fast charging piles as an example, when they are working, the output voltage is as high as hundreds of volts. , the current is more than tens of amps, and the charging process requires special personnel to use professional protective equipment to complete the charging process; the exposed interface must also have problems such as waterproof and dustproof, and system failures will inevitably occur, which will bring a lot of maintenance and repair work. The popularity of electric charging piles is limited

[0006] On the other hand, plug-in charging piles exist independently, without forming a complete system, without total monitoring for control, and troubleshooting is time-consuming and laborious

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