High-power wireless charging method and device based on electric field coupling

Abstract

The invention discloses a high-power wireless charging method and device based on electric field coupling. Two output connection ends of the charging device are connected with a charging line of a charged device in an electric field coupling mode, one counter electrode of each capacitor is arranged on the charged device, the other counter electrode of each capacitor is arranged on a charging device, a wireless communication and location awareness system is installed between the charged device and the charging device for searching respective positions, detecting parameters and charging device line parameters are transmitted, the charging device is automatically aligned and connected with a charged system after the charged device gives out a charging request, then AC-AC conversion is carried out on commercial power under control of an inversion controller to obtain the intermediate frequency alternating current with the appropriate frequency, energy is coupled to the charged device in the electric field coupling mode, and the alternating current is rectified by the charged device into the direct current again to charge a storage battery. According to the high-power wireless charging method and device, as electric field coupling is achieved, electromagnetic radiation does not exist, and the safety performance is good.

Description

technical field [0001] The invention belongs to the field of high-power transmission charging, and in particular relates to a high-power wireless charging method and device based on electric field coupling. Background technique [0002] High-power charging is used in many industries and is becoming more and more widely used. For example, with the rapid development of society and economy, urban pollution is becoming more and more serious. In order to reduce urban greenhouse gas emissions, the number of new energy vehicles and the number of new energy vehicles has increased sharply. [0003] Among the existing high-power charging technologies, conventional methods include the use of quick battery replacement, charging with charging piles, and charging with commercial power. The above methods have great constraints on the application and development of charging equipment such as pure electric vehicles. For example, when an electric vehicle is charged, it must have a power inte...

AI Technical Summary

Problems solved by technology

On the one hand, it is impractical to bury the charging coil itself on all roads, not only the cost is high, but also the efficiency is very low because the induction coil is difficult to face the transmitting coil

On the other hand, security is also a major hidden danger, which is difficult to maintain

[0008] To sum up, although there are many patents related to wireless charging, there is still no safe, reliable and convenient high-power charging method that has been well implemented.

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