A high-power wireless charging method and device based on electric field coupling
A technology of wireless charging and electric field coupling, applied to battery circuit devices, circuit devices, current collectors, etc., can solve the problems of no safe, reliable and convenient high-power charging method, potential safety hazards, low efficiency, etc., and achieve simple structure and safety Good performance and high transmission efficiency
Active Publication Date: 2016-08-17
XI AN JIAOTONG UNIV
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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.
Method used
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Embodiment Construction
[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0039] see figure 2, the present invention is a high-power wireless charging device based on electric field coupling, including a first rectifier bridge T 1 and the second bridge rectifier T 2 ; Among them, the first bridge rectifier T 1 The two AC terminals are connected to the mains grid V 1 , the first bridge rectifier T 1 The two DC terminals are connected in parallel through the resistor R 1 and relay K 1 connected to the parallel first filter capacitor C 1 and the two ends of the inverter 1, the two output ends of the inverter 1 are respectively connected to the first charging device pole plate 2 and the second charging device pole plate 3 of the charging device;
[0040] The second rectifier bridge T 2 The two DC terminals are connected to the parallel second filter capacitor C 2 and battery V 2 Both ends of the second bridge rectifier T 2 ...
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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 charging field of high-power transmission, 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 it is becoming more and more widely used. For example, with the rapid development of social economy, urban pollution is becoming more and more serious. In order to reduce the emission of greenhouse gases in cities, the number of new energy models and ownership has increased sharply. [0003] In the existing high-power charging technology, conventional methods include the use of fast battery replacement, charging with charging piles, charging with mains electricity, etc. 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 interface and a chargin...
Claims
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IPC IPC(8): H02J7/00H02J7/02H02J50/80H02J50/05H02J50/90
CPCH02J7/025
Inventor 汤晓君赵明张徐梁寇福林赵安新薛慧云
Owner XI AN JIAOTONG UNIV