Wireless power transmission device and wireless power transmission system
A technology of wireless power transmission and ring line, which is applied in the direction of circuit device, output power conversion device, AC power input conversion to DC power output, etc. It can solve the problems that it is difficult to achieve high efficiency and stability of wireless power transmission, and achieve reduction of leakage potential, Improve the energy transmission distance and transmission efficiency, and shield the effect of magnetic flux leakage
Active Publication Date: 2021-04-06
STATE GRID BEIJING ELECTRIC POWER +1
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Problems solved by technology
[0004] The main purpose of this application is to provide a wireless power transmission device and a wireless power transmission system to solve the problem that it is difficult to achieve high efficiency and stability of wireless power transmission in the prior art
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[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0024] It should be noted that the terms "first" and "second...
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The invention provides a wireless electric energy transmission device and a wireless electric energy transmission system, and the device comprises: a transmitting coil which is electrically connected with an AC power supply and is used for generating an incident magnetic field; a receiving coil which is electrically connected with the load, is opposite to the transmitting coil in the magnetic field direction of the incident magnetic field, is arranged at intervals and is used for generating magnetic field coupling with the transmitting coil; and a hybrid ring array which is arranged between the transmitting coil and the receiving coil, wherein the hybrid ring array comprises at least one amplifying ring coil and a plurality of shielding ring coils, the shielding ring coils are arranged around the amplifying ring coil, the first magnetic field direction is the same as the magnetic field direction of the incident magnetic field, the second magnetic field direction is opposite to the magnetic field direction of the incident magnetic field, the first magnetic field direction is the magnetic field direction of an induced magnetic field generated by the amplifying loop coil, and the second magnetic field direction is the magnetic field direction of an induced magnetic field generated by the shielding loop coil. According to the wireless electric energy transmission device, high efficiency and stability of wireless electric energy transmission are ensured through the amplifying loop coil and the shielding loop coil.
Description
technical field [0001] The present application relates to the technical field of wireless power transmission, and in particular, to a wireless power transmission device and a wireless power transmission system. Background technique [0002] At present, wireless power transfer (WPT) technology has been widely used in various electronic devices such as mobile phones, smart watches, and drones. In addition, these advantages of WPT technology are being widely used in high-power applications, such as electric vehicles, electric buses, electric trains, etc. WPT uses a magnetic field as the energy transfer medium. Therefore, when designing a WPT system, the leakage field and the efficiency of the WPT system must be considered. As the transmission power increases from tens of watts to several kilowatts, the problem of leakage electromotive force and system efficiency become particularly important for wireless power transmission systems. The leaked electromotive force can affect n...
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IPC IPC(8): H02J50/12H02J50/20H02J50/50H02J50/70H02M7/5387H02M7/06
CPCH02J50/12H02J50/20H02J50/50H02J50/70H02J50/005H02M7/5387H02M7/06
Inventor 陈艳霞李鑫明吕立平及洪泉金颖杜晓雅张金虎孟颖刘漫雨王芳
Owner STATE GRID BEIJING ELECTRIC POWER