Wireless energy receiver and dynamic wireless energy constant voltage output system

Abstract

The invention relates to a wireless energy receiver and a dynamic wireless energy constant voltage output system. The receiver comprises a pickup coil, a relay coil and a magnetic shielding layer, and the relay coil comprises a first sub-coil and a second sub-coil; the first sub-coil and the second sub-coil are electrically connected in series and located on the two sides of the magnetic shielding layer respectively, the first sub-coil is used for being coupled with the energy transmitting coil to achieve wireless energy pickup, and the second sub-coil is used for being coupled with the pickup coil and transmitting the picked energy to the pickup coil to supply power to a load; and the first sub-coil is of a double-D-shaped coil structure with the same size, the current directions in the double-D-shaped coil structure are opposite, the second sub-coil is of a square coil structure, and the pickup coil and the second sub-coil are the same in structure. The system has the advantages that: the receiving end forms a double-S topological structure and can be matched with the multi-S topology of the transmitting end to form the dynamic wireless energy constant-voltage output system, so that the constant-voltage output characteristic of the receiving end is effectively kept, the number of components is reduced, the system structure is simplified, and the design cost is saved.

Description

technical field [0001] The invention relates to the technical field of wireless energy transmission, in particular to a wireless energy receiver and a dynamic wireless energy constant voltage output system. Background technique [0002] With the development of wireless energy transmission technology, its application scope is becoming wider and wider, especially for wireless charging systems in the fields of AGV cars, inspection robots, electric vehicles, etc. In order to meet long-distance continuous wireless charging, dynamic wireless charging technology is also gradually It has been proposed, such as the wireless charging car multi-rail dynamic charging control system and its control method disclosed in Chinese patent 201810995533.6, and the dynamic wireless charging system and control method based on power detection position disclosed in 201910009132.3, so that the primary side of the system uses multiple The structure of the first-level launching guide rail and the secon...

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Problems solved by technology

[0003] However, the existing wireless charging systems often need to achieve constant voltage output to meet the charging needs of various types of loads, so the LCC-S constant voltage output compensation topology can be popularized and used, such as the power inspection robot level disclosed in Chinese patent 202010294063.8 Combined wireless charging system and control method, however, the multi-level guide rail wireless charging system based on multi-LCC-single S compensation network realizes dynamic constant voltage output, but also brings complex primary side circuit structure and high hardware cost, etc. question

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