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A two-degree-of-freedom wpt coil structure

A technology with degrees of freedom and coils, applied in transportation and packaging, electric vehicles, current collectors, etc., can solve the problems that the charging system cannot be charged, and wireless power transmission cannot be applied

Active Publication Date: 2021-01-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the motion of the robot joints, the charging system cannot charge while the joints are moving, and the existing coil structure for wireless power transmission cannot be applied to the wireless power transmission at the robot joints

Method used

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  • A two-degree-of-freedom wpt coil structure
  • A two-degree-of-freedom wpt coil structure
  • A two-degree-of-freedom wpt coil structure

Examples

Experimental program
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specific Embodiment

[0024] Specific examples: such as figure 2 As shown, the two ends of the receiving coil carrier 1 are respectively connected to the transmitting coil carrier 2 through the telescopic rod 5, and the telescopic rod 5 is connected to the transmitting coil carrier 2 through the rotating bearing 6; the end of one of the telescopic rods 5 passes through the transmitting coil The carrier 2 is connected with a driving device; the driving device can drive the receiving coil carrier 1 to rotate relative to the transmitting coil carrier 2 while controlling the rotation of the telescopic rod 5;

[0025] The receiving coil carrier 1 can rotate relative to the transmitting coil carrier 2 along the axis of the length direction, and the angle range is 0°-85°;

[0026] Transmitter coil T x 3 and the receiving coil R x 4 The optimal design of the winding method makes the mutual inductance M change with the angle change very little during the process of the transmitting coil rotating along th...

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Abstract

The invention discloses a two degrees of freedom WPT coil structure. A receiving coil Rx is wound around a receiving coil carrier in the longitudinal direction of the receiving coil carrier. A transmission coil Tx is wound around the outer side of a transmission coil carrier in the longitudinal direction of the transmission coil carrier, the receiving coil carrier and the transmission coil carrierare arranged coaxially in the longitudinal direction, the receiving coil carrier is rotatable and slidable relative to the transmission coil carrier along a longitudinal axis. At the same time, the transmission coil Tx is driven to rotate around an X axis and to move linearly along the x-axis in a semi-cylindrical slide groove by the receiving coil carrier. A slight change in mutual inductance ofthe input and output voltage waveforms at different rotation angles is obtained such that when the receiving coil rotates, the output power and efficiency of the system remain unchanged, and the relative rotation and sliding of the receiving coil carrier and the transmission coil carrier ensure that the WPT coil can work and transmit normally under the condition of two degrees of freedom. The structure is simple, and the structure can be applied to a robot joint to realize wireless power transmission in joint motion.

Description

technical field [0001] The invention belongs to the field of power electronics wireless power transmission research, and relates to a two-degree-of-freedom WPT coil structure. Background technique [0002] Compared with wired charging, wireless power transfer technology (WPT) has irreplaceable advantages such as convenient use, strong flexibility, and high safety. Therefore, wireless charging technology has developed rapidly in recent years and is widely used in various electronic products, electric vehicles, Industrial production, medical equipment and other fields. [0003] The optimization of the structure of the wireless power transmission coil plays an extremely important role in improving the efficiency and power of the wireless power transmission system. With the wide application of wireless power transmission technology, the structure of the transmission coil has also expanded from a simple planar spiral type to a circular ring type, a square ring type, and a hexago...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/02H02J50/12H02J50/70H02J5/00
Inventor 穆罕默德·阿布·侯兰杨洋陈文洁杨旭王睿戴立宇
Owner XI AN JIAOTONG UNIV
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