Receiver with quadrature coils for mobile device wireless power supply system

A quadrature coil, wireless power supply technology, applied in the field of receiving end, can solve the problem of large fluctuation of received power, and achieve the effect of small fluctuation range of transmission power, improved transmission efficiency, and improved coupling coefficient

Active Publication Date: 2017-11-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that in the wireless power supply system using a bipolar track at the transmitting end, the receiving end has a zero point of received power and a large fluctuation of the received power depending on the position of the receiving end, and provides a wireless power supply system applied to mobile equipment Receiver with quadrature coils

Method used

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  • Receiver with quadrature coils for mobile device wireless power supply system
  • Receiver with quadrature coils for mobile device wireless power supply system
  • Receiver with quadrature coils for mobile device wireless power supply system

Examples

Experimental program
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specific Embodiment approach 1

[0021] Specific implementation mode one: the following combination Figure 1 to Figure 5 Describe this embodiment, the receiving end with quadrature coil applied to the mobile device wireless power supply system described in this embodiment, the receiving end corresponds to the transmitting end using bipolar track in the wireless power supply system; it includes 2n receiving ends Coil 1, n orthogonal coils 2 and multiple sets of bar cores 3, where n is a positive integer;

[0022] 2n receiving coils 1 in turn form n sets of receiving ends in groups of two, and the end of the first receiving coil 1 in each group of receiving ends and the head end of the second receiving coil 1 are wound in series in a figure-eight shape ; n groups of receiving ends are sequentially connected together in parallel along the arrangement direction of the two receiving coils 1 in each group of receiving ends;

[0023] Each group of receiving ends corresponds to an orthogonal coil 2, and each orthog...

specific Embodiment approach 2

[0029] Specific implementation mode two: the following combination Figure 4 Describe this embodiment, this embodiment will further explain Embodiment 1, the length of the receiving coil 1 matches the magnetic pole spacing and the magnetic pole length of the transmitting end, and the length of each group of receiving ends is the difference between the length of the two magnetic poles of the transmitting end and the distance between the two magnetic poles with.

[0030] The center distance between two adjacent receiving coils is the distance from the pole center of the bipolar power supply track used by the transmitting end.

specific Embodiment approach 3

[0031] Embodiment 3: In this embodiment, Embodiment 2 is further described, and the directions of the magnetic fields of adjacent magnetic poles of the transmitting end are opposite.

[0032] The receiving end cooperates with the bipolar transmitting guide rail for wireless transmission of electric energy, which requires that the directions of the magnetic fields on the adjacent magnetic poles of the guide rail are opposite. The magnetic field of the transmitting end and the receiving end realizes the wireless transmission of electric energy through magnetic field coupling; when the receiving coil is directly above the magnetic pole of the transmitting guide rail, the coupling coefficient with the transmitting coil is the largest, and the coupling coefficient between the orthogonal coil and the transmitting guide rail is the smallest; when the receiving coil When the coil is between the magnetic poles of the transmitting guide rail, the orthogonal coil is directly above the mag...

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Abstract

The invention relates to a receiving end with an orthogonal coil applied to a wireless power supply system of a mobile device, and belongs to the technical field of magnetic coupling resonance wireless energy transmission. The invention aims to solve the problem that in the wireless power supply system using bipolar rails at the transmitting end, the receiving end has a zero point of received power and large fluctuations in received power depending on the position of the receiving end. Its 2n receiving coils form n sets of receiving ends in a group of two in turn, and are connected together in parallel in turn; each group of receiving ends corresponds to an orthogonal coil, and each orthogonal coil is centered on a group of receiving ends; A group of bar-shaped magnetic cores is arranged in each group of receiving ends, and a plurality of bar-shaped magnetic cores in each group of bar-shaped magnetic cores are evenly distributed in the outer frame of the receiving end along the width direction; each receiving end is connected with each positive Each of the alternating coils is matched with a resonant compensation capacitor, and is respectively connected to a rectifier bridge, and the output of the 2n rectifier bridges connected in parallel is used as the output of the receiving end. The invention serves as the receiving end of energy transmission.

Description

technical field [0001] The invention relates to a receiving end with an orthogonal coil applied to a wireless power supply system of a mobile device, and belongs to the technical field of magnetic coupling resonance wireless energy transmission. Background technique [0002] With the outbreak of environmental pollution and oil crisis, the advantages of using electric energy as the power source of mobile devices are becoming more and more prominent. However, there are a lot of problems with the traditional way of using contact power supply or carrying batteries. The contact power supply is limited by the interface. The power supply track and the receiving head of the mobile device have contact loss and require frequent maintenance. Carrying batteries will be restricted by battery volume, weight, and cost, which will affect the mileage of mobile devices. At the same time, sufficient basic charging facilities need to be built on the ground. Inconvenient power supply, poor ba...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02J50/12H01F38/14
Inventor崔淑梅王志远吴绍朋宋凯朱春波魏国
OwnerHARBIN INST OF TECH