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Structure of capacitive coupling mechanism

A technology of capacitive coupling and coupling mechanism, used in circuit devices, electrical components, etc., to meet the needs of lightweight applications, facilitate mass production, and achieve low-density effects

Active Publication Date: 2022-06-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of complex structure, heavy weight and high cost of the capacitive coupling mechanism in the prior art, the present invention proposes a capacitive coupling mechanism, which utilizes Made of PCB board structure, which can reduce system cost and weight, and integrate mechanical fasteners and electrical connectors to reduce the complexity of the coupling mechanism

Method used

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  • Structure of capacitive coupling mechanism
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  • Structure of capacitive coupling mechanism

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Experimental program
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Effect test

Embodiment 1

[0049] like Figure 18 As shown, after assembly, the primary-side coupling pieces and the secondary-side coupling pieces are arranged alternately, parallel to each other and spaced apart, and assembled to form a group A coupling piece on one side of the connection board and a B group coupling piece located on the other side of the connection board. Group A and Group B coupler spacing d AB . The plate thickness of the primary side coupling piece 1 satisfies d A > x P , d B > x P . The spacing between the coupling pieces of group A and group B d AB Should be satisfied greater than d A , d B Twice the maximum value in order to reduce the coupling capacity between A and B group coupling mechanisms. In this example d AB =10mm. The facing area between the copper-plated area 13 on each primary side coupling sheet 1 and its opposite secondary side coupling sheet 3 copper-plated area 32 is S =267mm 2 . Table 1 gives the specific parameters of the circuit:

Embodiment 2

In the capacitive coupling mechanism made of metal, if the connecting piece of metal material is used to fix the primary and secondary side coupling pieces, the primary and secondary side coupling pieces of the A / B groups with inconsistent potentials during operation must be respectively fixed, so in the connecting piece In terms of quantity, the primary side coupling mechanism and the secondary side coupling mechanism require at least 4 connectors respectively, and a total of at least 8 connectors; if the connectors of metal materials are not used to fix the primary and secondary side coupling pieces, then an additional electrical connection is required Connect the primary and secondary side coupling pieces of group A / B respectively, so the primary side coupling mechanism and the secondary side coupling mechanism need at least 2 mechanical fixing pieces and 2 electrical connecting pieces respectively, and a total of at least 4 mechanical fixing pieces and 4 an electrical connec...

Embodiment 3

[0058] From the weight comparison, it can be known that using the capacitive coupling mechanism structure in this paper, the weight will be lower, which is helpful to realize the lightweight of the coupling mechanism.

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Abstract

The invention provides a capacitive coupling mechanism which comprises a primary side coupling mechanism and a secondary side coupling mechanism, the primary side coupling mechanism and the secondary side coupling mechanism of the capacitive coupling mechanism are both designed by adopting PCB (Printed Circuit Board) structures, and compared with the traditional metal laser cutting and reverse molding processes, the capacitive coupling mechanism is more beneficial to batch production; and the low-cost requirement of the electric field coupling type wireless power transmission system is met. According to the invention, through ingenious design of the primary and secondary side coupling sheets and the connecting plate structure, mechanical connection is realized through the clamping grooves of the coupling sheets and the connecting plate, and electrical connection is realized through the welding spots of the coupling sheets and the connecting plate. The number of parts is reduced, so that the structure of the capacitive coupling mechanism is simpler, and the system complexity is reduced.

Description

technical field [0001] The invention relates to a capacitive coupling mechanism, which belongs to the field of electric energy conversion and can be applied to miniaturized wireless charging occasions such as portable electronic equipment, mechanical arms, and inertial turntables. Background technique [0002] Wireless Power Transfer (WPT for short) is widely used in electric vehicle charging, rail transit, high-speed rotating equipment power supply, high-voltage power line power supply, underground pipeline due to its advantages of no contact failure, convenient use, good mobility and easy maintenance. It has been widely used in network detection, implanted equipment and power supply of measurement and control equipment. Among them, Inductive Power Transfer (IPT for short) and Capacitive Power Transfer (CPT for short) have become two important research directions in WPT technology due to their large transmission power and high efficiency. [0003] Compared with IPT technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/05
CPCH02J50/05H02J50/005
Inventor 吴羽温振霖殷金安徐立刚陈乾宏任小永张之梁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS