A magnetic coupling structure and wireless power transmission system

A magnetic coupling and magnetic energy technology, applied in circuit devices, electrical components, etc., can solve the problems of low utilization rate of magnetic cores and poor coupling performance, and achieve the effect of reducing the amount of magnetic cores, reducing construction costs, and improving the utilization rate of magnetic cores

Active Publication Date: 2022-02-22
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Technical solution: The present invention proposes a magnetic coupling structure and a wireless power transmission system to solve the technical problems of low utilization rate of magnetic cores and poor coupling performance in the existing wireless power transmission system using a single-to-single magnetic coupling structure

Method used

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  • A magnetic coupling structure and wireless power transmission system
  • A magnetic coupling structure and wireless power transmission system
  • A magnetic coupling structure and wireless power transmission system

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Embodiment 1

[0031] figure 1 The magnetic coupling structure proposed in Embodiment 1 is shown, including: including a primary side magnetic energy emission structure and a secondary side magnetic energy pickup structure; the primary side magnetic energy emission structure is a double-sided common-core structure, including the first magnetic core layer in the middle and The first coil and the second coil are respectively laid on the front and back of the first magnetic core layer; there are two secondary magnetic energy pick-up structures, which are the front magnetic energy pick-up structure and the reverse magnetic energy pick-up structure, and the two secondary magnetic energy pick-up structures Arranged in parallel on both sides of the primary side magnetic energy emission structure, and two secondary side magnetic energy pick-up structures are respectively coupled and connected to the primary side magnetic energy emission structure; the front magnetic energy pick-up structure includes ...

Embodiment 2

[0036] The present invention also proposes a wireless power transmission system. In this embodiment, the background of electric vehicle charging is substituted, and a wireless power transmission system for electric vehicle charging is proposed, such as figure 2 As shown, it includes: power grid access terminal, primary side AC-DC rectifier device, primary side DC-AC high frequency inverter device, primary side resonant compensation circuit, magnetic coupling mechanism described in Embodiment 1, secondary side resonant compensation circuit , secondary side AC-DC rectification device, DC-DC converter and battery load, among which the primary side AC-DC rectification device and primary side DC-AC high frequency inverter device can be collectively referred to as the primary side power conversion device, and the secondary side AC- DC rectification and DC-DC converter are collectively referred to as secondary power conversion devices.

[0037]In this embodiment, the primary-side DC...

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Abstract

The present invention proposes a magnetic coupling structure and a wireless energy transmission system. The magnetic coupling structure includes a primary side magnetic energy emission structure and a secondary side magnetic energy pickup structure: the primary side magnetic energy emission structure is a double-sided common-core structure, including a first magnetic The core layer and the first coil and the second coil laid on the front and back of the first magnetic core layer respectively; there are two secondary magnetic energy pickup structures, namely the front magnetic energy pickup structure and the reverse magnetic energy pickup structure, and the two secondary magnetic energy pickup structures The structures are arranged in parallel on both sides of the primary side magnetic energy emitting structure, and the two secondary side magnetic energy pickup structures are respectively coupled and connected to the primary side magnetic energy emitting structure. The wireless power transmission system applies the magnetic coupling structure, and only one magnetic core layer can realize the power transmission to the two secondary side power receiving circuits, which greatly reduces the amount of magnetic cores on the coupling mechanism and improves the magnetic performance. Core utilization and magnetic coupling efficiency.

Description

technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to a magnetic coupling structure and a wireless power transmission system. Background technique [0002] Wireless power transmission technology is a new mode that completely breaks away from the shackles of wires or cables by means of intangible soft media in space (such as magnetic fields, electric fields, lasers, microwaves, etc.), and realizes wireless power transmission and flexible power access in a complete sense. Greater cleanliness, flexibility and safety are regarded as an important way to achieve clean, flexible and efficient utilization of energy, and have received extensive attention and research from the international community. The traditional wireless power transmission is one-to-one mode, the output power and efficiency of the whole system are low, the magnetic core layer in the primary power transmission coil cannot be fully utilized, and the cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/40H02J50/70
CPCH02J50/12H02J50/402H02J50/70
Inventor 夏晨阳杨旭浩李晓丽李壮冯其凯魏楠韩潇左马帅
Owner CHINA UNIV OF MINING & TECH
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