Planar transformer and magnetic core thereof

A planar transformer and magnetic core technology, applied in the direction of transformer/inductor magnetic core, transformer, fixed transformer, etc., can solve the problems of reduced coupling degree of planar transformer, inability to form free air gap adjustment, poor anti-saturation ability, etc., and achieve high Current density, small leakage inductance, and improved anti-saturation ability

Active Publication Date: 2012-02-22
SHENZHEN JINGQUANHUA ELECTRONICS
View PDF3 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a planar transformer and its magnetic core, which aims to solve the problems of reduced c

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Planar transformer and magnetic core thereof
  • Planar transformer and magnetic core thereof
  • Planar transformer and magnetic core thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0018] see figure 1 , the planar transformer provided by the present invention includes an upper magnetic core 1, a lower magnetic core 5 and a coil 3, and the upper magnetic core 1 includes a quadrilateral flat plate 11 made of a ferrite material, and four sides of the quadrilateral flat plate 11 are provided with Four triangular flat plates 12 with the same thickness and material and a motherboard. The quadrilateral flat plate 11 and the triangular flat plate 12 are spliced ​​and pasted on the mother board to form a square or rectangular upper magnetic core 1 . There are gaps 13 where two of the four triangles 12 touch each other, the triangles do not touch each other, and there is also a gap between the triangular flat plate 12 and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a planar transformer and a magnetic core thereof. The magnetic core comprises an upper magnetic core and a lower magnetic core; the upper magnetic core comprises a quadrangular flat plate, and four triangular flat plates which are arranged on four sides of the quadrangular flat plate and have the same thickness and the same material; a square or rectangular upper magnetic core is formed by splicing the quadrangular flat plate with the triangular flat plates; the lower magnetic core is an integrated structure having a shape which is consistent with that of the upper magnetic core; an annular groove is arranged on the lower magnetic core; a raised cylinder is disposed in the centre of the annular groove; two groove clamps are arranged on the lateral surface of the cylinder; and the entire magnetic core is formed by buckling the upper magnetic core with the lower magnetic core together. By employing the planar transformer and the magnetic core thereof, the filtering effect and the EMI (Electro-Magnetic Interference) effect of the transformer can become better by means of a distributive capacitor; in the transformer with the structure, not only is a magnetic circuit shortened but also the magnetic circuit distribution is more uniform; and the structure can also be lowered in vortex loss, and effective in heat-radiating and magnetic-conducting performances.

Description

technical field [0001] The invention relates to an electronic transformer, in particular to a planar transformer with a special structure and its magnetic core. Background technique [0002] A transformer is a critical component in a power supply. Traditional transformers usually consist of ferrite cores and copper coils, which are bulky and prone to electromagnetic interference. Planar transformers can effectively solve volume and high frequency problems. Planar transformers are characterized by high frequency, low profile, small height and high operating frequency. However, the existing planar transformer designers and manufacturers at home and abroad are all using rectangular magnetic cores to make planar transformers. This structure will inevitably affect the technical performance of planar transformers: 1. The structural characteristics of this magnetic core, its coil At least half of it is exposed outside the magnetic core, which will cause its EMI index to deterior...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01F27/26H01F27/24H01F27/30H01F30/06
Inventor 鞠万金张立品汪兆华李战功刘建飞谢春华孔徐生窦晓月
Owner SHENZHEN JINGQUANHUA ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap