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Magnetic device with series excitation magnetic core

A magnetic device and magnetic core technology, applied in the field of magnetic devices, can solve the problems of circuit operating frequency electromagnetic interference, circuit complexity, increase device loss and temperature rise, etc., to improve efficiency, reduce volume, and reduce the number of coil turns Effect

Inactive Publication Date: 2013-01-23
孙建康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the increase of the operating frequency of the circuit will bring a series of problems such as electromagnetic interference and circuit complexity.
Or directly reduce the wire diameter in the coil, but at the same time increase the loss and temperature rise of the device, which is contradictory to environmental protection and energy saving

Method used

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  • Magnetic device with series excitation magnetic core
  • Magnetic device with series excitation magnetic core
  • Magnetic device with series excitation magnetic core

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Embodiment Construction

[0043]The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0044] Such as Figures 7 to 9 As shown, the principle that the magnetic core of the present invention can produce series excitation is: well-known energized helical coil can produce magnetic field, and its magnetic field intensity H, H=NI / L, (wherein I is the electric current flowing through coil, and N is coil The number of turns, L is the axial length of the coil). If a magnetic conductor is added inside, the magnetic force lines will be aggregated and redistributed by the magnetic conductor. According to the different magnetic permeability of the magnetic conductor material, the induced magnetic field strength inside the magnetic conductor is different,...

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Abstract

A magnetic device with a series excitation magnetic core comprises an A sheet magnetic core (1) and a B sheet magnetic core (2) which are spliced in an intersectional way, as well as a C sheet magnetic core (4) and a D sheet magnetic core (5), which form a circulation loop with magnetic lines of force connected end to end together with the A sheet magnetic core (1) and the B sheet magnetic core (2). The A sheet magnetic core (1) and the B sheet magnetic core (2) are respectively provided with a middle post (1-1,2-1), an edge foot (1-2,2-2) and a bottom side (1-3,2-3) vertically connected with the middle post and the edge foot. The middle post (1-1,2-1) and the edge foot (1-2,2-2) are respectively positioned on two structural layers. The middle post (1-1) of the A sheet magnetic core (1) and the edge foot (2-2) of the B sheet magnetic core (2) as well as the C sheet magnetic core (4) are positioned on the same structural layer. The middle post (2-1) of the B sheet magnetic core (2) and the edge foot (1-2) of the A sheet magnetic core (1) as well as the D sheet magnetic core (5) are positioned on the other structural layer. The bottom side (1-3) of the A sheet magnetic core (1) and the bottom side (2-3) of the B sheet magnetic core (2) are spliced together in an overlapping way.

Description

technical field [0001] The invention relates to a magnetic device made of a magnetic conductor material, in particular to a transformer or an inductor made of a series excitation magnetic core. Background technique [0002] At present, the known miniaturization method of the magnetic device is to use a magnetic material with a higher resistivity to increase the effective magnetic induction Be of the magnetic conductor material, and to increase the operating frequency f of the circuit at the same time. The specific basis is the formula of the electromagnetic induction law of the transformer in the prior art: [0003] V=4πfNBeAe [0004] V-coil induced voltage; f-working frequency; [0005] N-coil number of coils; Be-effective magnetic induction of magnetic conductor material; [0006] Ae - effective cross-sectional area of ​​the magnetic conductor material; [0007] That is to say, when the effective magnetic induction intensity Be and the operating frequency f increase, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/26H01F27/24H01F41/02
CPCH01F3/10
Inventor 孙建康
Owner 孙建康
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