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Shielding closed body demagnetization structure and method

A closed body and demagnetization technology, applied in the direction of magnetic/electric field shielding, magnetic objects, electrical components, etc., can solve the problems of magnetization of soft magnetic materials and achieve good demagnetization effect

Pending Publication Date: 2022-04-12
HARBIN INST OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to propose a demagnetization structure and method for a shielding closure, so that the demagnetization can be completed in one step and performed on the X, Y, and Z axes at one time, which not only solves the problem of local soft magnetic material magnetization in the demagnetization process, but also Can improve demagnetization efficiency

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  • Shielding closed body demagnetization structure and method
  • Shielding closed body demagnetization structure and method

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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] refer to Figure 1-2 As shown, the present invention proposes an embodiment of a demagnetization structure of a shielding enclosure, the demagnetization structure of the shielding enclosure includes a hexahedral shielding layer 1 and a demagnetization coil 2, and the demagnetization coil 2 is formed by the hexahedron shielding layer 1 respectively. X, Y, and Z three-axis directions surround the hexahedral shielding layer 1 .

[0028] Further, the demagne...

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Abstract

The invention discloses a shielding closed body demagnetization structure and method, and belongs to the field of demagnetization. The demagnetizing method for the shielding closed body comprises the following steps: S100, uniformly winding an X-axis coil, a Y-axis coil and a Z-axis coil in the demagnetizing coil on four thin layers parallel to an X axis, four thin layers parallel to a Y axis and four thin layers parallel to a Z axis of the hexahedral shielding layer respectively; and S200, the X-axis coil, the Y-axis coil and the Z-axis coil are electrified at the same time, so that a magnetic field constructed by the demagnetization coil forms three-dimensional alternate circulation, and demagnetization is completed in one step. According to the invention, demagnetization can be completed in one step and can be carried out on X, Y and Z axes at one time, so that the problem of magnetizing local soft magnetic materials in the demagnetization process is solved, and the demagnetization efficiency can be improved.

Description

technical field [0001] The invention relates to a demagnetization structure and method of a shielding closed body, belonging to the field of demagnetization. Background technique [0002] At present, large-scale magnetic shields can shield the earth's magnetic field, man-made magnetic field and other magnetic fields in the environment, so that the internal magnetic field becomes weaker and even close to a non-magnetic state. However, since the magnetically permeable material used is a soft magnetic material, it will gradually be magnetized when placed in a magnetic field environment for a long time, resulting in an increasing internal magnetic field, and therefore, its shielding effect is getting worse and worse. At present, the structure of the magnetic shield is mainly hexahedron, and the demagnetization methods adopted are I-type, Z-type and L-type, which are uniaxial, biaxial and triaxial demagnetization respectively. Among them, in the biaxial and triaxial demagnetizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F13/00H01F5/00H05K9/00
CPCH01F13/006
Inventor 潘东华陈奕陶王矜婷林生鑫靳崇渝李立毅
Owner HARBIN INST OF TECH
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