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Large-current square common mode choke structure and manufacturing method thereof

A common mode inductor, high current technology, applied in the high current square common mode inductor structure and its manufacturing field, can solve the problems of unstable use, poor seismic performance of common mode inductors, weak shock resistance, etc. The effect of dispersing the vibration position and improving the stability

Pending Publication Date: 2022-07-01
SHENZHEN SUNLORD AUTOMOTIVE ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-current square common-mode inductor structure and its manufacturing method, which solves the problem of poor shock resistance and weak impact resistance of the prior art common-mode inductors, resulting in unstable use

Method used

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  • Large-current square common mode choke structure and manufacturing method thereof
  • Large-current square common mode choke structure and manufacturing method thereof
  • Large-current square common mode choke structure and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] refer to Figure 1-7 , a high-current square common-mode inductor structure, including:

[0035] Two sets of first magnetic cores 1 arranged in parallel;

[0036] Two sets of second magnetic cores 2 are arranged in parallel. The two sets of second magnetic cores 2 are installed between the two sets of first magnetic cores 1 to form a square structure with the first magnetic cores 1. The vertical cross-section of the second magnetic cores 2 It is in an inclined state with the horizontal plane, and the opposite surfaces of the two second magnetic cores 2 are arc surface structures; the second magnetic cores 2 are provided with annular first card slots 6 at equal distances, and the two adjacent first card slots 6 are arranged between them. A clamping ring 8 is formed between the clamping rings 8, and the outer end surface of the clamping ring 8 is provided with a second slot 7, and the depth of the second slot 7 is smaller than the depth of the first slot 6, and the coil ...

Embodiment 2

[0041] refer to Figure 1-7 , a method for manufacturing a high-current square common-mode inductor structure, comprising the following steps:

[0042] The first step: using flat wire flat enameled wire winding, the coil 4 is gradually wound from one end of the second magnetic core 2 to the other end, the coil 4 is on the second magnetic core 2, and is first stuck in the first slot 6 to form a first The winding 9 is then wound on the first winding 9 to form the third winding 11, then stuck in the second slot 7 to form the second winding 10, and finally stuck on the third winding 11 and the second winding 10 After that, wrap into the second first card slot 6 and move forward in sequence;

[0043]In the second step, the two pins 5 of the coil 4 are taken out, and the pins 5 are horizontally slid into the slot 13 of the fixed block 12 from the outside. Press down on pin 5;

[0044] In the third step, the pin 5 is fixed by the spot welding process, and the solder liquid is spra...

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Abstract

The invention discloses a large-current square common-mode inductor structure and a manufacturing method thereof. The large-current square common-mode inductor structure comprises two groups of first magnetic cores arranged in parallel; the two groups of second magnetic cores are arranged in parallel, and the two groups of second magnetic cores are arranged between the two groups of first magnetic cores, so that a square structure is formed by the two groups of second magnetic cores and the first magnetic cores. Through the arrangement of the first clamping grooves and the second clamping grooves, winding wires of each layer of the coil are staggered up and down, and the situation of magnetic leakage is reduced; the opposite end faces of the two second magnetic cores are each of an arc-shaped structure, the coincident magnetic field between the two second magnetic cores is increased to the maximum degree, and the electrifying amount of the inductor in unit time is increased. Meanwhile, the two pins of the coil are clamped through the clamping linkage structure and then fixed to the fixing block through welding, the installation stability of the pins of the coil is greatly improved, therefore, the influence of vibration of the common mode inductor on the stability of the coil is reduced, and the square common mode inductor structure which is capable of preventing magnetic flux leakage, large in current, good in anti-seismic performance and stable in work is achieved.

Description

technical field [0001] The invention relates to a high-current square common-mode inductor structure and a manufacturing method thereof. Background technique [0002] Common mode inductors, also known as common mode choke coils, are often used in computer switching power supplies to filter common mode electromagnetic interference signals. In the design of the board, the common mode inductance also plays the role of EMI filtering, which is used to suppress the electromagnetic wave generated by the high-speed signal line to radiate outward. [0003] The existing common mode inductor includes a magnetic core and a coil, the magnetic core is a square structure formed by butting two U-shaped blocks, the edge of the magnetic core is provided with a chamfer, and the outer surface of the magnetic core is provided with insulation. layer, the coils are wound in the middle of the two U-shaped blocks respectively. However, this kind of common mode inductor has weak anti-vibration and ...

Claims

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Application Information

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IPC IPC(8): H01F27/30H01F27/24H01F27/28H01F27/29H01F27/34H01F37/00H01F41/00
CPCH01F27/306H01F27/24H01F27/2828H01F27/29H01F27/346H01F37/00H01F41/00
Inventor 谭越尉朗陈紫伟
Owner SHENZHEN SUNLORD AUTOMOTIVE ELECTRONICS CO LTD