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Foil-wound coil, manufacturing method and device thereof

A manufacturing method and coil technology, applied in coil manufacturing, transformer/inductor coil/winding/connection, inductor/transformer/magnet manufacturing, etc., can solve the problem of insufficient size, poor short-circuit resistance, and coil slack. problems, to increase the utilization rate, reduce the eddy current loss, and achieve the effect of firm bonding

Active Publication Date: 2019-01-29
WOLONG ELECTRIC GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the tension of the entire thick foil during winding is particularly large, which is unbearable for ordinary foil winding machines, which often causes the wound coil to relax, the size does not meet the requirements, and the short-circuit resistance becomes poor.

Method used

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  • Foil-wound coil, manufacturing method and device thereof
  • Foil-wound coil, manufacturing method and device thereof
  • Foil-wound coil, manufacturing method and device thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the drawings.

[0027] Such as figure 2 As shown, a method for manufacturing a foil-wound coil includes the following steps: S1: Hang a plurality of metal sub-foil 11 with wrap-around insulation 12 on the wire-hanging support 13, and each metal sub-foil 11 passes through the gathering baffle 14. S2: Control the tension of the metal foil 1 through the tension controller 15; S3: Make the metal foil 1 enter the resin infiltration tank 16, and the resin infiltration tank 16 is provided with a positioning wheel 17 , The metal foil 1 is connected to the main winding wheel 19 of the foil winding machine via the positioning wheel 17, and the resin infiltration tank 16 impregnates the metal foil 1 with resin; S4: After the metal foil 1 comes out of the resin infiltration tank 16, the metal foil 1 is dried , Make the metal foil 1 and the resin solidify into a whole; S5: set the spool to be wound on the main...

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PUM

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Abstract

The invention discloses a foil coil and a manufacturing method and equipment thereof. The foil coil comprises multiple metal foil layers wound around a coil shaft, each foil coil layer comprises multiple pieces of sub metal foil which are equal in thickness and arrayed in sequence, and interturn insulation exists between every two adjacent pieces of sub metal foil. After each metal foil layer is unfolded, the multiple pieces of sub metal foil are sequentially arranged side by side. The multiple pieces of wrapped and insulated sub metal foil with equal thickness and unequal width can be used side by side, flexibility of material usage is improved, the sub metal foil can be welded one by one if the length of the single sub metal foil is insufficient, the use ratio of the materials is increased, the width of the foil can be expanded at random, and limit of the ordering cycle is eliminated, which is beneficial for accelerating production of a transformer.

Description

Technical field [0001] The invention relates to the technical field of dry-type transformers, in particular to a foil-wound coil for transformers. Background technique [0002] In the existing dry-type transformer manufacturing field, although foil-wound coils have been commonly used, as the transformer capacity increases, the thickness of the foil is correspondingly thicker. The side effects of the transverse magnetic leakage of the transformer are particularly prominent, and the eddy current loss of the foil-wound coil caused by the transverse magnetic leakage also increases sharply. Statistics show that when the thickness of the foil reaches 2mm and above, the eddy current loss accounts for more than 30% of the basic resistance loss. In addition, the tension of the entire thick foil during winding is extremely large, and it is difficult for ordinary foil winding machines to withstand it, which often causes the wound coil to relax, the size does not meet the requirements, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/04H01F41/06H01F41/12H01F27/28H01F27/32H01F27/34
CPCH01F27/2847H01F27/323H01F27/324H01F27/327H01F27/34H01F41/04H01F41/122H01F41/125H01F41/127H01F2027/2857H01F2027/328H01F2027/348
Inventor 周华郑淑芳王百升
Owner WOLONG ELECTRIC GRP CO LTD