CN101950656A

CN101950656A - Method for winding coils of high-frequency resonance transformer

Info

Publication number: CN101950656A
Application number: CN 201010265639
Authority: CN
Inventors: 王炜; 刘寅
Original assignee: ECU ELECTRONICS INDUSTRIAL Co Ltd
Current assignee: ECU ELECTRONICS INDUSTRIAL Co Ltd
Priority date: 2010-08-24
Filing date: 2010-08-24
Publication date: 2011-01-19
Anticipated expiration: 2030-08-24
Also published as: CN101950656B

Abstract

The invention relates to a method for winding coils of a high-frequency resonance transformer. The method comprises the following steps of: winding a first layer of primary coils N1-1 on a skeleton shaft of a skeleton along the axial direction, wherein the first layer of primary coils are not fully wound; winding a first layer of insulated retaining walls on the skeleton shaft next to the first layer of primary coils N1-1; then winding multiple layers of primary coils N1-2 on the first layer of primary coils N1-1; winding secondary coils on the first layer of insulating retaining walls; and winding multiple layers of insulated retaining walls between the multiple layers of primary coils N1-2 and the secondary coils. In the invention, the first layer of primary coils N1-1 are not fully wound, and a part of free area is reserved to wind the first layer of insulated retaining walls; by adopting the method, the coupling degree of the primary coils and the secondary coils can be regulated through regulating the width of the first layer of insulated retaining walls and the widths of subsequent multiple layers of insulated retaining walls so as to precisely regulate the leakage inductance of the transformer.

Description

The winding method of high-frequency resonant transformer coil

Technical field

The present invention relates to a kind of high-frequency resonant transformer, especially a kind of winding method of high-frequency resonant transformer coil.

Background technology

The winding method of high-frequency resonant transformer has following two kinds at present:

Shaped grooved transformer framework and winding mode thereof that the first is generally used, this winding method coiling is convenient, structural design is simply clear, but also have a lot of weak points: at first, in the product design stage, the leakage inductance of transformer is the variable an of the unknown, baffle width and transformer framework also will be determined according to the size of this leakage inductance, after product approval, just face the problem of skeleton die sinking, mould will inevitably increase the design and development cost of product.In addition, also provide in type transformer framework on the market, the position of its fluting is fixing, regulates the size of leakage inductance if desired, need increase barricade at the end near groove, adjusts the width of barricade and has also just adjusted leakage inductance.

It two is windings of wide barricade, and this mode has reduced the expense of die sinking, and the adjusting of inductance value avoids the restriction of baffle width and first electrode insulation distance, can regulate accurately.Its weak point mainly is that a large amount of window area is occupied by barricade, and the window utilance is low, and this just needs to increase the volume of transformer, also can increase cost simultaneously and take the space of circuit design.

Summary of the invention

The object of the present invention is to provide that a kind of cost is low, the winding method of the high-frequency resonant transformer coil that can accurately regulate transformer leakage inductance.

For achieving the above object, the present invention has adopted following technical scheme: a kind of winding method of high-frequency resonant transformer coil, at first it axially twines ground floor primary coil N1-1 and not around full in the skeleton axle upper edge of skeleton, and next-door neighbour's ground floor primary coil N1-1 barricade that again ground floor insulated is wrapped on the skeleton axle; Then on ground floor primary coil N1-1, twine multilayer primary coil N1-2, on ground floor insulation barricade, twine secondary coil, twine the multilayer insulation barricade between multilayer primary coil N1-2 and the secondary coil.

As shown from the above technical solution, ground floor primary coil N1-1 of the present invention is not around full, stay a part of vacant area around the ground floor barricade that insulate, adopt this winding, width that can be by adjusting ground floor insulation barricade and at the beginning of after this width of multilayer insulation barricade is regulated, the degree of coupling of secondary coil, thereby transformer leakage inductance is regulated accurately.Among the present invention the means of control leakage inductance convenient accurately, reduced product cost, be convenient to product design, optimized advantage such as properties of product, stronger practical value is arranged.

Description of drawings

Fig. 1 is a circuit diagram of the present invention;

Fig. 2 is the structural representation of skeleton among the present invention;

Fig. 3 is a cutaway view of the present invention;

Fig. 4,5 all is coiling schematic diagrames of secondary coil among the present invention.

Embodiment

A kind of winding method of high-frequency resonant transformer coil comprises to the winding method of primary coil with to the winding method of secondary coil.When primary coil was carried out coiling, at first it axially twined ground floor primary coil N1-1 and not around full in the skeleton axle 1a upper edge of skeleton 1, and next-door neighbour's ground floor primary coil N1-1 barricade 2 that again ground floor insulated is wrapped on the skeleton axle 1a; Then on ground floor primary coil N1-1, twine multilayer primary coil N1-2, on ground floor insulation barricade 2, twine secondary coil, twine multilayer insulation barricade 3 between multilayer primary coil N1-2 and the secondary coil, as shown in Figure 1.Described multilayer primary coil N1-2, multilayer insulation barricade 3 and secondary coil three's consistency of thickness, described insulation barricade adopts insulating tape 4, as shown in Figure 1, 2, 3.

As shown in Figure 3, the consistency of thickness of the thickness of described ground floor primary coil N1-1 and ground floor insulation barricade 2, the two uniform winding is on skeleton axle 1a, outer surface at ground floor primary coil N1-1 and ground floor insulation barricade 2 twines insulating tape 4, the outer surface of insulating tape 4 twines multilayer primary coil N1-2 and secondary coil, multilayer primary coil N1-2 and ground floor primary coil N1-1 are positioned at the same end of skeleton axle 1a, secondary coil and ground floor insulation barricade 2 are positioned at the same end of skeleton axle 1a, and the winding width of secondary coil is greater than the winding width of ground floor insulation barricade 2.Adopt this method, width that can be by adjusting the ground floor barricade and after this width of barricade regulate the degree of coupling of first polar curve circle, thereby transformer leakage inductance is regulated accurately.

As Fig. 3,4, shown in 5, described secondary coil is by first of two equal turn numbers, two level coil N2, N3 forms, the described first secondary coil N2 is with second subprime coil N3 and become two strands to twine one deck on insulating tape 4, after intact, if the first secondary coil N2 is near multilayer insulation barricade 3, when twining the second layer, the first secondary coil N2 and second subprime coil N3 are intersected winding, make second subprime coil N3 near multilayer insulation barricade 3, when twining the 3rd layer, again the first secondary coil N2 and second subprime coil N3 are intersected winding, make the first secondary coil N2 near multilayer insulation barricade 3, the winding of later each layer and the like.The described first secondary coil N2 is with second subprime coil N3 and become two strands to twine one deck on insulating tape 4, after intact, if second subprime coil N3 is near multilayer insulation barricade 3, when twining the second layer, the first secondary coil N2 and second subprime coil N3 are intersected winding, make the first secondary coil N2 near multilayer insulation barricade 3, when twining the 3rd layer, again the first secondary coil N2 and second subprime coil N3 are intersected winding, make second subprime coil N3 near multilayer insulation barricade 3, the winding of later each layer and the like.

Shown in Fig. 3,4,5, the pin of secondary coil is set on the skeleton 1, the first secondary coil N2 connects 12 pins, second subprime coil N3 connects 11 pins, first and second secondary coil N2, N3 adopt and around mode twine.The described first secondary coil N2 is with second subprime coil N3 and become two strands to twine one deck on insulating tape 4, and after intact, because the first secondary coil N2 is positioned on the second subprime coil N3, the first secondary coil N2 sees Fig. 4 near multilayer insulation barricade 3; When twining the second layer, the first secondary coil N2 and second subprime coil N3 are intersected winding, the first secondary coil N2 is positioned under the second subprime coil N3, make the close multilayer insulation barricade 3 of second subprime coil N3, see Fig. 5; When twining the 3rd layer, again the first secondary coil N2 and second subprime coil N3 are intersected winding, make the close multilayer insulation barricade 3 of the first secondary coil N2, the winding of later each layer and the like.

At first, can control leakage inductance accurately to the winding method of primary coil, this has just made things convenient in the selection of circuit design stage to other component parameters.For example, in the LLC controlled resonant converter, need the leakage inductance of transformer and resonant capacitance cooperation to decide resonance frequency, if leakage inductance can't accurately be adjusted, the range of choice of resonant capacitance is just very little so, even does not have corresponding components and parts value corresponding.Secondly, because resonant converter exists owing to the uneven current imbalance problem that causes of the leakage inductance of positive-negative half-cycle, in this winding method to secondary coil, secondary coil adopts two-layer winding, balance intersect and around, make secondary winding symmetry fully to have guaranteed leakage inductance balance between two windings, can avoid the generation of this kind situation.

The area of barricade obviously reduces compared with wide barricade winding among the present invention, has guaranteed the usable floor area of window greatly, has reduced the volume of transformer, reduce cost, saved circuit space, and because its accurate control mode, consistency of product is higher, is fit to produce in batches use.

Claims

1. the winding method of a high-frequency resonant transformer coil, it is characterized in that: at first it axially twines ground floor primary coil N1-1 and not around full in skeleton axle (1a) upper edge of skeleton (1), and next-door neighbour's ground floor primary coil N1-1 barricade (2) that again ground floor insulated is wrapped on the skeleton axle (1a); Then twine multilayer primary coil N1-2, go up at ground floor insulation barricade (2) and twine secondary coil, twine multilayer insulation barricade (3) between multilayer primary coil N1-2 and the secondary coil at ground floor primary coil N1-1.

2. the winding method of high-frequency resonant transformer coil according to claim 1, it is characterized in that: described secondary coil is made up of first and second secondary coil N2, the N3 of two equal turn numbers, first and second secondary coil N2, N3 adopt and around mode twine.

3. the winding method of high-frequency resonant transformer coil according to claim 1, it is characterized in that: the consistency of thickness of the thickness of described ground floor primary coil N1-1 and ground floor insulation barricade (2), the two uniform winding is on skeleton axle (1a), outer surface at ground floor primary coil N1-1 and ground floor insulation barricade (2) twines insulating tape (4), the outer surface of insulating tape (4) twines multilayer primary coil N1-2 and secondary coil, multilayer primary coil N1-2 and ground floor primary coil N1-1 are positioned at the same end of skeleton axle (1a), secondary coil and ground floor insulation barricade (2) is positioned at the same end of skeleton axle (1a), and the winding width of secondary coil is greater than the insulate winding width of barricade (2) of ground floor.

4. the winding method of high-frequency resonant transformer coil according to claim 1, it is characterized in that: described multilayer primary coil N1-2, multilayer insulation barricade (3) and secondary coil three's consistency of thickness, described insulation barricade adopts insulating tape (4).

5. according to the winding method of claim 2 or 3 described high-frequency resonant transformer coils, it is characterized in that: the described first secondary coil N2 is with second subprime coil N3 and become two strands at the last one deck that twines of insulating tape (4), after intact, if the first secondary coil N2 is near multilayer insulation barricade (3), when twining the second layer, the first secondary coil N2 and second subprime coil N3 are intersected winding, make second subprime coil N3 near multilayer insulation barricade (3), when twining the 3rd layer, again the first secondary coil N2 and second subprime coil N3 are intersected winding, make the first secondary coil N2 near multilayer insulation barricade (3), the winding of later each layer and the like.

6. according to the winding method of claim 2 or 3 described high-frequency resonant transformer coils, it is characterized in that: the described first secondary coil N2 is with second subprime coil N3 and become two strands at the last one deck that twines of insulating tape (4), after intact, if second subprime coil N3 is near multilayer insulation barricade (3), when twining the second layer, the first secondary coil N2 and second subprime coil N3 are intersected winding, make the first secondary coil N2 near multilayer insulation barricade (3), when twining the 3rd layer, again the first secondary coil N2 and second subprime coil N3 are intersected winding, make second subprime coil N3 near multilayer insulation barricade (3), the winding of later each layer and the like.