CN212257136U - Transformer - Google Patents

Abstract

A transformer, comprising: a magnetic column; the primary winding comprises at least one coil structure connected in series, each coil structure is wound on the magnetic pole and is formed by winding a flat copper wire with the surface covered with an insulator, and the coil structure comprises a plurality of layers of coils along the extension direction of the magnetic pole; a secondary winding including a coil structure wound around the magnetic pillar; wherein each coil structure in the primary winding and the secondary winding is supported by adjacent other coil structures. Through the utility model discloses the scheme can effectively reduce the direct current resistance in the transformer and leak the inductance, does benefit to and improves transformer power, and compact structure does benefit to the miniaturized design that realizes the transformer.

Description

Transformer

Technical Field

The utility model relates to a transformer technical field specifically relates to a transformer.

Background

In the electric automobile industry, a transformer is required to be miniaturized and to have a high power. However, the increase in power generally means an increase in product size and cost, which is incompatible with the smaller size and lower cost desired by the industry. Therefore, the existing transformer structure is difficult to meet the requirements of the electric automobile market.

Disclosure of Invention

The utility model provides a technical problem provide a modified transformer, can compromise high power and small-size.

In order to solve the above technical problem, an embodiment of the utility model provides a transformer, include: a magnetic column; the primary winding comprises at least one coil structure connected in series, each coil structure is wound on the magnetic pole and is formed by winding a flat copper wire with the surface covered with an insulator, and the coil structure comprises a plurality of layers of coils along the extension direction of the magnetic pole; a secondary winding including a coil structure wound around the magnetic pillar; wherein each coil structure in the primary winding and the secondary winding is supported by adjacent other coil structures.

Optionally, the coil structure included in the secondary winding is formed by winding a flat copper wire with an insulator covered on the surface.

Optionally, for each coil structure in the secondary winding, on the same plane, the coil structure includes a plurality of coils.

Optionally, the secondary winding includes a plurality of coil structures, and at least a part of the coil structures in the plurality of coil structures are formed by winding the same flat copper wire.

Optionally, the coil structure is obtained by winding a flat copper wire with an insulator covered on the surface in a flat winding manner.

Optionally, the secondary winding includes a plurality of coil structures, and at least a portion of the plurality of coil structures is uniformly or non-uniformly disposed between adjacent coil structures of the primary winding.

Optionally, at least a part of the plurality of coil structures of the primary winding is formed by winding the same flat copper wire.

Optionally, for each coil structure in the primary winding, on the same plane, the coil structure comprises a plurality of coils.

Optionally, the multiple coils include an outer coil and an inner coil, and for two adjacent layers of coils of the coil structure, the inner coil of the previous layer of coils is connected with the inner coil of the next layer of coils.

Optionally, the multi-turn coil includes an outer-turn coil and an inner-turn coil, and for any two adjacent coil structures of the multiple coil structures of the primary winding, or for any two adjacent coil structures of the multiple coil structures of the secondary winding, the outer-turn coil of one of the two adjacent coil structures is connected to the outer-turn coil of the other of the two adjacent coil structures.

Optionally, the number of the secondary windings is multiple, and the multiple secondary windings are uniformly or non-uniformly arranged between adjacent coil structures of the primary winding.

Compared with the prior art, the utility model discloses technical scheme has following beneficial effect:

an embodiment of the utility model provides a transformer, include: a magnetic column; the primary winding comprises at least one coil structure connected in series, each coil structure is wound on the magnetic pole and is formed by winding a flat copper wire with the surface covered with an insulator, and the coil structure comprises a plurality of layers of coils along the extension direction of the magnetic pole; a secondary winding including a coil structure wound around the magnetic pillar; wherein each coil structure in the primary winding and the secondary winding is supported by adjacent other coil structures.

Compared with the design that the existing transformer needs a plastic skeleton to support the coil structure, the scheme of the embodiment utilizes the advantage of high strength of the flat copper wire, so that the transformer obtained by winding does not need an additional supporting structure, the miniaturization design is possible, and the cost is low. Furthermore, the flat copper wire has high utilization rate, and the coils are arranged more tightly, so that the direct current resistance and the leakage inductance can be reduced, and the power is improved. Furthermore, the flat copper wire is formed independently, and the winding is convenient. Furthermore, because no plastic skeleton is needed, the heat dissipation is better. Therefore, the transformer can better achieve both high power and small size.

Further, the secondary winding includes a plurality of coil structures, and at least a portion of the plurality of coil structures are uniformly or non-uniformly disposed between adjacent coil structures of the primary winding. Therefore, the primary winding and the secondary winding are closer to each other due to the design of the primary side and the secondary side overlapping and winding, and the coupling effect is better.

Drawings

Fig. 1 is a schematic diagram of a transformer according to a first embodiment of the present invention;

FIG. 2 is an exploded view of the transformer shown in FIG. 1;

fig. 3 is a schematic perspective view of the primary winding of fig. 1;

FIG. 4 is a top view of the primary winding shown in FIG. 3;

fig. 5 is a side view of the primary winding shown in fig. 3;

fig. 6 is a partial schematic view of a transformer according to a second embodiment of the present invention;

fig. 7 is an exploded view of a transformer according to a third embodiment of the present invention;

FIG. 8 is a cross-sectional view of a prior art coil structure made using round wire winding;

fig. 9 is a sectional view of the coil structure obtained by winding flat copper wires according to the present invention.

Detailed Description

As a background, the conventional transformer cannot achieve both high power and small volume.

In order to solve the above technical problem, an embodiment of the utility model provides a transformer, include: a magnetic column; the primary winding comprises at least one coil structure connected in series, each coil structure is wound on the magnetic pole and is formed by winding a flat copper wire with the surface covered with an insulator, and the coil structure comprises a plurality of layers of coils along the extension direction of the magnetic pole; a secondary winding including a coil structure wound around the magnetic pillar; wherein each coil structure in the primary winding and the secondary winding is supported by adjacent other coil structures.

The big advantage of flat type copper wire rod intensity is utilized to this embodiment scheme for the transformer that the coiling obtained need not extra bearing structure, makes miniaturized design possible, and with low costs. Furthermore, the flat copper wire has high utilization rate, and the coils are arranged more tightly, so that the direct current resistance and the leakage inductance can be reduced, and the power is improved. Furthermore, the flat copper wire is formed independently, and the winding is convenient. Furthermore, because no plastic skeleton is needed, the heat dissipation is better. Therefore, the transformer can better achieve both high power and small size.

Next, embodiments of the present invention will be described in detail with reference to the drawings. Like parts are designated by like reference numerals throughout the several views. The embodiments are merely illustrative, and it is needless to say that partial substitutions or combinations of the structures shown in the different embodiments may be made. In the modification, descriptions of common matters with embodiment 1 are omitted, and only different points will be described. In particular, the same operational effects produced by the same structures are not mentioned one by one for each embodiment.

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

(example 1)

Fig. 1 is a schematic diagram of a transformer 1 according to a first embodiment of the present invention. Fig. 2 is an exploded view of the transformer 1 shown in fig. 1. Fig. 3 is a schematic perspective view of the primary winding of fig. 1. Fig. 4 is a top view of the primary winding shown in fig. 3. Fig. 5 is a side view of the primary winding shown in fig. 3.

Specifically, referring to fig. 1 and 2, the transformer 1 may include: magnetic cylinder 10, bottom plate 14 and cover plate 15. Along the extending direction (shown as z direction) of the magnetic cylinder 10, a bottom plate 14 and a cover plate 15 may be respectively located at both ends of the magnetic cylinder 10.

For convenience of description, the extending directions of the two sides connected to the base plate 14 on a plane perpendicular to the z direction are referred to as the x direction and the y direction, respectively.

Further, the edges of the cover plate 15 and the base plate 14 in the y direction may be bent toward each other in the z direction. And, the bent section of the cover plate 15 abuts against the bent section of the bottom plate 14 to close both sides of the magnetic pillar 10 in the y direction, so as to form a closed magnetic flux loop on the plane formed by the y direction and the z direction.

Further, the magnetic column 10, the bottom plate 14 and the cover plate 15 are all made of magnetic materials.

Further, the magnetic cylinder 10 may include two segments and be respectively connected to a side of the base plate 14 facing the cover plate 15 and a side of the cover plate 15 facing the base plate 14. When assembling, the cover plate 15 and the bottom plate 14 are buckled, so that the two sections of the magnetic columns 10 are contacted. Further, an air gap may exist at the junction of the two sections of the magnetic pillar 10.

Further, the transformer 1 may further include a bracket 16, and the bracket 16 may be sleeved on the magnetic pole 10 and extend from two sides of the magnetic pole 10, which are not closed. The protruding bracket 16 may be provided with a stub 160, which stub 160 may be used to fix the taps of the primary winding 11 and the secondary winding 12. Each winding comprises two taps, namely a current leading-in end and a current leading-out end.

Further, the transformer 1 may further include: the primary winding 11 comprises at least one coil structure 13 connected in series, and each coil structure 13 is respectively wound on the magnetic column 10 and is formed by winding a flat copper wire with the surface covered with an insulator; the secondary winding 12 comprises one or more coil structures 13, and each coil structure 13 is wound on the magnetic column 10 and is formed by winding a flat copper wire with the surface covered with an insulator; wherein each coil structure 13 of the primary winding 11 and the secondary winding 12 is supported by adjacent other coil structures 13.

The present embodiment refers to a portion between two taps of the current leading-out terminal and the current leading-in terminal as the primary winding 11 or the secondary winding 12. Thus, embodiment 1 is shown with one primary winding 11 and multiple secondary windings 12, and each secondary winding 12 includes one coil structure 13.

The whole formed by the primary winding 11 and the secondary winding 12 is located between the bracket 16 and the cover plate 15, and is supported and fixed on the base plate 14 by the bracket 16.

Further, the bracket 16 has an opening 161 for the magnetic column 10 to pass through.

The winding direction of each coil structure 13 of the primary winding 11 is the same. The winding directions of the coil structures 13 of the secondary windings 12 are the same.

It should be noted that the illustration is only an exemplary illustration of the coil structure 13, and in practical applications, a person skilled in the art may adjust the number of coil turns and the winding density of the coil structure 13 as required.

Further, the number of coil turns and/or the winding density of each coil structure 13 of the primary winding 11 may be the same. Similarly, the number of coil turns and/or the winding density of each coil structure 13 of the secondary winding 12 may be the same.

Further, the flat copper wire is a film-covered wire, which sufficiently meets the requirement of high-voltage insulation, so that an insulating layer is not required to be additionally arranged between the adjacent coil structures 13. In other words, in the embodiment, along the z-direction, the coil structure 13 located below supports the coil structure 13 located above, without interposing a plastic skeleton between adjacent coil structures 13. Therefore, the whole structure of the transformer 1 is more compact, and the miniaturization design of devices is favorably realized.

Further, the coil structure 13 is obtained by winding a flat copper wire whose surface is covered with an insulator in a flat winding manner.

Further, the plurality of coil structures 13 of the primary winding 11 are arranged in the z direction and wound around the magnetic pole 10, respectively. Similarly, the coil structures 13 of the secondary windings 12 are also arranged in the z-direction and are respectively wound around the magnetic poles 10.

Further, referring to fig. 3 to 5, at least a portion of the plurality of coil structures 13 of the primary winding 11 may be formed by winding a same flat copper wire. Because the cutting is not needed in midway, the adjacent coil structures 13 are not connected in series by welding, the short circuit risk is small, and the insulation and the coupling are good.

It should be noted that although fig. 3 illustrates 2 coil structures 13, in practical applications, a person skilled in the art may adjust the number of coil structures 13 included in a single primary winding 11 as needed.

Further, with continued reference to fig. 3-5, for each coil structure 13 in the primary winding 11, the coil structure 13 may include a multi-turn coil 130 on the same plane. For example, the coil structure 13 may include 2 coils 130 on the same plane, wherein the outer coil is called as an outer coil 131 on the outer side, and the inner coil is called as an inner coil 132 on the inner side.

Further, referring to fig. 4, the diameter D1 of the inner coil 132 may be 18 to 22 mm, and the diameter D2 of the outer coil 131 may be 41 to 45 mm. The width W of the coil 130 may be about 5 mm. The tap-to-coil length X of the coil structure 13 may be around 30 mm.

Further, referring to fig. 3 to 5, along the extending direction of the magnetic pillar 10 (i.e., the z direction in fig. 1), the coil structure 13 includes a multi-layer coil 130. For example, the coil structure 13 may include 2 layers of coils 130, wherein each layer of coils 130 includes an outer coil 131 and an inner coil 132.

For two adjacent layers of coils 130 of the same coil structure 13, the inner coil 132 of the coil 130 of the previous layer is connected with the inner coil 132 of the coil 130 of the next layer.

For any adjacent two coil structures 13 of the plurality of coil structures 13 of the primary winding 11, the outer coil 131 of one of the adjacent two coil structures 13 is connected to the outer coil 131 of the other of the adjacent two coil structures 13.

That is, for the adjacent coil structures 13, the connection line 133 connecting one of them is extended from the outer coil 131 of the other one thereof and extended to the outer coil 131 thereof.

Because the wire hardness of the flat copper wire is high, the flat copper wire does not need to be supported, and the connecting wire 133 extends out of the outer ring of one coil structure 13 and extends to the outer ring of the next coil structure 13. Finally, the winding mode of 1 layer of the flat copper wire with multiple circles and 1 piece of the flat copper wire with multiple layers is realized.

Further, looking down on the primary winding 11, the connecting wire 133 is located outside the area covered by the outer coil 131 to effectively connect the two adjacent layers of coil structures 13.

Further, referring to fig. 1 and 2, each secondary winding 12 includes a coil structure 13, and in the same plane, the coil structure 13 may include a coil 130 of one turn, and the coil structure 13 may include a layer of the coil 130 along the extending direction of the magnetic pillar 10 (i.e., the z direction in fig. 1). The specific structure of the single-layer single-turn secondary winding 12 according to this embodiment can be seen with reference to fig. 7.

Further, the secondary side of the transformer 1 may include a first tap a, a second tap b, and a third tap c, and for any two adjacent or close secondary windings 12 of the plurality of secondary windings 12, the current input end of one of the two adjacent or close secondary windings 12 is the second tap b, and the current output end is the first tap a, and the current input end of the other of the two adjacent or close secondary windings is the second tap b, and the current output end is the third tap c.

In other words, in the present embodiment, the primary side of the transformer 1 has a 2-tap structure, and the secondary side of the transformer 1 has a 3-tap structure.

When the transformer 1 is in operation, any two adjacent or nearby secondary windings 12 are not in operation simultaneously. Specifically, the first half-cycle current flows from the first tap a into the second tap b, and the second half-cycle current flows from the third tap c into the second tap b. The currents of any two adjacent or nearby secondary windings 12 do not interfere with each other. Thereby, the number of output rectifiers on the secondary side of the transformer 1 can be reduced from 4 to 2.

Further, a plurality of the secondary windings 12 are uniformly arranged between adjacent coil structures 13 of the primary winding 11. In other words, the plurality of secondary windings 12 and the plurality of coil structures 13 of the primary winding 11 are disposed so as to be interposed therebetween in the extending direction (illustrated z direction) of the magnetic pole 10. Therefore, the primary winding and the secondary winding are designed to be wound in an overlapped mode, so that the primary winding 11 and the secondary winding 12 are closer, and the coupling effect is better.

For example, along the extending direction (illustrated z direction) of the magnetic pillar 10, one coil structure 13 of the primary winding 11, one secondary winding 12, and so on may be stacked.

Further, referring to fig. 5, the thickness Y of the coil 130 (i.e., the thickness of the flat copper wire) is about 0.7 mm, and the single coil structure 13 includes two layers of the coil 130. At this time, for any adjacent two coil structures 13 of the plurality of coil structures 13 of the primary winding 11, the spacing L between the adjacent two coil structures 13 may be 1.5 to 2.3 mm. Thereby, it is ensured that at least a single secondary coil 12 can be inserted into the space L by reserving a sufficient gap to form the effect of the overlapping winding.

Further, a plurality of the secondary windings 12 may be connected in series or in parallel.

By last, adopt this embodiment scheme, utilize the big advantage of flat type copper wire rod intensity for the transformer 1 that the coiling obtained need not extra bearing structure, makes miniaturized design possible, and with low costs. Furthermore, the flat copper wire has high utilization rate, and the coils are arranged more tightly, so that the direct current resistance and the leakage inductance can be reduced, and the power is improved. Furthermore, the flat copper wire is formed independently, and the winding is convenient. Furthermore, because no plastic skeleton is needed, the heat dissipation is better. Therefore, the transformer 1 of the present embodiment can achieve both high power and small size.

In one variation, at least a portion of the plurality of secondary windings 12 may be multi-layered and multi-turn per layer. That is, the secondary winding 12 may adopt the structure of the primary winding 11 shown in fig. 3 to 5.

Further, the number of coil structures 13 included in different secondary windings 12 may be the same or different.

In a variant, the taps of the primary winding 11 and the taps of the secondary winding 12 may be located on both sides of the transformer 1 in the y-direction. Alternatively, the taps of the primary winding 11 may extend out of the transformer 1 in the x-direction, and the taps of the secondary winding 12 may extend out of the transformer 1 in the y-direction. And vice versa.

In a variation, the plurality of coil structures 13 of the primary winding 11 may be wound separately and then connected in series by a jumper wire.

In a variant, the primary winding 11 may be located entirely above or below the secondary winding 12, in the z direction.

In one variant, for a plurality of coil structures 13 of the primary winding 11, the number of coil turns and/or the winding density of a part of the coil structures 13 may be different from the number of coil turns and/or the winding density of the remaining part of the coil structures 13.

Similarly, when the secondary winding 12 includes a plurality of coil structures 13, the number of turns and/or the winding density of a part of the coil structures 13 may be different from those of the rest of the coil structures 13.

In one variation, the plurality of secondary windings 12 may be non-uniformly disposed between adjacent coil structures 13 of the primary winding 11. For example, in the extending direction (illustrated z direction) of the magnetic pillar 10, one coil structure 13, two secondary windings 12 of the primary winding 11, two coil structures 13 of the primary winding 11, one secondary winding 12, and so on may be stacked.

(example 2)

Fig. 6 is a partial schematic view of a transformer 2 according to a second embodiment of the present invention. To more clearly show the structure of the transformer 2 according to the present embodiment, fig. 6 shows only the structure of the primary winding 11 and the secondary winding 22 of the transformer 2.

In the present embodiment, the difference from the above embodiment 1 is mainly that the secondary winding 22 includes a plurality of coil structures 13, and is wound around the magnetic pole 10 in fig. 1 along the z direction by the same flat copper wire.

Specifically, in the present embodiment, the number of the primary windings 11 and the secondary windings 22 is one, and each includes a plurality of coil structures 13 connected in series. The specific structure of each coil structure 13 may be as shown in fig. 3 to 5 in embodiment 1.

Further, at least a portion of the plurality of coil structures 13 of the secondary winding 22 may be uniformly disposed between adjacent coil structures 13 of the primary winding 11.

In other words, the coil structure 13 of the secondary winding 22 and the coil structure 13 of the primary winding 11 are stacked one on top of the other with the coil structure 13 interposed therebetween in the extending direction (the illustrated z direction) of the magnetic pillar 10.

Therefore, the primary winding and the secondary winding are designed to be wound in an overlapped mode, so that the primary winding 11 and the secondary winding 12 are closer, and the coupling effect is better.

Further, it is assumed that the thickness Y of the coil (i.e., the thickness of the flat copper wire) is about 0.7 mm, and the single coil structure 13 includes two layers of coils 130. At this time, for any adjacent two coil structures 13 of the plurality of coil structures 13 of the primary winding 11, the spacing L between the adjacent two coil structures 13 may be 1.5 to 2.3 mm. Thereby, it is ensured by reserving a sufficient gap that the single coil structure 13 of the secondary coil 22 can be inserted into the space L to form the effect of the overlapping winding shown in fig. 6.

Similarly, for any two adjacent coil structures 13 in the plurality of coil structures 13 of the secondary winding 22, the distance L between the two adjacent coil structures 13 may be 1.5 to 2.3 mm for the coil structure 13 of the primary winding 11 to be inserted.

Further, the plurality of coil structures 13 of the primary winding 11 and the plurality of coil structures 13 of the secondary winding 22 may be uniformly overlap-wound. For example, referring to fig. 6, in the z-direction, there may be one coil structure 13 of the primary winding 11, one coil structure 13 of the secondary winding 22, and so on, stacked one above the other.

In one variation, the plurality of coil structures 13 of the primary winding 11 and the plurality of coil structures 13 of the secondary winding 22 may be non-uniformly overlap-wound. For example, in the z-direction, there may be one coil structure 13 of the primary winding 11, three coil structures 13 of the secondary winding 22, two coil structures 13 of the primary winding 11, one coil structure 13 of the secondary winding 22, and so on, stacked one above the other.

Accordingly, the pitch L of adjacent coil structures 13 may be appropriately adjusted to ensure that a sufficient number of coil structures 13 of another winding can be inserted therein.

(example 3)

Fig. 7 is an exploded view of a transformer 3 according to a third embodiment of the present invention.

In the present embodiment, the difference from the above-described embodiment 1 is mainly that the number of the primary windings 11 and the secondary windings 12 is plural, and the plural secondary windings 12 are non-uniformly arranged between the adjacent primary windings 11.

In particular, each primary winding 11 comprises at least one coil structure 13.

For any primary winding 11, when the primary winding 11 includes a plurality of coil structures 13, the plurality of coil structures 13 are connected in series as shown in fig. 1.

A plurality of the primary windings 11 may be connected in parallel or in series.

For example, referring to fig. 7, along the extending direction (illustrating the z direction) of the magnetic pillar 10, two secondary windings 12, one primary winding 11, four secondary windings 12, one primary winding 11, and two secondary windings 12 may be wound in this order.

Further, along the extending direction of the magnetic pillar 10, a plurality of the secondary windings 12 may be disposed between the adjacent primary windings 11 in a ratio of 1:2: 1.

Alternatively, the number of the primary windings 11 is one, and a plurality of the secondary windings 12 may be arranged between the adjacent coil structures 13 of the primary windings 11 in a ratio of 1:2: 1.

In one variation, the plurality of primary windings 11 may be uniformly disposed between adjacent secondary windings 12.

In a variant, it is possible that the number of primary windings 11 is plural and the number of secondary windings 12 is one. Here, each of the plurality of secondary windings 11 may adopt the structure shown in fig. 3 to 5, and the secondary winding 12 may adopt the structure shown in fig. 6.

Further, the plurality of primary windings 11 are uniformly or non-uniformly arranged between adjacent coil structures 13 of the secondary winding 12.

Experiments show that by adopting the transformer 1 (or the transformer 2) of the embodiment, the direct current resistance is reduced by 28%, the leakage inductance is reduced by 50%, and the overall power density can be increased by 28%.

Further, comparing fig. 8 and fig. 9, the arrangement compactness of the copper wires 21 in the coil structure obtained by winding the round wires is significantly lower than the arrangement compactness of the copper wires 31 in the coil structure obtained by winding the flat copper wires.

Specifically, in the case of the coil structure obtained by winding the round wire as shown in fig. 8, since the round wire is made by wrapping a plurality of wires with three layers of insulators (respectively denoted by 22a, 22b, and 22c in the drawing), gaps inevitably exist between the wires (i.e., the copper wires 21) and between the wires and the innermost layer of the insulator 22 a. And when the coil structure is wound by adopting the round wires, a gap is inevitably formed between the adjacent round wires. Therefore, the whole structure of the coil structure obtained by winding the round wire is sparse and not compact.

In the case of a coil structure wound with a copper wire 31 such as a flat copper wire shown in fig. 9, the gap between the flat copper wire and the outer three-layer insulator (indicated by 32a, 32b, and 32c in the drawing) is almost zero due to the shape of the flat copper wire. And when the flat copper wire is adopted to wind the coil structure, the gap between the adjacent flat copper wires is also approximately zero. Therefore, the coil structure obtained by winding the flat copper wire has a compact overall structure and high space utilization rate.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.

Description of the reference numerals

1. 2, 3 transformer

10 magnetic pole

11 primary winding

12. 22 secondary winding

13 coil structure

130 coil

131 outer ring coil

132 inner coil

133 connecting line

14 bottom plate

15 cover plate

16 bracket

160 pile part

161 hole

21. 31 copper wire

22a, 22b, 22c, 32a, 32b, 32c insulation

D1 diameter of inner coil

D2 diameter of outer coil

a first tap

b second tap

c third tap

Width of W coil

Tap to coil length of an X-coil structure

Thickness of Y coil

L spacing of adjacent coil structures

z direction of extension of magnetic column

x direction of extension of one side of the base plate

y direction of extension of the other side of the base plate

Claims (11)

1. A transformer, comprising:

a magnetic column;

the primary winding comprises at least one coil structure connected in series, each coil structure is wound on the magnetic pole and is formed by winding a flat copper wire with the surface covered with an insulator, and the coil structure comprises a plurality of layers of coils along the extension direction of the magnetic pole;

a secondary winding including a coil structure wound around the magnetic pillar;

wherein each coil structure in the primary winding and the secondary winding is supported by adjacent other coil structures.

2. The transformer of claim 1, wherein the secondary winding comprises a coil structure wound from flat copper wire covered with insulation.

3. The transformer of claim 2, wherein for each coil structure in the secondary winding, in the same plane, the coil structure comprises a multi-turn coil.

4. The transformer of claim 2, wherein the secondary winding comprises a plurality of coil structures, and at least a portion of the coil structures are wound from the same flat copper wire.

5. The transformer according to claim 1 or 2, wherein the coil structure is obtained by flat winding a flat copper wire covered with an insulator.

6. The transformer of claim 1 or 2, wherein the secondary winding comprises a plurality of coil structures, and at least a portion of the plurality of coil structures are uniformly or non-uniformly disposed between adjacent coil structures of the primary winding.

7. The transformer of claim 1, wherein at least a portion of the plurality of coil structures of the primary winding are wound from the same flat copper wire.

8. The transformer of claim 1, wherein for each coil structure in the primary winding, the coil structure comprises a multi-turn coil in the same plane.

9. The transformer according to claim 3 or 8, wherein the multi-turn coil comprises an outer turn coil and an inner turn coil, and for two adjacent turns of the coil structure, the inner turn coil of the previous turn is connected to the inner turn coil of the next turn.

10. The transformer of claim 3 or 8, wherein the multi-turn coil comprises an outer turn coil and an inner turn coil, and wherein for any two adjacent ones of the plurality of coil structures of the primary winding or for any two adjacent ones of the plurality of coil structures of the secondary winding, the outer turn coil of one of the two adjacent coil structures is connected to the outer turn coil of the other of the two adjacent coil structures.

11. The transformer of claim 1 or 2, wherein the number of secondary windings is plural, and the plural secondary windings are uniformly or non-uniformly arranged between adjacent coil structures of the primary winding.

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