CN2909480Y - Converter's Transformer - Google Patents

Abstract

The utility model relates to a transformer of transverter, it contains: a first bobbin for winding a secondary side winding coil; the second bobbin is used for winding the primary side winding coil, two ends of the outer part of the body of the second bobbin are respectively provided with a guide frame for winding partial coil leads of the primary side winding coil, and the second bobbin is arranged in parallel with the first bobbin; the iron core groups are correspondingly jointed with each other and penetrate through the hollow parts of the first and second wire frames to form a main magnetic circuit, so that the guide frames of the second wire frame are relatively positioned at two ends of the first wire frame, the primary side winding coil and part of coil wires can be indirectly and directly coupled relative to the side edge and two ends of the secondary side winding coil, the integral coupling voltage ratio is improved, and the leakage inductance of the transformer can be relatively increased under the spaced configuration of the first and second wire frames, so that the winding area and the material of the primary and secondary side winding coils are effectively reduced.

Description

Converter's Transformer

technical field

The utility model relates to a transformer of a converter.

Background technique

China Taiwan Province Patent Publication Certificate No. M269553 "Converter Transformer Structure Improvement" new patent case discloses a primary side winding coil and a secondary side winding coil that are relatively wound on a bobbin frame. The outer two ends of the winding frame are provided with iron cores opposite to the inside to form a transformer with a complete structure, so that the coils of the primary and secondary side windings are coupled to each other on the same winding frame to have a In addition to better induction efficiency, it also achieves the effect of relatively improving its coupling voltage ratio;

However, although the structure disclosed above can make the transformer obtain better induction efficiency, however, due to its use method, the primary and secondary side winding coils are all wound on the same bobbin, so that if it depends on the transformer However, when the leakage inductance needs to be increased, it is necessary to relatively increase the number of turns of the primary and secondary side winding coils on the above-mentioned bobbin, so as to achieve the required increased leakage inductance. It is bound to cause an increase in the winding area and material of the primary and secondary winding coils;

In addition, another example is China Taiwan Province Patent Gazette No. 507224 "Transformer Used in Inverter" invention patent case, which discloses a method mainly on two independent bobbins, which are respectively wound with a primary side winding coil and a Secondary side winding coils, and the two bobbins are arranged in parallel without direct contact, so that by expanding the spacing between the primary and secondary side winding coils, it is not necessary to increase the first 1. The number of turns of the secondary side winding coil can relatively increase the required leakage inductance. However, although the disclosed structure can make the transformer obtain better leakage inductance, in the actual application process, Because of the above-mentioned primary and secondary side winding coils, when the coils are coupled to each other, the magnetic flux often diverges in the air, resulting in poor induction efficiency, resulting in a decrease in the coupling voltage ratio of the transformer;

Contents of the invention

In order to get rid of the above disadvantages, the purpose of this utility model is to provide a converter transformer that can relatively increase its leakage inductance and relatively increase its coupling voltage ratio.

For achieving the above object, the technical scheme that the utility model adopts is:

A transformer for a converter, which includes a first wire frame, a second wire frame and a core group;

In the first wire frame, one or more sets of secondary side winding coils are wound on the outside of the main body, and a hollow part for the iron core is provided inside the main body;

The second wire frame is arranged in parallel with the first wire frame, and one or more sets of primary side winding coils are wound on the outside of the body, and opposite ends of the body extend respectively. The guide frames located at both ends of the first wire frame, the guide frames are respectively provided with at least one winding groove for winding part of the coil wires of the primary side winding coil, and the second wire frame Relative to the inside of the body and the winding groove of the guide frame, there are hollow parts for setting the iron core;

The core group is composed of the joint of the first core part and the second core part, and has at least one pair of parallel and spaced opposite magnetic circuits, which are engaged with each other correspondingly, and are relatively penetrating and accommodated in the first core part. The wire frame and the hollow part of the second wire frame and its guide frame constitute a main magnetic circuit.

A plurality of partitions are arranged at intervals on the first bobbin relative to the winding range of the secondary winding coil.

The outer two ends of the body of the first wire frame are provided with socket portions with notches in at least one direction.

The outer periphery of the body of the first wire frame and the second wire frame is provided with a plurality of lead terminals.

One or more grooves are provided on the first wire frame opposite to the partition.

The groove part can also be used for winding part of the coil wires of the primary winding coils in series or parallel connection on the second bobbin to wind one or more sets of the secondary winding coils.

The first wire frame and the second wire frame can be relatively connected with another or more than one first wire frame and second wire frame as a whole.

One or more sets of secondary winding coils can be wound on the second bobbin at the same time.

A plurality of partitions are arranged at intervals on the second bobbin frame relative to the coil winding range of the primary winding.

The first wire frame and the second wire frame are provided with one or more covers for the combination of the first wire frame and the second wire frame.

A first opening is provided on one side of the cover body, and second openings are oppositely provided on two side surfaces of the cover body.

The cover can be combined with the one or more first wire racks and one or more second wire racks.

The inside of the cover is provided with at least one rib as a combination and fixed wire frame.

The two ends of the body of the second wire frame, the windings in the winding slots on the guide frame extending vertically outwards, can be connected in series or parallel to the second wire frame via external lines to wind one or a group of them. above the secondary side winding coil.

The two ends of the body of the first wire frame can respectively extend vertically outwards to provide guide frames for setting the iron core.

The two ends of the body of the first wire frame can respectively be used as partial coil winding slots for the primary side winding coils.

The core group can also be composed of the first core part and the second core part, having at least one pair, facing each other at intervals in parallel, and penetrating into the core in the hollow part of the first wire frame and the core in the hollow part of the second wire frame. The shape of the iron core varies.

The core group can also be composed of the first core part and the second core part, having at least one pair, facing each other at intervals in parallel, and penetrating into the core in the hollow part of the first wire frame and the core in the hollow part of the second wire frame. The cores have substantially the same shape.

The iron core group can also be composed of the first iron core part and the second iron core part joined together, having at least one pair or more, facing each other at intervals in parallel, and the height of the iron core penetrating into the hollow part of the first wire frame is smaller than the height of the core penetrating into the second wire frame The core height in the hollow part.

The utility model that adopts above-mentioned technical scheme is done a comparative analysis with commonly used scheme as follows:

Common deficiencies:

1. It is impossible to have the characteristics of relatively increasing the leakage inductance and coupling voltage ratio at the same time.

2. As a result, the winding area and material of the primary and secondary winding coils increase.

3. Electromagnetic interference affects the original electrical characteristics of the converter transformer.

The utility model advantage:

1. At the same time, it can have the characteristics of relatively increasing its leakage inductance and coupling voltage ratio.

2. Effectively reduce the winding area and material of the primary and secondary winding coils.

3. It can improve the situation of electromagnetic interference.

Description of drawings

Fig. 1 is the exploded schematic view of the first application embodiment of the present utility model;

Fig. 2 is a combined schematic diagram of the first application embodiment of the present utility model;

Fig. 3 is an exploded schematic diagram of a second application embodiment of the present invention;

Fig. 4 is a combined schematic diagram of a second application embodiment of the present invention;

Fig. 5 is a schematic diagram of a third application embodiment of the present invention;

Fig. 6 is an exploded schematic view of a fourth application embodiment of the present invention;

Fig. 7 is a combined schematic view of the fourth application embodiment of the present invention;

Fig. 8 is a schematic diagram of a fifth application embodiment of the present invention.

Explanation of reference signs: 1 first wire frame; 11 partition; 12 hollow portion; 13 socket; 14 lead terminal; 15 groove; 16 guide frame; 2 second wire frame; 21 guide frame; ; 212 hollow part; 22 hollow part; 23 lead terminal; 3 core group; 31 first core part; 32 second core part; 4 primary winding coil; 41 coil wire; 5 secondary winding coil; 6 cover body; 61 first opening; 62 second opening; 63 convex rib.

Detailed ways

In order to make it easier for your examiners to understand other features and advantages of the utility model and the effects achieved by it, the utility model is hereby combined with the accompanying drawings, and the details are as follows:

Please refer to Fig. 1 and Fig. 2, which are the first application embodiment of the present utility model, which provides a transformer for a converter, which includes a first wire frame 1, a second wire frame 2 and a core group 3, of which:

The first bobbin 1 is wound with one or more sets of secondary side winding coils 5 on the outside of its body, and within the winding range of the secondary side winding coils 5, there is a matching interval There are a plurality of partitions 11 for the secondary side winding coils 5 to be straddled and wound in sequence, and a hollow part 12 for setting the iron core is provided inside the body, and at least one direction gap is provided at both ends of the body The sleeve part 13, and a plurality of lead terminals 14 for the secondary side winding coil 5 to be wound and connected to the external circuit are provided on the outer periphery of the body, and on the outside of the body, it is opposite to the partition 11 Between, with at least one groove part 15;

The second wire frame 2 is wound with one or more sets of primary side winding coils 4 on the outside of its body, and vertically extending at both ends of the outside of the body with respect to the first wire frame 1 . Both ends, and the guide frame 21 that can be engaged with the sleeve portion 13 of the first wire frame 1, the two guide frames 21 are respectively provided with at least one winding groove 211, and are provided for another time. Part of the coil wires 41 of the side winding coil 4 are wound, and the second wire frame 2 is respectively provided with hollow parts 22 and 212 for setting the iron core relative to the inside of the body and the winding groove 211 of the guide frame 21 , let the hollow portion 212 of the guide frame 21 correspond to the hollow portion 12 of the first wire frame 1, and the second wire frame 2 is provided with a plurality of wire frames on the outer periphery of its body for supplying The primary side winding coil 4 is wound with the lead terminal 23 connected to the external circuit, and the second wire frame 2 is arranged in parallel with the first wire frame 1;

The core group 3 is composed of the first core part 31 and the second core part 32, and has at least one pair of magnetic circuits facing each other in parallel and spaced apart. The first wire frame 1 and the hollow parts 12, 22, 212 of the second wire frame 2 and its guide frame 21 constitute a main magnetic circuit;

In this way, through the second wire frame 2 and its guide frame 21 being relatively located on the side and both ends of the first wire frame 1, the primary side winding coil 4 can be relatively located on the secondary side. The sides of the side winding coil 5 are used for indirect mutual coupling, and the partial coil wires 41 of the primary side winding coil 4 are relatively located at the two ends of the secondary side winding coil 5 for direct mutual coupling, so that By increasing the inductance of both the primary side winding coil 4 and the secondary side winding coil 5, the coupling voltage ratio of the overall transformer can be relatively improved, and at the same time, the primary side winding coil 4 can be used and the secondary side winding coil 5 are arranged at corresponding intervals, so that it is used to adjust the corresponding distance between the primary side winding coil 4 and the secondary side winding coil 5, which can be compared according to the application requirements of the transformer. Change the leakage inductance required to control it, so as to eliminate the fact that general transformers cannot have the characteristics that can relatively improve their coupling voltage ratio and leakage inductance, thereby effectively reducing the difference between the primary side winding coil 4 and the secondary side winding coil 5. Winding area and material; In addition, the utility model also can be by relatively increasing or reducing the winding number of coil wire 41 of described, to reach the required leakage inductance of controlling and deploying its overall transformer;

Please refer to Fig. 3 and Fig. 4, which are schematic diagrams of the second application embodiment of the present utility model, wherein the first wire frame 1 and the second wire frame 2 can be compared with one or more than one other according to the requirements of use. The first wire frame 1 and the second wire frame 2 are connected as a whole, and the first wire frame 1 and the second wire frame 2 are formed with the same difference, and as mentioned above, the first iron core part 31 and the second iron core can be passed through in the same way. Parts 32 are engaged with each other correspondingly, and relatively penetrated and accommodated in the first wire frame 1 and the second wire frame 2 to form the overall main magnetic circuit. In this way, the same passes through the second wire frame 2 Its guide frame 21 is relatively located on the side and both ends of the first wire frame 1 (and between the coil winding range of the first wire frame 1), so that the primary side winding coil 4 and part of the coil The wire 41 can be relatively located on the side and both ends of the secondary winding coil 5, that is, at the same time, it is located at the two ends within the overall winding range of the secondary winding coil 5 and its coil winding arrangement. Within the range, indirect and direct coupling can be used to increase the overall coupling voltage ratio in the same way, and at the same time, the leakage inductance of the transformer can be relatively increased through the corresponding interval configuration of the first wire frame 1 and the second wire frame 2 Efficacy characteristics;

In addition, please refer to FIG. 5 , which is a schematic diagram of a third application embodiment of the present invention, wherein, the present invention is further provided with a group of windings or windings of the same layer on the outside of the body of the second wire frame 2 at the same time. More than one primary side winding coil 4 passes through the second bobbin 2, and its primary side winding coil 4 is relatively inductively coupled with the secondary side winding coil 5 without a voltage dividing partition to achieve a step-down In addition, through the relative inductive coupling between the primary side winding coil 4 and the secondary side winding coil 5 used for voltage division on the second wire frame 2 and the first wire frame 1, the characteristic of boosting voltage can be achieved , In this way, the utility model can not only have the above-mentioned effects, but also have the characteristics of step-down and step-up (however, the details of the secondary side winding coil 5 are wound in layers, which is not the practical method of the present invention. Novel main technical features, so do not go into details here, in the illustration, it is indicated by mark 5);

Furthermore, the aforementioned iron core group 3 may also be formed by joining the first iron core portion 31 and the second iron core portion 32, having at least one pair or more parallel and spaced opposite and substantially equal cross-sectional area thicknesses and extending to the first wire frame. Magnetic circuits of different heights with the second wire frame (such as: rectangle, circle, ellipse, etc.), which are correspondingly engaged with each other, and are relatively extended and accommodated in the first wire frame 1 and the second wire frame 2 and the hollow parts 12, 22, 212 of the guide frame 21, and then constitute the main magnetic circuit, so that through the relative inductive coupling of the magnetic circuit of the core group 3, the purpose of controlling the leakage inductance required for the deployment of the overall transformer is achieved ;

Please refer to Fig. 6 and Fig. 7, which are schematic diagrams of the fourth application embodiment of the present utility model, wherein, as an example from the embodiment of Fig. 1 and Fig. 3, the first wire frame 1 can be matched with At least one cover body 6 is sleeved, and a first opening 61 is provided on one side of the cover body 6 corresponding to the positions of the guide frames 21 of the two second wire frames 2, for the The guide frame 21 of the second wire frame 2 is extended and combined with the first wire frame 1, and the two ends of the cover body 6 are corresponding to the first wire frame 1 and the second wire frame. The hollow parts 12 and 212 of the guide frame 21 of the second wire frame 2 are oppositely provided with a second opening 62, so that the first core part 31 and the second core part 32 can relatively pass through the second part of the cover body 6. Opening 62, so as to relatively penetrate to the hollow parts 12, 22, 212 of the first wire frame 1, the second wire frame 2 and its guide frame 21, and the inside of the cover body 6 is provided with at least More than one rib 63 is used to engage with the groove portion 15 of the first wire frame 1, so that when the first wire frame 1 is assembled with the cover body 6, the The first wire frame 1 and the second wire frame 2 relatively increase their coupling voltage ratio and leakage inductance while simultaneously improving their insulation characteristics;

Please refer to FIG. 8 , which is a schematic diagram of a fifth application embodiment of the present invention, wherein, the two ends of the body of the first wire frame 1 are respectively vertically extended outwards and provided with guide frames 16 for setting the iron core. The first iron core part 31 and the second iron core part 32 of the iron core group 3 described above can be matched to form U (or C) and I-shaped iron cores joined together. When assembled, the first iron core part 31 is correspondingly arranged on the guide frame 16 of the first wire frame 1, and secondly, the second iron core part 32 is correspondingly arranged in the hollow portion 12 of the first wire frame 1 and is connected with the first wire frame 1. A core part 31 is joined together, and on the first core part 31 corresponding to the secondary side winding coil 5 of the first bobbin 1, one or more sets of primary side winding coils are wound. 4, and said primary side winding coil 4 is relative to said secondary side winding coil 5 at its winding range or at both ends, straddling the coil wire 41 wound with at least one turn or more, so that through the primary side winding The coil 4 and part of the coil wires 41 are indirectly and directly coupled with respect to the side and both ends of the secondary winding coil 5, so as to increase the overall coupling voltage ratio at the same time, and then through the corresponding interval configuration of the first and second wire frames, It can relatively increase the leakage inductance of its transformer, so that the winding area, material and wire frame cost of the primary and secondary side winding coils can be effectively reduced;

Therefore, the technical characterictic of the present utility model is to do the indirect mutual coupling through the side of the said primary side winding coil 4 relative to the said secondary side winding coil 5, thereby relatively increasing its required Leakage inductance, secondly, through the partial coil wire 41 of the primary side winding coil 4, which is relatively located at the two ends of the secondary side winding coil 5, for direct mutual coupling, so as to relatively increase its coupling voltage ratio excluding that common transformers cannot have the characteristics of relatively increasing the coupling voltage ratio and leakage inductance, so that the winding area and materials of the primary winding coil 4 and the secondary winding coil 5 can be effectively reduced.

The above description is a specific description of a feasible embodiment of the utility model, and the described embodiment is not intended to limit the patent scope of the utility model, and any equivalent implementation or modification that does not depart from the technical spirit of the utility model, should be included in the patent scope of this case.

Claims (19)

1. the transformer of a converter is characterized in that: it comprises one first coil holder, one second coil holder and a group unshakable in one's determination;

Described first coil holder is the secondary side winding coil that is arranged with a group or more on its body exterior, and its body interior is provided with the hollow bulb that can supply iron core to be provided with;

Described second coil holder, be to be parallel corresponding setting with described first coil holder, it on its body exterior the first side winding coil that is arranged with a group or more, and its body two ends are extended respectively and are provided with the saddle that is positioned at the described first coil holder two ends relatively, be to be respectively equipped with at least more than one can supply the winding slot of the coil sections lead winding of first side winding coil on the described saddle, described again second coil holder is with respect to the winding slot of its body interior and saddle thereof, and being respectively equipped with can be for the hollow bulb that is provided with unshakable in one's determination;

Described group unshakable in one's determination, be to engage institute with second core part by first core part to constitute, has the relative magnetic circuit of at least one pair of above parallel interval, its mutual correspondence engages and stretches through relatively and is contained in the hollow bulb of described first coil holder and described second coil holder and saddle thereof, constitutes main magnetic circuit.

2. the transformer of converter according to claim 1 is characterized in that: with respect to its winding scope place of described secondary side winding coil, be interval with multiplicative on described first coil holder.

3. the transformer of converter according to claim 1, it is characterized in that: its body exterior two ends of described first coil holder are provided with the socket part of at least one direction breach of tool.

4. the transformer of converter according to claim 1, it is characterized in that: described first coil holder, its body exterior periphery of second coil holder are to be provided with the plurality of leads terminal.

5. the transformer of converter according to claim 1 is characterized in that: with respect to described separating part place, be provided with one or more groove portion on described first coil holder.

6. the transformer of converter according to claim 5, it is characterized in that: described groove portion also can or be attempted by a group or more the secondary side winding coil wherein of winding on second coil holder for the coil sections lead winding serial connection of first side winding coil.

7. the transformer of converter according to claim 1 is characterized in that: described first coil holder, second coil holder are can be relatively to link to each other and become one with another or more than one first coil holder, second coil holder.

8. the transformer of converter according to claim 1 is characterized in that: be the secondary side winding coil that can be arranged with a group or more simultaneously on described second coil holder.

9. the transformer of converter according to claim 1 is characterized in that: with respect to its winding scope place of described first side winding coil, be interval with multiplicative on described second coil holder.

10. the transformer of converter according to claim 1 is characterized in that: described first coil holder and second coil holder are provided with one or more cover body and make up for described first coil holder and second coil holder.

11. the transformer of converter according to claim 10 is characterized in that: described cover body one side is provided with first opening, is provided with second opening relatively on its side, two ends.

12. the transformer of converter according to claim 10 is characterized in that: described cover body can be for described one or more first coil holder and the combination of one or more second coil holder.

13. the transformer of converter according to claim 10 is characterized in that: described cover body inside is to be provided with at least more than one, as making up the fixedly fin of coil holder.

14. the transformer of converter according to claim 1, it is characterized in that: its body two ends of described second coil holder, the outside winding in the winding slot on the saddle that is provided with of vertical extent can or be attempted by a group or more the secondary side winding coil wherein of winding on second coil holder via the outside line serial connection.

15. the transformer of converter according to claim 1 is characterized in that: its body two ends of described first coil holder are to be provided with the saddle that can supply iron core to be provided with by outside respectively vertical extent.

16. the transformer of converter according to claim 1 is characterized in that: its body two ends of described first coil holder are can be respectively as the coil sections winding slot that can supply the first side winding coil.

17. the transformer of converter according to claim 1, it is characterized in that: described group unshakable in one's determination also can engage institute by first core part and constitute with second core part, have more than at least one pair of, parallel interval is relative, and stretch through iron core to the first coil holder hollow bulb and its shape of iron core in the second coil holder hollow bulb do not wait.

18. the transformer of converter according to claim 1, it is characterized in that: described group unshakable in one's determination also can engage institute by first core part and constitute with second core part, have more than at least one pair of, parallel interval is relative, and the iron core that stretches through to the first coil holder hollow bulb is identical in fact with its shape of iron core in the second coil holder hollow bulb.

19. the transformer of converter according to claim 1, it is characterized in that: described group unshakable in one's determination also can engage institute by first core part and constitute with second core part, have more than at least one pair of, parallel interval is relative, and the height unshakable in one's determination in the first coil holder hollow bulb that stretches through is less than the height unshakable in one's determination in the second coil holder hollow bulb that stretches through.

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