Transformer

Abstract

The utility model discloses a transformer, and relates to the technical field of transformers, the transformer comprises an iron core, a low-voltage coil, a first conductive piece, a second conductive piece and a plurality of clamping pieces, and the first conductive piece is electrically connected to the low-voltage coil; the second conductive part is electrically connected to the low-voltage coil and extends in parallel with the first conductive part in the same direction; the plurality of clamping pieces clamp the iron core, the plurality of clamping pieces comprise a first clamping piece, and the first conductive piece and the second conductive piece are clamped between the iron core and the first clamping piece; every two adjacent ones of the iron core, the second conductive piece, the first conductive piece and the first clamping piece are insulated from each other. According to the technical scheme, the first conductive part and the second conductive part which extend in the same direction in parallel are clamped between the iron core and the first clamping part, so that the distance between the first conductive part and the second conductive part is greatly reduced, and the eddy current loss of the first clamping part is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of transformer technology, and in particular to a transformer. Background Technology

[0002] The transformer clamps, as supporting components for the transformer core, form a frame structure with the screws and pads, serving to support the core and coils. The copper busbars used to connect the low-voltage coil input and output lines generate an induced magnetic field around them. Since the clamps are located near these busbars, the induced magnetic field induces eddy currents in the clamps, resulting in losses. Utility Model Content

[0003] The main objective of this application is to provide a transformer designed to reduce eddy current losses in the transformer's first clamping element.

[0004] To achieve the above objectives, the transformer proposed in this application includes:

[0005] Iron core, low-voltage coil;

[0006] The first conductive element is electrically connected to the low-voltage coil;

[0007] The second conductive element is electrically connected to the low-voltage coil and extends in the same direction as the first conductive element.

[0008] Multiple clamping members clamp the iron core, and the multiple clamping members include a first clamping member, with the first conductive member and the second conductive member clamped between the iron core and the first clamping member;

[0009] The iron core, the second conductive element, the first conductive element, and the first clamping element are insulated from each other.

[0010] In one embodiment, the first conductive element includes a first conductive segment and a second conductive segment connected together, and the second conductive element includes a third conductive segment and a fourth conductive segment connected together. The first conductive element is electrically connected to the low-voltage coil through the first conductive segment, and the second conductive element is electrically connected to the low-voltage coil through the third conductive segment. The second conductive segment and the fourth conductive segment are clamped between the iron core and the first clamping member, and the distance between the first conductive segment and the third conductive segment is greater than the distance between the second conductive segment and the fourth conductive segment.

[0011] In one embodiment, the midlines of the projections of the second conductive segment and the fourth conductive segment along their length direction are aligned.

[0012] In one embodiment, at least the second conductive segment protrudes toward the iron core.

[0013] In one embodiment, the fourth conductive segment extends in a straight line, and the second conductive segment is bent to form a receiving groove with an opening opposite to the fourth conductive segment, and the first clamping member is received in the receiving groove.

[0014] In one embodiment, insulating elements are provided between the first clamping member and the second conductive segment, between the second conductive segment and the fourth conductive segment, and between the fourth conductive segment and the iron core.

[0015] In one embodiment, the insulating element is configured as insulating paper.

[0016] In one embodiment, the first conductive element and / or the second conductive element are configured as copper busbars.

[0017] In one embodiment, the second conductive segment and the fourth conductive segment are disposed near the top or bottom of the transformer.

[0018] In one embodiment, the first conductive element is connected to the current input terminal of the low-voltage coil, and the second conductive element is connected to the current output terminal of the low-voltage coil.

[0019] The technical solution of this application greatly reduces the distance between the first and second conductive elements by clamping the parallel and unidirectional first conductive element and the first clamping element between the iron core and the first clamping element. This helps to counteract the magnetic field generated by the first and second conductive elements near the first clamping element, effectively reducing the eddy current loss of the first clamping element, and thus helping to reduce the energy consumption of the transformer. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the transformer provided in this application;

[0022] Figure 2 Front view of the clamping device holding the first conductive element and the second conductive element;

[0023] Figure 3 A side view of the clamp holding the first conductive element and the second conductive element;

[0024] Figure 4 A top view of the clamp holding the first conductive element and the second conductive element;

[0025] Figure 5 This is a schematic diagram of a structure of one embodiment of the first conductive element and the second conductive element;

[0026] Figure 6 This is a schematic diagram of another embodiment of the first conductive element and the second conductive element;

[0027] Figure 7 for Figure 1 A magnified view of a portion of point A in the middle.

[0028] Explanation of icon numbers:

[0029] 10. Transformer; 100. Iron core; 200. Low-voltage coil; 300. First conductive element; 400. Second conductive element; 500. Clamping element; 600. Insulating element; 310. First conductive section; 320. Second conductive section; 321. Receiving groove; 410. Third conductive section; 420. Fourth conductive section; 510. First clamping element.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0034] This application proposes a transformer 10.

[0035] Please see Figure 1 and Figure 7 In one embodiment of this application, the transformer 10 includes an iron core 100, a low-voltage coil 200, a first conductive element 300, a second conductive element 400, and a plurality of clamping elements 500. The first conductive element 300 is electrically connected to the low-voltage coil 200; the second conductive element 400 is electrically connected to the low-voltage coil 200 and extends in parallel and in the same direction as the first conductive element 300; the plurality of clamping elements 500 clamp the iron core 100, and the plurality of clamping elements 500 includes a first clamping element 510. The first conductive element 300 and the second conductive element 400 are clamped between the iron core 100 and the first clamping element 510; adjacent pairs of the iron core 100, the second conductive element 400, the first conductive element 300, and the first clamping element 510 are mutually insulated.

[0036] Specifically, multiple clamping members 500 are used to clamp the iron core 100 and fix the first conductive member 300 and the second conductive member 400. The low-voltage coil 200 is wound on the iron core 100 and is responsible for transmitting electrical energy. One of the clamping members 500 is the first clamping member 510. The first clamping member 510 not only fixes the iron core 100 but also firmly clamps the first conductive member 300 and the second conductive member 400, reducing the risk of loosening. Even under vibration or impact conditions, it can maintain a stable electrical connection, which not only improves the mechanical strength of the transformer 10 but also makes the structure of the transformer 10 more compact. Simultaneously, under the clamping action of the first clamping member 510, the first conductive member 300 and the second conductive member 400 abut against each other, greatly reducing the distance between them.

[0037] Understandably, one of the first conductive element 300 and the second conductive element 400 is electrically connected to the current input terminal of the low-voltage coil 200, and the other is electrically connected to the current output terminal of the low-voltage coil 200. When current flows through the first conductive element 300 and the second conductive element 400, both generate induced magnetic fields, and the directions of their magnetic fields are opposite. The first conductive element 300 and the second conductive element 400 extend in parallel and in the same direction, and the current directions of their respective elements are opposite. Therefore, the induced magnetic fields generated by the first conductive element 300 and the second conductive element 400 will form a mutually canceling magnetic field effect, which is beneficial for canceling the magnetic field in the area where the first clamping element 510 is located. This greatly reduces the magnetic field strength on the first clamping element 510, thereby effectively reducing the eddy current loss of the first clamping element 510, and further reducing stray magnetic field loss and leakage flux. This helps to improve the energy conversion efficiency of the transformer 10 and reduce energy consumption. In addition, the iron core 100, the second conductive element 400, the first conductive element 300 and the first clamping element 510 are arranged in sequence, and the adjacent ones are insulated from each other, which ensures electrical isolation between the parts and prevents short circuits or leakage accidents.

[0038] The technical solution of this application clamps the first conductive element 300 and the second conductive element 400, which extend in parallel and in the same direction, between the iron core 100 and the first clamping member 510. This greatly reduces the distance between the first conductive element 300 and the second conductive element 400, which helps to counteract the magnetic field generated by the first conductive element 300 and the second conductive element 400 near the first clamping member 510. This effectively reduces the eddy current loss of the first clamping member 510, and thus helps to reduce the energy consumption of the transformer 10.

[0039] In one implementation, please refer to Figure 5 The first conductive element 300 includes a first conductive segment 310 and a second conductive segment 320 connected together. The second conductive element 400 includes a third conductive segment 410 and a fourth conductive segment 420 connected together. The first conductive element 300 is electrically connected to the low-voltage coil 200 through the first conductive segment 310. The second conductive element 400 is electrically connected to the low-voltage coil 200 through the third conductive segment 410. The second conductive segment 320 and the fourth conductive segment 420 are clamped between the iron core 100 and the first clamping member 510. The distance between the first conductive segment 310 and the third conductive segment 410 is L1, and the distance between the second conductive segment 320 and the fourth conductive segment 420 is L2, where L1 > L2.

[0040] The first conductive segment 310 and the third conductive segment 410 are responsible for electrical connection with the low-voltage coil 200, serving as input and output current. The second conductive segment 320 and the fourth conductive segment 420 are clamped between the iron core 100 and the first clamping member 510 to ensure the stability of their connection and to counteract part of the magnetic field.

[0041] The spacing between the first conductive segment 310 and the third conductive segment 410 is greater than the spacing between the second conductive segment 320 and the fourth conductive segment 420. This larger spacing effectively reduces local current density and heat loss. Simultaneously, the increased spacing between the first conductive segment 310 and the third conductive segment 410 increases the insulation distance, improves insulation performance, reduces the risk of short circuits, and ensures the electrical safety of the transformer 10.

[0042] In one implementation, please refer to Figure 4 The centerlines of the projections of the second conductive segment 320 and the fourth conductive segment 420 in their length direction are aligned.

[0043] Figure 4 The dashed line in the diagram represents the centerline of the projections of the second conductive segment 320 and the fourth conductive segment 420 along their length. The centerlines of the projections of the second conductive segment 320 and the fourth conductive segment 420 along their length are aligned. When the widths of the second conductive segment 320 and the fourth conductive segment 420 are the same, their two side edges along the width direction are aligned. When the widths of the second conductive segment 320 and the fourth conductive segment 420 are different, their centerlines are aligned. This ensures that the current paths of the second conductive segment 320 and the fourth conductive segment 420 are geometrically symmetrical, thereby maximally canceling out the magnetic fields generated by the second conductive segment 320 and the fourth conductive segment 420.

[0044] Meanwhile, the centerline alignment design ensures that the second conductive segment 320 and the fourth conductive segment 420 are subjected to more uniform force when clamped between the iron core 100 and the first clamping member 510. This uniform force distribution prevents deformation or loosening caused by asymmetrical stress, thereby enhancing the overall structural stability.

[0045] In other embodiments, when the widths of the second conductive segment 320 and the fourth conductive segment 420 are different, the centerlines of the second conductive segment 320 and the fourth conductive segment 420 may not be aligned, and the second conductive segment 320 and the fourth conductive segment 420 may overlap.

[0046] In one implementation, please refer to Figure 5 At least the second conductive segment 320 protrudes toward the iron core 100.

[0047] The second conductive segment 320 protrudes towards the iron core 100. That is, the shape of the second conductive segment 320 is not completely straight, but has a certain curvature or protrusion, making it closer to the fourth conductive segment 420. This results in a smaller gap between the second conductive segment 320 and the fourth conductive segment 420. This helps to counteract the magnetic field generated by the second conductive segment 320 and the fourth conductive segment 420 near the first clamping member 510, effectively reducing the eddy current loss of the first clamping member 510.

[0048] In one implementation, please refer to Figure 5 The fourth conductive segment 420 extends in a straight line, and the second conductive segment 320 is bent to form a receiving groove 321 with an opening opposite to the fourth conductive segment 420. The first clamping member 510 is accommodated in the receiving groove 321.

[0049] When the position where the third conductive segment 410 connects to the low-voltage coil 200 is approximately the same as the position where the first clamping member 510 clamps the iron core 100, the first conductive member 300 extends in a straight line. With the first conductive member 300 extending in almost no change direction, the fourth conductive segment 420 is clamped between the iron core 100 and the first clamping member 510. The straight extension of the fourth conductive segment 420 simplifies the manufacturing process and facilitates processing and assembly. Simultaneously, the straight path reduces the resistance to current flow, thereby reducing energy loss.

[0050] The second conductive segment 320 is bent to form a receiving groove 321, which provides installation space for the first clamping member 510, improving the compactness and stability of the overall structure. Under vibration or impact conditions, it can better fix the second conductive segment 320 and the fourth conductive segment 420, preventing loosening or deformation. By bending the second conductive segment 320, the bottom of the receiving groove 321 is brought closer to the fourth conductive segment 420, thereby canceling the magnetic fields of the second conductive segment 320 and the fourth conductive segment 420.

[0051] For other implementations, please refer to Figure 6 When the position of the third conductive segment 410 connected to the low-voltage coil 200 protrudes beyond the position where the first clamping member 510 clamps the iron core 100, both the second conductive segment 320 and the fourth conductive segment 420 protrude toward the iron core 100, and the protruding parts of the second conductive segment 320 and the fourth conductive segment 420 correspond to each other.

[0052] In one implementation, please refer to Figure 7 Insulating members 600 are clamped between the first clamping member 510 and the second conductive segment 320, between the second conductive segment 320 and the fourth conductive segment 420, and between the fourth conductive segment 420 and the iron core 100.

[0053] An insulating component 600 is clamped between the first clamping component 510 and the second conductive segment 320 to prevent current from flowing from the second conductive segment 320 to the first clamping component 510; the insulating component 600 is clamped between the second conductive segment 320 and the fourth conductive segment 420 to prevent current conduction between adjacent conductive segments; the insulating component 600 is clamped between the fourth conductive segment 420 and the iron core 100 to ensure electrical isolation between the fourth conductive segment 420 and the iron core 100. The insulating component 600 is fixed in these positions by the clamping force of the first clamping component 510. The clamping method ensures the stability of the insulating component 600, preventing it from loosening or shifting even under vibration or impact conditions. The insulating component 600 at each position can be selected with appropriate insulating material and thickness according to specific requirements. For example, the second conductive segment 320 and the fourth conductive segment 420 can be made of thinner insulating material 600 to minimize the gap between them; the fourth conductive segment 420 and the iron core 100 can be made of insulating material 600 of appropriate thickness to compensate for the gap between them. The insulating material 600 ensures that the first clamping member 510 and the second conductive segment 320, the second conductive segment 320 and the fourth conductive segment 420, and the fourth conductive segment 420 and the iron core 100 are mutually insulated, ensuring electrical isolation between the parts and effectively preventing short circuits or leakage accidents.

[0054] In other embodiments, the outer surfaces of the first clamping member 510, the second conductive segment 320, and the fourth conductive segment 420 may be covered with an insulating layer or coated with an insulating layer.

[0055] In one embodiment, the insulating element 600 is configured as insulating paper.

[0056] Insulating paper, as an electrical insulating material, possesses excellent electrical insulation properties, effectively preventing short circuits or leakage under high voltage or high current environments. It is typically made of cellulose or other heat-resistant materials, possessing a certain mechanical strength to withstand the clamping force of the first clamping element 510 and the influence of the external environment, ensuring it will not break or shift under vibration or impact conditions. Insulating paper has a high heat resistance rating, maintaining stable performance at high temperatures. Its low dielectric loss reduces energy loss caused by the insulating material itself. The low cost of insulating paper lowers production costs. Specifically, the insulating element 600 can be made of adhesive-coated insulating paper, thin insulating paperboard, etc.

[0057] In other embodiments, the insulating element 600 may also be mica sheet, epoxy resin, glass fiber, ceramic or other composite insulating materials.

[0058] In one implementation, please refer to Figure 2 and Figure 4The first conductive element 300 and / or the second conductive element 400 are configured as copper busbars.

[0059] The first conductive element 300 and / or the second conductive element 400 are configured as copper busbars, whose low resistance and high conductivity reduce energy loss during current transmission; the copper busbars can quickly transfer heat to the external environment, which helps to reduce local temperature and extend the service life of the transformer 10; the copper busbars have a certain mechanical strength and can withstand the clamping force of the first clamping element 510; the flexibility of the copper busbars makes them easy to process into the required shape (such as the bent structure of the second conductive segment 320).

[0060] In other embodiments, the first conductive element 300 and the second conductive element 400 may also be configured as leads.

[0061] In one implementation, please refer to Figure 1 The second conductive section 320 and the fourth conductive section 420 are positioned near the top of the transformer 10.

[0062] The second conductive section 320 and the fourth conductive section 420 are positioned near the top of the transformer 10, meaning that the first conductive element 300 and the second conductive element 400 are directed toward the top of the transformer 10. This provides more installation space near the top of the transformer 10, thus improving operability during installation.

[0063] In another embodiment, the second conductive segment 320 and the fourth conductive segment 420 may also be disposed near the bottom of the transformer 10, that is, the first conductive element 300 and the second conductive element 400 are directed toward the bottom of the transformer 10.

[0064] In one implementation, please refer to Figure 1 and Figure 3 The first conductive element 300 is connected to the current input terminal of the low-voltage coil 200, and the second conductive element 400 is connected to the current output terminal of the low-voltage coil 200.

[0065] The first conductive element 300 is connected to the outside of the low-voltage coil 200 and electrically connected to the current input terminal of the low-voltage coil 200; the second conductive element 400 is connected to the inside of the low-voltage coil 200 and electrically connected to the current output terminal of the low-voltage coil 200. Current is introduced into the low-voltage coil 200 through the first conductive element 300 and then flows out of the low-voltage coil 200 through the second conductive element 400. Understandably, when the first conductive element 300 introduces current, the current enters the low-voltage coil 200 from the outside, resulting in a more uniform magnetic field distribution between the first conductive element 300 and the low-voltage coil 200. This effectively reduces eddy current losses caused by magnetic field changes and improves the efficiency of the transformer 10. When the second conductive element 400 discharges current, the discharged current is far from the external strong magnetic field region, further reducing the eddy current effect. The first conductive element 300, located in the environment outside the low-voltage coil 200, has better heat dissipation conditions, allowing it to fully utilize its excellent heat dissipation capacity and reduce temperature rise. The second conductive element 400 is located inside the low-voltage coil 200. It mainly undertakes the function of conducting current and generates relatively little heat, so it will not significantly increase the temperature rise.

[0066] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A transformer (10), characterized in that, include: Iron core (100), low-voltage coil (200); The first conductive element (300) is electrically connected to the low-voltage coil (200); The second conductive element (400) is electrically connected to the low-voltage coil (200) and extends in the same direction as the first conductive element (300); Multiple clamping members (500) clamp the iron core (100), the multiple clamping members (500) include a first clamping member (510), the first conductive member (300) and the second conductive member (400) are clamped between the iron core (100) and the first clamping member (510); The two adjacent elements of the core (100), the second conductive element (400), the first conductive element (300), and the first clamping element (510) are insulated from each other.

2. The transformer (10) as described in claim 1, characterized in that, The first conductive element (300) includes a first conductive segment (310) and a second conductive segment (320) connected together. The second conductive element (400) includes a third conductive segment (410) and a fourth conductive segment (420) connected together. The first conductive element (300) is electrically connected to the low-voltage coil (200) through the first conductive segment (310). The second conductive element (400) is electrically connected to the low-voltage coil (200) through the third conductive segment (410). The second conductive segment (320) and the fourth conductive segment (420) are clamped between the iron core (100) and the first clamping member (510). The distance between the first conductive segment (310) and the third conductive segment (410) is greater than the distance between the second conductive segment (320) and the fourth conductive segment (420).

3. The transformer (10) as described in claim 2, characterized in that, The second conductive segment (320) and the fourth conductive segment (420) are aligned along the centerline of their projections in the length direction.

4. The transformer (10) as described in claim 2, characterized in that, At least the second conductive segment (320) protrudes toward the iron core (100).

5. The transformer (10) as described in claim 4, characterized in that, The fourth conductive segment (420) extends in a straight line, and the second conductive segment (320) is bent to form a receiving groove (321) with an opening opposite to the fourth conductive segment (420). The first clamping member (510) is accommodated in the receiving groove (321).

6. The transformer (10) as described in claim 2, characterized in that, Insulating members (600) are clamped between the first clamping member (510) and the second conductive segment (320), between the second conductive segment (320) and the fourth conductive segment (420), and between the fourth conductive segment (420) and the iron core (100).

7. The transformer (10) as described in claim 6, characterized in that, The insulating element (600) is configured as insulating paper.

8. The transformer (10) as described in claim 2, characterized in that, The first conductive element (300) and / or the second conductive element (400) are configured as copper busbars.

9. The transformer (10) as described in claim 2, characterized in that, The second conductive segment (320) and the fourth conductive segment (420) are disposed near the top or bottom of the transformer (10).

10. The transformer (10) as claimed in claim 1, characterized in that, The first conductive element (300) is connected to the current input terminal of the low-voltage coil (200), and the second conductive element (400) is connected to the current output terminal of the low-voltage coil (200).

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