Transformer device for reducing magnetic field interference

Abstract

The present invention discloses a transformer device for reducing magnetic field interference, comprising an iron core, a first side coil unit, a second side coil unit, a first current transmission line, a second current transmission line and a third current transmission line; the first side coil unit and the second side coil unit are both wound on the iron core; the first side coil unit is connected to the first current transmission line and the second current transmission line; the second current transmission line is connected to the third current transmission line. The first current transmission line comprises a first current conduction section and a first insulating layer, the first insulating layer covers the first current conduction section; the third current transmission line comprises a second current conduction section and a second insulating layer, the second insulating layer covers the second current conduction section, and the second insulating layer contacts the first insulating layer. The present invention can reduce the magnetic field interference generated by the current of the current transmission line outside the coil of the transformer.

Description

Technical Field

[0001] The invention relates to a transformer device, in particular to a transformer device for reducing magnetic field interference. Background Art

[0002] Transformers are very common. They are electronic circuits that can increase or decrease voltage by applying Faraday's law of electromagnetic induction. Transformers usually contain two or more sets of coils. Their main uses are to increase or decrease the voltage of alternating current, change impedance, and serve as circuit separators. Therefore, transformers are very important.

[0003] Some electronic products require relatively high isolation between the primary and secondary sides of the transformer, such as transformers used in some medical devices. In this case, the wire length of the transformer coil often needs to be extended to achieve the relatively high isolation required between the primary and secondary sides of the transformer.

[0004] However, the above-mentioned transformer requiring relatively high isolation between the primary side and the secondary side has the disadvantage that the magnetic field interference generated by the current of the transformer is large, thus causing problems such as more ripple noise and greater electromagnetic interference. Summary of the invention

[0005] In order to solve the above problems, an object of the present invention is to provide a transformer device for reducing magnetic field interference.

[0006] To achieve the above-mentioned object of the present invention, the transformer device for reducing magnetic field interference of the present invention comprises: an iron core; a first side coil unit, the first side coil unit is wound on the iron core, the first side coil unit comprises a first end and a second end; a second side coil unit, the second side coil unit is wound on the iron core; a first current transmission line, the first current transmission line is connected to the first end; a second current transmission line, the second current transmission line is connected to the second end; and a third current transmission line, the third current transmission line is connected to the second current transmission line, wherein the first current transmission line comprises: a first current conduction segment, the first current conduction segment is connected to the first end; and a first insulating layer, the first insulating layer covers the first current conduction segment, wherein the third current transmission line comprises: a second current conduction segment, the second current conduction segment is connected to the second current transmission line; and a second insulating layer, the second insulating layer covers the second current conduction segment, and the second insulating layer contacts the first insulating layer.

[0007] In a specific embodiment, the first side coil unit includes: a first coil, the first coil is wound on the iron core, the first coil includes the first end and a third end; and a second coil, the second coil is wound on the iron core, the second coil includes the second end and a fourth end.

[0008] In a specific embodiment, the transformer device for reducing magnetic field interference further includes: a fourth current transmission line, the fourth current transmission line is connected to the fourth end point; a fifth current transmission line, the fifth current transmission line is connected to the third end point; and a sixth current transmission line, the sixth current transmission line is connected to the fifth current transmission line.

[0009] In a specific embodiment, the fourth current transmission line includes: a third current conducting segment, the third current conducting segment is connected to the fourth end; and a third insulating layer, the third insulating layer covers the third current conducting segment.

[0010] In a specific embodiment, the sixth current transmission line includes: a fourth current transmission segment connected to the fifth current transmission line; and a fourth insulation layer covering the fourth current transmission segment, the fourth insulation layer contacting the third insulation layer.

[0011] In a specific embodiment, the transformer device for reducing magnetic field interference further includes: an insulating shell, wherein the iron core, the first side coil unit, the second side coil unit, the second current transmission line, the first coil, the second coil and the fifth current transmission line are arranged in the insulating shell.

[0012] In a specific embodiment, the transformer device for reducing magnetic field interference further includes: a first electrical connection portion, which is disposed on the insulating shell; and a second electrical connection portion, which is disposed on the insulating shell, wherein the first current transmission line and the fourth current transmission line are disposed in the insulating shell and pass through the insulating shell to be connected to the first electrical connection portion; the third current transmission line and the sixth current transmission line are disposed in the insulating shell and pass through the insulating shell to be connected to the second electrical connection portion.

[0013] In a specific embodiment, the transformer device for reducing magnetic field interference further includes: a third electrical connection portion, which is disposed on the insulating shell and electrically connected to the second side coil unit; and a fourth electrical connection portion, which is disposed on the insulating shell and electrically connected to the second side coil unit.

[0014] In a specific embodiment, the first side coil unit is a primary side coil set of a transformer; and the second side coil unit is a secondary side coil set of a transformer.

[0015] In a specific embodiment, the second side coil unit is a primary side coil set of a transformer; and the first side coil unit is a secondary side coil set of a transformer.

[0016] The invention has the effect of reducing the magnetic field interference generated by the current in the current transmission line outside the coil of the transformer.

[0017] In order to further understand the techniques, means and effects adopted by the present invention to achieve the predetermined objectives, please refer to the following detailed description and drawings of the present invention. It is believed that the objectives, features and characteristics of the present invention can be deeply and specifically understood thereby. However, the drawings are only provided for reference and illustration and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a first embodiment of a transformer device for reducing magnetic field interference according to the present invention.

[0019] Figure 2 FIG. 4 is a cross-sectional view of a first current transmission line and a third current transmission line of the present invention that are in contact with each other.

[0020] Figure 3 It is a schematic diagram of a second embodiment of a transformer device for reducing magnetic field interference according to the present invention.

[0021] Figure 4 FIG. 4 is a cross-sectional view of a fourth current transmission line and a sixth current transmission line of the present invention that are in contact with each other.

[0022] Explanation of symbols in the accompanying drawings:

[0023] 10: Transformer device for reducing magnetic field interference;

[0024] 20: iron core;

[0025] 30: first side coil unit;

[0026] 40: second side coil unit;

[0027] 50: insulating housing;

[0028] 60: first electrical connection portion;

[0029] 62: second electrical connection portion;

[0030] 64: third electrical connection portion;

[0031] 66: fourth electrical connection portion;

[0032] 302: first endpoint;

[0033] 304: second endpoint;

[0034] 306: a first current transmission line;

[0035] 308: a second current transmission line;

[0036] 310: a third current transmission line;

[0037] 312: first coil;

[0038] 314: third endpoint;

[0039] 316: second coil;

[0040] 318: fourth endpoint;

[0041] 320: fourth current transmission line;

[0042] 322: fifth current transmission line;

[0043] 324: sixth current transmission line;

[0044] 326: first current;

[0045] 328: second current;

[0046] 3062: first current conduction segment;

[0047] 3064: a first insulating layer;

[0048] 3102: second current conducting section;

[0049] 3104: second insulating layer;

[0050] 3202: third current conduction segment;

[0051] 3204: third insulating layer;

[0052] 3242: fourth current conduction segment;

[0053] 3244: The fourth insulating layer. DETAILED DESCRIPTION

[0054] In this disclosure, many specific details are provided to provide a thorough understanding of the specific embodiments of the present invention; however, those skilled in the art should know that the present invention can still be practiced without one or more of these specific details; in other cases, well-known details are not shown or described to avoid obscuring the main technical features of the present invention. The technical content and detailed description of the present invention are described as follows with the help of the drawings:

[0055] Please refer to Figure 1 , which is a schematic diagram of a first embodiment of a transformer device for reducing magnetic field interference of the present invention; and please also refer to Figure 2, which is a cross-sectional view of the first current transmission line and the third current transmission line of the present invention that are in contact with each other. The transformer device 10 for reducing magnetic field interference of the present invention includes an iron core 20, a first side coil unit 30, a second side coil unit 40, an insulating shell 50, a first electrical connection part 60, a second electrical connection part 62, a third electrical connection part 64, a fourth electrical connection part 66, a first current transmission line 306, a second current transmission line 308, and a third current transmission line 310; the first side coil unit 30 includes a first end point 302 and a second end point 304; the first current transmission line 306 includes a first current conduction section 3062 and a first insulating layer 3064, and the third current transmission line 310 includes a second current conduction section 3102 and a second insulating layer 3104. Although Figure 1 Although many components are shown, it should be understood that the present invention only requires the iron core 20, the first side coil unit 30, the second side coil unit 40, the first terminal 302, the second terminal 304, the first current transmission line 306, the second current transmission line 308, the third current transmission line 310, the first current conduction segment 3062, the first insulating layer 3064, the second current conduction segment 3102 and the second insulating layer 3104 to achieve the effect of the present invention.

[0056] The first side coil unit 30 and the second side coil unit 40 are both wound on the iron core 20; the first current transmission line 306 is connected to the first end point 302; the second current transmission line 308 is connected to the second end point 304; the third current transmission line 310 is connected to the second current transmission line 308; the first current conduction section 3062 is connected to the first end point 302; the first insulating layer 3064 covers the first current conduction section 3062; the second current conduction section 3102 is connected to the second current transmission line 308; the second insulating layer 3104 covers the second current conduction section 3102; the second insulating layer 3104 contacts the first insulating layer 3064; the iron core 20 , the first side coil unit 30, the second side coil unit 40 and the second current transmission line 308 are arranged in the insulating shell 50; the first electrical connection part 60, the second electrical connection part 62, the third electrical connection part 64 and the fourth electrical connection part 66 are arranged on the insulating shell 50; the first current transmission line 306 is arranged in the insulating shell 50 and passes through the insulating shell 50 to be connected to the first electrical connection part 60; the third current transmission line 310 is arranged in the insulating shell 50 and passes through the insulating shell 50 to be connected to the second electrical connection part 62; the third electrical connection part 64 and the fourth electrical connection part 66 are electrically connected to the second side coil unit 40.

[0057] The shape of the core 20 is not limited to Figure 1The number of turns and the winding direction of the first side coil unit 30 are not limited to Figure 1 The number of turns and the winding direction of the second side coil unit 40 are not limited to Figure 1 The first current transmission line 306, the first side coil unit 30, the second current transmission line 308 and the third current transmission line 310 can be, for example, but the present invention is not limited to being the same current transmission line, which has a current transmission section and an insulation layer, and the insulation layer covers the current transmission section. In order to clearly show the third current transmission line 310 and the first current transmission line 306, Figure 1 The third current transmission line 310 does not contact the first current transmission line 306, but the preferred embodiment of the present invention is that the third current transmission line 310 contacts the first current transmission line 306, that is, the second insulating layer 3104 contacts the first insulating layer 3064; however, if the third current transmission line 310 does not contact the first current transmission line 306, as long as the third current transmission line 310 is close to the first current transmission line 306, the effect of the present invention can still be achieved. The second current transmission line 308 can be, for example, but the present invention is not limited to not contacting the first current transmission line 306.

[0058] The second insulating layer 3104 contacts the first insulating layer 3064, so that a first current direction of a first current 326 of the third current transmission line 310 is opposite to a second current direction of a second current 328 of the first current transmission line 306, so that a first magnetic field generated by the first current 326 of the third current transmission line 310 reduces or offsets a second magnetic field generated by the second current 328 of the first current transmission line 306. The current paths of the second current 328 and the first current 326 are the first electrical connection portion 60, the first current transmission line 306, the first terminal 302, the first side coil unit 30, the second terminal 304, the second current transmission line 308, the third current transmission line 310 and the second electrical connection portion 62. The first electrical connection portion 60 and the second electrical connection portion 62 are electrically connected to other electronic devices or circuits to receive power, and the third electrical connection portion 64 and the fourth electrical connection portion 66 are also electrically connected to other electronic devices or circuits to transmit power. It is a known technology that current flows through the first side coil unit 30 to generate a magnetic field so that the second side coil unit 40 induces current, so it will not be repeated here. Figure 1 The first side coil unit 30 may be a primary side coil group of a transformer, and the second side coil unit 40 may be a secondary side coil group of a transformer, but the present invention is not limited thereto. The second side coil unit 40 may also be a primary side coil group of a transformer, and the first side coil unit 30 may be a secondary side coil group of a transformer.

[0059] Please refer to Figure 3, which is a schematic diagram of a second embodiment of a transformer device for reducing magnetic field interference of the present invention; and please also refer to Figure 4 , which is a cross-sectional view of the fourth current transmission line and the sixth current transmission line of the present invention in contact with each other; Figure 3 , 4 The components shown are Figure 1 , 2 The components shown are the same, and for the sake of simplicity, their description will not be repeated here. The transformer device 10 for reducing magnetic field interference further includes a fourth current transmission line 320, a fifth current transmission line 322 and a sixth current transmission line 324; the first side coil unit 30 includes a first coil 312 and a second coil 316; the first coil 312 includes the first terminal 302 and a third terminal 314; the second coil 316 includes the second terminal 304 and a fourth terminal 318; the fourth current transmission line 320 includes a third current transmission section 3202 and a third insulation layer 3204; the sixth current transmission line 324 includes a fourth current transmission section 3242 and a fourth insulation layer 3244.

[0060] The first coil 312 and the second coil 316 are both wound on the iron core 20; the fourth current transmission line 320 is connected to the fourth terminal 318; the fifth current transmission line 322 is connected to the third terminal 314; the sixth current transmission line 324 is connected to the fifth current transmission line 322; the third current conduction segment 3202 is connected to the fourth terminal 318; the third insulation layer 3204 covers the third current conduction segment 3202; the fourth current conduction segment 3242 is connected to the fifth current transmission line 322; the fourth insulation layer 3204 covers the third current conduction segment 320 ... The insulating layer 3244 covers the fourth current conducting section 3242; the fourth insulating layer 3244 contacts the third insulating layer 3204; the first coil 312, the second coil 316 and the fifth current transmission line 322 are disposed in the insulating shell 50; the fourth current transmission line 320 is disposed in the insulating shell 50 and passes through the insulating shell 50 to be connected to the first electrical connection portion 60; the sixth current transmission line 324 is disposed in the insulating shell 50 and passes through the insulating shell 50 to be connected to the second electrical connection portion 62.

[0061] The number of turns and winding direction of the first coil 312 are not limited to Figure 1 The number of turns and winding direction of the second coil 316 are not limited to Figure 1. The first current transmission line 306, the first coil 312, the fifth current transmission line 322 and the sixth current transmission line 324 can be the same current transmission line, but the present invention is not limited thereto, and they have a current conduction section and an insulation layer, and the insulation layer covers the current conduction section. The fourth current transmission line 320, the second coil 316, the second current transmission line 308 and the third current transmission line 310 can be, for example, but the present invention is not limited thereto, and they have a current conduction section and an insulation layer, and the insulation layer covers the current conduction section. In order to clearly show the third current transmission line 310 and the first current transmission line 306, Figure 3 The third current transmission line 310 does not contact the first current transmission line 306, but the preferred embodiment of the present invention is that the third current transmission line 310 contacts the first current transmission line 306, that is, the second insulating layer 3104 contacts the first insulating layer 3064; however, if the third current transmission line 310 does not contact the first current transmission line 306, as long as the third current transmission line 310 is close to the first current transmission line 306, the effect of the present invention can still be achieved. To clearly show the sixth current transmission line 324 and the fourth current transmission line 320, Figure 3 The sixth current transmission line 324 does not contact the fourth current transmission line 320, but the preferred embodiment of the present invention is that the sixth current transmission line 324 contacts the fourth current transmission line 320, that is, the fourth insulating layer 3244 contacts the third insulating layer 3204; however, if the sixth current transmission line 324 does not contact the fourth current transmission line 320, as long as the sixth current transmission line 324 is close to the fourth current transmission line 320, the effect of the present invention can still be achieved. The second current transmission line 308 may not contact the first current transmission line 306, but the present invention is not limited thereto; the fifth current transmission line 322 may not contact the fourth current transmission line 320, but the present invention is not limited thereto.

[0062] The fourth insulating layer 3244 contacts the third insulating layer 3204, so that the second current direction of the second current 328 of the sixth current transmission line 324 is opposite to the first current direction of the first current 326 of the fourth current transmission line 320, so that the second magnetic field generated by the second current 328 of the sixth current transmission line 324 reduces or offsets the first magnetic field generated by the first current 326 of the fourth current transmission line 320. The current path of the second current 328 is the first electrical connection portion 60, the first current transmission line 306, the first terminal 302, the first coil 312, the third terminal 314, the fifth current transmission line 322, the sixth current transmission line 324 and the second electrical connection portion 62; the current path of the first current 326 is the first electrical connection portion 60, the fourth current transmission line 320, the fourth terminal 318, the second coil 316, the second terminal 304, the second current transmission line 308, the third current transmission line 310 and the second electrical connection portion 62.

[0063] The invention has the effect of reducing the magnetic field interference generated by the current in the current transmission line outside the coil of the transformer.

[0064] However, the above is only a preferred embodiment of the present invention, and it cannot limit the scope of the implementation of the present invention. That is, all equivalent changes and modifications made according to the claims of the present invention should still fall within the scope of the patent coverage of the present invention. The present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those familiar with the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A transformer device for reducing magnetic field interference, characterized in that: Include: an iron core; a first side coil unit, the first side coil unit is wound on the iron core, the first side coil unit comprises a first end point and a second end point; a second side coil unit, the second side coil unit being wound around the iron core; a first current transmission line connected to the first end point; a second current transmission line connected to the second end point; and a third current transmission line connected to the second current transmission line, The first current transmission line comprises: a first current conducting segment connected to the first terminal; and a first insulating layer, the first insulating layer covering the first current conducting segment, The third current transmission line comprises: a second current conducting section connected to the second current transmission line; and A second insulating layer covers the second current conducting segment and contacts the first insulating layer.

2. The transformer device for reducing magnetic field interference according to claim 1, characterized in that: The first side coil unit comprises: a first coil, the first coil being wound on the iron core, the first coil comprising the first end and a third end; and A second coil is wound around the iron core and includes the second end and a fourth end.

3. The transformer device for reducing magnetic field interference according to claim 2, characterized in that: Also includes: a fourth current transmission line connected to the fourth end point; a fifth current transmission line connected to the third terminal; and a sixth current transmission line connected to the fifth current transmission line.

4. The transformer device for reducing magnetic field interference according to claim 3, characterized in that: The fourth current transmission line comprises: a third current conducting segment connected to the fourth terminal; and A third insulating layer covers the third current conducting segment.

5. The transformer device for reducing magnetic field interference according to claim 4, characterized in that: The sixth current transmission line comprises: a fourth current conducting segment connected to the fifth current transmission line; and A fourth insulating layer covers the fourth current conducting segment and contacts the third insulating layer.

6. The transformer device for reducing magnetic field interference according to claim 5, characterized in that: Also includes: an insulating housing, The iron core, the first side coil unit, the second side coil unit, the second current transmission line, the first coil, the second coil and the fifth current transmission line are arranged in the insulating shell.

7. The transformer device for reducing magnetic field interference according to claim 6, characterized in that: Also includes: a first electrical connection portion, the first electrical connection portion being disposed on the insulating housing; and a second electrical connection portion, the second electrical connection portion being disposed on the insulating housing, The first current transmission line and the fourth current transmission line are arranged in the insulating shell and pass through the insulating shell to be connected to the first electrical connection part; the third current transmission line and the sixth current transmission line are arranged in the insulating shell and pass through the insulating shell to be connected to the second electrical connection part.

8. The transformer device for reducing magnetic field interference according to claim 7, characterized in that: Also includes: a third electrical connection portion, the third electrical connection portion being disposed on the insulating housing and electrically connected to the second side coil unit; and A fourth electrical connection portion is disposed on the insulating housing and electrically connected to the second side coil unit.

9. The transformer device for reducing magnetic field interference according to claim 8, characterized in that: The first side coil unit is a transformer primary side coil group; the second side coil unit is a transformer secondary side coil group.

10. The transformer device for reducing magnetic field interference according to claim 8, characterized in that: The second side coil unit is a transformer primary side coil group; the first side coil unit is a transformer secondary side coil group.

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