WO2017140094A1 - Inductor, transformer and electrical device - Google Patents
Inductor, transformer and electrical device Download PDFInfo
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- WO2017140094A1 WO2017140094A1 PCT/CN2016/092894 CN2016092894W WO2017140094A1 WO 2017140094 A1 WO2017140094 A1 WO 2017140094A1 CN 2016092894 W CN2016092894 W CN 2016092894W WO 2017140094 A1 WO2017140094 A1 WO 2017140094A1
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- Prior art keywords
- metal conductor
- coil
- inductor
- transformer
- metal
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 138
- 239000002184 metal Substances 0.000 claims abstract description 138
- 239000004020 conductor Substances 0.000 claims abstract description 121
- 230000004907 flux Effects 0.000 claims abstract description 41
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 230000006698 induction Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 238000004088 simulation Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000005347 demagnetization Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
Definitions
- the invention relates to the field of communication technologies, and in particular to an inductor, a transformer and an electrical device.
- the electromagnetic compatibility of electronic products has received more and more attention. Especially in developed countries in the world, a complete electromagnetic compatibility system has been formed. At the same time, China is also establishing an electromagnetic compatibility system. Therefore, the electromagnetic compatibility of products is realized. Passes to enter the international market. For the switching power supply, since the switching tube and the rectifier tube operate under conditions of high current and high voltage, strong electromagnetic interference is generated to the outside world, so the switching power supply is more difficult to achieve electromagnetic compatibility than other products.
- the conducted disturbance of the switching power supply is electromagnetic interference that propagates outward through the input power line of the power supply.
- the test frequency ranges from 150 kHz to 30 MHz, and the limits are as shown in Table 1 below.
- Source of disturbance the source of the interference
- Coupling pathway carrier for propagation interference
- the electromagnetic coupling between the common switching power supply and the filter circuit will result in a decrease in the filtering effect of the filter circuit, which will result in the power conduction disturbance test not passing, which becomes a pain point for the design of the power supply product.
- the invention provides an inductor, a transformer and an electrical device for improving the magnetic flux leakage of the inductor and the transformer and improving the electromagnetic compatibility of the electrical device.
- an inductor comprising:
- a metal conductor electrically insulated from the coil the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
- the magnetic field and the magnetic flux leakage cancellation for suppressing the magnetic flux leakage of the coil are formed by induction of the metal conductor, thereby reducing the influence of magnetic leakage of the electronic product on other electronic products, and improving the electromagnetic compatibility between the electronic products. .
- the inductor further includes a core, the coil is wound on the core, and the metal conductor is fixed on the core.
- the coil is supported by the iron core, and the metal conductor is placed on the iron core to facilitate the fixing of the metal conductor.
- the metal conductor can adopt different structures, and the iron core adopts a back-shaped structure.
- the metal conductor is a columnar metal conductor
- the metal conductor is a flat metal conductor.
- the distance between the metal conductor and the coil is less than 10 mm when the metal conductor is placed. Thereby ensuring as many magnetic lines of force as possible through the metal conductor, in a preferred embodiment, preferably the distance between the metal conductor and the coil is between 2 and 5 mm.
- the angle between the metal conductor and the coil axis is between 60° and 90°.
- the metal conductor comprises a multi-layer laminated metal sheet structure. Demagnetization is performed by a magnetic field formed by each layer of metal sheet structure.
- a transformer comprising:
- a metal conductor electrically insulated from the coil the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
- the magnetic field and the magnetic flux leakage cancellation for suppressing the magnetic flux leakage of the coil are formed by induction of the metal conductor, thereby reducing the influence of magnetic leakage of the electronic product on other electronic products, and improving the electromagnetic compatibility between the electronic products. .
- the metal conductor is attached to the core. Convenient for the fixing of metal conductors.
- the metal conductor can adopt different structures.
- the metal conductor adopts a frame-shaped metal conductor, and when the iron core adopts a columnar structure, the metal conductor adopts a flat-plate type metal conductor.
- the distance between the metal conductor and the coil is less than 10 mm when the metal conductor is placed. Thereby ensuring as many magnetic lines of force as possible through the metal conductor, in a preferred embodiment, preferably the distance between the metal conductor and the coil is between 2 and 5 mm.
- the angle between the metal conductor and the coil axis is between 60° and 90°.
- the metal conductor comprises a multi-layer laminated metal sheet structure. Demagnetization is performed by a magnetic field formed by each layer of metal sheet structure.
- an electrical device comprising the inductor of any of the above and/or the transformer of any of the above.
- the magnetic field and the magnetic flux leakage cancellation for suppressing the magnetic flux leakage of the coil are formed by induction of the metal conductor, thereby reducing the influence of magnetic leakage of the electronic product on other electronic products, and improving the electromagnetic compatibility between the electronic products. .
- FIG. 2 is a schematic structural diagram of an inductor according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of an inductor according to another embodiment of the present invention.
- FIG. 5 is a schematic diagram of an inductor according to an embodiment of the present invention.
- 6a is a simulation diagram of magnetic induction of an inductor in the prior art
- 6b is a simulation diagram of magnetic induction of an inductor according to an embodiment of the present invention.
- FIG. 7a is a schematic diagram of power conduction disturbance when the electrical equipment in the prior art adopts the inductance in the prior art
- FIG. 7b is a schematic diagram of a power conduction disturbance when an electrical device according to an embodiment of the present invention is used in an embodiment of the present invention.
- the inductor or the transformer provided by the embodiment provides a degaussing structure according to Lenz's law to reduce electromagnetic interference generated in the electronic product.
- the part in which the inductor and the transformer generate electromagnetic are both coils, and in the present embodiment, the inductance is the same as the degaussing structure in the transformer, and the degaussing structure of the inductor is first described below.
- An embodiment of the present invention provides an inductor, where the inductor includes:
- a metal conductor electrically insulated from the coil the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
- the magnetic field and the magnetic flux leakage cancellation for suppressing the magnetic flux leakage of the coil are formed by the metal conductor provided, thereby reducing the influence of magnetic leakage of the electronic product on other electronic products, and improving the electromagnetic compatibility between the electronic products. .
- the principle adopted in this embodiment is described in detail below.
- the coil when the inductor coil is connected to an alternating current, the coil generates an alternating magnetic field H1.
- the alternating magnetic field H1 forms a eddy current on the metal conductor, and the eddy current generates an induced magnetic field H2, which is opposite to the magnetic field H1 generated by the coil, thereby weakening the magnetic field radiation and coupling ability of the inductor.
- the magnetic field radiation of the coil can be effectively reduced by the disposed metal conductor, and the compatibility between the electronic products is improved.
- the inductor further includes a core 10, the coil 20 is wound on the core 10, and the metal conductor 30 is fixed on the core 10.
- the coil 20 is supported by the iron core 10, and the metal conductor 30 is placed on the iron core 10.
- the coil 20 is directly wound around the iron core 10.
- the shape of the iron core 10 can be selected from different shapes, and a columnar structure can be selected. When the coil 20 is wound, it can be exposed to the outside of the iron core 10, or The coil 20 is wrapped with a core 10 as shown in FIG. Or, according to actual needs, the metal conductor 30 may have a perforated structure, as shown in FIG. In actual production, you can choose according to your needs.
- the metal conductors 30 may be disposed on different components, and only the magnetic field lines satisfying the alternating magnetic field emitted by the coil 20 may pass through the metal conductors 30.
- the metal conductor 30 is attached to the core 10 to facilitate the placement of the metal conductor 30.
- the heat dissipation of the device and the heat dissipation of the system are not affected; in particular, since the metal structure added by the solution is generally a planar structure and a non-sealed structure, the heat dissipation of the device itself is not substantially affected.
- the degaussing structure is simple in structure, easy to process, and can be mass-produced; the specific: the solution can be completed before the inductor leaves the factory, and the structure is simple, and mass production can be realized. As an integral device of the inductor, it does not increase the production and processing links.
- the metal conductor 30 is a frame-shaped metal conductor 30 or a flat metal conductor 30. Specifically, as shown in FIG. 2, when the iron core 10 adopts a columnar structure, the metal conductor 30 is a flat metal conductor 30; as shown in FIG. 3, when the iron core 10 adopts a back-shaped structure, the metal conductor 30 has a frame shape. Metal conductor 30. Regardless of the above structure of the metal conductor 30, the metal conductor 30 is a sheet-like structure, and the metal conductor 30 can be made of a different metal. For example, the metal conductor 30 can be made of a material having high electrical conductivity such as copper foil or aluminum foil. And the metal plane 30 has a small metal plane.
- the metal conductor 30 can be disposed in a multi-layer structure.
- the metal conductor 30 includes a plurality of stacked metal sheets. Structure. Demagnetization is performed by a magnetic field formed by each layer of metal sheet structure. In use, each metal sheet structure generates an induced magnetic field, and the direction of the induced magnetic field is opposite to the direction of the alternating magnetic field formed by the coil 20, and the alternating magnetic field is formed to cancel the alternating magnetic field together, thereby further Reduced magnetic flux leakage and improved magnetic field compatibility between electronic products.
- the angle of the metal conductor 30 to the axis of the coil 20 is between 60 and 90 in a particular arrangement. Thereby, more magnetic lines of force are ensured to generate eddy currents through the metal conductor 30, increasing the intensity of the induced electric field and further reducing the coupling effect of the magnetic field.
- the angle between the metal conductor 30 and the axis of the coil 20 ie, the angle between the metal surface and the axis of the coil 20
- the surface direction of the metal conductor 30 and the magnetic flux line of the leakage flux can be as perpendicular as possible, and the distance from the device is close, and the film can be closely attached to minimize the radiation/coupling of the magnetic device;
- the magnetic field lines of the magnetic field generated by the coil 20 are outside the coil 20, are emitted from one end of the coil 20, and the other end receives the magnetic lines of force at the end of the coil 20, so that when the surface of the metal conductor 30 is perpendicular to the axis of the coil 20, There can be more magnetic lines of force passing through the metal conductor 30 to form a vortex to increase the strength of the induced magnetic field.
- the metal conductor 30 in order to allow more magnetic lines of force to pass through the metal conductor 30, the smaller the distance of the metal conductor 30 from the end of the coil 20, the better.
- the metal conductor The distance between 30 and the coil 20 is less than 10 mm.
- the metal conductor 30 is insulated from the coil 20 such that the minimum distance between the two is greater than zero to avoid contact of the metal conductor 30 with the coil 20.
- the distance between the metal conductor 30 and the coil 20 is between 2 and 5 mm. For example, 2mm, 3mm, 4mm, 5mm, etc., any distance between 2 and 5mm.
- FIG. 6a is a simulation of magnetic induction at 10 mm above the power inductor without the degaussing structure in the prior art.
- FIG. 6b is a simulation of magnetic induction intensity at 10 mm above the power inductor provided by the embodiment.
- the simulation uses Maxwell software to simulate a cloud image of the magnetic induction intensity amplitude of the projection plane at 10 mm directly above the power inductor before and after applying the inventive scheme.
- the cloud image is a 15-level color gradation. From blue to red, the magnetic induction intensity is gradually increased by 5.31 times, blue indicates a magnetic induction intensity of 2.6006E-05T (T: Tesla), and red indicates a magnetic induction intensity of 1.3810E-04T.
- FIG. 7a is a measured view of an inductor that does not use a degaussing effect in the prior art
- FIG. 7b is an inductor of the embodiment of the present invention.
- This test is a spectrum diagram of the conduction noise of a device power port, the test method and The test arrangement is referred to EN 55022:2010 Section 9.5. There are two limit lines and two spectrum curves in the spectrum.
- the limit line is the power port CLASS B limit line specified in section 5.1 of EN 55022:2010, which is divided into Quasi-peak Limits and Average Limits.
- the two spectral curves are the power port noise spectra corresponding to the two different detection methods (average detector and peak detector). It can be seen from the comparison of FIG. 7a and FIG. 7b that the inductor provided by this embodiment has a good degaussing effect.
- the inductor provided in this embodiment has a good degaussing effect after adopting the degaussing structure.
- the distance between the power source and the power inductor is not required, and the metal structure shielding isolation is not required.
- the PCB layout area is increased by zero and the cost increase is low.
- the coupling of a power module to the near-field magnetic field of the lightning protection power inductor causes the power conduction disturbance test to exceed the limit line. After applying the technical solution, the power conduction disturbance test data is reduced by 6 dB, thereby ensuring that the test result is satisfied. Limit line requirements.
- the above-described degaussing structure since a metal conductor 30 disposed on the core 10 is used for degaussing, it is usually only necessary to add a metal structure having a small area to a specific surface of the inductor perpendicular to the magnetic flux of the leakage flux. (such as copper foil), the cost is very low; and the reason: because the added metal structure is usually a planar structure, the thickness generally does not exceed 1mm, basically can not affect the PCB layout area, the original shape and size of the magnetic device change less The impact on the entire device is negligible.
- This embodiment also provides a transformer, the transformer comprising:
- a metal conductor electrically insulated from the coil the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
- the magnetic flux is also generated in the transformer, and the metal conductor is also used for degaussing.
- the structure and principle of the inductor are similar to those of the inductor provided in this embodiment, and will not be described in detail herein.
- the shape, arrangement, and distance from the coil are the same as the present embodiment.
- the metal conductors in the inductors provided are the same, ie the metal conductors are fixed to the core.
- the metal conductor is a frame metal conductor or a flat metal conductor.
- the distance between the metal conductor and the coil is less than 10 mm.
- the distance between the metal conductor and the coil is between 2 and 5 mm.
- the angle between the metal conductor and the leakage flux magnetic field line is between 60° and 90°.
- the present embodiment also provides an electrical device including the above-described inductor and the above-described transformer.
- the electrical device includes a switching power supply, a filter circuit connected to the switching power supply, and a receiver connected to the filter, wherein the switching power supply is provided with a transformer, and the power inductor is disposed in the receiver. At least one of the transformer and the power inductor is provided with a metal conductor for degaussing, thereby avoiding coupling between the switching power supply and the receiver when the electrical device is in use, thereby improving the use effect of the electrical device.
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Abstract
An inductor, a transformer and an electrical device. The inductor and the transformer both comprise a coil (20) and a metal conductor (30) electrically insulated from the coil (20), wherein the metal conductor (30) is arranged at the position where a leakage magnetic flux line of the coil (20) is cut, and the metal conductor (30) forms, in an induction manner, a magnetic field for suppressing the leakage flux of the coil (20). A metal conductor is arranged to form, in an induction manner, a magnetic field for suppressing the leakage flux of the coil, so as to cancel the leakage flux, thereby reducing the influence of the leakage flux of an electronic product on other electronic products and improving the electromagnetic compatibility between the electronic products.
Description
本申请要求在2016年02月18日提交中国专利局、申请号为201610091031.1、发明名称为“一种电感、变压器及电气设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。The present application claims priority to Chinese Patent Application No. 201610091031.1, entitled "Inductance, Transformer, and Electrical Equipment", filed on February 18, 2016, the entire contents of which is incorporated herein by reference. in.
本发明涉及到通信技术领域，尤其涉及到一种电感、变压器及电气设备。The invention relates to the field of communication technologies, and in particular to an inductor, a transformer and an electrical device.
目前，电子产品电磁兼容问题越来越受到人们的重视，尤其是世界上发达国家，已经形成了一套完整的电磁兼容体系，同时我国也正在建立电磁兼容体系，因此，实现产品的电磁兼容是进入国际市场的通行证。对于开关电源来说，由于开关管、整流管工作在大电流、高电压的条件下，对外界会产生很强的电磁干扰，因此开关电源相对其它产品来说更加难以实现电磁兼容。At present, the electromagnetic compatibility of electronic products has received more and more attention. Especially in developed countries in the world, a complete electromagnetic compatibility system has been formed. At the same time, China is also establishing an electromagnetic compatibility system. Therefore, the electromagnetic compatibility of products is realized. Passes to enter the international market. For the switching power supply, since the switching tube and the rectifier tube operate under conditions of high current and high voltage, strong electromagnetic interference is generated to the outside world, so the switching power supply is more difficult to achieve electromagnetic compatibility than other products.
开关电源的传导骚扰是通过电源的输入电源线向外传播的电磁干扰，测试频率范围为150kHz～30MHz，限值如下表一所示The conducted disturbance of the switching power supply is electromagnetic interference that propagates outward through the input power line of the power supply. The test frequency ranges from 150 kHz to 30 MHz, and the limits are as shown in Table 1 below.
表一Table I
通常，为满足电源端口传导骚扰限值，会在开关电源与电源输入线之间增
加滤波电路。该电路的作用是减小沿电源输入线传播的开关电源的传导骚扰。在业界，常见的滤波电路由电感和电容组成，如图1所示。电源端口传导骚扰不满足限值线要求，是电源端口常见的电磁兼容问题。要解决该问题，首先需要了解电磁兼容问题的三个要素：骚扰源、耦合途径、接收器。Usually, to meet the power port conduction disturbance limit, it will increase between the switching power supply and the power input line.
Add filter circuit. The purpose of this circuit is to reduce the conducted disturbance of the switching power supply that propagates along the power input line. In the industry, common filter circuits consist of inductors and capacitors, as shown in Figure 1. The power port conduction disturbance does not meet the limit line requirements, which is a common electromagnetic compatibility problem of the power port. To solve this problem, we first need to understand the three elements of the electromagnetic compatibility problem: the source of disturbance, the coupling path, and the receiver.
骚扰源：发射干扰的源头Source of disturbance: the source of the interference
耦合途径：传播干扰的载体Coupling pathway: carrier for propagation interference
接收器：被干扰的对象Receiver: the object being disturbed
通常针对该三要素中的任意一个实施有效对策方案，都能够解决问题。Usually, an effective countermeasure solution is implemented for any of the three elements, and the problem can be solved.
随着电源功率越来越高，器件布局密度越来越大，电源内部及内外部电磁耦合问题也越来越严重。而常见的开关电源与滤波电路的电磁耦合则会导致滤波电路的滤波效果降低，从而导致电源传导骚扰测试不通过，成为电源产品设计的痛点。As the power supply is getting higher and higher, the device layout density is getting larger and larger, and the electromagnetic coupling problem inside and outside the power supply is becoming more and more serious. However, the electromagnetic coupling between the common switching power supply and the filter circuit will result in a decrease in the filtering effect of the filter circuit, which will result in the power conduction disturbance test not passing, which becomes a pain point for the design of the power supply product.
发明内容Summary of the invention
本发明提供了一种电感、变压器及电气设备，用以改善电感和变压器的漏磁情况，提高电气设备的电磁兼容性。The invention provides an inductor, a transformer and an electrical device for improving the magnetic flux leakage of the inductor and the transformer and improving the electromagnetic compatibility of the electrical device.
第一方面，提供了一种电感，该电感包括：In a first aspect, an inductor is provided, the inductor comprising:
线圈；Coil
与所述线圈电绝缘的金属导体，所述金属导体设置在切割所述线圈漏磁通磁力线的位置，且所述金属导体感应形成抑制所述线圈漏磁的磁场。a metal conductor electrically insulated from the coil, the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
在上述技术方案中，通过设置的金属导体感应形成抑制所述线圈漏磁的磁场与漏磁抵消，从而降低了电子产品漏磁对其他电子产品的影响，提高了电子产品之间电磁兼容的效果。In the above technical solution, the magnetic field and the magnetic flux leakage cancellation for suppressing the magnetic flux leakage of the coil are formed by induction of the metal conductor, thereby reducing the influence of magnetic leakage of the electronic product on other electronic products, and improving the electromagnetic compatibility between the electronic products. .
在一个具体的方案中，该电感还包括铁芯，所述线圈缠绕在所述铁芯上，且所述金属导体固定在所述铁芯上。通过铁芯支撑线圈，且将金属导体设置在铁芯上，方便金属导体的固定。In a specific aspect, the inductor further includes a core, the coil is wound on the core, and the metal conductor is fixed on the core. The coil is supported by the iron core, and the metal conductor is placed on the iron core to facilitate the fixing of the metal conductor.
在具体设置时，金属导体可以采用不同的结构，在铁芯采用回字形结构，
时，金属导体采用框形金属导体，在铁芯采用柱状结构时，金属导体采用平板型金属导体。In the specific setting, the metal conductor can adopt different structures, and the iron core adopts a back-shaped structure.
When the metal conductor is a columnar metal conductor, the metal conductor is a flat metal conductor.
为了使得尽可能多的磁力线穿过金属导体，在金属导体设置时，所述金属导体与所述线圈之间的距离小于10mm。从而保证尽可能多的磁力线穿过金属导体，在一个优选的实施例中，较佳的，所述金属导体与所述线圈之间的距离介于2～5mm。In order to allow as many magnetic lines of force as possible to pass through the metal conductor, the distance between the metal conductor and the coil is less than 10 mm when the metal conductor is placed. Thereby ensuring as many magnetic lines of force as possible through the metal conductor, in a preferred embodiment, preferably the distance between the metal conductor and the coil is between 2 and 5 mm.
为了进一步的提高磁力线穿过金属导体，更佳的，所述金属导体与所述线圈轴线的夹角介于60°～90°之间。In order to further improve the magnetic flux passing through the metal conductor, more preferably, the angle between the metal conductor and the coil axis is between 60° and 90°.
为了提高消磁的效果，较佳的，金属导体包括多层层叠的金属片状结构。通过每层金属片状结构形成的磁场进行消磁。In order to enhance the effect of degaussing, it is preferred that the metal conductor comprises a multi-layer laminated metal sheet structure. Demagnetization is performed by a magnetic field formed by each layer of metal sheet structure.
第二方面，提供了一种变压器，该变压器包括：In a second aspect, a transformer is provided, the transformer comprising:
铁芯：Iron core:
缠绕在所述铁芯上的线圈；a coil wound on the iron core;
与所述线圈电绝缘的金属导体，所述金属导体设置在切割所述线圈漏磁通磁力线的位置，且所述金属导体感应形成抑制所述线圈漏磁的磁场。a metal conductor electrically insulated from the coil, the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
在上述技术方案中，通过设置的金属导体感应形成抑制所述线圈漏磁的磁场与漏磁抵消，从而降低了电子产品漏磁对其他电子产品的影响，提高了电子产品之间电磁兼容的效果。In the above technical solution, the magnetic field and the magnetic flux leakage cancellation for suppressing the magnetic flux leakage of the coil are formed by induction of the metal conductor, thereby reducing the influence of magnetic leakage of the electronic product on other electronic products, and improving the electromagnetic compatibility between the electronic products. .
在一个具体的实施例方式中，所述金属导体固定在所述铁芯上。方便金属导体的固定。In a specific embodiment, the metal conductor is attached to the core. Convenient for the fixing of metal conductors.
在具体设置时，金属导体可以采用不同的结构，在铁芯采用回字形结构，时，金属导体采用框形金属导体，在铁芯采用柱状结构时，金属导体采用平板型金属导体。In the specific setting, the metal conductor can adopt different structures. When the iron core adopts a retro-shaped structure, the metal conductor adopts a frame-shaped metal conductor, and when the iron core adopts a columnar structure, the metal conductor adopts a flat-plate type metal conductor.
为了使得尽可能多的磁力线穿过金属导体，在金属导体设置时，所述金属导体与所述线圈之间的距离小于10mm。从而保证尽可能多的磁力线穿过金属导体，在一个优选的实施例中，较佳的，所述金属导体与所述线圈之间的距离介于2～5mm。
In order to allow as many magnetic lines of force as possible to pass through the metal conductor, the distance between the metal conductor and the coil is less than 10 mm when the metal conductor is placed. Thereby ensuring as many magnetic lines of force as possible through the metal conductor, in a preferred embodiment, preferably the distance between the metal conductor and the coil is between 2 and 5 mm.
为了进一步的提高磁力线穿过金属导体，更佳的，所述金属导体与所述线圈轴线的夹角介于60°～90°之间。In order to further improve the magnetic flux passing through the metal conductor, more preferably, the angle between the metal conductor and the coil axis is between 60° and 90°.
为了提高消磁的效果，较佳的，金属导体包括多层层叠的金属片状结构。通过每层金属片状结构形成的磁场进行消磁。In order to enhance the effect of degaussing, it is preferred that the metal conductor comprises a multi-layer laminated metal sheet structure. Demagnetization is performed by a magnetic field formed by each layer of metal sheet structure.
此外，还提供了一种电气设备，该电气设备包括上述任一项所述的电感和/或上述任一项所述的变压器。Further, there is provided an electrical device comprising the inductor of any of the above and/or the transformer of any of the above.
在上述技术方案中，通过设置的金属导体感应形成抑制所述线圈漏磁的磁场与漏磁抵消，从而降低了电子产品漏磁对其他电子产品的影响，提高了电子产品之间电磁兼容的效果。In the above technical solution, the magnetic field and the magnetic flux leakage cancellation for suppressing the magnetic flux leakage of the coil are formed by induction of the metal conductor, thereby reducing the influence of magnetic leakage of the electronic product on other electronic products, and improving the electromagnetic compatibility between the electronic products. .
图1为现有技术中的电气设备的电磁兼容问题示意图；1 is a schematic diagram of electromagnetic compatibility problems of electrical equipment in the prior art;
图2为本发明实施例提供的电感的结构示意图；2 is a schematic structural diagram of an inductor according to an embodiment of the present invention;
图3为本发明另一实施例提供的电感的结构示意图；3 is a schematic structural diagram of an inductor according to another embodiment of the present invention;
图4为本发明实施例提供的楞次定律的原理图；4 is a schematic diagram of Lenz's law according to an embodiment of the present invention;
图5为本发明实施例提供的电感的原理图；FIG. 5 is a schematic diagram of an inductor according to an embodiment of the present invention; FIG.
图6a为现有技术中的电感的磁感应强度仿真图；6a is a simulation diagram of magnetic induction of an inductor in the prior art;
图6b为本发明实施例提供的电感的磁感应强度仿真图；6b is a simulation diagram of magnetic induction of an inductor according to an embodiment of the present invention;
图7a为现有技术中的电气设备采用现有技术中的电感时，电源传导骚扰实测图；FIG. 7a is a schematic diagram of power conduction disturbance when the electrical equipment in the prior art adopts the inductance in the prior art; FIG.
图7b为本发明实施例提供的电气设备采用本发明实施例提供的电感时，电源传导骚扰实测图。FIG. 7b is a schematic diagram of a power conduction disturbance when an electrical device according to an embodiment of the present invention is used in an embodiment of the present invention.
附图标记：Reference mark:
10-铁芯 20-线圈 30-金属导体10-iron core 20-coil 30-metal conductor
以下结合附图对本发明的具体实施例进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative and not restrictive.
在本发明的实施例中，为了解决电子产品的电磁兼容问题，本实施例提供的电感或变压器根据楞次定律设置了消磁结构，以减少电子产品中产生的电磁干扰。其中电感及变压器产生电磁的部分均是线圈，且在本实施例中，电感与变压器中的消磁结构相同，下面首先说明电感的消磁结构。In the embodiment of the present invention, in order to solve the electromagnetic compatibility problem of the electronic product, the inductor or the transformer provided by the embodiment provides a degaussing structure according to Lenz's law to reduce electromagnetic interference generated in the electronic product. The part in which the inductor and the transformer generate electromagnetic are both coils, and in the present embodiment, the inductance is the same as the degaussing structure in the transformer, and the degaussing structure of the inductor is first described below.
本发明实施例提供了一种电感，该电感包括：An embodiment of the present invention provides an inductor, where the inductor includes:
线圈；Coil
与所述线圈电绝缘的金属导体，所述金属导体设置在切割所述线圈漏磁通磁力线的位置，且所述金属导体感应形成抑制所述线圈漏磁的磁场。a metal conductor electrically insulated from the coil, the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
在上述实施例中，通过设置的金属导体感应形成抑制所述线圈漏磁的磁场与漏磁抵消，从而降低了电子产品漏磁对其他电子产品的影响，提高了电子产品之间电磁兼容的效果。In the above embodiment, the magnetic field and the magnetic flux leakage cancellation for suppressing the magnetic flux leakage of the coil are formed by the metal conductor provided, thereby reducing the influence of magnetic leakage of the electronic product on other electronic products, and improving the electromagnetic compatibility between the electronic products. .
为了方便对本发明实施例提供的电感的理解，下面结合具体的实施例进行详细的说明。In order to facilitate the understanding of the inductor provided by the embodiment of the present invention, a detailed description will be made below in conjunction with a specific embodiment.
为了方便理解本发明实施例提供的电感，下面详细说明本实施例采用的原理，如图5所示，根据楞次定律，当电感线圈通入交变电流时，线圈就产生交变磁场H1，该交变磁场H1在金属导体上会形成涡流，同时涡流产生感应磁场H2，H2与线圈产生的磁场H1方向相反，从而减弱了电感线圈的磁场辐射及耦合能力。In order to facilitate understanding of the inductance provided by the embodiment of the present invention, the principle adopted in this embodiment is described in detail below. As shown in FIG. 5, according to Lenz's law, when the inductor coil is connected to an alternating current, the coil generates an alternating magnetic field H1. The alternating magnetic field H1 forms a eddy current on the metal conductor, and the eddy current generates an induced magnetic field H2, which is opposite to the magnetic field H1 generated by the coil, thereby weakening the magnetic field radiation and coupling ability of the inductor.
通过上述原理可以看出，在本实施例中，通过设置的金属导体可以有效地降低线圈的磁场辐射，提高电子产品之间的兼容性。It can be seen from the above principle that in the present embodiment, the magnetic field radiation of the coil can be effectively reduced by the disposed metal conductor, and the compatibility between the electronic products is improved.
如图2所示，在一个具体的实施例中，该电感还包括铁芯10，所述线圈20缠绕在所述铁芯10上，且所述金属导体30固定在所述铁芯10上。通过铁芯10支撑线圈20，且将金属导体30设置在铁芯10上。在具体设置时，线圈20直接缠绕在铁芯10，该铁芯10的形状可以选择不同的形状，既可以选择柱状的结构，线圈20在缠绕时，可以外露在铁芯10的外部，也可以采用铁芯10将线圈20包裹起来，如图2所示。或者根据实际情况需要，金属导体30可以具有穿孔结构，如图3所示。在实际生产中，可以根据所需选择不同
的铁芯10。As shown in FIG. 2, in a specific embodiment, the inductor further includes a core 10, the coil 20 is wound on the core 10, and the metal conductor 30 is fixed on the core 10. The coil 20 is supported by the iron core 10, and the metal conductor 30 is placed on the iron core 10. In a specific arrangement, the coil 20 is directly wound around the iron core 10. The shape of the iron core 10 can be selected from different shapes, and a columnar structure can be selected. When the coil 20 is wound, it can be exposed to the outside of the iron core 10, or The coil 20 is wrapped with a core 10 as shown in FIG. Or, according to actual needs, the metal conductor 30 may have a perforated structure, as shown in FIG. In actual production, you can choose according to your needs.
The iron core 10.
在具体设置时，金属导体30可以设置在不同的部件上，只需要满足线圈20发射出的交变磁场的磁场线能够穿过金属导体30即可。作为一种优选的实施例，金属导体30固定在所述铁芯10上，从而方便金属导体30的设置。并且在采用这种结构时，不影响器件散热和***散热；具体的，由于该方案增加的金属结构通常为平面结构，非密封结构，所以基本不影响器件本身的散热性。同时由于金属导体30设置在铁芯10上，应用该方案的磁性器件原始形态基本不变，所以对***散热没有影响，不会出现阻碍风道的情况。并且采用上述结构进行消磁时，消磁结构结构简单，易加工，可实现批量生产；具体的：该方案可以在电感出厂前完成，且结构简单，可实现批量生产。作为电感整体器件来说，不增加生产加工环节。In a specific arrangement, the metal conductors 30 may be disposed on different components, and only the magnetic field lines satisfying the alternating magnetic field emitted by the coil 20 may pass through the metal conductors 30. As a preferred embodiment, the metal conductor 30 is attached to the core 10 to facilitate the placement of the metal conductor 30. Moreover, when adopting such a structure, the heat dissipation of the device and the heat dissipation of the system are not affected; in particular, since the metal structure added by the solution is generally a planar structure and a non-sealed structure, the heat dissipation of the device itself is not substantially affected. At the same time, since the metal conductor 30 is disposed on the iron core 10, the original shape of the magnetic device applying the scheme is substantially unchanged, so that there is no influence on the heat dissipation of the system, and there is no obstacle to the air passage. Moreover, when the above structure is used for degaussing, the degaussing structure is simple in structure, easy to process, and can be mass-produced; the specific: the solution can be completed before the inductor leaves the factory, and the structure is simple, and mass production can be realized. As an integral device of the inductor, it does not increase the production and processing links.
金属导体30为框形金属导体30或平板型金属导体30。具体的，如图2所示，在铁芯10采用柱状结构时，金属导体30为平板型金属导体30；如图3所示，在铁芯10采用回字形结构时，金属导体30为框形的金属导体30。无论金属导体30采用上述的哪种结构，金属导体30均为片状的结构，该金属导体30可以采用不同的金属制作，如金属导体30结构可以是铜箔、铝箔等电导率高的材料制作，且该金属导体30的厚度小的金属平面，在一个优选的实施例中，金属导体30可以采用多层结构设置，具体的，为了提高消磁的效果，金属导体30包括多层层叠的金属片状结构。通过每层金属片状结构形成的磁场进行消磁。在使用时，每个金属片状结构会产生一个感应磁场，且该感应磁场的方向与线圈20形成的交变磁场的方向相反，通过形成的多个感应磁场共同抵消交变磁场，从而进一步的降低了漏磁，提高了电子产品之间的磁场兼容性。The metal conductor 30 is a frame-shaped metal conductor 30 or a flat metal conductor 30. Specifically, as shown in FIG. 2, when the iron core 10 adopts a columnar structure, the metal conductor 30 is a flat metal conductor 30; as shown in FIG. 3, when the iron core 10 adopts a back-shaped structure, the metal conductor 30 has a frame shape. Metal conductor 30. Regardless of the above structure of the metal conductor 30, the metal conductor 30 is a sheet-like structure, and the metal conductor 30 can be made of a different metal. For example, the metal conductor 30 can be made of a material having high electrical conductivity such as copper foil or aluminum foil. And the metal plane 30 has a small metal plane. In a preferred embodiment, the metal conductor 30 can be disposed in a multi-layer structure. Specifically, in order to enhance the degaussing effect, the metal conductor 30 includes a plurality of stacked metal sheets. Structure. Demagnetization is performed by a magnetic field formed by each layer of metal sheet structure. In use, each metal sheet structure generates an induced magnetic field, and the direction of the induced magnetic field is opposite to the direction of the alternating magnetic field formed by the coil 20, and the alternating magnetic field is formed to cancel the alternating magnetic field together, thereby further Reduced magnetic flux leakage and improved magnetic field compatibility between electronic products.
作为一种更佳的实施例，在具体设置时，金属导体30与所述线圈20轴线的夹角介于60°～90°之间。从而保证了更多的磁力线穿过金属导体30产生涡流，增加感应电场的强度，进一步降低磁场的耦合效应。具体的，金属导体30与线圈20轴线之间的夹角(即金属表面与线圈20轴线的夹角)可以为
60°、70°、80°、90°等任意介于60°～90°之间的角度。较佳的，金属导体30的表面方向与漏磁通磁力线方向可以做到尽量垂直，且与器件距离近，可以贴合紧密，能够最大程度上抑制磁性器件的辐射/耦合；参考图4可以看出，线圈20产生的磁场的磁力线在线圈20外部，从线圈20的一端射出，另一端接收，位于线圈20端部的磁力线最密集，因此，当金属导体30的表面垂直于线圈20的轴线时，能够有更多的磁力线穿过金属导体30形成涡流，以增大感应磁场的强度。As a preferred embodiment, the angle of the metal conductor 30 to the axis of the coil 20 is between 60 and 90 in a particular arrangement. Thereby, more magnetic lines of force are ensured to generate eddy currents through the metal conductor 30, increasing the intensity of the induced electric field and further reducing the coupling effect of the magnetic field. Specifically, the angle between the metal conductor 30 and the axis of the coil 20 (ie, the angle between the metal surface and the axis of the coil 20) may be
60°, 70°, 80°, 90°, etc., any angle between 60° and 90°. Preferably, the surface direction of the metal conductor 30 and the magnetic flux line of the leakage flux can be as perpendicular as possible, and the distance from the device is close, and the film can be closely attached to minimize the radiation/coupling of the magnetic device; The magnetic field lines of the magnetic field generated by the coil 20 are outside the coil 20, are emitted from one end of the coil 20, and the other end receives the magnetic lines of force at the end of the coil 20, so that when the surface of the metal conductor 30 is perpendicular to the axis of the coil 20, There can be more magnetic lines of force passing through the metal conductor 30 to form a vortex to increase the strength of the induced magnetic field.
更进一步的，由图4可以看出，为了使得更多的磁力线穿过金属导体30，金属导体30距离线圈20端部的距离越小越好，作为一种具体的实施例，所述金属导体30与所述线圈20之间的距离小于10mm。应当理解的是，金属导体30与线圈20之间绝缘，因此，两者之间的最小距离大于0，避免金属导体30与线圈20出现接触。作为一种更佳的实施例，所述金属导体30与所述线圈20之间的距离介于2～5mm。如2mm、3mm、4mm、5mm等任意介于2～5mm之间的距离。Further, as can be seen from FIG. 4, in order to allow more magnetic lines of force to pass through the metal conductor 30, the smaller the distance of the metal conductor 30 from the end of the coil 20, the better. As a specific embodiment, the metal conductor The distance between 30 and the coil 20 is less than 10 mm. It should be understood that the metal conductor 30 is insulated from the coil 20 such that the minimum distance between the two is greater than zero to avoid contact of the metal conductor 30 with the coil 20. As a more preferred embodiment, the distance between the metal conductor 30 and the coil 20 is between 2 and 5 mm. For example, 2mm, 3mm, 4mm, 5mm, etc., any distance between 2 and 5mm.
为了方便理解本实施例提供的电感的消磁效果，下面结合仿真实验对其进行详细的说明。In order to facilitate understanding of the degaussing effect of the inductor provided by the embodiment, the following detailed description will be made in conjunction with the simulation experiment.
如图6a和图6b所示，其中，图6a为现有技术中没有采用消磁结构的功率电感上方10mm处磁感应强度仿真。图6b为本实施例提供的功率电感上方10mm处磁感应强度仿真。该仿真采用基于Maxwell软件，针对应用本发明方案前后，功率电感正上方10mm处投影平面的磁感应强度幅度仿真云图。该云图为15级色阶，由蓝色到红色表示磁感应强度逐渐递增5.31倍，蓝色表示磁感应强度为2.6006E-05T(T：特斯拉)，红色表示磁感应强度为1.3810E-04T。As shown in FIG. 6a and FIG. 6b, FIG. 6a is a simulation of magnetic induction at 10 mm above the power inductor without the degaussing structure in the prior art. FIG. 6b is a simulation of magnetic induction intensity at 10 mm above the power inductor provided by the embodiment. The simulation uses Maxwell software to simulate a cloud image of the magnetic induction intensity amplitude of the projection plane at 10 mm directly above the power inductor before and after applying the inventive scheme. The cloud image is a 15-level color gradation. From blue to red, the magnetic induction intensity is gradually increased by 5.31 times, blue indicates a magnetic induction intensity of 2.6006E-05T (T: Tesla), and red indicates a magnetic induction intensity of 1.3810E-04T.
为了进一步说明本实施例提供的电感的消磁效果，如图7a和图7b所示，图7a为现有技术中未采用消磁效果的电感的实测图，图7b为本发明实施例提供的电感的实测图。该测试为某设备电源端口传导噪声频谱图，测试方法及
测试布置参考EN 55022:2010 9.5章节。该频谱图中有两条限值线，两条频谱曲线。其中限值线为EN 55022：2010 5.1章节中规定的电源端口CLASS B限制线，分为Quasi-peak Limits和Average Limits。两条频谱曲线分别为两种不同检波方式(average detector和peak detector)对应的电源端口噪声频谱。由图7a和图7b的对比可以看出，本实施例提供的电感具有良好的消磁效果。To further illustrate the degaussing effect of the inductor provided in this embodiment, as shown in FIG. 7a and FIG. 7b, FIG. 7a is a measured view of an inductor that does not use a degaussing effect in the prior art, and FIG. 7b is an inductor of the embodiment of the present invention. Actual map. This test is a spectrum diagram of the conduction noise of a device power port, the test method and
The test arrangement is referred to EN 55022:2010 Section 9.5. There are two limit lines and two spectrum curves in the spectrum. The limit line is the power port CLASS B limit line specified in section 5.1 of EN 55022:2010, which is divided into Quasi-peak Limits and Average Limits. The two spectral curves are the power port noise spectra corresponding to the two different detection methods (average detector and peak detector). It can be seen from the comparison of FIG. 7a and FIG. 7b that the inductor provided by this embodiment has a good degaussing effect.
通过上述描述可以看出，本实施例提供的电感在采用消磁结构后具有良好的消磁效果，在采用上述结构时，不需要增加电源与功率电感之间的距离，也不需要金属结构屏蔽隔离。PCB布局面积零增加，且成本增加较低。且在一个具体实施例中，某电源模块与防雷功率电感近场磁场耦合导致电源传导骚扰测试超过限制线，在应用本技术方案后，电源传导骚扰测试数据减小6dB，保证了测试结果满足限制线要求。It can be seen from the above description that the inductor provided in this embodiment has a good degaussing effect after adopting the degaussing structure. When the above structure is adopted, the distance between the power source and the power inductor is not required, and the metal structure shielding isolation is not required. The PCB layout area is increased by zero and the cost increase is low. In a specific embodiment, the coupling of a power module to the near-field magnetic field of the lightning protection power inductor causes the power conduction disturbance test to exceed the limit line. After applying the technical solution, the power conduction disturbance test data is reduced by 6 dB, thereby ensuring that the test result is satisfied. Limit line requirements.
并且在采用上述消磁结构时，由于采用一个设置在铁芯10上的金属导体30进行消磁，且通常只需要在电感上与漏磁通磁力线垂直的某一个特定表面增加一个面积很小的金属结构(如铜箔)，成本非常低；并且原因：由于增加的金属结构通常为平面结构，厚度一般不超过1mm，基本上可以做到不影响PCB布局面积，对磁性器件原始形态及尺寸改变较小，对整个设备的影响可以忽略不计。Moreover, when the above-described degaussing structure is employed, since a metal conductor 30 disposed on the core 10 is used for degaussing, it is usually only necessary to add a metal structure having a small area to a specific surface of the inductor perpendicular to the magnetic flux of the leakage flux. (such as copper foil), the cost is very low; and the reason: because the added metal structure is usually a planar structure, the thickness generally does not exceed 1mm, basically can not affect the PCB layout area, the original shape and size of the magnetic device change less The impact on the entire device is negligible.
本实施例还提供了一种变压器，该变压器包括：This embodiment also provides a transformer, the transformer comprising:
铁芯：Iron core:
缠绕在所述铁芯上的线圈；a coil wound on the iron core;
与所述线圈电绝缘的金属导体，所述金属导体设置在切割所述线圈漏磁通磁力线的位置，且所述金属导体感应形成抑制所述线圈漏磁的磁场。a metal conductor electrically insulated from the coil, the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
在上述实施例中，变压器中产生漏磁的也是线圈，进行消磁的也是采用金属导体，其结构以及原理与本实施例提供的电感的结构与原理相近似，在此不再详细的描述。In the above embodiment, the magnetic flux is also generated in the transformer, and the metal conductor is also used for degaussing. The structure and principle of the inductor are similar to those of the inductor provided in this embodiment, and will not be described in detail herein.
在具体限定是，金属导体的形状、设置方式以及与线圈的距离与本实施
例提供的电感中的金属导体相同，即：所述金属导体固定在所述铁芯上。且所述金属导体为框形金属导体或平板型金属导体。在具体设置时，所述金属导体与所述线圈之间的距离小于10mm。作为一种优选的实施例，所述金属导体与所述线圈之间的距离介于2～5mm。更佳的，所述金属导体与所述漏磁通磁力线之间的夹角介于60°～90°之间。通过上述限定可以看出，本实施例提供的变压器的金属导体的形状及设置方式与本实施例提供的电感相同，在此不再详细赘述。Specifically, the shape, arrangement, and distance from the coil are the same as the present embodiment.
The metal conductors in the inductors provided are the same, ie the metal conductors are fixed to the core. And the metal conductor is a frame metal conductor or a flat metal conductor. In a specific arrangement, the distance between the metal conductor and the coil is less than 10 mm. As a preferred embodiment, the distance between the metal conductor and the coil is between 2 and 5 mm. More preferably, the angle between the metal conductor and the leakage flux magnetic field line is between 60° and 90°. It can be seen from the above definition that the shape and arrangement of the metal conductor of the transformer provided in this embodiment are the same as those provided in this embodiment, and details are not described herein again.
此外，本实施例还提供了一种电气设备，该电气设备包括上述的电感以及上述的变压器。In addition, the present embodiment also provides an electrical device including the above-described inductor and the above-described transformer.
具体的，该电气设备包括开关电源，与开关电源连接的滤波电路以及与滤波器连接的接收器，其中，开关电源内设置有变压器，接收器内设置有功率电感。该变压器及功率电感上至少一个设置有金属导体进行消磁，从而避免了电气设备在使用时，开关电源与接收器之间出现耦合情况，提高了电气设备的使用效果。Specifically, the electrical device includes a switching power supply, a filter circuit connected to the switching power supply, and a receiver connected to the filter, wherein the switching power supply is provided with a transformer, and the power inductor is disposed in the receiver. At least one of the transformer and the power inductor is provided with a metal conductor for degaussing, thereby avoiding coupling between the switching power supply and the receiver when the electrical device is in use, thereby improving the use effect of the electrical device.
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。
It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention
Claims (15)
- 一种电感，其特征在于，包括：An inductor characterized by comprising:线圈；Coil与所述线圈电绝缘的金属导体，所述金属导体设置在切割所述线圈漏磁通磁力线的位置，且所述金属导体感应形成抑制所述线圈漏磁的磁场。a metal conductor electrically insulated from the coil, the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
- 如权利要求1所述的电感，其特征在于，还包括铁芯，所述线圈缠绕在所述铁芯上，且所述金属导体固定在所述铁芯上。The inductor according to claim 1, further comprising a core, said coil being wound on said core, and said metal conductor being fixed to said core.
- 如权利要求2所述的电感，其特征在于，所述金属导体为框形金属导体或平板型金属导体。The inductor according to claim 2, wherein said metal conductor is a frame metal conductor or a flat metal conductor.
- 如权利要求1所述的电感，其特征在于，所述金属导体与所述线圈之间的距离小于10mm。The inductor of claim 1 wherein the distance between the metal conductor and the coil is less than 10 mm.
- 如权利要求4所述的电感，其特征在于，所述金属导体与所述线圈之间的距离介于2～5mm。The inductor according to claim 4, wherein a distance between said metal conductor and said coil is between 2 and 5 mm.
- 如权利要求1～5任一项所述的电感，其特征在于，所述金属导体与所述线圈轴线的夹角介于60°～90°之间。The inductor according to any one of claims 1 to 5, wherein an angle between the metal conductor and the coil axis is between 60° and 90°.
- 如权利要求6所述的电感，其特征在于，所述金属导体包括多层层叠的金属片状结构。The inductor of claim 6 wherein said metal conductor comprises a plurality of stacked metal sheet structures.
- 一种变压器，其特征在于，包括：A transformer characterized in that it comprises:铁芯：Iron core:缠绕在所述铁芯上的线圈；a coil wound on the iron core;与所述线圈电绝缘的金属导体，所述金属导体设置在切割所述线圈漏磁通磁力线的位置，且所述金属导体感应形成抑制所述线圈漏磁的磁场。a metal conductor electrically insulated from the coil, the metal conductor being disposed at a position where a magnetic flux line of the coil leakage flux is cut, and the metal conductor induces a magnetic field that suppresses magnetic flux leakage of the coil.
- 如权利要求8所述的变压器，其特征在于，所述金属导体固定在所述铁芯上。The transformer of claim 8 wherein said metal conductor is attached to said core.
- 如权利要求9所述的变压器，其特征在于，所述金属导体为框形金属导体或平板型金属导体。 The transformer according to claim 9, wherein said metal conductor is a frame metal conductor or a flat metal conductor.
- 如权利要求8所述的变压器，其特征在于，所述金属导体与所述线圈之间的距离小于10mm。The transformer of claim 8 wherein the distance between said metal conductor and said coil is less than 10 mm.
- 如权利要求11所述的变压器，其特征在于，所述金属导体与所述线圈之间的距离介于2～5mm。The transformer of claim 11 wherein the distance between said metal conductor and said coil is between 2 and 5 mm.
- 如权利要求8～12任一项所述的变压器，其特征在于，所述金属导体与所述线圈轴线的夹角介于60°～90°之间。A transformer according to any one of claims 8 to 12, wherein the angle between the metal conductor and the coil axis is between 60 and 90 degrees.
- 如权利要求13所述的变压器，其特征在于，所述金属导体包括多层层叠的金属片状结构。The transformer of claim 13 wherein said metal conductor comprises a plurality of laminated metal sheet structures.
- 一种电气设备，其特征在于，包括如权利要求1～7任一项所述的电感和/或如权利要求8～14任一项所述的变压器。 An electrical device comprising the inductor according to any one of claims 1 to 7 and/or the transformer according to any one of claims 8 to 14.
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