Double-split cable magnetic decoupling device, cable system, manufacturing method and assembling method

Abstract

The invention relates to a double-split cable magnetic decoupling device, a cable system, a manufacturing method and an assembling method, and is applied to the field of an electromagnetic compatibility technology. The magnet comprises a magnet with at least one annular through hole, the annular through hole is used for the double-split cable to penetrate through, and a gap is formed between the inner wall of the annular through hole and the outer edge of the double-split cable; wherein the magnet is made of a high-permeability material, so that an interference magnetic field generated by the double-split cable can be absorbed by the magnet. Through the arrangement of the annular structure of the magnet and the selection of the high-permeability material, the magnetic field distribution around the cable is optimized, so that the magnetic ring can effectively guide and concentrate the current, and the mutual magnetic field interference between the cables is inhibited. The magnetic ring is made of a high-permeability magnetic material, has excellent magnetic performance, and can effectively suppress radiation and interference of high-frequency signals in a broadband range.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic compatibility technology, and in particular to a double-split cable magnetic decoupling device, a cable system, a manufacturing method and an assembly method. Background Art

[0002] The cable transmission method has high reliability and is not easily affected by external environmental and climatic factors. It also saves land space and improves the neatness and beauty of the city. The transmission capacity of a single high-voltage cable can no longer meet the growing load demand. Therefore, it is necessary to improve the carrying capacity of the cable.

[0003] The most effective way to increase transmission capacity is to use a double-split cable for transmission. When using a double-split (co-phase parallel) cable for transmission, the two sub-cables running in parallel will transmit unbalanced currents due to factors of the line itself, mainly including line differences caused by differences in path length and manufacturing processes, impedance asymmetry caused by electromagnetic coupling between multiple cables, and other factors that are difficult to completely avoid.

[0004] The split cables connected in parallel in the same phase may cause different degrees of insulation aging and life span of the two parallel sub-cables under unbalanced working conditions, and may even directly lead to thermal breakdown. Mainly due to the complex electromagnetic relationship between the cables, the current carrying capacity of the same-phase cable lines may be different. This current imbalance will affect the normal operation of power equipment.

[0005] Therefore, it is necessary to design a device that can suppress the electromagnetic coupling between the double-split cables to reduce the unbalance of the double-split cables and increase the operating stability of the double-split cable transmission system. Summary of the invention

[0006] Based on this, it is necessary to provide a double-split cable magnetic decoupling device, manufacturing method, cable system and assembly method to address the problem that electromagnetic coupling exists in cable components arranged in parallel, which affects the quality and reliability of electromagnetic signal and power transmission.

[0007] In a first aspect, the present application provides a double-split cable magnetic decoupling device, which adopts the following technical solution:

[0008] A double-split cable magnetic decoupling device comprises a magnet, wherein the magnet has at least one annular through hole, wherein the annular through hole is used for the double-split cable to pass through, and a gap is formed between the inner wall of the annular through hole and the outer edge of the double-split cable; wherein the magnet is made of a high magnetic permeability material so that the interfering magnetic field generated by the double-split cable is absorbed by the magnet.

[0009] In one of the embodiments, the magnet is circular in shape; or, the magnet is an equilateral polygonal structure; and the annular through hole is located at the axial center of the magnet.

[0010] In one embodiment, the ratio of the inner diameter of the annular through hole to the diameter of the double-split cable is 2-5.

[0011] In one of the embodiments, the double-split cable magnetic decoupling device also includes a magnet skeleton and a plurality of skeleton support parts arranged in the magnet, wherein the magnet skeleton is inserted into the magnet along the axial direction of the magnet and is coaxially arranged with the magnet, and the outer wall of the magnet skeleton is spaced apart from the inner wall of the magnet; all of the skeleton support parts are connected to the inner wall of the magnet skeleton and are spaced apart along the circumferential direction of the magnet skeleton, and the skeleton support parts extend radially along the magnet skeleton to support the magnet; the magnet skeleton is made of insulating material.

[0012] In one of the embodiments, the double-split cable magnetic decoupling device also includes a plurality of airway supports, an installation gap is formed between the magnet skeleton and the magnet, the airway supports are arranged in the installation gap and are evenly distributed along the circumference of the magnet skeleton; wherein the airway supports are made of insulating material.

[0013] In one of the embodiments, the double-split cable magnetic decoupling device further includes at least one cooling fan, and an air outlet of the cooling fan is arranged toward the annular through hole.

[0014] In a second aspect, the present application provides a cable system, which adopts the following technical solution:

[0015] A cable system comprises the above-mentioned double-split cable magnetic decoupling device and a double-split cable, wherein the double-split cable is passed through the annular through hole, and a spacing area is formed between the cables of the double-split cable. In the radial direction of the magnet, the size of the spacing area is less than or equal to 10% of the inner diameter of the magnet.

[0016] In a third aspect, the present application provides a manufacturing method for manufacturing a double-split cable magnetic decoupling device as shown in the above embodiment, the manufacturing method adopts the following steps:

[0017] Select and heat a high magnetic permeability material to a preset temperature;

[0018] shaping the heated material into a magnet having an annular through hole;

[0019] Cooling and hardening the formed magnet;

[0020] The magnets are inspected for size and performance.

[0021] In a fourth aspect, the present application provides an assembly method for assembling the above-mentioned double-split cable magnetic decoupling device to the double-split cable, wherein the assembly method adopts the following technical solution:

[0022] Passing the double-split cable through the annular through hole of the double-split cable magnetic decoupling device;

[0023] Adjust the position of the double-split cable magnetic decoupling device in the axial direction of the double-split cable;

[0024] fixing the double-split cable magnetic decoupling device to the double-split cable;

[0025] Perform performance tests on dual-split cables.

[0026] In one embodiment, the assembly method further comprises:

[0027] Based on the performance test results, magnetic components are added to the double-split cable magnetic decoupling device.

[0028] The above-mentioned double-split cable magnetic decoupling device aims to optimize the magnetic field distribution around the cable through the ring structure setting of the magnet and the selection of high magnetic permeability materials, so that the magnetic ring can effectively guide and concentrate the current and suppress the mutual magnetic field interference between the cables. The material of the magnetic ring is made of high magnetic permeability material with excellent magnetic properties, which can effectively suppress the radiation and interference of high-frequency signals in a wide frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a front view of a cable system in one embodiment of the present application.

[0030] Figure 2 It is a three-dimensional diagram of a cable system in one embodiment of the present application.

[0031] Notes on the attached drawings:

[0032] 1. Magnet; 11. Annular through hole; 2. Magnet skeleton; 3. Skeleton support; 4. Airway support; 5. Installation gap; 9. Double-split cable; 10. Spacing area; 12. Cooling fan. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] The cable transmission method has high reliability and is not easily affected by external environmental and climatic factors. It also saves land space and improves the neatness and beauty of the city. The transmission capacity of a single high-voltage cable can no longer meet the growing load demand. Therefore, it is necessary to improve the carrying capacity of the cable.

[0040] The most effective way to increase transmission capacity is to use a double-split cable for transmission. When using a double-split (co-phase parallel) cable for transmission, the two sub-cables running in parallel will transmit unbalanced currents due to factors of the line itself, mainly including line differences caused by differences in path length and manufacturing processes, impedance asymmetry caused by electromagnetic coupling between multiple cables, and other factors that are difficult to completely avoid.

[0041] The split cables connected in parallel in the same phase may cause different degrees of insulation aging and life span of the two parallel sub-cables under unbalanced working conditions, and may even directly lead to thermal breakdown. Mainly due to the complex electromagnetic relationship between the cables, the current carrying capacity of the same-phase cable lines may be different. This current imbalance will affect the normal operation of power equipment.

[0042] Specifically, for different application scenarios and application requirements, the following problems may exist:

[0043] ① System failure risk: Imbalance increases the probability of failures, such as cable short circuits or open circuits, which may cause the entire system to shut down, affecting the continuity of production and services.

[0044] ② High-frequency application requirements: With the development of emerging technologies such as 5G and the Internet of Things (IoT), the demand for high-frequency signal transmission is increasing, and the performance requirements for cables are also increasing accordingly. Traditional cable solutions can no longer meet these demands.

[0045] ③ Environmental protection requirements: Modern electronic equipment is paying more and more attention to environmental protection and sustainable development, and it is necessary to develop cables and accessories that meet green environmental protection standards to reduce the impact on the environment.

[0046] ④ Design complexity: Some existing solutions are complex in design, which increases the difficulty of system integration and increases the requirements for engineers accordingly.

[0047] ⑤ High cost: The high R&D and production costs of high-performance cables and accessories limit their promotion in large-scale applications.

[0048] In order to solve these problems, various methods have been tried in the prior art to reduce the unbalance of parallel cables. Common technologies include but are not limited to the following methods:

[0049] ① Cable shielding: Use a metal shielding layer on the outside of the cable to reduce the interference of the external magnetic field. However, this method has limited effect on mutual interference between cables.

[0050] ②Increase spacing: Reduce mutual influence by increasing the physical distance between cables. However, this may lead to complex wiring and is impractical in space-constrained applications.

[0051] ③ Use balanced cables: such as twisted pair cables, which cancel out interference by balancing opposite signal transmission paths. However, this solution may not be suitable for all types of cables or applications.

[0052] ④Signal processing technology: Use filters or equalizers to adjust the signal at the receiving end. Although effective, this will increase the complexity and cost of the system.

[0053] Although the above methods can reduce interference to a certain extent, they usually cannot completely eliminate electromagnetic coupling between cables, especially in high-frequency or high-power density applications. In addition, these methods may not be cost-effective or have practical limitations in implementation.

[0054] Therefore, a more effective, economical and practical technical solution is needed to reduce the imbalance of parallel cables and improve the quality and reliability of signal and power transmission. Therefore, the present application designs a device that can suppress electromagnetic coupling between double-split cables to reduce the imbalance of double-split cables and increase the operating stability of double-split cable power transmission systems.

[0055] The following is combined with Figure 1-2 The embodiments of the present application are described in further detail.

[0056] See also Figure 1 , Figure 1 A front view of a cable system in an embodiment of the present application is shown. An embodiment of the present application provides a double-split cable magnetic decoupling device, including a magnet 1 constructed in an annular structure, the magnet 1 having at least one annular through hole 11, and the double-split cable 9 can be passed through the magnet 1 with the aid of the annular through hole 11, and a gap is formed between the inner wall of the annular through hole 11 and the outer edge of the double-split cable 9, so as to facilitate the adjustment of the relative position of the double-split cable 9 and the magnet 1 in the axial direction, thereby adjusting the coupling degree between the cables and optimizing the signal transmission performance.

[0057] Among them, the magnet 1 is made of high magnetic permeability material, and the high magnetic permeability material is selected from at least one of ferrite, silicon steel sheet or nickel-zinc ferrite, and has excellent electromagnetic properties, so that the interference magnetic field generated by the double-split cable 9 can be transferred to the magnet 1 and the double-split cable 9 is isolated from the external magnetic field.

[0058] In the present application, the double-split cable magnetic decoupling device is constructed in a ring shape and is made of high magnetic permeability materials, aiming to optimize the magnetic field distribution around the double-split cable 9, so that the magnetic ring can effectively guide and concentrate the current and suppress the mutual magnetic field interference between the cables. The material of the magnetic ring is selected from high magnetic permeability materials, which have excellent magnetic properties and can effectively suppress the radiation and interference of high-frequency signals within a wide frequency band.

[0059] In the embodiment of the present application, only one annular through hole 11 is provided on the magnet 1, and each group of double-split cables 9 includes three separate cables, and the three cables are arranged in parallel with each other. In some other embodiments, for a multi-layer cable system, the magnet 1 may also have multiple annular through holes 11, and the double-split cables 9 of different layers pass through different annular through holes 11 on the magnet 1, respectively, to ensure that the electromagnetic coupling effect of each layer of double-split cables 9 is optimal. In addition, all the annular through holes 11 are gathered at the axial center position of the magnet 1, so that the magnetic field formed by the double-split cables 9 can be evenly distributed, and the mutual interference between the cables can be significantly reduced, and the signal transmission efficiency can be improved.

[0060] Continue reading Figure 1 As shown, in some embodiments, the magnet 1 is configured in a circular shape so that the magnetic field generated by the double-split cable 9 can achieve a uniform magnetic field distribution, significantly reducing electromagnetic interference between cables. In some other embodiments, the magnet 1 can also be configured in an elliptical structure; in some other embodiments, the magnet 1 can also be configured in an equilateral polygonal structure, and the equilateral arrangement can also ensure the uniform distribution of the magnetic field generated by the double-split cable 9.

[0061] In actual production, the operator can optimize the size of the magnet 1 according to the diameter and number of the cable conductors to maximize the uniformity of the magnetic field distribution and reduce the electromagnetic interference between the cables. In the embodiment of the present application, the ratio of the inner diameter of the annular through hole 11 on the magnet 1 to the diameter of the double-split cable 9 is 2 to 5 times to ensure the electromagnetic coupling effect.

[0062] Combination Figure 2 As shown, Figure 2A stereoscopic diagram of a cable system in an embodiment of the present application is shown. In some embodiments, the double-split cable magnetic decoupling device also includes a magnet skeleton 2 and a plurality of skeleton support parts 3 installed in the magnet 1. The magnet skeleton 2 and the skeleton support parts 3 are both located in the annular through hole 11, thereby realizing the connection and fixation between the double-split cable magnetic decoupling device and the double-split cable 9.

[0063] Specifically, the magnet frame 2 is constructed as a ring structure with the same shape as the magnet 1 but different size. The magnet frame 2 is inserted into the magnet 1 along the axial direction of the magnet 1 and is coaxially arranged with the magnet 1. Figure 2 As shown, taking the example of three skeleton support parts 3 corresponding to each double-split cable magnetic decoupling device, the three skeleton support parts 3 are all connected to the inner wall of the magnet skeleton 2 and are evenly distributed along the circumference of the magnet skeleton 2, and the skeleton support parts 3 extend along the radial direction of the magnet skeleton 2 and jointly support the outer wall of the double-split cable 9 to achieve effective fixation of the double-split cable magnetic decoupling device.

[0064] In addition, to ensure the stability of the magnet 1 in the cable system, the magnet skeleton 2 and the skeleton support part 3 are both constructed as adjustable structures in the present application. The skeleton support part 3 includes an arc plate for fitting the periphery of the double-split cable 9, and an extension plate for connecting the arc plate to the inner wall of the magnet skeleton 2. The extension plate is arranged along the radial extension of the magnet skeleton 2.

[0065] Among them, the extension plate and the arc plate, as well as the extension plate and the magnet skeleton 2 can be connected in a detachable manner, so that the overall radial size of the skeleton support part 3 in the magnet skeleton 2 can be adjusted to adapt to the assembly requirements of double-split cables 9 of different sizes, so that the entire cable system can still maintain stable operation under high vibration or other extreme conditions.

[0066] Furthermore, the skeleton support portion 3 is configured as a size-adjustable structure, which can facilitate the operator to move the double-split cable magnetic decoupling device on the double-split cable 9 along the axial direction of the double-split cable 9 to meet the installation requirements of double-split cables 9 of different lengths.

[0067] Furthermore, in some other embodiments, after the magnet skeleton 2 is inserted into the magnet 1 along the axial direction of the magnet 1, an installation gap 5 is formed between the outer wall of the magnet skeleton 2 and the inner wall of the magnet 1, and the double-split cable magnetic decoupling device also includes a plurality of airway supports 4 arranged in the installation gap 5.

[0068] Specifically, all the airway supports 4 are constructed into long strip structures and extend along the axial direction of the magnet 1. In the circumferential direction of the magnet 1, the airway supports 4 are spaced apart from each other and are evenly distributed, thereby fixing the relative position between the magnet frame 2 and the magnet 1 to ensure the stability of the magnet 1. In addition, it is precisely because of the arrangement of the airway supports 4 that a plurality of airways extending along the axial direction of the double-split cable 9 are formed between the magnet frame 2 and the magnet 1, which can effectively improve the heat dissipation effect of the cable system.

[0069] In the embodiment of the present application, the magnet skeleton 2 and the airway support 4 are both made of insulating materials, and the insulating materials can be but are not limited to lightweight and high-strength plastic or wood materials. This can reduce the weight of the double-split cable magnetic decoupling device and improve the durability of the double-split cable magnetic decoupling device. At the same time, it can also achieve isolation of voltage and current between the magnet 1 and the double-split cable 9, so as to achieve safety protection for personnel and equipment on the operating site, and effectively ensure the stable operation of the cable system.

[0070] In some other embodiments, the dual-split cable magnetic decoupling device shown in the present application can also be extended to the broadband balun design in the wireless communication system, using the ferrite magnetic ring to optimize the performance of the RF front end. In high-power transmission applications, the design of the dual-split cable magnetic decoupling device can not only reduce signal distortion, but also reduce the size of the device, solving the size problem in low-frequency signal transmission.

[0071] In addition, in some embodiments, the dual-split cable magnetic decoupling device integrates real-time monitoring and fault warning functions (not shown), and monitors the system status in real time through built-in temperature and electromagnetic sensors (not shown), ensuring its long-term stable operation under high load, and providing maintenance and replacement suggestions to improve the reliability of the overall system.

[0072] Combination Figure 1 and Figure 2 As shown, in some embodiments, the present application also provides a cable system, which includes a double-split cable magnetic decoupling device and a double-split cable 9 as shown in any of the above embodiments. In the embodiments of the present application, the length of the double-split cable magnetic decoupling device is designed to cover 20%-30% of the total length of the double-split cable 9 to ensure effective suppression of electromagnetic interference during signal transmission.

[0073] Specifically, the double-split cable 9 is composed of three independent cables connected in parallel. When viewed along the axial direction of the double-split cable 9, the cables in the double-split cable 9 are arranged in a "pin" shape, and the center distance between adjacent cables is kept at a certain distance, and they are surrounded together with other cables to form a blank spacing area 10. In the radial direction of the magnet 1, the size of the spacing area 10 is less than or equal to 10% of the inner diameter of the magnet 1 to ensure uniform signal distribution.

[0074] In addition, the operator can also use double-row or multi-layer arrangement to accurately adjust the arrangement of cables in the double-split cable magnetic decoupling device according to the actual requirements of frequency and current, so as to further improve the electromagnetic coupling effect between the cables and reduce the imbalance. In response to the signal transmission requirements of different frequencies, the position of the double-split cable magnetic decoupling device can be adjusted in real time through an automatic adjustment system (not shown) to ensure the best performance under different working conditions.

[0075] In some other embodiments, for more complex cable systems, the present application also proposes an adjustable double-double-split cable magnetic decoupling device (not shown), which is suitable for application scenarios that require dynamic adjustment of the electromagnetic field, such as magnetic confinement nuclear fusion devices. The dual magnetic ring design can flexibly control its electromagnetic field characteristics by adjusting the relative position of the magnetic rings, further reducing the imbalance and electromagnetic interference of the cable.

[0076] In actual application, one of the magnetic rings is used for the signal transmission layer of the cable, and the other is used for the shielding and interference suppression layer. The dual magnetic rings can work together to optimize the signal transmission requirements of different frequency bands, further reducing electromagnetic interference and signal attenuation.

[0077] The dual magnetic ring design can be applied to vacuum and non-vacuum environments, and by adjusting the magnetic field strength and direction, the optimized control of the parallel cable transmission signal can be achieved. By modulating the magnetic field strength, this application can further reduce the coupling distortion of signals of different frequencies and ensure the reliability of the system in a high electromagnetic environment.

[0078] The cable system has a simple overall structure and a modular design, which makes it easy to integrate into the existing cable system and simplifies the installation process. In addition, compared with other electromagnetic compatibility solutions, the cable system has a low production cost of magnetic rings, is easy to mass produce, and is suitable for applications of all sizes. It exhibits excellent stability under various environmental conditions, including high temperature, low temperature and humid environments, ensuring long-term reliable operation.

[0079] In addition, under high load conditions of parallel cables, the heat inside the cables cannot be effectively dissipated, which may cause aging and degradation of cable insulation materials, increasing potential safety risks. Moreover, under load changes, uneven current distribution between cables may cause some cables to be overloaded, further exacerbating cable heating and reducing overall system efficiency. Unbalanced current distribution and overheating can significantly reduce the service life of power equipment (such as transformers, switchgear, etc.), thereby increasing maintenance and replacement costs.

[0080] In view of the above problems, in some other embodiments, the cable system also has a special heat dissipation design, that is, the cable system also includes an active heat dissipation system, such as adding a micro heat dissipation fan 12 or a heat pipe heat dissipation device. The heat dissipation fan 12 is installed on the inner side of the magnet 1. The size and type of the heat dissipation fan 12 are selected according to the thermal management requirements of the magnetic ring. The installation position is calculated in detail to ensure that the heat can be effectively conducted and dissipated in time. This design is particularly suitable for high-power and high-frequency signal transmission scenarios, and can significantly reduce the operating temperature of the double-split cable magnetic decoupling device and extend its service life.

[0081] During actual assembly, the power supply design of the cooling fan 12 must ensure stability, and control noise and vibration to ensure that its operation does not generate additional electromagnetic interference to the cable system. Thermal simulation optimization is performed on the heat dissipation path to ensure that heat can be efficiently transferred from the double-split cable magnetic decoupling device to the heat dissipation system and to maintain the stability of the double-split cable magnetic decoupling device in a long-term high-temperature operating environment. The close integration of the heat dissipation design and the double-split cable magnetic decoupling device must also take into account the convenience of maintenance and replacement to ensure the operability and safety of the system.

[0082] In some embodiments, the present application further provides a manufacturing method, specifically a manufacturing method for manufacturing a double-split cable magnetic decoupling device as shown in the above embodiment, the manufacturing method comprising the following steps:

[0083] Step S11: selecting and heating a high magnetic permeability material to a preset temperature;

[0084] Step S12: shaping the heated material into a magnet 1 having an annular through hole 11;

[0085] Step S13: cooling and hardening the formed magnet 1;

[0086] Step S14: Detect the size and performance of the magnet 1.

[0087] In step S11: the operator selects a high magnetic permeability material according to the performance requirements of the double-split cable 9, and heats the high magnetic permeability material to a suitable temperature to improve the formability of the material. The high magnetic permeability material can specifically be a ferrite material (such as MnZn ferrite) to ensure that it can maintain a low magnetic permeability and a high resistivity at high frequencies, effectively reducing signal attenuation and reducing electromagnetic interference.

[0088] In step S12: the heated high magnetic permeability material is molded into a magnet 1 having an annular through hole 11 using a mold to ensure molding quality. Specifically, when manufacturing the magnet 1, the ferrite material is molded using a powder metallurgy process, firstly the ferrite powder is mixed with a binder, then pressed into an annular structure by a precision mold, and finally sintered in a high temperature furnace to ensure the structural integrity and magnetic properties of the magnet 1.

[0089] In step S13: the formed magnet 1 is cooled and hardened to ensure its mechanical strength and stability, thereby ensuring the overall structural strength of the double-split cable magnetic decoupling device.

[0090] In step S14: the size and performance of the double-split cable magnetic decoupling device are tested to ensure that it meets the design requirements, including magnetic permeability, mechanical strength and electromagnetic characteristics.

[0091] In the above embodiments, through the selection of high magnetic permeability materials, precise structural design and stable fixing mechanism, not only the electromagnetic compatibility (EMC) of the cable system is effectively improved, but also the signal transmission quality is optimized. It is particularly suitable for high-speed communications, industrial automation, automotive electronics, avionics and other fields, and has broad application prospects.

[0092] Specifically, the dual-split cable magnetic decoupling device is particularly suitable for application scenarios that require high data transmission rates and low signal attenuation, such as the following fields: High-speed communication systems: Ensure that the signal maintains low attenuation and distortion during transmission, and improve the reliability of data transmission. Precision electronic equipment: In electronic equipment that requires high precision, reduce electromagnetic interference and ensure the stable operation of the system. Power system: Effectively suppress electromagnetic interference in the power system, improve power quality, and reduce the risk of damage to equipment. Data communication: In data centers and communication infrastructure, ensure the efficiency and stability of signal transmission. Industrial automation: In industrial control systems, reduce interference and improve the operating efficiency and reliability of equipment. Automotive electronics: In automotive electronic equipment, reduce electromagnetic interference and ensure the stability of key systems (such as braking, navigation, and power systems). Avionics: In aerospace equipment, reduce electromagnetic interference and improve the safety and reliability of the system.

[0093] In some other embodiments, the present application further provides an assembly method for assembling the double-split cable magnetic decoupling device as shown in any of the above embodiments to the double-split cable 9, and the assembly method specifically comprises the following steps:

[0094] Step S21: inserting the double-split cable 9 into the annular through hole 11 of the double-split cable magnetic decoupling device;

[0095] Step S22: adjusting the position of the double-split cable magnetic decoupling device in the axial direction of the double-split cable 9;

[0096] Step S23: fixing the double-split cable magnetic decoupling device to the double-split cable 9;

[0097] Step S24: Performing a performance test on the dual-split cable 9.

[0098] In step S22: adjusting the position of the double-split cable magnetic decoupling device on the double-split cable to optimize the distribution of the electromagnetic field and ensure the uniformity of the magnetic field;

[0099] In step S23, with the aid of the size-adjustable structural design of the skeleton support portion 3, the double-split cable magnetic decoupling device is stably fixed on the double-split cable 9 to ensure the stability of the position of the double-split cable magnetic decoupling device on the double-split cable 9 and avoid abnormal displacement of the double-split cable magnetic decoupling device due to external factors, thereby ensuring the operational stability of the cable system and enabling the entire cable system to maintain stable operation under high vibration or other extreme conditions.

[0100] In step S24: the performance of the parallel cable system is tested to verify the effect of reducing the imbalance, wherein the performance test includes measuring the attenuation, distortion and electromagnetic compatibility of the signal at different frequencies.

[0101] In some other embodiments, the assembly method further includes step S25: adding magnetic components to the double-split cable magnetic decoupling device according to the performance test results.

[0102] Specifically, in the application scenario of this application, signal transmission performance and electromagnetic interference suppression effect are key indicators. In order to verify the effectiveness of the double-split cable magnetic decoupling device, detailed transmission tests and electromagnetic compatibility tests were carried out. The insertion loss and return loss in the frequency range of 1MHz to 100MHz were measured using a network analyzer. The results showed that the design of the double-split cable magnetic decoupling device significantly improved the signal transmission quality. Through radiation and conducted emission tests, the suppression effect of the magnetic ring on electromagnetic interference was verified, which meets international electromagnetic compatibility standards.

[0103] Furthermore, in actual testing, a spectrum analyzer can be used to test the radiation interference and conducted interference of the double-split cable magnetic decoupling device before and after installation to ensure that the double-split cable magnetic decoupling device can effectively reduce the crosstalk and radiation noise between cables. In addition, the double-split cable magnetic decoupling device can also be tested for long-term stability by placing the double-split cable magnetic decoupling device in extreme environments (such as 85°C high temperature, -40°C low temperature, and 85% hot and humid environment) to verify its performance reliability in harsh environments.

[0104] In step S25: the operator can also fine-tune the double-split cable magnetic decoupling device according to the results of the performance test to further optimize the distribution of the electromagnetic field. The fine-tuning includes changing the inclination angle of the magnetic ring or adding a small magnetic material block to the magnetic ring to enhance the electromagnetic characteristics. During the actual assembly, the operator can choose whether to perform fine-tuning according to the results of the performance test. This step is not a necessary step.

[0105] Specifically, the adjustment of the tilt angle of the double-split cable magnetic decoupling device can be a dynamic adjustment mechanism, which adjusts the tilt angle between the magnetic ring and the horizontal plane according to the frequency characteristics of the actual transmission signal. This mechanism can monitor the quality of the transmission signal through an automated system and adjust the depth or distance of the cable in the magnetic ring in real time to obtain the best signal transmission effect.

[0106] The above-mentioned double-split cable magnetic decoupling device and magnetic ring system have the following technical effects according to different application requirements:

[0107] Smart cable technology: In the future, we can consider introducing an intelligent monitoring and adjustment system to monitor the cable status in real time through sensors and automatically adjust the current distribution according to the load conditions.

[0108] Material innovation: Research and develop new high conductivity and high heat resistance materials to improve the overall performance of the cable while reducing the impact of imbalance.

[0109] Integrated Solutions: Explore integrated designs that combine cables, shielding, and conditioning to simplify wiring and improve overall system reliability and efficiency.

[0110] Medical equipment: In medical equipment, there are extremely high requirements for signal interference and distortion. Reducing imbalance can ensure the normal operation of the equipment and patient safety.

[0111] Aerospace: In the aerospace field, due to the harsh environmental conditions and high safety requirements, it is crucial to develop cable systems with low imbalance.

[0112] Power distribution: In the power distribution system, reducing the imbalance helps to improve the reliability of the overall power system and reduce the occurrence of power outages.

[0113] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0114] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A double-split cable magnetic decoupling device, characterized in that: The double-split cable magnetic decoupling device comprises a magnet, wherein the magnet has at least one annular through hole, wherein the annular through hole is used for the double-split cable to pass through, and a gap is formed between the inner wall of the annular through hole and the outer edge of the double-split cable; The magnet is made of a material with high magnetic permeability, so that the interfering magnetic field generated by the double-split cable can be absorbed by the magnet.

2. The double-split cable magnetic decoupling device according to claim 1, characterized in that: The magnet is circular in shape; or, the magnet is an equilateral polygonal structure; the annular through hole is located at the axial center of the magnet.

3. The double-split cable magnetic decoupling device according to claim 1, characterized in that: The ratio of the inner diameter of the annular through hole to the diameter of the double-split cable is 2-5.

4. The double-split cable magnetic decoupling device according to any one of claims 1 to 3, characterized in that: The double-split cable magnetic decoupling device also includes a magnet skeleton and a plurality of skeleton support parts arranged in the magnet, wherein the magnet skeleton is arranged in the magnet along the axial direction of the magnet and is coaxially arranged with the magnet, and the outer wall of the magnet skeleton is spaced from the inner wall of the magnet; All of the skeleton support parts are connected to the inner wall of the magnet skeleton and are arranged at intervals along the circumference of the magnet skeleton. The skeleton support parts extend along the radial direction of the magnet skeleton to support the magnet. The magnet skeleton is made of insulating material.

5. The double-split cable magnetic decoupling device according to claim 4, characterized in that: The double-split cable magnetic decoupling device also includes a plurality of airway supports, an installation gap is formed between the magnet skeleton and the magnet, the airway supports are arranged in the installation gap and are evenly distributed along the circumference of the magnet skeleton; wherein the airway supports are made of insulating material.

6. The double-split cable magnetic decoupling device according to any one of claims 1 to 3, characterized in that: The double-split cable magnetic decoupling device further comprises at least one cooling fan, and an air outlet of the cooling fan is arranged toward the annular through hole.

7. A cable system, characterized in that: It comprises a double-split cable magnetic decoupling device as described in any one of claims 1 to 6 and a double-split cable, wherein the double-split cable is passed through the annular through hole, and a spacing area is formed between each cable of the double-split cable, and in the radial direction of the magnet, the size of the spacing area is less than or equal to 10% of the inner diameter of the magnet.

8. A manufacturing method for manufacturing a double-split cable magnetic decoupling device as claimed in any one of claims 1 to 7, characterized in that: The manufacturing method comprises: Select and heat a high magnetic permeability material to a preset temperature; shaping the heated material into a magnet having an annular through hole; Cooling and hardening the formed magnet; The magnets are inspected for size and performance.

9. An assembly method for assembling the double-split cable magnetic decoupling device according to any one of claims 1 to 7 to a double-split cable, characterized in that: The assembly method comprises: Passing the double-split cable through the annular through hole of the double-split cable magnetic decoupling device; Adjust the position of the double-split cable magnetic decoupling device in the axial direction of the double-split cable; fixing the double-split cable magnetic decoupling device to the double-split cable; Perform performance tests on dual-split cables.

10. The assembly method according to claim 9, characterized in that: The assembly method further comprises: Based on the performance test results, magnetic components are added to the double-split cable magnetic decoupling device.

Images