13results about How to "Solve electromagnetic compatibility" patented technology

The utility model discloses a novel new energy automobile charging wire, including conductor layer, heat dissipation layer and insulating layer, the conductor layer is by the flattening of the flattening structure of the stranding of multiple annealed soft copper filaments, the heat dissipation layer is covered in the conductor layer outside, by silica gel BN composite material injection moulding, its inside is equipped with the micro -fine ventilation pipeline of through, the insulating layer is located the heat dissipation layer outside, the insulating layer includes inner shielding layer and outer protective layer. The utility model discloses scientific and reasonable structure design, through the flattening structure of conductor layer, compared with traditional circular structure increases the heat dissipation area, solves the problem that the inside of car is narrow because of the section of traditional charging wire and leads to the wiring difficulty of narrow space, the problem of heavy weight, through the inner shielding layer of insulating layer adopts aluminium foil mella composite layer, inhibits the electromagnetic interference of charging wire work, solves the electromagnetic compatibility problem of high -power charging wire.

This invention discloses a bending fatigue enhancement structure for flat cables, relating to the field of flat cable technology. It includes a wear-resistant outer sheath, a flexible skeleton, an elastic inner liner, and a composite conductor bundle. The wear-resistant outer sheath covers the flexible skeleton, with bending stress cores at the outer ends. The flexible skeleton is internally covered by an elastic inner liner, which contains two spaced-apart composite conductor bundles. The flexible skeleton has grooves filled with an anti-oxidation coating layer, within which the bending stress cores are fixed. The interior features stress-dispersing adhesive grooves intersecting with the grooves, and high-toughness reinforcing ribs with abrasion-resistant protective sleeves are installed at the four corners. The elastic inner liner has a water-blocking tape wrapping layer on its outer side and a flame-retardant isolation layer inside. The composite conductor bundles are wrapped with cable core fixing rings and an electromagnetic shielding layer. This structure, through multiple stress dispersion, protection, and positioning designs, significantly improves the cable's bending fatigue resistance, ensuring stable transmission and safe operation, and is suitable for high-frequency bending scenarios.

The utility model discloses a high-voltage circuit breaker synthesis test ignition device and a synthesis test device, and belongs to the technical field of high-voltage circuit breaker tests. Comprising a photoelectric isolation unit, an MOS tube, a transformer, a first ignition ball, a first capacitor and a voltage source. The input end of the optoelectronic isolation unit is used for receiving optical pulse signals, the first end of the optoelectronic isolation unit is electrically connected with the grid electrode of the MOS tube, the drain electrode of the MOS tube is electrically connected with the first end of the voltage source, the second end of the voltage source is electrically connected with the first end of the transformer, and the second end of the transformer is electrically connected with the second end of the optoelectronic isolation unit. The third end and the fourth end of the transformer are electrically connected with the first ignition ball, and the first ignition ball is electrically connected with the first capacitor. Operation safety and stability of equipment can be improved, and the problem that an existing ignition device is insufficient in operation safety and stability is solved.

The invention belongs to the field of electromagnetic field calculation, and particularly relates to a rapid solving algorithm for electromagnetic field distribution under a variable dielectric constant. According to the method, a physical field under an initial boundary condition is solved, a full-wave simulation method is utilized, in subsequent iterative calculation, when the dielectric constant of a substance changes, electromagnetic field distribution is continuously adjusted by utilizing a correction calculation formula, and corresponding electromagnetic field distribution is obtained. The algorithm is especially suitable for the condition that the dielectric constant of a substance is gradually changed under the influence of external environmental factors. According to the method, the problem that in a traditional method, a repeated full-wave simulation calculation method is adopted for continuously changing environments such as physical attributes and physical fields of substances, and consequently the calculation amount is huge is solved. The electromagnetic field radiation condition and the electromagnetic wave leakage condition of the system can be observed by quickly acquiring the real-time electromagnetic field distribution around the object, and the problem of systematic electromagnetic compatibility is solved.

This application provides an electromagnetic protection structure and an electronic device. The electromagnetic protection structure includes: a first structural component comprising a radio frequency (RF) source; a second structural component coupled to the first structural component with a first current path, the first current path including a nonlinear region, wherein a nonlinear effect occurs in the nonlinear region when the coupled current of the RF source passes through it; and a conductive medium electrically connected to the first and second structural components to form a second current path between the second and first structural components, allowing at least a portion of the coupled current of the RF source to flow from the first structural component, through the second current path, to the second structural component. In this application embodiment, the second current path formed by the conductive medium can shunt the first current path, eliminating or weakening the nonlinear effect on the first current path, thereby solving the electromagnetic compatibility problem of the electronic device caused by nonlinear effects.

The present invention discloses a highly integrated multi-channel tile-type T / R component and an arrangement method. The highly integrated multi-channel tile-type T / R component is square, and is surrounded by a base plate, a cover plate, a front plate, a rear plate, a left plate and a right plate as walls to form an installation cavity. The characteristics are as follows: n groups of first connectors are installed on the base plate, each group of first connectors is composed of two connectors, one for receiving and one for transmitting, and each group of first connectors is perpendicular to the base plate. A group of second connectors is installed on the cover plate, and the second connector is a combined port for receiving output and transmitting input. A through groove is provided on the cover plate, and three layers are provided in the installation cavity. The present invention integrates multiple radio frequency channels to achieve miniaturization, can effectively reduce the cross-sectional height of the active phased array antenna, and the heating device inside the T / R component is close to the heat sink to achieve the purpose of rapid heat conduction.

The invention discloses a hydrogen fuel cell hybrid power system based on an isolation DC / DC. The hydrogen fuel cell hybrid power system is characterized by comprising a fuel cell system, a power cell I, an intermediate DC link I, a charging socket, the isolation DC / DC, a power cell II, an intermediate DC link II and an electric transmission system. According to the system, energy conversion and electrical isolation of a fuel cell system and a locomotive electric transmission system are realized by adopting an isolated DC / DC (Direct Current / Direct Current). The problem that rated impulse voltage generated by a main transmission system influences a fuel cell system is solved, and the fuel cell system can meet the voltage requirement of a dielectric strength test of a locomotive electric transmission system. The power battery and the fuel battery system are output in parallel, when the fuel battery system changes the load, the fuel battery can directly obtain energy from the power battery through the non-isolated DC / DC, the power battery is not limited by the isolated DC / DC loading current under the starting and load rising and falling working conditions, and the load increasing and decreasing speed of the fuel battery system is increased.

The present application relates to a comprehensive electromagnetic protection switching power supply, including an electromagnetic pulse protection module, an EMI filter module, an AC / DC conversion module and at least one DC / DC power supply module; the electromagnetic pulse protection module is connected to the EMI filter module and is also used to access the first alternating current; the EMI filter module is connected to the AC / DC conversion module; the AC / DC conversion module is connected to at least one DC / DC power supply module; the electromagnetic pulse protection module is used to discharge the energy generated by the electromagnetic pulse of the first alternating current, filter out high-frequency clutter signals, obtain the second alternating current and output it to the EMI filter module; the EMI filter module is used to filter the second alternating current, obtain the third alternating current and output it to the AC / DC conversion module; the AC / DC conversion module is used to convert the third alternating current into the first direct current and output it to the DC / DC power supply module, and the DC / DC power supply module is used to convert the first direct current into the second direct current and provide it to the load. In this way, the electromagnetic compatibility problem is solved and the normal operation of the comprehensive electromagnetic protection switching power supply and the back-end load is guaranteed.

The invention discloses a device for improving cavity isolation and application, and the device comprises a housing and a cover plate disposed at the top of the housing, the interior of the housing is provided with a separation rib used for isolating a cavity in the housing, the device also comprises an elastic reed which is disposed at the bottom of the cover plate and clamps the separation rib, and the inner side of the housing is provided with a substrate below the separation rib. And the interior of the shell is divided into two independent cavities by the separation rib and the elastic reed. The elastic reed is designed between the separating rib and the cover plate, good contact between the separating rib and the cover plate is guaranteed through elastic deformation of the elastic reed, a large free space is provided for the allowable range of a gap between the separating rib and the cover plate, and the problem that a shielding loop is not closed due to the fact that the gap exists between the separating rib and the cover plate is solved; therefore, the isolation degree between the cavities is effectively improved. The elastic reeds have high diastolic resistance, elastic deformation can be recovered when the elastic reeds are pulled out of the separating ribs, and the problem of repeated plugging and pulling is solved.

The utility model provides a kind of double-frequency wave trap ultra-wideband antenna based on double C-shaped structure, including dielectric substrate, C-shaped radiating patch unit, microstrip transmission line and two coplanar waveguide ground planes.C-shaped radiating patch unit is printed in the upper surface middle part of dielectric substrate, including first C-shaped radiating patch and second C-shaped radiating patch;Microstrip transmission line is printed on the upper surface of dielectric substrate, and microstrip transmission line is guided to C-shaped radiating patch unit from the edge of dielectric substrate and is connected therewith;Two coplanar waveguide ground planes are printed on the upper surface of dielectric substrate, and are symmetrically arranged on the both sides of microstrip transmission line and are provided with first gap between microstrip transmission line.

This invention belongs to the field of electromagnetic field calculation, and specifically relates to a rapid solution method for electromagnetic field distribution under varying dielectric constants. The method solves for the physical field under initial boundary conditions using full-wave simulation. In subsequent iterative calculations, whenever the dielectric constant of the material changes, a modified calculation formula is used to continuously adjust the electromagnetic field distribution to obtain the corresponding distribution. This algorithm is particularly suitable for situations where the dielectric constant of a material gradually changes under the influence of external environmental factors. This invention solves the problem of the enormous computational burden caused by repetitive full-wave simulation calculations in traditional methods for constantly changing material physical properties and physical fields. By rapidly obtaining the real-time electromagnetic field distribution around the object, the electromagnetic field radiation and electromagnetic wave leakage of the system can be observed, thus resolving systemic electromagnetic compatibility issues.

The utility model relates to the technical field of automobile manufacturing, specifically relates to a new energy automobile high -voltage cable electromagnetic shielding joint, including joint main part, force nut and shielding ring connection structure, shielding ring connection structure is coaxially built -in in joint main part in detachable mode, and is same time with high -voltage cable's metal shielding layer, joint main part and force nut form electrically conductive communication, force nut and joint main part between realize axial locking through screw pair, shielding ring connection structure includes cap pressure -welding ring, boss washer and annular metal wire net shielding gasket, cap pressure -welding ring is installed on high -voltage cable's metal shielding layer outer surface and is pressure -welding fixed, boss washer is coaxially attached to the axial end surface of cap pressure -welding ring, metal wire net shielding gasket is set up in annular step at the outer periphery of boss washer, and under the axial pressure effect of force nut, is elastically compressed between cap pressure -welding ring and boss washer, can complete mechanical fixation, waterproof sealing and double electromagnetic shielding simultaneously.