144results about "Localised screening" patented technology

Provided are a heat dissipation apparatus and an electronic device. The heat dissipation apparatus includes a heat dissipation module including at least two first liquid cooling plates arranged side by side and connected in series. Each first liquid cooling plate includes a liquid cooling channel with a liquid inlet and a liquid outlet. The liquid inlet of the first liquid cooling plate at one end is connected to a first liquid inlet pipe, and the liquid outlet or liquid inlet of the first liquid cooling plate at the other end is connected to a first liquid return pipe. For all the other liquid outlets and liquid inlets, two adjacent liquid outlets are connected through a connecting pipe, and two adjacent liquid inlets are connected through another connecting pipe.

The invention discloses an integrated power supply device capable of being flexibly disassembled, and belongs to the technical field of electric power systems, the integrated power supply device comprises a shell, a power supply body is mounted in the shell, a sealing mechanism is arranged in the shell, the sealing mechanism comprises a plurality of telescopic parts fixedly mounted in the shell, and sliding plates are fixedly mounted at the top ends of the telescopic parts; a cover plate is slidably mounted at the top end of the sliding plate, a cavity used for exhausting air from the telescopic part is formed in the shell, a screw rod is rotatably mounted in the cavity, and a moving plate is mounted on the surface of the screw rod in a threaded mode. And meanwhile, the sealing air bag expands to pressurize a gap between the cover plate and the shell, so that the gap is effectively filled, the sealing effect in the power supply is greatly enhanced, external dust, moisture and the like can be effectively prevented from entering the power supply, and a power supply body is protected from being corroded.

Compact electronic devices, such as Access Points (APs), having airflow and cooling features are provided. According to one implementation, a compact electronic device including a housing having an interior and a plurality of vents for air ingress and egress. The plurality of electrical components located in the interior of the electronic device and a heat spreader located in the interior, disposed above the plurality of components and connected to the plurality of vents for the air ingress and egress. The heat spreader being configured to provide grounding and shielding for the plurality of electrical components and wherein the heat spreader includes chamber formed therein for supporting a fan module. The compact electronic device further comprises of a plurality of antennas for a plurality of frequencies, where the antennas are any of disposed within and formed as part of the house of the heat spreader.

The invention discloses a hardness self-adaptive adjustment high-voltage insulation shielding cover which comprises a composite insulation cover body, the composite insulation cover body sequentially comprises an outer insulation layer, a middle magnetorheological elastomer interlayer and an inner attaching layer from outside to inside, and a miniature electric field sensor is embedded in the surface of the outer insulation layer and used for monitoring the intensity of a surrounding electric field in real time; the flexible electromagnetic coil is embedded in the middle magnetorheological elastomer interlayer; the intelligent induction energy storage module is integrated in a lightweight waterproof box at the top of the composite insulation cover body and comprises a magnetic field controller, a micro super capacitor, an electric field signal processor and a pressure signal converter, and the magnetic field controller is connected with the flexible electromagnetic coil through a wire; through the three-layer structure design of the composite insulation cover body and corresponding material selection, double guarantee of insulation protection and self-adaptive fitting is realized.

The invention discloses an integrated filter preparation method and a filter, and belongs to the technical field of filter preparation. The preparation method comprises the following steps: S1, preparing a copper bar with an annular groove; s2, after the copper bar is subjected to surface strengthening treatment, a preformed part with a sealing rib structure is formed through one-time injection molding; s3, sleeving the pretreated magnetic ring, and performing dual fixation through mechanical interlocking and an adhesive; s4, performing secondary injection molding and embedding the metal shielding net to realize integrated packaging; and S5, carrying out whole-process on-line detection and forming traceability data. The fixing stability is improved through the mechanical interlocking design of the copper bar annular groove and the magnetic ring, the material binding force is enhanced in combination with surface strengthening treatment, the electromagnetic shielding effectiveness is improved by embedding the metal shielding net through secondary injection molding, and the product consistency is guaranteed in cooperation with full-process detection and intelligent parameter regulation and control. The waterproof and dustproof grade of the prepared filter reaches IP67, the electromagnetic shielding effectiveness is larger than or equal to 60 dB, the requirements of high-end scenes such as new energy automobiles and aerospace can be met, and the filter has wide application prospects.

The invention discloses a controller assembly and a vehicle, and belongs to the technical field of motor control. The controller assembly has a first direction, a second direction and a third direction which are mutually perpendicular in pairs, the first direction is parallel to the width direction of the vehicle, the second direction is parallel to the height direction of the vehicle, and the third direction is parallel to the length direction of the vehicle; the controller assembly comprises a first integrated module and a second integrated module, and the first integrated module and the second integrated module are arranged in a stacked mode in the second direction. The first integrated module comprises a first box body, a power supply module and a high-voltage power distribution unit; the second integrated module comprises a second box body, a filtering assembly, a supporting capacitor, an integrated plate assembly and an output terminal. According to the controller assembly, the number of parts can be reduced, the manufacturing cost can be reduced, the size in the third direction can be reduced, and therefore the forecabin collision energy absorption space is increased.

A foldable electronic device according to an embodiment may include a display panel configured to be folded along a folding axis parallel to a first direction, a plurality of adhesive layers below the display panel, and positioned in an area excluding at least a portion of the folding area that forms a curved surface in a folded state of the display panel, and a magnetic shielding layer attached under the display panel through the plurality of adhesive layers.

A multifunctional intelligent calendar is provided, which includes an intelligent electronic calendar body and a magnetic attraction mechanism. A detachable shell covers the back of the intelligent electronic calendar body; the magnetic attraction mechanism includes magnetic attraction components located on an inner side and an outer side of the shell. In this way, the calendar is magnetically fixed, so that the calendar can be easily adsorbed on a surface such as a wall and a metal object, and can be stably fixed on an inclined surface, at a side-hanging position, or at a ceiling-mounted suspending position, which greatly expands use scenes of the intelligent calendar and effectively ensures practical functionality of the intelligent calendar.

The invention relates to a vehicle headlamp module comprising a circuit arrangement for controlling at least one function of a vehicle headlamp and a housing for accommodating the circuit arrangement, wherein the housing has a metallic, electrically conductive shielding surface towards the circuit arrangement for electromagnetic shielding of the circuit arrangement, wherein the circuit arrangement has a touch-sensitive surface section, wherein the touch-sensitive surface section has no electrical components arranged thereon and a flat section towards the shielding surface of the housing, wherein an electrical strip conductor and / or a contact extends along the touch-sensitive surface section, wherein a plurality of solidified, electrically non-conductive adhesive points are arranged on the touch-sensitive surface section, which adhesive points project in the direction of the flat section of the shielding surface of the housing from the touch-sensitive surface section for ensuring a minimum distance between the touch-sensitive surface section and the flat section of the shielding surface of the housing.

The present invention relates to a system comprising an electronic printed circuit board and a support frame for receiving the printed circuit board.

The invention provides a power module, an electric drive assembly and a vehicle, and the power module comprises a plurality of sub-power modules, and each sub-power module corresponds to one phase; the number of the lining plates is multiple, each lining plate is provided with a reference surface, at least one sub-power module in the multiple sub-power modules is provided with one lining plate, and the sub-power modules are located in the reference surfaces; a plurality of direct current power terminals, the plurality of direct current power terminals and the plurality of lining plates are arranged in a one-to-one correspondence manner, the direct current power terminals are located in the reference surface, and the direct current power terminals are arranged at one ends of the lining plates; the number of the alternating current power terminals is multiple, and the multiple alternating current power terminals and the multiple lining plates are arranged in a one-to-one correspondence mode; and the plurality of capacitors are arranged in one-to-one correspondence with the plurality of lining plates, and the capacitors are located between the sub-power modules and the direct-current power terminals. According to the invention, the problem of how to effectively suppress the voltage spike in the switching process by the power module in the prior art is solved.

The invention discloses a metal shell magnetic shielding structure of an electromagnetic coil heating source electrothermal furnace, which comprises a metal shell, a shell opening is arranged on the upper side surface of the shell, an electromagnetic coil corresponding to the shell opening is arranged in the metal shell, and a shielding plate is arranged on the upper side of the electromagnetic coil in the metal shell. The electromagnetic coil is used for generating an alternating magnetic field, so that the bottom of the iron pan generates induction eddy current heating under the alternating magnetic field, the energy transfer efficiency is improved, heat is quickly absorbed and uniformly dispersed, local overheating is reduced, and the service life of the electromagnetic coil is prolonged. Meanwhile, the shielding plate is arranged between the electromagnetic coil and the metal shell, an alternating magnetic field is shielded from acting on the metal shell, heating of the metal shell is avoided, the temperature of the metal shell is reduced by about 10 DEG C through experimental comparison, and the use safety is improved.

To improve the cooling performance while suppressing noise of an electronic apparatus including a high heat-generating electric component with a simple configuration.SOLUTION: In an electronic apparatus 100, a heat conduction component 170 includes: a shield part 160 covering an electric component 110 on a circuit board 120 and shielding noise; and a heat transfer elastic part 150 disposed on the upper surface of the shield part 160, the heat transfer elastic part transferring heat of the electric component 110 to a heat dissipation component 140. The shield part 160 is electrically connected to a ground connection part 130 on the circuit board 120 and is in contact with the electric component 110 with a predetermined pressure.SELECTED DRAWING: Figure 1

The application provides a power module and a solid-state transformer system, the power module comprising: a circuit module having a voltage level; and a cabin body for covering the circuit module by bending or splicing, and the cabin body having a shielding structure, the shielding structure comprising: a first conductor layer located on a side close to the circuit module and connected to the circuit module in an equipotential manner; a second conductor layer spaced apart from the first conductor layer and located on a side away from the circuit module; and a solid insulation layer arranged between the first conductor layer and the second conductor layer and used for electrically isolating the first conductor layer from the second conductor layer. The power module provided by the application has good insulation performance and is easy to assemble.

The invention discloses an aviation piston engine redundancy ignition system with an electromagnetic shielding function and an ignition method, and particularly relates to the field of engines. Comprising a first control module and a second control module, the two control modules are connected with two ignition coils through high-voltage damping wires respectively, and each ignition coil is connected with a spark plug mechanism through a high-voltage damping wire; the two spark plug mechanisms are arranged on an air cylinder of the engine; a shielding layer is coated outside the high-voltage damping wire; and the spark plug mechanisms are respectively and correspondingly sleeved with shielding shells. Based on the system, redundancy ignition control is adopted, two control modules are used, each control module can control two sets of independent ignition systems at the same time, release electric energy to two ignition coils at the same time, conduct ignition control, and can effectively restrain electromagnetic interference.

The present invention discloses an EMC wave-filter shielding structure including an EMC filter board; a lower shield cover that is installed on one side of the EMC filter board, and connected with the EMC filter board around to form a shielding cavity; a X capacitor, a Y capacitor, a first filter inductor and a second filter inductor that are all arranged in the shielding cavity and correspondingly connected with the EMC filter board, respectively; and an upper shield cover that is installed on the other side of the EMC filter board backing toward the shielding cavity, and directly opposite to the lower shield cover. The present invention increases the distance between an electromagnetic interference source and a control signal, and enhancing quality of control signals.

The invention discloses a converter valve tower shielding case, and belongs to the technical field of high-voltage direct-current power transmission equipment. The shielding case comprises a plurality of shielding plates, the shielding plates are divided into not less than five coating thickness areas according to the electric field intensity gradient of the coverage area, the coating thickness is in positive correlation with the electric field intensity, and the coating thickness change rate between the adjacent areas does not exceed 20%; the coating is prepared from the following components in parts by mass: 0.95 to 1.05 parts of nickel powder, 0.4 to 0.7 part of magnetic fiber, 0.9 to 1.1 parts of amorphous magnetic powder and 8.8 to 9.2 parts of acrylic resin. The electric field intensity of the top and other key parts of the valve tower can be effectively reduced, so that the electrical breakdown or flashover phenomenon caused by electric field concentration is avoided, the manufacturing cost is reduced while the electrical performance is improved, and the service life of equipment is prolonged.

The present disclosure provides a power module and a solid-state transformer system. The power module includes: a circuit module, having a voltage level; and a cabin, configured to wrap the circuit module by bending or splicing, where the cabin has a shielding structure, the shielding structure including: a first conductor layer, located at a side close to the circuit module and equipotentially connected to the circuit module; a second conductor layer, arranged apart from the first conductor layer and located at a side away from the circuit module; and a solid insulating layer, provided between the first conductor layer and the second conductor layer for electrically isolating the first conductor layer and the second conductor layer. The power module provided by the present disclosure has good insulation performance and is easy to assemble.

A method for providing an electrically conductive layer for a plastic housing, in particular a splice housing for an electromagnetically shielded cable harness, comprises the following steps: a) providing an electrically conductive film and a mold; b) inserting the film into a mould; c) injection molding a plastic into the mold such that the injected plastic is bonded to the conductive film.

The application discloses a three-dimensional integrated packaging structure based on a dielectric integrated suspended line, which comprises N layers of dielectric plates covered with metal on both sides; the N layers of dielectric plates are stacked from bottom to top; the dielectric plates of any one or any multiple adjacent layers from the 2nd layer to the N-1th layer are patterned and hollowed to form at least one air cavity; metalized through holes are formed on the 1st layer to the Nth layer to form an electric wall around the air cavity; the 1st layer and the Nth layer together with the formed electric wall constitute an electromagnetic shielding cavity; the 2nd layer to the N-1th layer are electrically connected through a three-dimensional vertical interconnection technology; and one or more functional devices are arranged in each air cavity. The application can realize the collaborative design of functional devices, system circuits and packaging, reduce the influence of packaging on the performance of circuits, reduce the mutual interference between functional devices, facilitate individual debugging, reduce transmission loss, be favorable for realizing high-speed data transmission and improve system reliability.

An audio device, such as a microphone, may include a shield adapted to shield one or more components of the audio device from electromagnetic interference (EMI). The shield may be a metallic mesh structure that allows for audio to be processed through the shield while blocking electromagnetic radiation, such as radio-frequency (RF) electromagnetic radiation from RF transmissions from one or more wireless devices. The microphone may be adapted to engage and secure the shield with one or more components of the audio device (e.g., the housing). This advantageously improves the audio quality and performance by blocking or suppressing the electromagnetic radiation and resulting EMI.

The invention relates to a magnetic field shielding structure and a transient electromagnetic detection device, and relates to the technical field of transient electromagnetic detection, the magnetic field shielding structure comprises a shielding member, the shielding member comprises a plurality of shielding structures, the plurality of shielding structures are arranged along the circumferential direction of the shielding member, each shielding structure comprises a shielding part and an isolation part, and in two adjacent shielding structures, the isolation part is arranged along the circumferential direction of the shielding member. The shielding part and the isolation part are arranged in a staggered manner, the isolation part is made of an insulating material, the magnetic field intensity radiated by the transmitting coil in non-detection directions such as the upward direction and the lateral direction can be effectively weakened through the arrangement of the shielding part, invalid interference signals can be reduced, and meanwhile, the shielding part and the insulating isolation part are arranged in a staggered manner, so that the shielding effect is improved. Therefore, generation of eddy current in the shielding part can be inhibited, superposition of an additional secondary magnetic field formed by the eddy current and an effective secondary magnetic field signal generated by the underground target body can be avoided, the accuracy of detection data can be greatly improved, and the problem of detection distortion caused by eddy current interference of an existing shielding structure is solved.

The invention relates to the technical field of PLC design, and discloses a programmable logic controller and a modular structure, and the programmable logic controller comprises a CPU host module and at least one extension module. Through the combination of the CPU host module and the detachable expansion module, a complex rack is omitted, and the overall layout is simplified. The module shell is made of aluminum alloy, has good electromagnetic shielding performance, does not need additional shielding parts, and further reduces the structural complexity. The module is directly fixed in the electric control cabinet through screws, and a special support is not needed. The extension module adopts a front, middle and rear shell split design, and the circuit board is integrated in the middle shell, so that the assembly and maintenance are convenient; the inter-module connectors are intensively arranged at the end part, so that the connection disorder is avoided. The front shell is covered with a film, the rear shell is provided with a cushion, and protection and damping are both considered. Through the modes of modular combination, an aluminum alloy shell, integrated installation, simplified connection and fixation and the like, simplified design of the PLC structure is realized while the PLC is adapted to a severe electromagnetic environment.

A composite comprising a polymeric matrix and EM absorbers dispersed within the polymeric matrix. Each EM absorber comprises a ceramic particle having a surface, and a magnetic coating on at least a portion of the surface of the ceramic particle. The EM absorbers function as dielectric and magnetic absorbers in the 1-100 GHz frequency range. The composite can be used as an electromagnetic shielding article to mitigate electromagnetic interference in, for example, high speed, high frequency (HSHF) consumer electronics.

The embodiment of the invention provides a liquid cooling radiator and electronic equipment, and relates to the field of liquid cooling heat dissipation. The liquid cooling radiator comprises a liquid cooling piece. The liquid cooling piece comprises a flow channel wall used for forming a flow channel in an enclosing mode, and the flow channel is used for allowing a liquid cooling medium to flow. The flow channel wall comprises an insulating wall and a plurality of conductive parts arranged at intervals, the conductive parts of the flow channel wall are connected through the insulating wall, and the plurality of conductive parts form a frequency selective surface structure. Thus, the frequency selective surface structure can play a role in filtering interference electromagnetic waves, interference on a communication device arranged on the side of the liquid cooling radiator can be reduced, and the communication experience of the electronic equipment can be improved.

The application provides a full fluorescence yield detector for in-situ soft X-ray absorption spectroscopy, which is based on a photomultiplier and can collect weak fluorescence signals excited by soft X-rays under in-situ conditions (reactions under simulated complex environment conditions). A large-diameter photomultiplier is used and the top angle of the detector is improved to increase the fluorescence collection angle as much as possible to improve the signal strength; double gold meshes are used and different voltages are added to shield interference signals such as photoelectrons and positive ions of non-fluorescence yield at the same time; a spliced half-cylinder barrel design is used to realize shielding and facilitate maintenance and replacement of the photomultiplier; a spring and rubber pad are used in cooperation with a screw to fasten the mode, which can maintain good electrode contact while avoiding overpressure damage to the photomultiplier and can work stably in a vibrating environment. The application optimizes the detector from the aspects of the structure of the detector, detection efficiency, signal interference shielding, maintenance convenience and the like.

Provided in the present application are a self-shielding module and a communication apparatus. The communication apparatus comprises: a TRX board, at least one heat-dissipation structural member, and at least one self-shielding module, wherein a surface of each of the at least one self-shielding module comprises a metal shielding layer, the at least one self-shielding module is electrically connected to the TRX board, and the at least one heat dissipation structural member and the at least one self-shielding module are disposed on the same surface and / or different surfaces of the TRX board. The self-shielding module provided in the embodiments of the present application does not require a large-weight metal shielding cover, and does not require a large-sized enclosure frame; and a metal shielding layer can implement the signal shielding of power amplifier circuits, thereby making shielding modules of the power amplifier circuits miniaturized and lightweight, and increasing the effective layout areas of the power amplifier circuits.

The invention provides a preparation method of a thermocuring bonding conductive shielding film, the shielding film and application. The preparation method of the shielding film comprises the following steps: diluting vinyl silicone oil into an organic silicon solution by using an organic solvent, adding hydrogen-containing silicone oil, 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane, an adhesion promoter, a platinum catalyst and a graphite material, and stirring to obtain a mixed sizing material; coating one side of a copper foil with the mixed sizing material, baking at the temperature of 40-65 DEG C to obtain a first semi-solid sheet, covering the first semi-solid sheet with a first release film, coating the other side of the copper foil with the mixed sizing material, baking at the temperature of 40-65 DEG C to obtain a second semi-solid sheet, covering the second semi-solid sheet with a second release film, and refrigerating. The prepared thermocuring bonding conductive shielding film has good bonding force and shielding performance, is soft, can be well attached to the surface of a metal target piece, is tight in sealing, is thin in application thickness, and can save space.

A cover plate for an electronic device may include: a first layer including a first surface facing a first direction, a second surface facing a second direction opposite to the first direction, and a specified type of fiber disposed between the first and second surfaces; and a second layer having a specified RF shielding effectiveness and disposed in the second direction with respect to the first layer. Various other embodiments are also possible.

The present invention relates to the field of electronic materials, specifically to an aircraft de-icing / electromagnetic low-scattering compatible structure and a design method thereof. The present invention adopts a periodic high-wave-transmittance electric heating impedance network, conforms the impedance network to the wave-absorbing structure, and realizes high-wave-transmittance performance through patterned design of the impedance network; and by optimizing the key ice formation areas on the surface of the wave-absorbing structure to perform resistance control in partitioned areas, the purpose of zoned heating and concentrated heat adjustment is achieved, thereby achieving more targeted de-icing. The present invention can simultaneously realize the functions of electric heating de-icing and electromagnetic low-scattering, which can not only meet the needs of aircraft de-icing at high altitude or in cold environments, thereby protecting the flight safety of the aircraft, but also ensure that the aircraft's electromagnetic low-scattering function is not affected. It is expected to be applied to the safety protection and electromagnetic compatibility of future low-detectable aircraft, and become its important technical accumulation.