76results about "Screening metallic containers" patented technology

A battery pack with electromagnetic compatibility (EMC) for an electric vehicle is presented that includes a battery pack housing, at least one battery module enclosed within the battery pack housing, and an electronics assembly enclosed within the battery pack housing, in which the electronics assembly comprises a DC-DC converter and an electronics assembly casing, wherein at least one of the electronics assembly and battery pack housing includes an electromagnetic interference (EMI) shield to enable EMC. The electronics assembly includes a battery management system (BMS) circuit board and a DC-DC converter control circuit board and a DC-DC converter power electronics board. The electronics assembly is of substantially a same dimension of a battery module, in which the EMI shield comprises at least one of a metallic screen, metallic wires, a metallic tape, a metallic sheet, a metallic coating, paramagnetic materials, carbon based materials and metallic and / or carbon particle-infused composites.

The invention belongs to the technical field of electromagnetic radiation leakage, and particularly relates to a low-leakage handheld terminal. According to the method, efficient electromagnetic shielding is achieved in a Faraday cage structure mode through lap joint of all parts, the surface of a resistance screen is covered with an irregular metal net, and the space between the irregular metal net and a front cover is filled with an aluminum silver-plated conductive rubber plate used for cushioning and extrusion to achieve electric continuity between the irregular metal net and the front cover. The front cover, the middle frame and the rear cover are electrically continuous through opposite-penetrating screws, and copper foils are filled among contact surfaces of the middle frame, the rear cover and the front cover to enhance conductivity, so that the whole handheld terminal structure is in an electrically continuous state. The broadband electromagnetic shielding material has the beneficial effects that the electromagnetic shielding performance is remarkably improved, broadband effective protection is realized, the problem that the frequency band of a traditional electromagnetic shielding material is narrow is effectively solved, the shielding effectiveness of 40-50dB is realized in the broadband range of 30MHz to 1GHz, and the information safety level of equipment in an electromagnetic sensitive environment is remarkably improved.

A ruggedizing apparatus for electronic equipment in a spacecraft is provided that can achieve both a radiation shielding effect and a heat-dissipation effect. The ruggedizing apparatus includes: a pressure vessel that is filled with a coolant and places at least a heat-generating electronic circuit of the electronic equipment within the pressure vessel, wherein the heat-generating electronic circuit is immersed in the coolant; and a forced liquid-flow generator placed within the pressure vessel, wherein the forced liquid-flow generator causes the coolant on the heat-generating electronic circuit to move away from the heat-generating electronic circuit.

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.

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 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.

The invention relates to an unmanned aerial vehicle, comprising an autonomous power supply source (44), a central housing (14), in the internal volume of which is arranged electronic equipment electrically powered by the power source and at least one wing, which is motorized and laterally offset with respect to the central housing (14) by means of a rigid arm (20), for maintaining the electronic equipment in flight by propulsion or levitation on remote control. The central housing (14) comprises an electrically conductive wall (42) extending so as to protect the electronic equipment from any electromagnetic field external to the central housing (14). Each laterally offset rigid arm (20) of the motorized wing is hollow and the electrically conductive outer wall is electrically connected to the conductive wall (42) of the central housing (14). Each wing motor is electrically powered by electrical wires (84) which extend within the corresponding laterally offset rigid arm (20) while being electrically insulated from its conductive outer wall.

An electronic device includes: a circuit board on which an electronic component is mounted; and the shell is made of metal, and a circuit board is arranged in the shell. The housing has: an inner wall on which the circuit board is mounted and which surrounds the electronic component; and at least one protrusion disposed on a surface of the inner wall facing the circuit board and in metal-to-metal contact with the circuit board.

A modular field device which, in spite of a plastic housing, fulfills EMC requirements and is easy to manufacture includes a sensor module for determining a process variable. For the purpose of EMC-protection, a conductive enclosure is secured in an inner space of the housing and surrounds a first inner region. A first end region of the enclosure is oriented toward a passageway of the housing. An opposite, second end region of the enclosure is closed by a circuit board such that the inner region is electromagnetically shielded. Accordingly, also the evaluation module connected with the sensor module and serving for communication is EMC protected since it is arranged in the protected inner region on a surface of the circuit board facing the inner region.

A structure formed by placing a metal sheets one on another in a sheet-thickness direction, the metal sheets each having an electrically conductive base material covered with an insulating coating, the structure including: a protrusion provided on a first metal sheet of the metal sheets that are adjacent to each other and are fastened together with a screw, the protrusion protruding toward a second metal sheet; an elastically deformable portion provided on the metal sheet in such a manner that the elastically deformable portion surrounds the protrusion, the elastically deformable portion being elastically deformable at the time of the fastening with the screw; a protrusion disposed on the metal sheet in such a manner that the protrusion protrudes toward the metal sheet, and crosses the protrusion; and an elastically deformable portion provided on the metal sheet in such a manner that the elastically deformable portion surrounds the protrusion.

The present disclosure relates to a housing assembly for accommodating printed circuit boards (PCBs). The housing assembly comprises a first housing portion configured to accommodate a first PCB, a second housing portion configured to accommodate a second PCB, and a separating portion for separating the first housing portion from the second housing portion. The separating portion comprises a first separating region in which the first housing portion and the second housing portion overlap and a second separating region that extends beyond the second housing portion and covers the first housing portion. The second separating region comprises one or more convection openings.

A raised floor tile enclosure system that includes a pedestal, a bracket connected to the pedestal, and an equipment tray assembly supported by the bracket. The equipment tray assembly includes a bottom wall, at least one side wall that extends from the bottom wall and at least partially forms an interior volume, and a support plate movably positioned within the interior volume. The raised floor tile enclosure system further includes electronic equipment supported by the support plate and a floor tile coupled to the equipment tray that can enclose the interior volume. The support plate can move toward the bottom wall when the floor tile us coupled to the equipment tray. The electronic equipment can be received entirely within the interior volume when enclosed by the floor tile.

The invention relates to a power electronics unit for a vehicle. The power electronics unit comprises: a housing; a partition that divides the housing into an interference reduction region and an interference source region and is configured to electromagnetically decouple the interference reduction region from the interference source region; a high voltage power electronics within the interference source region; a circuit board which is at least partially arranged in the interference reduction region, a low-voltage connection for a low-voltage signal is arranged on the circuit board in the interference reduction region, the low-voltage signal entering and exiting an upper-level vehicle system of the vehicle, and wherein the low-voltage connection is connected to the circuit board in the interference reduction region. A battery connection of the power electronics unit is arranged on the circuit board in the interference reduction region. The invention also relates to a vehicle having a battery, an electric motor and a power electronics unit.

A structure formed by placing a plurality of metal sheets (10, 20) one on another in a sheet-thickness direction, the plurality of metal sheets (10, 20) each having an electrically conductive base material covered with an insulating coating, the structure including: a protrusion (11) provided on a first metal sheet (10) of the plurality of metal sheets (10, 20) that are adjacent to each other and are fastened together with a screw (51), the protrusion protruding toward a second metal sheet (20); an elastically deformable portion (12) provided on the metal sheet (10) in such a manner that the elastically deformable portion (12) surrounds the protrusion (11), the elastically deformable portion (12) being elastically deformable at the time of the fastening with the screw (51); a protrusion (21) disposed on the metal sheet (20) in such a manner that the protrusion (21) protrudes toward the metal sheet (10), and crosses the protrusion (11); and an elastically deformable portion (22) provided on the metal sheet (20) in such a manner that the elastically deformable portion (22) surrounds the protrusion (21), the elastically deformable portion (22) being elastically deformable at the time of the fastening with the screw (51). The end of the first protrusion (11) and the end of the second protrusion (21) contact each other at the time of the fastening with the screw (51).

The invention discloses an ultra-wideband standing wave bridge based on an exponential gradient micro-strip balun and an assembly method thereof, which are used as directional devices in scenes such as a vector network analyzer and the like, and aim to solve the problem that the existing standing wave bridge is narrow in working band and is difficult to meet the ultra-wideband measurement requirement. The method is characterized in that the index gradual change microstrip Balun is adopted to realize balance-to-unbalance conversion so as to expand the upper limit of the working frequency; a ferrite magnetic ring is loaded at a single-end port of the balun so as to extend the lower limit of the working frequency; a film resistance technology is applied to minimize the influence of parasitic parameters; electromagnetic shielding is realized through a metal cavity structure, and a wave-absorbing material is adhered to the inner wall of the cavity to suppress cavity resonance. The ultra-wide working bandwidth of 10 MHz to 40 GHz is finally achieved, the frequency band from short waves to millimeter waves is covered, and the measurement requirement of a modern ultra-wide-band system can be effectively met.

A housing half (110) for a housing (100) comprising a housing half (110) and a further housing half (115) for an electrical component for a vehicle, includes a receiving surface (130) that extends circumferentially along an edge of the housing half (110) and is shaped to receive a sealant (120). It also includes a web (125) that extends circumferentially along an inner surface (145) of the receiving surface (130) facing an interior of the housing half (110) and has a smooth surface shaped to form an EMC seal together with a smooth counter surface (140) of the further housing half (115).Furthermore, the housing half (110) has a contour (135) that runs along an outer surface (150) opposite the inner surface (145) of the receiving surface (130) and is shaped to allow the formation of a sealant bead when the housing half (110) and the other housing half (115) are joined together to form the housing (100).

To provide a technology suitable for countering electromagnetic noise by utilizing metal contact between a circuit board and a housing.SOLUTION: An exemplary electronic device includes a circuit board carrying electronic components and a metal housing that houses the circuit board. The housing has an inner wall on which the circuit board is placed and that surrounds the electronic components, and a protrusion that is provided on a surface of the inner wall facing the circuit board and that makes metallic contact with the circuit board.SELECTED DRAWING: Figure 4

The invention discloses a shielding shell assembly, a connector and an electronic product. The shielding shell assembly comprises a shielding shell; and a mounting frame fixed to an outer side of the shield case. The mounting frame is provided with a loading plate which is suitable for being pressed on the top surface of a loading frame of a circuit board, so that the shielding shell is suitable for being loaded onto the circuit board through the loading plate. In the invention, the shielding shell of the connector is pressed and loaded on the loading frame of the circuit board through the loading plate. Therefore, a pin is not required to be formed on the shielding shell, and a jack jointed with the pin is not required to be formed on the circuit board. Wiring on the circuit board is not affected, the size of an electronic product can be reduced, and the electrical performance of the electronic product can be improved.

A receptacle connector assembly includes a receptacle cage having shielding walls including a top wall, a first side wall extending from the top wall to a bottom of the receptacle cage, and a second side wall extending from the top wall opposite the first side wall to the bottom of the receptacle cage. The receptacle connector assembly includes an EMI shield coupled to the receptacle cage at the front end. The EMI shield has a shield member including a base electrically connected to the receptacle cage and spring fingers that extend from the base to distal ends. The EMI shield includes a gasket between the receptacle cage and the corresponding spring fingers. The gasket electrically connects the corresponding spring fingers to the receptacle cage.

The present invention provides a magnetic device with a shielding layer and a method for manufacturing an inductor. The magnetic device has a body, wherein a shielding layer is formed on the body to prevent magnetic field leakage to the outside of the magnetic device, thereby reducing electromagnetic interference and the size of the magnetic device.

A self-adaptive shielding device is suitable for a lens or a window of a piece of equipment provided with an electrically conductive enclosure containing an optical or RF sensor. The device includes a shielding screen having a switchable RF shielding mesh of micrometric pitch at least partially surrounded by a border of insulator-metal transition material arranged between the mesh and an electrically conductive envelope. A susceptor element is arranged facing the insulator-metal transition material and transforms incident electromagnetic energy (RFH) into activation heat for the insulator-metal transition material. The susceptor element causes a transition to the conductive state of the insulator-metal transition material under the action of the electromagnetic energy so as to electrically connect the mesh to the electrically conductive envelope when the incident electromagnetic energy exceeds a given threshold.

An aluminum housing for an electrical device with an outer housing wall and at least a first and a second housing chamber that are electromagnetically shielded from each other, wherein the shielding is provided by at least one inner housing wall of the housing and at least one shielding plate which is in electrical contact with the housing walls of the housing in its peripheral area, is characterized according to the invention in that the shielding plate is made of aluminum, and that the electrical contact with the housing walls of the housing is provided at least sectionally by at least one spring element of the shielding plate which rests against a housing wall under spring preload.

Electronic circuit modules including a housing, electronic circuit board disposed in the housing, and a high density electrical connector to couple an electrical cable between the electronic circuit board and another circuit board or electrical connection point are disclosed. Some embodiments may include a heat sink, spring plate, and antenna coupled via coaxial cable through the heat sink to the electronic circuit board.

An EMC housing for an electrical component, having at least a first housing part and a second housing part, which are connected to one another via a sealing surface and together enclose a volume of the housing in a liquid-tight manner. A plate-shaped third housing part is arranged between the first housing part and the second housing part within the volume. The third housing part has a plurality of elastically deformable contact elements in at least one connection region with at least one of the first housing part and the second housing part for forming an electrically conductive connection between the housing parts.

The present invention discloses an EMC wave-filter shielding structure and an EMC wave filter. The structure includes 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 EMC wave-filter shielding structure provided by the present invention makes the filter apparatuses independent of a main power circuit board as a whole, increasing the distance between an electromagnetic interference source and a control signal, and enhancing quality of control signals.

An electronic control device includes a circuit board on which an electronic component is mounted, a conductive housing that houses the circuit board, and an electromagnetic wave shielding layer interposed between the circuit board and the housing. The housing has board pedestals for fixing the circuit board, and the electromagnetic wave shielding layer has compression regions pressed by the circuit board at positions away from the board pedestals by a predetermined distance.

A shielding shell assembly includes a shielding shell and a mounting frame. The mounting frame is fixed to an outer side of the shielding shell. The mounting frame has a loading plate pressed against a top surface of a loading frame for a circuit board. The shielding shell is loaded onto the circuit board by the loading plate.

A power electronics unit for a vehicle, comprising: a housing; a boundary, which divides the housing into an interference reduction area and an interference source area, and separates the interference reduction area from the interference source area; high-voltage power electronics inside the interference source area; and a printed circuit board, at least part of which is inside the interference reduction area, wherein there is a low-voltage connection for low-voltage signals in the interference reduction area, wherein the low-voltage signals are sent to and from a higher-order system in the vehicle, and wherein there is a battery connection to the power electronics unit on the printed circuit board inside the interference reduction area. The present disclosure also relates to a vehicle that has a battery, and electric motor, and a power electronics unit.

The invention provides a cable transfer shielding device for an electromagnetic compatibility test, which is arranged on a shielding wall between a darkroom and an electrical testing room and comprises a darkroom outer transfer box, a darkroom inner transfer box and a transfer cable. The dark room external transfer box further comprises an external transfer box body, an external transfer box door and an external connector substrate, and an elastic shielding part is arranged at the contact part of the external transfer box door and the external transfer box body, so that the external transfer box door forms reliable conductive contact with the external transfer box body along the periphery of the external transfer box door after being closed. The cable transfer shielding device provided by the invention can provide stable and reliable electromagnetic shielding in an electromagnetic compatibility test, and effectively avoids electromagnetic leakage at a cable wall penetrating position.

An inverter may include a housing having a body and a protruding rim extending from the body, wherein the protruding rim surrounds a cavity that extends through to the body. An inverter may include one or more electrical receptacles, wherein the one or more electrical receptacles are disposed within the cavity such that a portion of at least one of the one or more electrical receptacles extends above the protruding rim. An inverter may include a metal sheet, wherein the metal sheet is molded to an inner surface of the protruding rim such that the protruding rim extends past the metal sheet, and wherein the metal sheet circumferentially surrounds the cavity.