447results about "Resistor mounting/supporting" patented technology

Systems, apparatuses, and methods for a modular resistor grid system include a mount and a plurality of modular resistor grid assemblies that interchangeably couple to the mount. At least two modular resistor grid assemblies are in the plurality. Each has a housing and a plurality of resistor plates. Each housing has input and output terminals. Each plurality of resistor plates is connected between the input and the output terminal of a housing. Each resistor plate has a thickness, and each plurality of resistor plates provides a target electrical resistance for a modular resistor grid assembly. A first modular resistor grid assembly has a first number of resistor plates with a first thickness. A second modular resistor grid assembly has a second number of resistor plates with a second thickness. The first number of resistor plates is greater than the second number. The first thickness is greater than the second thickness.

Systems, apparatuses, and methods relate to modular resistor grid assemblies having a “black box” resistance. The modular resistor grid assemblies include a first plurality of first resistor plates having a first thickness disposed within a first housing. The first housing has a first input and output terminal. The first resistor plates provide a target electrical resistance between the first input output terminal. A second plurality of second resistor plates having a second thickness smaller than the first thickness is disposed within a second housing. The second housing has a second input and output terminal. The second resistor plates provide the target electrical resistance between the second input and output terminal. The first and second housing interchangeably couple to a resistive braking system. The first plurality includes a first number of first resistor plates, and the second plurality includes a second number of second resistor plates less than the first number.

The utility model discloses an FPC, CCS subassembly, battery module and vehicle, said FPC includes FPC body and FPC branch, said FPC branch includes and at least one connecting portion, one end of said connecting arm is conductively connected with said FPC body, the other end of said connecting arm overhangs and is equipped with NTC fixed portion, said connecting arm is bent to form at least one bending portion, and said bending portion is equipped with the NTC fixed portion. The orthographic projection of the connecting part in the thickness direction of the FPC body covers the FPC body, and at least one bending part is connected with at least one connecting part. According to the FPC provided by the utility model, the orthographic projection in the thickness direction of the FPC body covers the FPC body, so that the connecting part can be connected with the FPC body, and the FPC body can be used for limiting the warping problem of the bending part. Therefore, the risk of warping of the FPC branches can be reduced, and the reliability of the battery module is improved.

The invention discloses a thermistor mounting method and related equipment. The thermistor mounting method comprises the following steps: applying micro-power alternating bias excitation to a thermistor to obtain cold-state thermal resistance reference data; mounting a thermistor on the surface of the solder paste, collecting real-time resistance data in a temperature rise process, and performing normalized difference according to cold-state thermal resistance reference data to obtain a normalized dynamic resistance curve; performing derivative continuity and extreme value distribution analysis on the curve to obtain a wetting connectivity index; when the wetting connectivity index reaches a preset threshold value, executing second-order extreme value spacing analysis to obtain interface heat flux density distribution, calculating an interface thermal resistance dispersion vector field, and adjusting the transmission chain speed and furnace chamber airflow parameters according to the interface thermal resistance dispersion vector field; and a backtracking dynamic resistance curve is obtained in the cooling process, and the backtracking dynamic resistance curve and the standardized dynamic resistance curve are differentiated to obtain a curing quality factor. According to the invention, real-time identification in a defect germination stage and instant correction in a solder solidification window stage in a thermistor mounting process can be realized, and the mounting quality and reliability are improved.

The utility model provides a lightning impulse protection device for a transformer, and relates to the technical field of lightning arresters, the lightning impulse protection device for the transformer comprises a mounting plate, two ends of the mounting plate are respectively provided with a protection mechanism, the protection mechanism comprises two rectangular blocks, the inner walls of the two rectangular blocks are rotatably connected with a rotating shaft, and the rotating shaft is connected with the mounting plate. A rotating shaft is arranged on the outer side of the screw rod, a coil spring is arranged on one side of the rotating shaft, an L-shaped rod is fixedly connected to the outer surface of the rotating shaft, and a piston block is rotationally connected to one end of the screw rod. The piston block slides on the inner wall of the rectangular groove by rotating the screw rod, so that the airbag sheet deforms and expands outwards, the outer side of the joint of the lightning arrester body and the high-voltage line is wrapped and protected, the influence of rain and sun on the outer side of the joint of the high-voltage line and the lightning arrester body is reduced as much as possible, the service life of the lightning arrester body is prolonged, and the use effect of the lightning arrester body is improved.

To prevent solder wetting on a resistor formed of a high specific resistance material, that can be used in the applications for large current detection.SOLUTION: A multilayer resistor includes a resistor having a plate shape and including a first flat surface and a second flat surface in a thickness direction, and a first electrode formed on the first flat surface and a second electrode formed on the second flat surface. The resistor includes a metal body formed of an electroconductive metal material, and an insulating particle formed of an insulating material. The insulating particle includes a first insulating particle with a particle diameter of 5 μm or more. At the implementation on a printed board, an end surface of the resistor is exposed and the second electrode is connected through the solder.SELECTED DRAWING: Figure 1

The embodiment of the invention discloses a composite metal foil and a circuit board. The composite metal foil comprises a first resistance layer; the first resistance layer is a thermistor layer; the preset percentage area of the first resistive layer has or does not have gaps in the forming process, and when the first resistive layer has the gaps, the number of the gaps is smaller than 50 within any 50 [mu] m range in the plane direction of the first resistive layer; wherein the notches are gullies which are observed in the slicing state of the composite metal foil and are formed in the thickness direction of the first resistance layer. The number of the notches in the first resistance layer is limited, and the composite metal foil is light and thin and small in size, so that the problem that the temperature control element or the thermistor in the prior art is large in size when heating monitoring is carried out on an electronic component is solved; the integration of the circuit board is not facilitated; and small components cannot be monitored.

The invention relates to a use method of a suspension type independent tank closing resistor unit structure, the closing resistor unit structure comprises a plurality of resistor sub-strings which are located in a shell and are connected in series, and each resistor sub-string comprises an insulating rod which is arranged on a front end cover and a rear end cover in a delta shape; the insulating rods are provided with a plurality of I-wheel-shaped insulating sheets which are arranged along the axial direction of the insulating rods, the insulating sheets are internally provided with annular resistor discs, concave rings of the insulating sheets are provided with annular deformation grooves located at corners, and the corresponding resistor discs on different insulating rods are connected through copper sheets. Edge fragmentation of the resistor disc is avoided, and deflection deformation of the cross-core insulating rod is reduced; through the arrangement of the outer lining, impact damage of airflow to the appearance surface structure of the resistor disc in the inflation and deflation process is prevented, and even if slight abrasion exists, dust particles fall into the trap through the arrangement of the pull-out type particle trap on the shell and the slag falling hole of the outer lining, and insulation breakdown is avoided.

The utility model relates to the technical field of power equipment, and discloses an explosion-proof lightning arrester. The anti-explosion lightning arrester comprises a lightning arrester body, a connecting seat, a copper core, a plurality of resistor discs, an air outlet pipe, a first limiting frame, an air blocking plate and a first elastic piece, the lightning arrester body is fixedly connected with the connecting seat, the copper core is arranged in the lightning arrester body, and the plurality of resistor discs are arranged in the lightning arrester body. The upper end and the lower end of the lightning arrester body are each provided with two connected and communicated air outlet pipes, first limiting frames are fixedly connected into the air outlet pipes, air blocking plates are arranged on the first limiting frames in a sliding mode, and first elastic pieces are arranged on the air blocking plates in a sleeving mode. Air flow in the lightning arrester body extrudes the air blocking plates to move towards the sides far away from each other to open the air outlet pipe, the air flow in the lightning arrester body is discharged through the air outlet pipe, so that pressure in the lightning arrester body is relieved, and explosion occurs due to the fact that the air pressure in the lightning arrester body is too high.

A system includes an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module, the power module including a thermistor assembly, the thermistor assembly including: a conductive layer including a trench; a thermistor connected to the conductive layer and disposed across the trench; and a first height control feature between the conductive layer and the thermistor.

The invention discloses a resistor carrier, a resistor pin bending system and a resistor pin bending method. The resistor carrier comprises a support body which is strip-shaped and has two opposite sides in the width direction of the support body; and the retaining structure is positioned on the top surface of the support body and is used for retaining the resistor body of the resistor. When the resistor body of the resistor is held in the holding structure, a pair of pins of the resistor are suspended above the top surface of the supporting body and extend out of the two sides of the supporting body respectively, so that the pins of the resistor are allowed to be bent relative to the resistor body. According to the resistor pin bending system, automatic bending of the resistor pin can be achieved, the resistor pin bending efficiency is improved, automatic flow line production of electronic products can be achieved, and the production efficiency of the electronic products is greatly improved.

A resistor assembly, in particular a resistor assembly for a power combiner, includes a resistor chip and a clamping element for fixing the resistor chip to a cooling element, the clamping element having a clamping arm that applies pressure to the resistor chip.

This invention discloses a high-vibration-resistant high-voltage surge arrester, specifically relating to the field of surge arrester technology. It includes a surge arrester body, a buffer assembly, and an adjustment assembly. Through the buffer assembly, this invention can release the blockage of the vent hole when the surge arrester body experiences severe, large-amplitude vibrations. It can adjust the buffer rigidity, allowing the first piston to continue moving downwards for buffering, thus improving the buffering effect. Furthermore, as the first piston moves to the bottom of the first chamber, it gradually blocks the connecting hole, acting as a throttling device, gradually reducing the oil output within the connecting hole. This further slows the descent speed of the first piston, thus providing multi-stage buffering. This prevents buffer failure and impacts under large-amplitude vibrations, further improving the buffering effect and extending the service life of the surge arrester.

The invention relates to the technical field of rail transit vehicle power supply protection, in particular to a vehicle-mounted lightning arrester which comprises a body, a base, a sealing cavity, a flow guide passage and a restraint mechanism, and when pressure in the sealing cavity reaches the opening condition of a pressure relief opening and under the action of directional jet flow formed by a jet opening, the body is separated from a limiting piece; and the rotating shaft rotates towards the off-position direction around the rotating supporting part. According to the application, destructive voltage breakdown is taken as an action power source, gas is generated and rapidly expanded due to electric arc during breakdown of the sealing cavity in the body, after the cavity pressure rises to a set threshold value, the pressure relief opening with the pressure opening characteristic is selectively opened, and expanded gas is directionally discharged from the spraying opening along the flow guide passage; the offset of the spraying port relative to the rotary supporting part converts the spraying momentum into a dumping moment to the body, so that the body is quickly and certainly switched to the off position from the working position under the condition of no additional operation, the electric connection interruption with the high-voltage conductor is formed, and the risk of secondary pressurization of the reclosing is reduced.

The utility model discloses a zinc oxide lightning arrester convenient to fix and install, which comprises a zinc oxide valve core, the bottom end of the zinc oxide valve core is provided with a stabilizing seat, the bottom end of the stabilizing seat is provided with a connecting rod, the bottom end of the connecting rod is provided with a reverse cone, and the bottom end of the stabilizing seat is sleeved with a stabilizing groove plate. An elastic plate is rotatably mounted at the top end of the pushing disc, a fixed gripper is welded to the top end of the elastic plate, the pushing disc is pushed through a pushing block to enable the elastic plate to slide on the inner side of a sliding groove, and at the moment, the fixed gripper slides on the inner side of the sliding groove, so that the fixed gripper can move out of the inner side of the reverse cone; at the moment, an operator can replace the zinc oxide lightning arrester, automatic locking is performed through a reverse cone and a fixed gripper, the operation steps are simple and convenient, tools carried in high-altitude operation can be reduced, the installation efficiency is improved, the high-altitude operation time is further shortened, and the safety is improved.

The present application relates to the technical field of high-power resistor, conductive connection, electrothermal technology, and provides a production method of a high-power resistor with separated resistor sheets and the high-power resistor. The method comprises: processing a metal material through a laser device to make a resistor shell with convection heat dissipation holes; processing a plurality of cuboid-shaped resistor sheets, each resistor sheet being provided with an insulating support at an end portion and being capable of being connected in series and parallel according to resistance requirements as an independent resistance unit; and installing the resistor sheets into the shell at intervals to form a convection space of a preset height between adjacent resistor sheets, which is communicated with an external environment through the convection heat dissipation holes. The method of the present application obtains a high-power resistor composed of independent resistance units through a separated design and convection heat dissipation, effectively reduces the thermal load and energy consumption of the high-power resistor, and prolongs the service life.

The present invention provides an improved plastic-sealed patch thermal varistor, comprising a thermistor chip, a varistor chip is arranged on one side of the thermistor chip, and a connecting piece is electrically connected to the lower part of the varistor chip and the thermistor chip, wherein the middle part of the right part of the connecting piece is integrally connected with a first pin; the upper part of the thermistor chip is electrically connected with a second pin; the upper part of the varistor chip is electrically connected with a third pin; and the outer sides of the thermistor chip and the varistor chip are provided with a plastic sealing layer. The present invention can inject solder paste into a paste storage conductive box through a tin injection port, so that the solder paste can be individually isolated through the paste storage conductive box, thereby avoiding the problem of bridging of the solder paste, and then avoiding the problem of short circuit after the thermal varistor is welded, and achieving the effect of paste storage welding.

This utility model discloses a stable and reliable surface mount resistor, belonging to the field of surface mount resistor technology. It includes a surface mount resistor body, with an upper mounting plate and a lower mounting plate respectively positioned above and below the body. Two sets of support rods are fixedly connected to the upper surface of the lower mounting plate, with the top of each set of support rods contacting the bottom surface of the upper mounting plate. Each set of support rods has a snap-fit ​​groove at its top. Two sets of snap-fit ​​blocks are fixedly connected to the bottom surface of the upper mounting plate. This stable and reliable surface mount resistor, through the coordination of the surface mount resistor body, upper mounting plate, lower mounting plate, support rods, snap-fit ​​grooves, snap-fit ​​blocks, and limiting frame, conveniently and stably utilizes heat dissipation and heating structures to improve the working environment of the surface mount resistor body. Furthermore, by utilizing a heating element, a semiconductor cooling element, and a temperature sensor, it strives to ensure that the surface mount resistor is in a constant temperature environment, thus enabling stable and reliable use of the surface mount resistor.

The present application relates to the field of lightning arresters, and specifically discloses a single-column multi-parallel independent unit lightning arrester, comprising a first unit and a second unit; the first unit comprises a first upper hardware, a first insulating jacket, and a first lower hardware connected in sequence, a first resistor, a first metal pad, and a first electrode are sequentially arranged inside the first insulating jacket along the direction from the first upper hardware to the first lower hardware, a wire is connected between the first upper hardware and the first lower hardware, the wire is passed between the first resistor, the first metal pad, and the first electrode, and a second insulating tube is arranged on the outside of the wire; the second unit comprises a second upper hardware, a second insulating jacket, and a second lower hardware connected in sequence, a second resistor, a second metal pad, and a second electrode are sequentially arranged inside the second insulating jacket along the direction from the second upper hardware to the second lower hardware. The present application sets up multiple parallel independent unit lightning arresters in one place, which is suitable for places with high protection performance requirements and difficult maintenance.

The utility model relates to the technical field of potentiometers, and discloses a potentiometer structure capable of being quickly assembled, which comprises a potentiometer body, a potentiometer shell is fixedly mounted on the outer surface of the potentiometer body, and a quick fixing component is arranged on the potentiometer shell. The rapid fixing assembly is used for rapidly and firmly fixing the potentiometer body in a mounting hole in a PCB, the rapid fixing assembly comprises a sliding block, a fixing ring, arc-shaped supporting plates, a trapezoidal groove, a locking groove and a fixing cutting edge, and the multiple arc-shaped supporting plates arranged in the rapid fixing assembly are used for fixing the potentiometer body; the problems that in a traditional mode, when a potentiometer is installed, only pins of the potentiometer are inserted into a PCB to be fixed, when a rotating shaft of the potentiometer is subjected to swing force forming a certain angle with the axial direction, contact force between a movable contact in the potentiometer and a resistor body is affected, the surface of the resistor body is damaged, adjustment fails and the like are solved. And the service life of the potentiometer is further influenced.

The invention provides a valve group and a valve tower, and belongs to the field of semiconductor devices. The valve group comprises coolers arranged at intervals in the thickness direction, damping capacitors and damping resistors, the damping capacitors are arranged between every two adjacent coolers in a crossing mode, capacitor supports used for installing the damping capacitors are arranged on the side faces of the coolers, and the two ends of each damping capacitor are connected with the capacitor supports on the two coolers respectively. In the two capacitor supports at the two ends of the damping capacitor, one is a conductive support, the other is an insulating support, one end of the damping capacitor is communicated with the corresponding cooler through the conductive support, the other end of the damping capacitor is communicated with one end of the damping resistor through a wire or a conducting bar, and the other end of the damping resistor is communicated with the cooler where the insulating support is located. The valve tower comprises the valve group. The valve bank is integrally designed, so that the structure of the valve bank is more compact, and the area required for construction of a valve tower is reduced.

The utility model discloses a high-temperature-resistant winding resistor device which comprises a ceramic winding reel, two ends of the ceramic winding reel are fixedly connected with pin caps, the circumferential outer wall of the ceramic winding reel is connected with a resistance wire in a winding mode, a contact pin is arranged between the ceramic winding reel and the pin caps in a penetrating mode, the outer side of the resistance wire is sleeved with an insulating shell, and the outer side of the insulating shell is sleeved with an insulating sleeve. A plurality of heat dissipation fins are clamped on the outer wall of the circumference of the insulating shell, and a plurality of heat dissipation holes are formed in the circumference of the insulating shell. According to the utility model, heat generated by the resistance wire is efficiently transmitted to the insulating shell through the insulating heat-conducting glue, and then is dissipated into the air through the heat dissipation fins, so that the resistance wire is subjected to heat dissipation and cooling at a high speed, and meanwhile, the heat of the resistance wire is dissipated from the heat dissipation holes, so that the resistance wire is better subjected to heat dissipation and cooling, and the service life of the resistance wire is prolonged. Therefore, the resistance device is prevented from generating stress due to high-temperature expansion, the resistance wire is prevented from loosening and deforming, and the precision and stability of the resistor are prevented from being reduced.

The utility model provides a precision adjustable resistor device, relates to resistor technical field, precision adjustable resistor device, including base, cover plate, resistor and positioning device, base and cover plate are welded together after being positioned by the positioning device, the resistor is installed in base, the positioning device includes cylinder seat, fixed column, elastic steel plate and limit piece, the fixed column is fixed in the cylinder seat, the elastic steel plate is fixed in the cylinder seat, and the limit piece is fixed in the cylinder seat. The cylinder base is fixedly installed on the face, facing the base, of the cover plate, the fixing column is fixedly installed in the cylinder base, the elastic steel plate penetrates through the fixing column, the limiting piece is fixedly installed on the elastic steel plate, a through hole is formed in the cylinder base, and when the elastic steel plate is in a non-compressed state, the limiting piece movably penetrates through the through hole, and a groove matched with the cylinder base is formed in the top of the base. A limiting groove is formed in the inner wall of the groove, before the cover plate and the base are welded, the cylinder base is aligned to the groove, when the limiting piece is extruded by the inner wall of the groove, the elastic steel plate is also extruded, and when the limiting piece reaches the limiting groove, the positioning effect is achieved.

An electronic device includes: a plurality of electronic components, each including a pair of terminals; a support member including a support surface that supports the plurality of electronic components; a wiring layer formed on the support surface; and a sealing resin covering each of the plurality of electronic components. The wiring layer includes a first wiring section to which one of the pair of terminals of each of the plurality of electronic components is bonded. Electrical characteristics of the plurality of electronic components are equivalently represented by a single circuit symbol in a circuit diagram.

The invention relates to a resistor structure comprising at least an electrically insulating substrate in a cylindrical form, at least one electrically conductive terminal directly or indirectly provided on the substrate, at least one resistive path directly or indirectly and at least partially provided on the substrate and directly or indirectly joined to the terminal, the resistive path running helically at least partially along the cylindrical form of the substrate and comprising at least one resistive trace, characterized in that the geometry in connection with the resistive path is configured such that an intensity of the electrical field is at least in parts reduced.

The utility model discloses a surface-mounted zinc oxide varistor which comprises a voltage-sensitive ceramic chip, surface electrodes and side electrodes positioned on the upper side and the lower side or the lower side of the surface electrodes are arranged on bosses at the two ends of the voltage-sensitive ceramic chip along the length direction, and the side electrodes are used for adhering and positioning solder paste during reflow soldering, can be horizontally laid on a PCB (Printed Circuit Board) and are prevented from rolling. According to the utility model, the bosses at the two ends of the pressure-sensitive ceramic chip increase the distance between the side electrodes and different side surface electrodes to exceed the shortest distance between the two surface electrodes, so that the problems of short distance and pressure-sensitive voltage drop caused by the side electrodes are avoided; and the pressure-sensitive ceramic chip is provided with a boss height interval when being welded on the PCB so as to prevent solder paste from polluting the ceramic body at the lower side edge.

The present application is directed to a method for establishing an electronic connection to an electronic component and chip assembly. The method includes the following steps: an electronic component having a first weld is provided; a first electrical contact is also provided; the first weld and the first electrical contact are in mechanical contact with each other; then, while the mechanical contact is maintained, a welding current is applied capable of welding the electrical contact and the weld together.

The utility model discloses a locomotive brake resistor quick replacement device, which relates to the technical field of brake resistor replacement devices and comprises a mounting frame, mounting openings are formed in two sides of the mounting frame in a penetrating manner, fixing mechanisms are arranged in the mounting openings, and a wire placement groove is formed in the back surface of the mounting frame. The fixing mechanism comprises a mounting groove formed in the inner bottom wall of the mounting opening, clamping plates are arranged in the mounting groove, and symmetrical limiting clamping strips are arranged on the upper surfaces of the two clamping plates. According to the quick replacing device for the locomotive brake resistor, due to the arrangement of the fixing mechanism, the clamping plates on the two sides are pushed under the action of the spring to clamp and fix the brake resistor device in the mounting frame, so that the brake resistor device can be mounted and dismounted, and when the brake resistor device is dismounted, the push rod is pushed to drive the clamping plates to move in the mounting grooves; and the brake resistor can be taken out from the mounting frame, so that the replacement efficiency of the brake resistor is improved while the operation is simple.

The high-temperature-resistant and corrosion-resistant ceramic resistor comprises a ceramic resistor, the ceramic resistor is placed in a support, first placing grooves are formed in the centers of the two sides of the support, pins of the ceramic resistor are placed in the first placing grooves, through grooves are formed in the centers of the two ends of the support, and second heat dissipation assemblies are arranged in the through grooves. A plurality of clamping grooves are formed in the two ends of the bottom of the inner surface of the support, first heat dissipation pieces are connected to the clamping grooves in a clamped mode, second heat dissipation assemblies are arranged at the two ends of the support where the ceramic resistor is installed, and heat generated in the working process of the ceramic resistor is guided into sliding blocks through heat conduction plates through the second heat dissipation assemblies; and the heat is finally guided into the second cooling fins, and is guided out through the second cooling fins, so that the bracket is provided with a corresponding heat dissipation mechanism, the heat dissipation of the ceramic resistor is carried out, and the heat dissipation of the ceramic resistor is prevented from being influenced after the ceramic resistor is mounted through the bracket, so that the high-temperature-resistant characteristic of the ceramic resistor is prevented from being influenced.