26results about "Coil/loop resistive elements" patented technology

The application provides a double-row lead frame resistance. The double-row lead frame resistance comprises a lead frame, a resistance, and the two ends of the first coil and the second coil are respectively installed with the lead wires; a protective cover; a cooling mechanism, the inside of the protective cover is fixedly connected with the supporting rod, the bottom end of the supporting rod is installed with the air bag; the top end of the supporting rod is internally installed with the fixed block and the fixed frame, the inside of the fixed block is slidably connected with the piston, the inside of the piston and the fixed block is respectively installed with the magnetic ring, the magnetic rings are attracted to each other; the inside of the fixed frame is slidably connected with the sliding rod, the sliding rod is fixedly connected with the piston, the side wall of the sliding rod is sleeved with the spring, and the two ends of the spring are respectively connected with the fixed frame and the piston; a cooling mechanism; a connecting mechanism. The double-row lead frame resistance provided by the application has the advantages of eliminating the self-induction of the coil, reducing the eddy current, and facilitating the dissipation of the heat inside the coil.

A battery pack according to one embodiment of the present invention includes: a battery module in which a plurality of battery cells are mounted; and a discharge member electrically connected to the battery module, wherein the discharge member includes: a frame member having an open upper portion and containing coolant; a top cover for covering the upper portion of the frame member; and a resistor mounted in the frame member, wherein both ends of the resistor are exposed to the outside of the discharge member and electrically connected to the battery module.

The application relates to an overcurrent-preventing resistor, which comprises a shell and a resistance coil, the bottom of the shell is internally provided with a bobbin and externally provided with a first pin and a second pin, the resistance coil is electrically connected to the first pin and the second pin, the resistance coil is sleeved on the bobbin and electrically insulated from the bobbin, the bobbin is internally provided with a magnetic piece, the magnetic piece is in sliding connection with the bobbin, the magnetic poles of the magnetic piece are distributed along the axis of the bobbin, the magnetic piece is electrically connected with the bobbin, the top of the inside of the shell is provided with an electric contact opposite to the bobbin, the top of the outside of the shell is provided with an indicating lamp electrically connected with the electric contact, and the inside of the shell is provided with a wire for electrically connecting the second pin. The application has the functions of quickly determining overcurrent in a laboratory and giving a warning.

The present invention relates to an electrical resistance (1) extending between a first end (2) and a second end (4), comprising a plurality of modules (10) made of an electrically insulating material and a winding (11) wound in turns around the modules (10), each of the modules (10) having an outer peripheral surface (12) and an inner peripheral surface, the modules (10) being arranged side-by-side from the first end (2) to the second end (4) of the electrical resistance (1), thereby defining a volume (44) configured for the circulation of a cooling fluid.

Resistor arrangement (10) for a tap changer (1) for uninterrupted switching between winding taps of a transformer, the resistor arrangement (10) comprising at least one resistive element (20) which is held by at least two resistive holders (30), characterized by: - a base plate (11) with at least one opening (12) on which the at least two resistance holders (30) for receiving the resistance element (20) are arranged; - a guide (31) formed in each resistance holder (30), wherein each guide (31) positions a first end (201) or a second end (202) of the resistance element (20) with respect to a longitudinal direction (L) between the two resistance holders (30), and wherein the resistance element (20) can be inserted through the opening (12) into each of the guides (31); and - two contact points (24) of the resistance element (20) which, when a resistance element (20) is inserted into the resistance holder (30), can be electrically contacted by a respective contact (40) of the tap changer (1).

The utility model relates to a kind of fuse resistor structure with specific fusing temperature, including resistance core, fuse conductor, conducting connecting piece and insulating encapsulation layer.The resistance core is used to provide current-limiting function, fuse conductor is set in current path, made of alloy material under predetermined temperature or current condition fusing;Conducting connecting piece connects the both ends of resistance core for external electrical connection, and insulating encapsulation layer is used to provide mechanical protection and electrical insulation.When current or temperature exceeds set threshold, fuse conductor fuses, thereby cutting off circuit, with the advantages of current-limiting and overcurrent protection integration, compact structure, fast response.

The technical problem that the utility model wants to solve provides a kind of winding resistance structure, this winding resistance structure is easy to install, and heat dissipation is sufficient, and resistance parameter can be adjusted by adjusting resistance length.The winding resistance structure includes ceramic framework and winding resistance wire, ceramic framework includes first ceramic piece, second ceramic piece and multiple third ceramic pieces and is connected by connecting structure;First ceramic piece, second ceramic piece and multiple third ceramic pieces are provided with ceramic spiral rib along the axial direction and form spiral groove, and winding resistance wire is wound in spiral groove body, and the both ends of winding resistance wire are respectively provided with connector;By adjusting the quantity of multiple third ceramic pieces, the total length of ceramic framework and the length of winding resistance wire are adjusted, so that the parameter of resistor reaches the required parameter;According to the need, the pitch of ceramic spiral rib is adjusted, so that the entire winding resistance wire obtains the required sufficient heat dissipation space, and can be fully heat-dissipated.

The utility model discloses an internal winding resistor, which particularly relates to the technical field of resistors and comprises an insulating rod, a notch groove is arranged on the outer surface of the insulating rod, a resistor winding is arranged in the middle of the notch groove, iron caps are symmetrically sleeved at two ends of the insulating rod, a sealing ring is arranged on one side of each iron cap, and a groove is arranged on the other side of each iron cap. The side, close to the groove, of the iron cap is fixedly connected with a wire, and the insulating rod is sleeved with an insulating cylinder. According to the utility model, the groove matched with the resistor winding wire is arranged in the iron cap, so that when the iron cap is sleeved at two ends of the insulating rod, the iron cap is tightly attached to the resistor winding wire, and the iron cap can only rotate to be separated from the insulating rod through the matching of the resistor winding wire and the groove, but the iron cap can only rotate through the anti-skid groove on the surface of the iron cap; according to the iron cap, the attaching strength of the iron cap and the insulating rod can be improved after the insulating coating is arranged, the iron cap is prevented from rotating, and therefore the iron cap cannot be loosened when the iron cap is extruded.

The utility model relates to the technical field of resistors, in particular to an air-cooled follow-up load unit, which comprises an air duct, a motor fixed on the air duct, a rotating shaft mounted on an output shaft of the motor, a supporting disc fixed on the rotating shaft, and a plurality of supporting fan blades fixed on the supporting disc in a spaced manner in the circumferential direction, the air duct is provided with an external liquid groove, and the outer end part of each supporting fan blade is provided with an external leading-out terminal inserted into the external liquid groove; the air duct is provided with an internal liquid receiving groove; an inner leading-out terminal inserted into the inner liquid receiving groove is arranged at the inner end part of each supporting fan blade; the supporting fan blades are insulators, each supporting fan blade is wound with a resistance wire, and the two ends of each resistance wire are connected with the outer leading-out terminal and the inner leading-out terminal of the corresponding supporting fan blade respectively, so that the resistance wires are electrically conducted through the conductive liquid. Compared with an existing load, the resistance wire is wound on the fan blades of the fan, the fan runs to drive the resistance wire to rotate, wind resistance is basically not generated on the fan, the requirement for the fan is lowered, and meanwhile the heat dissipation performance is improved.

The utility model discloses a painted wire wound resistor which comprises a porcelain tube, clamping rings are sleeved at two ends of the porcelain tube, the clamping rings are fixed on two sides of the porcelain tube in a welding manner, alloy wires are uniformly wound on the outer wall of the porcelain tube, two ends of the porcelain tube are connected with a bracket through the clamping rings, the bracket is welded with the clamping rings, and insulating layers are arranged on the surface of the porcelain tube and the surfaces of the alloy wires. The clamping ring comprises a ring body, the ring body is provided with a plurality of fixing parts, the fixing parts can be bent in the radial direction of the ring body, in the first state, the fixing parts are of a straight strip-shaped structure, in the second state, the fixing parts are of a bent strip-shaped structure, and the fixing parts are matched to form a clamping jaw structure. According to the utility model, the snap ring is welded with the porcelain tube, the bracket is welded with the snap ring, and the porcelain tube is connected with the bracket through the snap ring, so that the resistor wound by the painted wire is integrated and is more convenient to install, and compared with a screw fixing mode, the bracket is welded with the snap ring, so that the vibration and impact resistance can be improved.

The pre-charging resistor comprises a shell, a resistor assembly and a slow heating layer, the shell comprises a bottom plate and a side plate, the side plate is arranged in the first direction, the bottom plate is arranged on the side, in the first direction, of the side plate, the side plate and the bottom plate are connected to define a containing cavity, the resistor assembly is arranged in the containing cavity, and the slow heating layer is arranged on the side, facing the resistor assembly, of the side plate. And the slow heating layer covers the side plate. According to the application, the slow heating layer is arranged to cover the side plate, so that the diffusion speed of heat generated when the resistor assembly works can be reduced, the speed of heat diffusion from the side plate to the outside of the shell is reduced, the temperature rise speed around the side plate is reduced, the influence on electronic components around the side plate is reduced, and the possibility of failure of the electronic components is reduced.

The utility model relates to the technical field of explosion prevention of resistors, in particular to an explosion-proof structure of a low-power wire-wound fusing resistor. The device comprises an explosion-proof layer, the explosion-proof layer is hollow and is provided with a fusing layer, the fusing layer is made of gypsum powder, the inner wall of the fusing layer is provided with a pre-splitting groove, the pre-splitting groove is communicated with a spiral groove located between the thickness of the inner wall and the thickness of the outer wall of the fusing layer, and the port of the spiral groove is provided with a preformed hole. The presplitting groove is formed in the fusing layer and used for discharging high-temperature gas generated in the fusing layer to the vacuum layer along the spiral groove, a magnetic rod is fixedly installed in the fusing layer, a copper lead is wound on the outer side of the magnetic rod, and after the copper lead in the resistor is fused, a large amount of generated high-temperature gas can break through the presplitting groove and then is guided into the vacuum layer through the spiral groove to be discharged. The advancing path and the gas storage space of the high-temperature gas are increased, the high-temperature gas is prevented from forming too high pressure and temperature in a local area in the resistor, the gas storage space of the high-temperature gas is larger due to the arrangement of the vacuum layer, and the risk of resistor explosion is avoided.

A battery pack includes a battery module in which a plurality of battery cells are mounted; and a discharge member electrically connected to the battery module, wherein the discharge member comprises a frame member having an open upper portion and containing a coolant, an upper cover for covering the upper portion of the frame member, and a resistor mounted in the frame member, and wherein both ends of the resistor are exposed to the outside of the discharge member, and are electrically connected to the battery module.

The application relates to the field of ceramic resistors, and particularly discloses a metal oxide ceramic resistor which comprises a framework, caps arranged at two ends of the framework and lead wires connected to the caps; the framework contains metal oxides, the metal oxides contain the following raw materials in parts by weight: 5-10 parts of tin oxide; 2-6 parts of nickel oxide; 4-9 parts of zinc oxide; 1-3 parts of residual metal oxides; the residual metal oxides include one or more of iron oxide, copper oxide and manganese oxide; and a preparation method is as follows: S1, oxide fermentation; S2, rubber mixing; S3, sintering; and S4, post-treatment. The metal oxide ceramic resistor can realize low resistance value of the resistor, reduce the brittleness of the resistor, and prevent the resistor from exploding; in addition, the preparation method has the advantages of simple operation and wide application.

The utility model belongs to the technical field of resistors, and discloses a resistor convenient to replace a resistance wire, which comprises a porcelain tube, connecting frames are arranged on two sides of the porcelain tube, movable rings are sleeved on the outer surfaces of the connecting frames in a threaded manner, connecting terminals are arranged in inner cavities of the movable rings, second elastic sheets are mounted on the inner sides of the connecting terminals, and the second elastic sheets are connected with the porcelain tube. The inner side of the second elastic piece extends to the outer portion of the movable ring. Through the arrangement of the second elastic piece and the movable ring, when an operator rotates the movable ring, the movable ring is driven to move out of the top of the first elastic piece, so that clamping between the first elastic piece and the second elastic piece is relieved, fixation of the resistance wire is relieved, the damaged resistance wire is screwed out of the porcelain tube, and then the replaced resistance wire is wound on the porcelain tube again; and along with the resetting of the movable ring, the replaced resistance wire is extruded again through the elastic sheet II and the elastic sheet I, so that an operator can replace the resistance wire conveniently, the operation is simple, and the use cost is reduced.

The utility model discloses a load resistor device. The load resistor device comprises an insulation support and a resistor rope. The insulating bracket comprises two panels which are arranged side by side at an interval; a plurality of rope penetrating holes through which the resistance rope can penetrate are formed in the panels; the resistance rope penetrates through the panel rope penetrating hole back and forth, the resistance rope comprises a heat-resisting main rope and a resistance wire, and the resistance wire is spirally wound on the heat-resisting main rope. When the load resistance box works, the resistance rope penetrates through the panel back and forth, heat is generated when the resistance rope works, the heat-resistant main rope is arranged to be of a main body structure, and the heat-resistant main rope can keep stable in size when the load resistance box works and is small in size change due to expansion caused by heat and contraction caused by cold by utilizing the heat-resistant performance of the heat-resistant main rope; after long-time use, good dimensional stability can be maintained, and short circuit between the resistance wires on the adjacent resistance ropes is avoided.

This application provides a wire-wound resistor assembly and an automotive transformer regulator. The wire-wound resistor assembly includes a hollow tube substrate, multiple sets of resistance alloy wires, multiple pins, and an insulating coating. The hollow tube substrate has through holes and multiple resistance regions. The multiple sets of resistance alloy wires are distributed in corresponding resistance regions, and each set of resistance alloy wires is arranged relative to its corresponding resistance region and wound along the length of the hollow tube substrate. The multiple sets of resistance alloy wires are integrated into the same hollow tube substrate. The multiple pins are connected to each set of resistance alloy wires and are located on the outer periphery of the hollow tube substrate. The multiple pins are used to connect to an external circuit board. The insulating coating is applied to the hollow tube substrate and integrally covers the multiple sets of resistance alloy wires, making the multiple sets of resistance alloy wires insulated from the external environment. This achieves the integrated application of multiple sets of resistance alloy wires, and the hollow tube substrate is compatible with multiple resistors of different resistance values, ensuring the centralized use of the wire-wound resistor assembly.

The high-temperature-resistant resistance wire comprises a resistance wire body and a supporting rod, the resistance wire body comprises a resistance wire, an insulating layer is formed on the outer side of the resistance wire through the extrusion technology, a first high-temperature-resistant layer is formed on the outer side of the insulating layer through the extrusion technology, and a second high-temperature-resistant layer is formed on the outer side of the supporting rod through the extrusion technology. A second high-temperature-resistant layer is formed on the outer side of the first high-temperature-resistant layer through an extrusion process, and a wear-resistant tungsten carbide layer is formed on the outer side of the second high-temperature-resistant layer in a coating manner. The first high-temperature-resistant layer and the second high-temperature-resistant layer are arranged on the outer side of the resistance wire, so that the high-temperature-resistant performance of the resistance wire can be improved, the resistance wire can normally work in a high-temperature environment, the use effect of the resistance wire is improved, and the service life of the resistance wire is prolonged. And the tungsten carbide powder is coated on the outer side of the second high-temperature-resistant layer to form the wear-resistant tungsten carbide layer, so that the wear resistance of the resistance wire can be improved, and the service life of the resistance wire is prolonged.

This application provides a speed-regulating resistor and an automotive electric fan. The speed-regulating resistor includes a resistor body, an insulating outer sheath, a first electronic pin, a second electronic pin, and a third electronic pin. A resistance wire is connected to a ceramic tube frame. The ceramic tube frame has a heat dissipation through-hole, which allows gas to pass through and dissipate heat from the ceramic tube frame and the resistance wire via airflow. The insulating outer sheath is fitted around the outer periphery of the ceramic tube frame and covers the resistance wire to provide external insulation. The first electronic pin is electrically connected to the left end of the resistance wire. The second electronic pin is electrically connected to the right end of the resistance wire. The third electronic pin is connected to the first electronic pin and is used to electrically connect to external components. The heat dissipation effect is achieved through the heat dissipation through-hole, and the ceramic tube frame can also conduct heat, thereby quickly conducting the heat generated by the resistance wire. The insulating outer sheath provides insulation while also accelerating the heat dissipation of the resistor body, thus improving the heat dissipation effect of the speed-regulating resistor.

The utility model relates to the technical field of circuit protection, in particular to a non-inductive lead-free winding resistor suitable for a high-frequency circuit, which comprises a resistor body, the resistor body comprises a base, a resistance wire is arranged on the surface of the base, a shielding cover is arranged on the outer surface of the base, the shielding cover is coated outside the resistance wire, and the resistance wire is arranged in the shielding cover. The non-inductive leadless winding resistor comprises a base, a resistance wire is arranged in the base, a shielding cover is arranged in the base, an identification layer for identification is arranged on the surface of the shielding cover, two ends of the base are fixedly connected with a pair of electrodes, and the electrodes are electrically connected with two ends of the resistance wire respectively. Therefore, the inductive effect of the resistor itself is almost completely eliminated, and inductive reactance caused by magnetic field interference is avoided. Therefore, the resistor can work stably in a high-frequency circuit, the influence on the phase and the amplitude of the signal is extremely small, and the quality and the transmission stability of the signal are effectively guaranteed.

The utility model relates to the technical field of resistors, in particular to a laminated winding resistor with high heat dissipation performance, which comprises a plurality of laminated resistor units, each resistor unit comprises a support frame and a plurality of resistor tubes, the periphery of each support frame is enclosed, the upper and lower parts of each support frame are open, and the resistor tubes are arranged in the support frames. Each resistor tube comprises an insulating supporting tube and a resistor strip spirally wound outside the supporting tube, the resistor strip is an exposed metal strip, the resistor strip comprises a main body section and a connecting section which are integrally and continuously bent and are sequentially alternated, the main body section is kept in a linear shape by virtue of the strength of the main body section, and the connecting section is in an arc shape. Every two adjacent main body sections are connected through a connecting section and are arranged in a V shape; a plurality of positioning grooves are formed in the outer side of the supporting pipe, the middle of each main body section is lapped and embedded in the corresponding positioning groove, and the supporting pipe is clamped by the two adjacent main body sections through the elasticity of the connecting section. Compared with the prior art, the resistor strip directly exposes air for heat dissipation, and the power density is higher.

The utility model relates to the technical field of winding resistors, in particular to a non-inductive dip-plating winding resistor structure. The resistor comprises a resistor rod, a resistor groove carved on the resistor rod, a layer of dip plating film formed in the resistor groove through a dip plating process, a winding resistor wire wound outside the resistor rod, end covers mounted at two ends of the resistor rod, and an insulating material sleeved on the outer side, and the winding directions of the resistor groove and the winding resistance wire are opposite to each other. The beneficial effects of the utility model are that according to the technical scheme, the threaded inner groove is engraved on the resistor rod, and the threaded film layer is formed in the inner groove through the immersion plating technology, so that the resistor can be kept stable and is not easy to break down or damage in a high-voltage environment while the film layer forms a resistance value, thereby ensuring the stability and reliability of a circuit.

The utility model relates to the technical field of resistors, in particular to a high-voltage tubular water-cooled resistor, which comprises a metal tube and a resistance wire arranged in the metal tube in a penetrating manner, metal bars are arranged at two ends of the metal tube in a penetrating manner, and the inner ends of the metal bars are inserted into the metal tube and connected with the resistance wire; insulating metal oxide fillers are filled between the inner wall of the metal tube and the outer wall of the metal rod and between the inner wall of the metal tube and the resistance wire; the metal rod comprises an external thread section, a polished rod section and an internal thread section, the polished rod section is sleeved with an insulating sleeve, and the insulating sleeve is inserted into the metal pipe; the outer insulator wraps the section, penetrating out of the metal pipe, of the polish rod section, and the outer insulator is locally embedded into the port of the metal pipe. The creepage distance provided by the insulating sleeve pre-embedded in the metal oxide filler can achieve a high-insulation effect; secondary insulation can be realized by the internally embedded insulating sleeve; the problem of insulation failure caused by gaps easily generated when the outer insulator is attached to the surfaces of the metal oxide filler and the metal tube is solved.

The utility model relates to the technical field of resistance wires, and discloses an anti-corrosion resistance wire which comprises a hexagonal spiral resistance wire, the hexagonal spiral resistance wire comprises a resistance wire body and a second protective coating, the second protective coating is located on the outer side of the resistance wire body, a first protective coating is arranged on the outer side of the second protective coating, and the first protective coating is located on the outer side of the first protective coating. The cross section of the resistance wire body is hexagonal, the protective coating I is a polytetrafluoroethylene coating or a fluororubber coating, the protective coating II is an epoxy resin coating, the hexagonal spiral resistance wire is adopted to adapt to different use scenes and installation requirements, and the resistance wire body has certain flexibility, so that the resistance wire can be used in different fields, and the service life of the resistance wire is prolonged. The hexagonal spiral resistance wire can be bent or deformed according to needs so as to be conveniently installed and used in equipment or containers of different shapes, and the hexagonal spiral resistance wire can continuously and stably work without faults caused by corrosion or material performance changes through the second protective coating and the first protective coating.

The utility model relates to a resistor body and a resistor, and relates to the technical field of resistors. The resistor body provided by the utility model comprises a plate-shaped core material which is of a rectangular plate-shaped structure wound with a resistance wire; the first connecting terminal is electrically connected with the starting end of the resistance wire; and a second connection terminal electrically connected to a terminal of the resistance wire. The plate-shaped core material has a pair of first protrusions and a pair of second protrusions at both ends in the longitudinal direction thereof, respectively. The resistance wire can form an effective acting point through the first protruding part and the second protruding part which are arranged on the plate-shaped core material, so that when the resistance wire is wound on the plate-shaped core material, the resistance wire can be wound in the mode that the first protruding part and the second protruding part are hung near the starting end and the terminal end of the resistance wire; therefore, the resistance wire is prevented from loosening, and it is guaranteed that the resistance wire is wound on the plate-shaped core material in a certain tension state.

The present application relates to the technical field of resistor, in particular to a kind of water-cooled resistance of photo-thermal agreement, including insulating and light-transmitting support tube, the outside of support tube is equipped with resistance strip, resistance strip can be red after energization and emit light, support tube is worn with inner water-cooled pipe, so that part of light of resistance strip is shot on the surface of inner water-cooled pipe towards inside;Support tube outside is covered with surrounding tube, annular space is enclosed between surrounding tube and support tube, and multiple outer water-cooled pipes are arranged in annular space, each outer water-cooled pipe is arranged along support tube axial direction, so that part of light of resistance strip is shot on the side of outer water-cooled pipe close to support tube;The inner wall of surrounding tube is provided with reflective layer, and gap is left between adjacent two outer water-cooled pipes, so that part of light of resistance strip is shot on the side of outer water-cooled pipe away from support tube via the gap and reflective layer. Utilize resistance strip heat and emit light, and the energy generated by resistance strip is taken away by light-thermal radiation and inner and outer water-cooled pipes.