1671results about "Transformers/inductances casings" patented technology

The invention discloses a dry-type transformer. The dry-type transformer comprises a transformer body, a housing, a bottom plate and a fan, wherein the transformer body is formed by a plurality of groups of encapsulated windings in an array mode, a supporting rod is arranged at the bottom of the transformer body and allow the encapsulated windings in each group to connect with each other, the supporting rod is arranged in a crossed mode, and first threaded holes penetrate the supporting rod; the transformer body is integrally arranged in the cavity of the housing, and the bottom of the transformer body is fixedly positioned with the bottom plate, and meanwhile, the transformer body is arranged in the housing through the fan, the whole device achieves dispelling the heat in the transformerbody, and the graphite material of housing side is protruding simultaneously, and the heat from the housing is diffused quickly, and the protrusion of the array distribution can reduce the air great dust entering the inner wall of the housing through air vents.

The invention relates to the technical field of transformers, in particular to a power electronic transformer with a shielding structure, which mainly comprises a transformer body, a radiator is fixedly mounted on the side surface of the transformer body, a cooling fan is fixedly mounted at the end part of the radiator, and a weak current box is fixedly mounted at the end part of the transformer body. Double oil mist separation is achieved through the deoiler, one is that spiral ascending airflow is formed through guiding of the jet pipe, oil mist in gas is removed according to the centrifugal demisting principle, and the other is that residual oil mist in the gas is secondarily intercepted through the filter element pipe, so that the oil mist in respiratory airflow can be effectively removed, the oil mist interception efficiency is remarkably improved, and the oil mist separation efficiency is greatly improved. Meanwhile, the elastic membrane of the buffer can absorb sudden pressure change of the oil conservator through elastic deformation, so that the pressure fluctuation amplitude is reduced when the load changes suddenly, pulverization or structural damage of the drying agent caused by strong airflow impact is avoided, it is ensured that the moisture absorption drying agent is always in a clean and stable working environment, and the efficient dehumidification capacity is maintained.

The invention discloses a large-current inductor based on thermal actuation multidirectional sealing compensation, and particularly relates to the technical field of inductor parts, the large-current inductor comprises an inductor lower cover, an inductor upper cover, two sliding strips and a multidirectional compensation piece, and the inductor upper cover is arranged above the inductor lower cover; the two sliding strips slide on the inner wall of the inductor lower cover; and one side of each sliding strip is provided with a multidirectional compensation piece. Through the multidirectional compensation piece, the multidirectional compensation mechanism obviously enhances the adaptability of the joint of the inductor upper cover and the inductor lower cover to thermal deformation in different directions, so that the sealing compensation capability of the inductor under multidirectional thermal expansion and cold contraction is more excellent, and the sealing durability of the inductor shell is greatly improved; therefore, the problems that the sealing compensation capacity of the inductor is insufficient under multi-directional thermal expansion and cold contraction, and the sealing durability of the inductor shell is poor are solved.

The utility model provides a spring-free type bushing end screen, which belongs to the technical field of bushing end screens and comprises a flange seat, an insulating sealing sleeve is embedded in an inner cavity of the flange seat and is clamped in the inner cavity of the flange seat through a locking component, and a locking thread is arranged at the end part, far away from the flange seat, of a binding post along the outer wall. The inner wall of the side, away from the flange hole, of the flange base is in threaded connection with a grounding piece, the grounding piece is arranged outside the locking thread in a sleeving mode, anti-skid lines are arranged on the outer wall of the grounding piece in the circumferential direction, external threads are formed in the bottom of the outer wall of the grounding piece in the circumferential direction, internal threads are formed in the top of the inner wall of the flange base, and therefore the grounding piece is in threaded connection with the top of an inner cavity of the flange base. After the grounding piece is in threaded connection with the flange seat, the end screen is in a continuous grounding state, stable operation of the transformer is guaranteed under the condition that overall stability is guaranteed, and the protection effect is enhanced.

The invention discloses an internally-inserted water-cooled magnet device for a high-field hybrid magnet. The internally-inserted water-cooled magnet device comprises a container assembly and a magnet coil assembly arranged in the container assembly. The container assembly comprises an upper barrel assembly, a container end cover, a hydraulic machine assembly, a center pipe assembly, an inner supporting assembly, a middle barrel assembly, a lower barrel assembly and an electric connecting assembly. The hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

The invention discloses a novel internally-inserted water-cooled magnet container assembly for a hybrid magnet with high mechanical stability, which comprises an upper cylinder component, a container end cover, a hydraulic machine component, a central tube component, an inner support component, a middle cylinder component, a lower cylinder component, an electric connection component and a first conductive flexible connector, and a magnet coil assembly comprises a plurality of radially-sleeved coils; the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is increased, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, the dismounting and maintenance process of the mixed internally-inserted water-cooled magnet device is simple and rapid, and the efficiency is high. And the dismounting efficiency is improved.

The invention relates to a safety system for automatic pressure relief during an internal arc fault period of an alternating-current transformer bushing, and the system comprises the alternating-current transformer bushing which is used for accommodating an insulating medium; the first pressure relief structure is arranged between the alternating-current transformer bushing and the vacuum container and is used for communicating the alternating-current transformer bushing with the vacuum container under the condition that the internal pressure of the alternating-current transformer bushing exceeds a preset pressure threshold value; the optical signal detection device is arranged in the alternating-current transformer bushing, is in communication connection with the control device, and is used for detecting an optical signal, converting the optical signal into an electric signal and outputting the electric signal to the control device; the control device is in communication connection with the second pressure relief structure and is used for outputting a starting instruction to the second pressure relief structure under the condition that it is determined that the arc fault occurs according to the electric signal; and the second pressure relief structure is arranged on the middle flange and is used for communicating the alternating-current transformer bushing and the external space in response to the opening instruction. By adopting the system, early fault intervention and controllable pressure release can be realized.

The invention discloses an installation positioning device, a superconducting magnet system and a fusion reactor device, and belongs to the technical field of fusion reactor engineering. The mounting and positioning device comprises a back plate assembly and a clamping assembly, wherein the back plate assembly is used for connecting a coil main body of the superconducting magnet system; the clamping assembly comprises a first insulating part, two clamping parts and a plurality of adjusting parts, and the first insulating part forms a mounting cavity which is at least used for accommodating a coil joint of the superconducting magnet system; the first insulating part is arranged between the two clamping parts, and the clamping parts are connected with the back plate assembly; the multiple adjusting pieces are arranged outside the first insulating piece in a surrounding mode, and the adjusting pieces are connected with the two clamping pieces respectively and used for adjusting the clamping force between the two clamping pieces. The coil connector is positioned and fixed for multiple times through the back plate assembly and the clamping assembly, the mechanical stability and the electrical insulation performance of the coil connector are improved, and the disassembly, assembly and maintenance cost is reduced.

The present application relates to the technical field of intelligent transformer, and particularly relates to an intelligent transformer with intelligent protection function, which comprises a transformer shell, a winding core assembly, a monitoring and control assembly, the winding core assembly is arranged in the transformer shell, a movable seat is arranged at the top of the inner cavity of the transformer shell, an outer terminal is fixedly arranged at the lower end of the movable seat, a protection mechanism is arranged between the outer terminal and an inner terminal, a toothed plate which is slidably connected with the movable seat is fixedly arranged at the output shaft of an electric push rod, and a driving ring is meshingly connected with a threaded ring and the toothed plate. The intelligent transformer with intelligent protection function is meshingly connected with the threaded ring and the toothed plate, so that the outer terminal and the inner terminal can be separated, the sealing partition plate is transversely arranged between the outer terminal and the inner terminal, the effect of isolating the electric arc between the outer terminal and the inner terminal is achieved, the principle is clear, the structure is simple, and the assembly and maintenance difficulty of the device is reduced.

The utility model provides a transformer module which comprises a primary side assembly, a secondary side assembly and a magnetic element. The primary side assembly is provided with a first cover body, a first column body and a first coil. The first column body is connected to the first cover body. The first coil is wound on the first cylinder. The secondary side assembly is provided with a second cover body, a second column body and a second coil. The second column body is connected to the second cover body. The second coil is wound on the second cylinder. The magnetic element is arranged between the primary side assembly and the secondary side assembly. The first column body is fixedly connected to the second column body, and the size of the first column body is larger than that of the second column body.

The invention relates to the technical field of transformers, and discloses a noise reduction type intelligent large dry-type transformer which comprises a base, a sound insulation plate is fixedly connected to the left side of the base, a ventilation door is rotatably connected to the front portion of the sound insulation plate, a buffer spring is fixedly connected to the inner wall of the base, and a supporting frame is fixedly connected to the top of the buffer spring. A transformer body is arranged at the top of the supporting frame, a fixing plate is fixedly connected to the left side of a sound insulation plate, a chamfering plate is fixedly connected to the bottom of the fixing plate, a reciprocating lead screw is rotatably connected to the inner wall of the chamfering plate, and a U-shaped plate is in threaded connection with the circumferential surface of the reciprocating lead screw. And vibration generated in the operation process of the transformer body can be buffered, so that mechanical vibration generated in the operation process of the transformer body can be remarkably reduced, noise is reduced, and the comfort degree of the working environment is improved.

Inductor component (100) in SMD package for low-frequency magnetic fields, comprising a housing (102) with a housing base (104) for mounting on a printed circuit board, three windings arranged within the housing (102), in particular essentially orthogonal to each other, along an X, Y and Z winding axis, a plurality of connection contacts (110) arranged on the housing base (104), and a pin configuration with at least two electrical interconnections (130, 132) permanently manufactured within the housing (102), wherein each of the electrical interconnections (130, 132) electrically connects two specific terminal contacts (110) and the terminal contacts (110) are assigned to the winding ends of the X, Y and Z windings, so that each winding can be electrically connected via the terminal contacts (110).

The utility model belongs to the technical field of reactors, and particularly relates to an extra-high voltage shunt reactor oil tank composite noise reduction structure which comprises a rubber plate fixedly installed in an oil tank wall, the outer side of the rubber plate is attached to the surface of the inner side wall of the oil tank wall, and a sound absorption hole-free paperboard is fixedly installed on the inner side of the rubber plate. A double-layer composite perforated plate sound absorption mechanism is fixedly installed on the inner side of the sound absorption hole-free paperboard, gaps are reserved among the rubber plate, the sound absorption hole-free paperboard and the double-layer composite perforated plate sound absorption mechanism, and a gap is reserved between two layers of perforated plates of the double-layer composite perforated plate sound absorption mechanism. The double-layer composite perforated plate sound absorption mechanism comprises a first perforated paperboard and a second perforated paperboard. The composite noise attenuation structure composed of the rubber plate and the multiple layers of insulating paper plates is arranged on the inner side wall of the oil tank, vibration waves transmitted from insulating oil are blocked and weakened through material combination of different media, vibration noise can be reduced, and the composite noise attenuation oil tank is an important measure for solving the problem of noise of an electric reactor.

An oil-immersed transformer includes an oil tank, an oil conservator located above the oil tank, a pressure balancing system, and a cooling system. The cooling system includes a heat dissipation plate assembly, two positioning tubes, a first connecting tube, and a second connecting tube. The inner space of the oil conservator and the inner channels of the two positioning tubes are connected through the first and second connecting tubes. The heat dissipation plate assembly includes a first heat dissipation seat, a second heat dissipation seat, two guide rods, and several sealing rings. The second heat dissipation seat slides on the first heat dissipation seat. The guide rods are installed on the second heat dissipation seat and inserted into the positioning tubes. The sealing rings are installed on the guide rods and sandwiched between the guide rods and the positioning tubes. The guide rods can be moved and adjusted on the positioning tubes. During operation, the pressure balancing system adjusts its state according to the oil level in the oil conservator, thereby using the air pressure in the oil conservator to adjust the position of the second heat dissipation seat. This invention effectively extends the transformer's lifespan, has strong practicality, and has significant potential for widespread application.

Discussed is a wireless charging device which can change the direction of a magnetic field, generated in a transmission coil, through a vertically and horizontally rotatable repeater, and can hold a user terminal in parallel with the repeater, thereby transmitting wireless power in various directions and at various angles. The wireless charging device includes a case, a flat plate core disposed in the case, multiple transmission coils arranged parallel to each other on the flat plate core, a terminal holder including a repeater therein and disposed on the top surface of the case while sloping with respect to the top surface of the case, and a moving member for moving the terminal holder in the direction in which the plurality of transmission coils are arranged.

The invention provides a dry-type transformer shell convenient to assemble, and relates to the technical field of dry-type transformers, the dry-type transformer shell convenient to assemble comprises side plates, two quick clamping mechanisms are movably clamped at the two ends of each side plate, and one end of each quick clamping mechanism penetrates through the corresponding side plate to be connected with a quick locking mechanism; each rapid locking mechanism is movably clamped at one end of the top plate, the top plate is arranged between the two side plates, one end of one side plate is movably provided with a switch cabinet door through a hinge, the rapid clamping mechanisms are placed in first through holes formed in the side plates, at the moment, the rapid clamping mechanisms are pressed, and the switch cabinet door is movably installed on the top plate. At the moment, a rectangular clamping column penetrates through a rectangular groove and is clamped in a first clamping groove for clamping, after a rapid clamping mechanism is installed, one end of a rapid locking mechanism connected with the other end of the rapid clamping mechanism is clamped in a second clamping groove formed in a circular groove, and therefore rapid installation and disassembly are achieved.

The invention discloses an anti-large electromagnetic force torque water-cooled magnet fixing structure, which comprises an anti-rotation insulating plate, an anti-rotation metal cylinder, an anti-rotation metal threaded pin and an anti-rotation insulating sleeve, and is characterized in that the anti-rotation insulating plate is arranged between the anti-rotation metal cylinder and a corresponding electric connection plate, and one end, far away from the electric connection plate, of the anti-rotation metal cylinder is connected with a container assembly; the threaded section of the anti-rotation metal threaded pin is in threaded connection with the corresponding electric connection plate, and the other end of the anti-rotation metal threaded pin is sleeved with an anti-rotation insulation sleeve, penetrates through the anti-rotation insulation plate and then is inserted into the anti-rotation metal cylinder, so that the anti-rotation metal threaded pin is in insulation connection with the anti-rotation metal cylinder. The anti-rotation device has the advantages that the anti-rotation metal cylinder replaces an insulating anti-rotation piece structure made of an insulating composite material in the prior art, and the problem that a traditional structure is insufficient in strength is solved by exerting the high strength of metal of the anti-rotation metal cylinder, so that the electric connecting plate and the coil are prevented from being damaged; and the large electromagnetic force torque resistance of the water-cooled magnet fixing structure is improved.

Provided is a coil structure including an inductor coil having a self-bonding wire structure and including a central hole, a detection coil electromagnetically coupled to the inductor coil, a support unit surrounding at least a portion of an outer periphery of the inductor coil, and a housing including an upper magnetic body and a lower magnetic body facing each other in a vertical direction with the inductor coil therebetween to form an inner space in which the inductor coil and the detection coil are provided, the upper magnetic body and the lower magnetic body each including a protrusion inserted into the central hole of the inductor coil.

The utility model relates to the technical field of transformers, in particular to a moisture-proof transformer. Comprising a shell assembly, a ventilation assembly, a drying assembly and a mounting assembly, the shell assembly comprises an outer shell and a transformer body, the ventilation assembly comprises a ventilation box, a dustproof plate and a drying plate, the drying assembly comprises a cooling plate, the mounting assembly comprises a mounting bottom plate, and the outer wall of the cooling plate is connected with a heat insulation layer. The end, away from the cooling plate, of the heat insulation layer is connected with a heating piece, the top of the mounting bottom plate is connected with a side plate, and one end of the side plate is connected with a heating rod and a condensation plate. After the fan is started to run, air is filtered by the dustproof plate and then flows to the drying plates, then the air is treated by the two drying plates and then flows into the outer shell, moisture in the air is absorbed by drying the air flowing into the outer shell, and then the air heating effect of the heating rods and the heating pieces is improved.

This invention discloses an explosion-proof box-type transformer, relating to the field of marine fire alarm technology. It includes an explosion-proof outer shell, an explosion-proof inner shell, a heat dissipation duct, a transformer body, and a heat dissipation mechanism. The heat dissipation mechanism includes a first heat dissipation fin, a negative pressure fan, an air guide box, a filter box, a cooling box, and a filter housing. Through the heat dissipation mechanism, the explosion-proof outer shell, the explosion-proof inner shell, and the heat dissipation duct, in conjunction with the first heat dissipation fin, rapidly dissipate heat from the transformer body. The negative pressure fan, air guide box, filter box, cooling box, filter housing, cooling structure, and antistatic filter work together to filter and cool the gas. A rotating block, scraper, first rotating rod, first bevel gear structure, and first transmission rod clean impurities from the antistatic filter. A striking component, first rotating ring, connecting strip, reciprocating screw transmission structure, second bevel gear structure, first rotating gear, second rotating ring, and arc-shaped rack strike and clean the antistatic filter.

The invention discloses a double-winding electronic transformer for an off-grid inverter, and relates to the technical field of electronic transformers. A plurality of groups of fin plates are uniformly distributed on the outer side of a transformation shell in the circumferential direction to enhance heat dissipation, and internal thread seats are symmetrically arranged and are connected with an external bracket through fasteners; a bottom cover plate is arranged under the transformation shell to achieve sealing protection, the positioning mechanism comprises a threaded column body and two sets of nuts, the distance between the nuts is adjusted to be matched with the installation height, and the top end of the transformation shell is locked and fixed to an inverter installation face through self-locking of a thread pair. And the transformation mechanism is used for carrying out limiting support and overhead isolation on the primary winding and the secondary winding through the framework and the bottom bracket. A plurality of groups of fin plates are uniformly arranged on the outer surface of the transformer shell in the circumferential direction, and the passive heat dissipation efficiency is enhanced by expanding the heat dissipation surface area by virtue of the high heat conductivity coefficient characteristic of an aluminum alloy material; and the primary winding and the secondary winding are arranged in an overhead isolation manner through a bottom bracket in the shell.

The invention relates to a magnetic assembly, which comprises a magnetic core assembly and a magnetic core, the first magnetic column and the third magnetic column are oppositely arranged and located between the second magnetic column and the fourth magnetic column, and the second magnetic column and the fourth magnetic column are oppositely arranged; the first winding channel comprises a first part formed between the first magnetic column and the second magnetic column and a second part formed between the second magnetic column and the third magnetic column; the second winding channel comprises a first part formed between the first magnetic column and the fourth magnetic column and a second part formed between the third magnetic column and the fourth magnetic column; a part of the first winding is arranged in the first part of the first winding channel, and a part of the first winding is arranged in the second part of the second winding channel; and the second winding is partially arranged in the first part of the second winding channel and partially arranged in the second part of the first winding channel. The invention also relates to a power conversion module.

The utility model discloses a pin protection structure of a small electronic transformer, which comprises a protection plate, a plurality of pin protection cylinders and a self-adaptive clamping component, the protection plate is vertically provided with a plurality of pin protection cylinders in one-to-one correspondence with transformer pins, and the pin protection cylinders are arranged on the protection plate. The two opposite ends of the pin protective cylinder are provided with self-adaptive clamping assemblies capable of clamping transformer pins respectively. The problems that in the prior art, the thicknesses of pins on the high-voltage side and the low-voltage side of a transformer are different, due to the process problem, the thicknesses of the pins on the same side of the transformer are slightly different, the inner diameter of a pin protection cylinder in a comparison file cannot be changed according to the thicknesses of the pins, and therefore the pin protection cylinder cannot be tightly attached to the thin transformer pins, and the cost is reduced are solved. When the transformer falls, the mechanical clamping force can be weakened, pins are prone to deviation, breakage or deformation, and normal use of the transformer is directly affected. Therefore, the pin protection structure of the small electronic transformer can be tightly attached to the pins of the transformer.

The utility model relates to the technical field of transformers, in particular to a variable-frequency transformer structure which comprises a transformer body, one side of the transformer body is of an opening structure, a plurality of sets of transverse plates are fixedly connected to the opening, gaps are formed between the transverse plates, adjusting plates are symmetrically arranged in the gaps, and the adjusting plates are fixedly connected with the transformer body. An adjusting assembly is arranged outside the transformer main body, the adjusting assembly is used for driving the opposite adjusting plates to synchronously move towards or away from each other, when the heat dissipation speed of the transformer main body needs to be accelerated, only the adjusting assembly needs to be started to work, the adjusting assembly can enable the opposite adjusting plates to slide away from each other, and therefore the heat dissipation speed of the transformer main body can be increased. Therefore, gaps between the transverse plates can be opened, and heat dissipation in the transformer body is accelerated.

The invention discloses an adjustable waterproof shielding device for a transformer, and relates to the technical field of transformers. The adjustable waterproof shielding device comprises a guide plate, an adjusting mechanism and a limiting mechanism. The adjusting mechanism comprises a supporting seat, an adjusting rod and a driving block, the supporting seat is fixedly connected to the top frame, the adjusting rod comprises a moving part and a connecting part, the connecting part is fixedly connected with the flow guide plate through a fastening screw or in a welding mode, the moving part is in clearance fit with the supporting seat, and the driving block is in transmission connection with the connecting part; the limiting mechanism comprises a limiting piece and a guide groove, the guide groove is formed in the outer side wall of the supporting base and extends in the axial direction of the supporting base, and the limiting piece is arranged in the guide groove in a sliding fit mode and fixedly connected with the adjusting rod. According to the scheme, the driving block is far away from or close to the supporting seat, so that the adjusting rod moves towards or away from the top frame, the height of the guide plate is reduced or increased, the drainage path of the guide plate is adjusted, and the drainage efficiency is improved.

The application discloses a high-power water-cooled hollow inductor connecting system, and belongs to the technical field of heat dissipation and connection of power electronic devices. The system aims to solve the problems of low heat dissipation efficiency of traditional water-cooled inductors, complex installation and potential safety hazards caused by separation of water circuit and electric circuit connection. The technical scheme points of the system include: an inductor module made of a hollow metal pipe with a heat-conducting insulating coating on the inner wall, and a connector module matched with the inductor module; the connector module has a hollow center fluid needle and an insulating main body with a conductive elastic element, so that when the connecting interface of the inductor module is inserted, the sealing connection of the cooling liquid channel and the reliable contact of the electric circuit can be realized at the same time. The system is mainly used in high-power density power electronic devices such as new energy vehicles, industrial frequency converters and high-power power supplies, and can realize efficient heat dissipation, safe connection and convenient maintenance of the inductor.

The utility model discloses an anti-interference three-phase transformer energy-saving iron core, and relates to the technical field of transformer iron cores, the anti-interference three-phase transformer energy-saving iron core comprises a base and a vertical roll type iron core, the vertical roll type iron core comprises a roll type iron core body and an iron yoke, and the anti-interference three-phase transformer energy-saving iron core also comprises an outer shielding mechanism, an isolation shielding mechanism, a winding shielding mechanism and a grounding mechanism, the outer shielding mechanism comprises a shielding shell, and the shielding shell is provided with a wiring hole; the isolation shielding mechanism comprises an isolation plate; the winding shielding mechanism is arranged on the outer side of the roll-type iron core body and used for isolating the roll-type iron core body from the winding; according to the utility model, through the external shielding shell, the iron core can be completely wrapped, a closed shielding body is formed, the anti-electromagnetic interference capability of the iron core is improved, and through the movably inserted isolation plates, a plurality of iron core windings can be divided into different areas, so that the electromagnetic interference resistance of the iron core is improved. And the anti-interference capability is further improved.

The invention provides an inductor based on iron-based nanocrystalline powder and a preparation method of the inductor. The inductor is provided with an I-shaped main body, a coil and a wrapping part wrapping the I-shaped main body and the coil; wherein the I-shaped main body comprises a core column and a platform part which extends from the core column to two ends and is provided with a groove, the coil comprises a winding part which is wound on the core column and a fixing part which extends outwards from the winding part and is arranged in the groove, and the surface of the fixing part is flush with the surface of the platform part and is exposed; the I-shaped main body is a mixture of iron-based nanocrystalline powder and high-temperature organic silicon epoxy resin, the wrapping part is a mixture of magnetic powder and high-temperature organic silicon epoxy resin, specifically, the iron-based nanocrystalline powder is adopted as the material of the I-shaped main body, the I-shaped inductor has the advantages of being high in inductance value and low in loss, allowing larger current to pass through and being unsaturated and suitable for high-power scenes, and meanwhile, the high-power inductor has the advantages of being high in inductance value and low in loss. And a coating material adopts high-molecular-weight high-temperature organic silicon epoxy resin, so that the product strength is higher, and the production efficiency and the preparation yield are effectively improved.

The present disclosure provides a coil device having a simple structure and high heat dissipation. A coil device (1) includes a bobbin (2), a first winding portion disposed on an outer peripheral surface of the bobbin (2), a second winding portion (40) disposed directly or indirectly on an outer peripheral surface of the first winding portion, a first core (5a) and a second core (6a) attached to the bobbin (2), a housing (8) housing at least the bobbin (2), and a resin filled in the housing (8). The first core (5a) has a first base portion (50) and a pair of first outer leg portions (51) protruding from the first base portion (50) and facing each other in a first direction perpendicular to the axial direction of the bobbin (2). The second core (6a) has a second base portion (60) and a pair of second outer leg portions (61) protruding from the second base portion (60) and facing each other in the first direction. In a second direction perpendicular to the axial direction of the bobbin (2) and the first direction, the first outer leg part (51) and the second outer leg part (61) are separated so that a gap (12) is formed between the first outer leg part (51) and the second outer leg part (61).