345results about How to "Simple connection structure" patented technology

This invention relates to an electronic cigarette device, including an electronic cigarette and an electronic cigarette charger, the electronic cigarette charger forming a first magnetic portion, the electronic cigarette correspondingly forming a second magnetic portion mutually magnetically adsorbed with the first magnetic portion. The electronic cigarette charger forms a first connector, and the first connector comprises a first seat, a first electrode pole disposed at a middle portion of the first seat and a first insulating sleeve disposed between the first seat and the first electrode pole to insulate the first seat and the first electrode pole. The electronic cigarette forms an electronic cigarette battery therein, and the electronic cigarette at an end thereof forms a second connector connected with the electronic cigarette battery and the first connector of the electronic cigarette charger. The electronic cigarette device is convenient to put/take the electronic cigarette into/out of the electronic cigarette charger.

The invention relates to a modular administration appliance provided with a reusable base unit (100) comprising a drive device (140, 150) and a replaceable cartridge (200) that is detachably connectedto the base unit and comprises a product container (250). A rotary movement is transmitted between the base unit and the cartridge. To this end, the base unit comprises a driving element (160) whichcan be displaced in a rotary movement about a rotational axis by means of the drive device, and the cartridge comprises a rotatable transmission element (233) which is embodied in such a way that a rotation of the transmission element causes the ejection of the medicament to be administered. In a preferred form of embodiment, the transmission element at least partially surrounds the drive device.

A display apparatus according to one embodiment of the present invention is a display apparatus comprising a surface mount-type light-emitting device having an external terminal for surface mounting; a wiring substrate where the surface mount-type light-emitting device has been mounted; a lens unit disposed opposing the surface mount-type light-emitting device; and a frame body portion disposed surrounding the lens unit.

The invention provides a heat exchanger integrated assembly. The heat exchanger integrated assembly comprises a heat exchanger, an adaptation connecting device and an installation supporting frame used for fixing the integrated assembly, wherein one end of the adaptation connecting device is fixed to a matching part, and an outwards protruding third pipeline and an outwards protruding fourth pipeline are arranged at the other end of the adaptation connecting device; the installation supporting frame comprises an installation part bent at an included angle with the matching part, the installation part comprises at least two installation plates, at least one installation plate is located on the side, opposite to the side where the other installation plate is located, of the matching part, or the installation part comprises one installation plate and at least two connecting parts, and the gap between at least two adjacent connecting parts is larger than the gap between other adjacent connecting parts. Each installation plate is provided with a plurality of installation holes, and the installation holes are completely exposed outside the heat exchanger and the adaptation connecting device in the installation direction penetrating through the installation holes. The heat exchanger integrated assembly is simple in structure, good in refrigeration effect, high in stability of the installation supporting frame and high in vibration strength.

A display apparatus comprises a main body including a touch screen disposed on a front surface thereof; an accessory unit rotatably disposed with respect to the main body; a connecting rod disposed in a side surface of one of the main body and the accessory unit; and a connecting channel disposed in a side surface of the other of the accessory unit and the main body, the connecting channel being formed so that the connecting rod is inserted in or separated from the connecting channel in a lengthwise direction thereof.

In a vehicle air conditioner having front and rear air conditioning units, a refrigerant cycle includes front and rear evaporators for cooling air in a cooling mode, a hot-gas bypass passage through which hot-gas refrigerant discharged from a compressor flows into the front evaporator while bypassing a condenser in a heating mode, and a fixed throttle between the condenser and the front evaporator for decompressing refrigerant flowing from the condenser in the cooling mode. Further, a refrigerant outlet side of the fixed throttle and a refrigerant outlet side of the hot-gas bypass passage are joined to a refrigerant pipe, and a refrigerant outlet of the refrigerant pipe is connected to a refrigerant inlet of the front evaporator. Therefore, a refrigerant pipe structure of the refrigerant cycle can be made simple.

The invention discloses a master and slave control method based on a high-voltage big-power transducer, which is characterized by mainly comprising the following steps: N cascading high-voltage big-power transducers are connected to an optical fiber adapter plate connected with a master control system, and one high-voltage big-power transducer is appointed as master control driving, the rest is slave control driving, and N is greater than or equal to 2; the master control system is electrified, and the master control driving operates according to the given frequency f0; the master control system calculates the master voltage modulation wave form of the master control driving, and the master voltage modulation wave form is sent to the optical fiber adapter plate; the optical fiber adapter plate divides obtained master voltage modulation wave form into N-1 paths of completely same secondary voltage modulation wave forms and inputs the N-1 paths into the corresponding slave control driving. The invention fully utilizes the basic principle that a motor can be provided with completely same input voltage if two transducers input completely same PWM wave, thus effectively avoiding the requirement of high-speed precise transmission when a velocity sensor, a speed signal and a torque signal are used.

A smart battery pack and a method for recognizing the battery type using the same. The smart battery pack includes at least one battery cell coupled to an external set via positive and negative electrode terminals. A timer circuit is coupled to the external set via a data terminal and is adapted to apply a predetermined timer circuit signal for a period of time when a predetermined signal is applied from the external set. A first switch is controlled by the timer circuit and applies electric power from the battery cell, and a register outputs a predetermined register signal causing a smart battery controller to output battery type information to the external set. The smart battery pack has only one data line between the smart battery pack and the external set (and one data terminal on each) facilitating communication between the devices while maintaining a reduced manufacturing cost.

A liquid jetting apparatus includes a channel unit in which a liquid channel including a nozzle for jetting a liquid is formed, and a piezoelectric actuator provided on the channel unit and configured to apply jetting energy to the liquid inside the liquid channel. The piezoelectric actuator has a piezoelectric element and a wiring substrate in which a first electrode and a wire electrically connected to the first electrode are formed and which is joined to one surface of the piezoelectric element. The first electrode is configured to make contact with the piezoelectric element.

The invention discloses a prefabricated prestressed concrete frame beam-column joint making disparate use of high performance materials, comprising prefabricated concrete beams, prefabricated concrete columns, prefabricated beam-bottom prestressed tendons, common rebars, beam-top common rebars, in-column vertical rebars, sleeves, connecting rebars, and U-shaped rebars. Post-cast sections are reserved at two ends of the pre-fabricated beams, and the prestressed tendons fitted to the bottom of the prefabricated beams extend out of beam ends and are anchored to the beam-end post-cast sections, forming the prefabricated concrete beam-column joint with the prefabricated concrete beams and columns through post-cast concrete. In order to ensure the integrity of the beam-column joint, the beam-bottom common stressed rebars are connected with aseismic rebars through the sleeves and the U-shaped rebars are disposed in a joint post-cast area. In order to improve the energy dissipating capacity of the beam-column joint, the two ends of the prefabricated beams are made by casting high ultimate strain concrete. The invention reduces the production and construction difficulty, decreases the section height or steel usage of the prefabricated concrete beams and ensures the integrity and aseismic performance of the beam-column joint.

The invention discloses a prefabricated prestressed concrete frame beam column joint with a U-shaped steel bar and sleeves. The prefabricated prestressed concrete frame beam column joint mainly comprises a prefabricated concrete beam, a prefabricated concrete column, prefabricated beam-bottom prestressed steel bars, prefabricated beam-bottom ordinary stressed steel bars, beam-top ordinary stressed steel bars, longitudinal steel bars in the column, the U-shaped steel bar and aseismic steel bars and the connecting sleeves thereof; post-casting sections are reserved at the two ends of the prefabricated beam, and the prestressed steel bars assembled at the bottom of the prefabricated beam stretch out of the beam ends and are anchored to the post-casting sections reserved at the beam ends to form the prefabricated concrete frame beam column joint with the prefabricated beam column through post-casting concrete. The ordinary stressed steel bars stretching out from the bottom of the beam are connected with the aseismic steel bars through the sleeves, the U-shaped steel bar is arranged on the post-casting area of the joint, and therefore the integrality of the beam column joint is enhanced. Accordingly, the production and construction difficulty is reduced, the section height or the steel dosage of the prefabricated concrete beam is decreased, and the integrality and aseismic property of the beam column joint are guaranteed.

The invention relates to the electrician unkeep tool technical field, and specifically relates to a ground wire device with early warning and electricity testing functions; the ground wire device comprises a wiring frame clamp with one side opening, wherein the wiring frame clamp is formed by a top plate, a clamp plate, a side plate and a bottom plate; the clamp plate is connected with the side plate through a slide block and a slide groove, so corresponding surfaces of the top plate and the clamp plate can form a wire jaw; one end of a push-pull rod is connected with the clamp plate, and the other end penetrates the bottom plate and is placed in an insulation rod; the push-pull rod between the clamp plate and the bottom plate is provided with a pressure spring; the insulation rod is provided with an approach electric alarm and a hoop; an arc-shaped brake rod penetrates a brake rod slide groove on the insulation rod and is connected with the push-pull rod; two ends of the insulation rod are respectively connected with the bottom plate and a telescopic rod; the top of the wiring frame clamp is provided with a voice type high voltage electric tester and a wire foreign matter removing scissors; the side face of the wiring frame clamp is provided with a ground lead wire having a ground screw; the ground screw is provided with a foot pad. The ground wire device is high in safety, easy to control, and can greatly improve working efficiency of power working personnel.

The invention provides a cooking utensil, which comprises an inner container, a metal heating pipe, a halogen heating pipe and a hot air fan. The inner container has a cooking chamber with one end open. Two air outlets; the metal heating pipe is positioned at the outside of the inner tank; the halogen heating tube is positioned at the outside of the inner tank; the hot air fan includes a hot air motor and a hot fan blade connected with the output shaft of the hot air motor; The air is sucked to the metal heating tube through the air inlet, and after being heated by the metal heating tube, the air flows back to the cooking cavity through the first air outlet, and the light waves emitted by the halogen heating tube can enter the cooking cavity through the second air outlet. In the cooking utensil provided by the present invention, the hot air fan sucks the air in the cooking cavity to the metal heating tube, and the air flows back to the cooking cavity after being heated by the metal heating tube to realize the effect of hot air convection; the light waves emitted by the halogen heating tube heat the food Uniform and high heating efficiency.

An air passage switching device includes a film member for opening and closing an opening portion of an air passage, and the film member has a first end portion fixed to a peripheral portion of the opening portion and a second end portion fixed to a winding shaft. The winding shaft is capable of moving in a first direction separated from the first end portion of the film member and in a second direction approaching the first end portion of the first member while rotating. In the air passage switching device, an actuator for operating the winding shaft is disposed in an interior of the winding shaft and is fixed by a fixing member, the winding shaft is disposed rotatably relative to the fixing member, and the fixing member is moved in the first direction or the second direction together with the winding shaft by a guide unit.

The invention relates to a concrete vibrating rod. The concrete vibrating rod comprises a shell (1), the interior of the shell is divided into an upper chamber and a lower chamber through a bearing pedestal (4), the upper chamber is provided with a variable frequency controller (2) and an alternating current motor (3), an eccentric shaft (5) is connected with an output shaft of the alternating current motor, the lower chamber is sequentially provided with a silencing cover (6) and a bushing (8), and a sound sensor (10) connected with the variable frequency controller is arranged outside the shell. A connection portion arranged on the outer surface of the shell fixes a heating phase-change cover (14) to the outer surface of the shell. The heating phase-change cover is a sealed cavity filled with phase-change materials (19), an electric heating device (20) is arranged on the inner side of the outer wall (15) of the heating phase-change cover, a reflecting film (21) and a heat insulation layer (22) are sequentially arranged on the inner side of the inner wall (16) of the heating phase-change cover, and the outer surface of the outer wall of the heating phase-change cover is provided with a temperature sensor connected with a temperature control device of the electric heating device. The concrete vibrating rod is used for concrete pouring, can achieve vibration and heating of concrete, effectively saves energy, and reduces noise.

The invention provides a circuit breaker interlocking component which is arranged in the energy storage operating mechanism of a circuit breaker and comprises an interlocking guide rod, a closing guide rod and an energy storage indicating member. The energy storage operating mechanism of the circuit breaker comprises a control component which is connected with the interlocking component in a driving manner and a rotating shaft component which is used for driving closing and separating. The middle part of the interlocking guide rod is rotatably installed on the energy storage operating mechanism. One end of the interlocking guide rod is provided with a limiting part which is arranged to be corresponding to the rotating shaft component and the energy storage indicating member, and the other end of the interlocking guide rod is provided with a driving part which is connected with the closing guide rod in a contact manner. The rotating shaft component and the energy storage indicating member can be cooperated with the limiting part of the interlocking guide rod in the contact manner so that the interlocking guide rod is enabled to act on the closing guide rod. When the energy storage operating mechanism is in the separating energy storage state, the driving part of the interlocking guide rod does not limit the closing interlocking part of the closing guide rod. The circuit breaker interlocking component is accurate in installation, stable in cooperation and compact in structure.

The invention relates to a plate type prefabricated concrete comprehensive pipe gallery which is applied to urban municipal engineering. The plate type prefabricated concrete comprehensive pipe gallery is formed by assembling a prefabricated concrete bottom plate, prefabricated concrete side walls and a prefabricated concrete top plate together. The prefabricated concrete side walls and the prefabricated concrete bottom plate are connected through rigid connection joints. The prefabricated concrete side walls and the prefabricated concrete top plate are connected through semi-rigid connection joints which are convenient to construct. The comprehensive pipe gallery is fastened in the longitudinal direction through bolts or stretched in the longitudinal direction through prestressed tendons, so that reliable connection is achieved. Single-compartment or multi-compartment pipe galleys meeting different requirements can be assembled through different numbers of prefabricated concrete plates of different dimensions.

The invention discloses a magnetic levitation overspeed test bed for an impeller overspeed test. The magnetic levitation overspeed test bed comprises a support, a main machine, an electric control cabinet and a vacuum pump. The main machine, the electric control cabinet and the vacuum pump are installed on the support. The main machine comprises a motor shell, a motor rotor and a motor stator, wherein the motor rotor and the motor stator are installed in the motor shell. The upper tail end of the motor rotor extends out of the upper end face of the motor shell. The motor rotor is provided with an upper radial magnetic bearing, a lower radial magnetic bearing, an upper thrust magnetic bearing, a lower thrust magnetic bearing and a thrust disc. The upper tail end of the motor rotor is connected with a safety connector and a pull rod screw which are used for fixing an impeller to the upper end of the motor rotor. A protective cover is arranged at the position, around the impeller, of the motor shell. A protective cover lid is installed on the protective cover. The upper surface of the motor shell, the protective cover and the protective cover lid jointly form a closed contained wrapping the impeller. A buffer block is installed on the inner wall of the protective cover. A vacuumizing connector is formed on the protective cover lid. A vacuumizing pipe is installed on the vacuumizing connector. The other end of the vacuumizing pipe is connected to the vacuum pump.

The invention relates to the technical field of frequency converters, in particular to a seven-level inverter circuit and a control method thereof, a multi-phase inverter and a frequency converter. The seven-level inverter circuit comprises capacitors C1-C4 and power electronic switches S1-S12, wherein output of seven levels is realized through opening and closing of the power electronic switches. Compared with the seven-level inverter circuit in a related technology, the seven-level inverter circuit has the advantages that a small number of components are used, the components are normal and readily available and the connection structure is simple, so that the topological structure of the seven-level inverter circuit is simplified and the cost of the seven-level inverter circuit is reduced. Since the topological structure of the seven-level topological circuit is simplified in the embodiment of the invention, the cost of the seven-level inverter circuit is reduced; thus the topological structures of the multi-phase inverter and the frequency converter including a plurality of seven-level inverter circuits are simple and the cost is reduced.

The invention discloses an intelligent cabinet electromagnetic lock control method, comprising the steps that multiple lock control circuits are respectively connected one by one through a data line, a central control device sends orders to the lock control circuits through the data line; the lock control circuit sends the feedback information to the central control device though the data line. Correspondingly, the invention also provides an intelligent cabinet electromagnetic control system and intelligent cabinet. The intelligent cabinet electromagnetic lock control method enables the central control device and multiple lock control circuits to achieve a serial address setting and parallel information communication, the method based electromagnetic control system and intelligent cabinet to a large extent enables the simplification of the connection structure of the central control device and multiple lock control circuits, enables the simplification of equipment structure, has the effects of lowering cost, easy maintenance and repair, avoids the necessity of assigning professionals, results in lower maintenance and repair costs.

The invention is applicable to the field of Internet of Things, and provides an Internet of Things device and an Internet of Things system. The Internet of Things device comprises multiple execution mechanisms with different functions and an intelligent control mechanism for controlling the execution mechanism to run. As the intelligent control mechanism in the Internet of Things device can receive an instruction and control the multiple execution mechanisms with different functions to run, cost is reduced, and work efficiency of the Internet of Things device is improved; as a network is formed by a portal server and the connected Internet of Things device, the connecting structure of the Internet of Things system is simplified, and the networking efficiency of the Internet of Things system is improved; as a user can control the Internet of Things device through the portal server and a cloud server, and the portal server can work independently to maintain intelligent operation of the Internet of Things system when the network connection of the cloud server is interrupted, safe and reliable operation of the Internet of Things system is guaranteed, convenience is brought to the use of the user, generalization and application of the Internet of Things technology are facilitated, and integral development of the Internet of Things technology is finally facilitated.

The invention discloses an LED display screen which comprises a box body, a display module and a sealing ring. The display module is arranged on the box body, and the sealing ring is arranged between the box body and the display module. The surface of the box body is provided with an opening. The display module is electrically connected with a circuit board inside the box body through the opening. The display module comprises a module body and an installation base arranged on the back side of the module body. The installation base is used for installation of the sealing ring. The sealing ring surrounds the periphery of the opening and is arranged between the installation base and the surface on the periphery of the opening in an elastic extrusion mode so as to seal a gap formed between the back side of the module body and the surface on the periphery of the opening. The LED display screen is simple in waterproof structure and good in waterproof effect, and can achieve the waterproof level being IPx5.

The present invention disclooses a connecting structure of lightgage steel joist pair and its connecting method. It is characterized by that the connection between two joist bodies with groove has noconnecting component, but one end of one joist bodyis equipped with a tenon head, and on two side walls of said tenon head a fastening hook projected outward is set respectively, and on two side walls of one end of another joist a fastening groove is set respectively, said fastening grooves are matched with the above-mentioned fastening hooks. If the above-mentioned tenon head of one joist is inserted into the groove of another joist, and the fastening hjooks of one joist are fit into the fastening grooves of another joist, so that a new connection structure of them can be formed.

The invention discloses a separation-connection locking apparatus for a transmission shaft of a drawer holder base of a universal circuit breaker. The separation-connection locking apparatus comprises a transmission shaft I, a transmission shaft II, a separation-connection buckle I, a separation-connection buckle II, a pushing apparatus, a limiting part, an energy storage part and a reset apparatus, wherein the transmission shaft is used for driving a dragging plate to slide; the transmission shaft II is rotationally connected with the drawer holder; the separation-connection buckle I is in transmission connection with the transmission shaft I; the separation-connection buckle II is connected with the transmission shaft II and is driven by the transmission shaft II to rotate; the pushing apparatus is used for pushing the separation-connection buckle I or the separation-connection buckle II to move to enable the separation-connection buckle I and the separation-connection buckle II to be clamped so as to form transmission connection; the limiting part is used for locking the pushing apparatus under the action of the energy storage part to enable the clamping state of the separation-connection buckle I and the separation-connection buckle II to be stable; a rotation shaft is provided with a convex part I; when the circuit breaker body is in an operating position, the limiting part is pushed to remove the locking state of the pushing apparatus; and the reset apparatus enables the separation-connection buckle I and the separation-connection buckle II to be separated when the locking state of the pushing apparatus is removed. The separation-connection locking apparatus has the beneficial effects that the collisions of parts in the draw holder can be reduced, the service life can be prolonged and the precision can be improved.

The invention discloses a connection structure of lugs and a cover plate of a battery, which comprises the lugs and the cover plate, wherein the lugs are led out from the end of a battery coil core and are also provided with a lug lead-out device arranged at the end of the coil core; the lug lead-out device is provided with an insulation layer contacting the end of the coil core and a conductive layer far away from the end of the coil core; the lugs are electrically connected with the conductive layer; and the conductive layer is electrically connected with the cover plate. The connection structure also comprises a connecting piece and a second gasket stacked between the conductive layer of the lug lead-out device and the cover plate; and the connecting piece tightly compresses the lugs between the second gasket and the conductive layer of the lug lead-out device. The lugs are connected to the lug lead-out device and are mechanically compressed through the second gasket so as to ensurereliable connection of the lugs and the cover plate, reduce the inner resistance of the battery and ensure firm fixation of the coil core. The connection structure is simple in assembly process, is suitable for line production and is suitable for assembling the batteries of hybrid electric automobiles with multiple lugs and large volume and pure electric automobiles or is used for assembling large storage batteries.

The present invention relates to a pool bottom cleaner which comprises a pump body which is provided with a motor at the inside and an impeller connected with a motor output shaft, a cleaning head which is arranged under a water inlet of the pump body and is provided with a connecting part which is communicated with the water inlet of the pump body as well as a handspike component which is connected with the outer surface of the pump body and can push the cleaner to travel in water. The pool bottom cleaner is characterized by also comprising a pontoon which is connected between the pump body and the cleaning head; the pontoon is provided with an axle hole which can be communicated with the water inlet of the pump body and a water inlet opening of the cleaning head respectively; and the pontoon and the cleaning head are connected in a demountable way. As the pontoon is arranged at the head of the cleaner, the pontoon can contain floating material, is convenient for installation and can avoid polluting a pool; the pontoon reduces the weight of the cleaner in water and is lighter for the operator to use; the cleaning head is changeable and is connected in a convenient pressing buckle form; and the connection structure is simpler and is very convenient for operation.

The invention provides a container-type modular building unit and an assembly house. The container-type modular building unit comprises a main body frame and connecting pieces, wherein the main body frame comprises four vertical columns, each vertical column comprises a hollow special-shaped steel column, a column top plate connected to the top end of the corresponding special-shaped steel columnand a column bottom plate connected to the bottom end of the corresponding special-shaped steel column, each special-shaped steel column is formed by arranging an axially penetrating therethrough gapin one side edge of a square steel tube, each gap faces the inner side of the main body frame, and the column top plates and the column bottom plates are provided with transportation holes making theinner portions of the special-shaped steel columns communicated with the outer portions of the special-shaped steel columns respectively; connecting pieces are arranged in the special-shaped steel columns through the gaps and can be in inserted connection with the transportation holes in the column top plates or the column bottom plates, and the connecting pieces are provided with first perforations capable of making the inner portions of the special-shaped steel columns communicated with the outer portions of the special-shaped steel columns and allowing connecting bolts to penetrate through.The container-type modular building unit can be assembled into the house in a complete bolted connection mode, the connection structure is safe, and the disassembly and assembly are convenient.

The invention discloses an agricultural sprinkler irrigation device with convenient height adjustment, comprising a support frame, a rotating seat and a sprinkler head body, the support frame is fixed on the bottom of the sprinkler head body, and the support frame comprises three support legs, two sliding support legs and a sprinkler head body. An adjusting support leg, the support legs are evenly distributed on the bottom of the rotating base, the support leg is rotatably connected with the rotating base, the spray head body includes a spray head column, a spray head pipe and a nozzle, the spray head column and the spray head pipe are fixedly connected, The bottom end of the spray head column is provided with a rotating seat, the rotating seat is rotatably connected with the spray head column, the lower end of the spray head column is provided with a water pipe interface, and the top end of the spray head column is provided with a rotating handwheel, and the rotating handwheel is connected to the spray head column through threads. The nozzle column is connected in rotation, and a push rod is arranged under the rotating handwheel. By using the spiral telescopic rod, it is convenient to freely adjust the height of the support frame, and the adjustment is more convenient.

The invention provides a high-voltage circuit breaker. The circuit breaker comprises an A phase ceramic sleeve, a B phase ceramic sleeve, a C phase ceramic sleeve, a first connecting lever box, a second connecting lever box, a third connecting lever box and a transmission structure; the A phase ceramic sleeve, the B phase ceramic sleeve and the C phase ceramic sleeve are respectively connected with the transmission structure through the first connecting lever box, the second connecting lever box and the third connecting lever box. The high-voltage circuit breaker is simple in connection structure; the transmission structure with a driving motor is adopted only; compared with the traditional circuit breaker, the high-voltage circuit breaker has the advantages that the parts are greatly reduced, and the reliability is improved; an abutting flange and a medium flange of a three-phase high-voltage circuit breaker are saved, the length of a main transmission shaft is reduced, so that the rotational inertia of the whole transmission structure can be fully reduced, and as a result, the strict requirements on starting torque of the driving motor, acceleration and overload capacity can be decreased; the high-voltage circuit breaker of such structure can be applied to the actual engineering, and the model of the driving motor can be conveniently selected.

The invention discloses a hybrid device for realizing the soft switching characteristic of a Si IGBT (silicon insulated gate bipolar transistor). A silicon carbide metal-oxide-semiconductor field-effect transistor SiC MOSFET and a silicon insulated gate bipolar transistor Si IGBT are connected in series so as to form the hybrid device; current flows into the drain of the SiC MOSFET and flows out from the source of the SiC MOSFET; the source of the SiC MOSFET is connected with the collector of the Si IGBT, so that the current can flow into the Si IGBT, and flows out from the emitter of the Si IGBT; and in the operation process of the hybrid device, the soft switching characteristic of the Si IGBT can be realized through two different modulation methods according to actual circuit environments.