4361results about How to "Improve cooling effect" patented technology

The invention provides an automobile balance block die-casting mould, which comprises a push cylinder, an upper mould base, an upper mould, a lower mould and a lower mould base, wherein the upper mould is arranged on the lower end of the upper mould base; the lower mould is arranged on the upper end of the lower mould base; the upper mould base is connected to the upper end of the lower mould base through a guide pillar; cooling holes are formed in the upper end face and the lower end face of the upper mould base in a penetrating way; a guide sleeve is connected onto each cooling hole. According to the automobile balance block die-casting mould, each cooling channel is communicated with a blind hole, each blind hole is communicated with a cooling hole, and each guide sleeve is arranged on the corresponding cooling hole, so that the mould can be cooled conveniently and quickly through injecting cooling water in the guide sleeves; the cooling channels are arranged at equal distances and in parallel, so that cooling is uniform, the cooling effect can be further improved, and the product quality is improved; the automobile balance block die-casting mould is simple in structure, convenient to operate, and good in cooling effect.

The invention relates to a cooling structure for an ultraprecise linear motor and belongs to the technical field of linear motors. The cooling structure solves the problem of proneness to heat exchange with environment caused by high side temperature of two-side surface-mounted cooling structures of existing linear motors. The cooling structure comprises a winding supporting portion, a winding and a heat conductive portion, wherein the winding is fixed on the surface of the winding supporting portion, the heat conductive portion is arranged on the surface on the outer side and fixedly connected with the winding supporting portion, the heat conductive portion is a copper foil ring which fits the outer profile of the winding and is sleeved and fixed on the surface on the outer side of the winding, or the heat conductive portion is a copper foil heat conductive ring formed by arraying multiple copper foil sections in a dispersed manner, the copper coil heat conductive ring fits the outer profile of the winding, and each copper coil section is fixed on the surface on the outer side of the winding. The cooling structure for the ultraprecise linear motor is suitable for cooling of linear motors.

The utility model discloses a casing of a motor, the motor and rotating equipment, and relates to the technical field of motors. The casing of the motor disclosed by the utility model is provided with at least two layers of cooling flow channels distributed along the radial direction of the casing, and the adjacent cooling flow channels are communicated with each other and are used for conveying the same cooling medium in the at least two layers of cooling flow channels; each cooling flow channel comprises a plurality of sub-flow channels which are communicated with one another, and in any cooling flow channel, at least part of the sub-flow channels and the sub-flow channels of the adjacent cooling flow channel are arranged in a one-to-one correspondence mode in the radial direction of the machine shell. The scheme at least can improve the cooling performance of the motor.

The utility model discloses a heat treatment furnace which comprises a base and a furnace body, the furnace body is fixedly installed at the top of the base, a clamping assembly is fixedly installed at the top of the base and comprises a fixing frame and a threaded rod, the fixing frame is fixedly installed at the top of the base, and the threaded rod is connected to one side of the fixing frame through threads. One end of the threaded rod is connected with a movable frame through a bearing, a sliding rod is fixedly installed on one side of the movable frame, the side wall of the sliding rod is sleeved with a spring, a first clamping plate and a second clamping plate are slidably connected to the side wall of the sliding rod, a stop rod is fixedly installed at the top of the fixed frame, and a round rod is fixedly installed on one side of the movable frame and slidably connected with the fixed frame. According to the heat treatment furnace, through the arranged clamping assembly, iron-nickel alloy can be clamped, meanwhile, the iron-nickel alloy can be conveniently stretched into the furnace body for heat treatment, the iron-nickel alloy can be conveniently taken out after heat treatment, the iron-nickel alloy can be automatically loosened after being taken out, use is more convenient, and the use effect can be improved accordingly.

The invention relates to a wheel device, a vehicle having the wheel device and a method of controlling the wheel device. The wheel device comprises a wheel body, a cover element and a transmission assembly. The wheel body is provided with a plurality of spokes which are arranged at intervals at a preset angle, and a through opening through which air can pass is formed between every two adjacent spokes; the cover element can cover the side face of the wheel body in a rotating mode relative to the wheel body around the rotating axis of the wheel body and is provided with at least one hole opening area. A transmission assembly is disposed between the wheel body and the shroud element and is configured to rotate the shroud element relative to the wheel body about a rotational axis of the wheel body when a rotational speed of the wheel body is greater than a predetermined threshold, therefore, the through opening of the wheel body is converted from an open state in which the through opening overlaps with the orifice area to a blocked state in which the through opening does not overlap with the orifice area. The invention has the advantages of reducing air resistance, increasing endurance mileage or fuel efficiency, and improving cooling performance, braking performance and appearance design.

The invention provides an electronic device, a ceramic substrate and a preparation method thereof, and relates to the technical field of semiconductors. The ceramic substrate comprises a ceramic base body and a liquid channel layer, the liquid channel layer is arranged in the ceramic base body, the liquid channel layer and the ceramic base body are integrally sintered and formed, the liquid channel layer comprises a liquid channel, the liquid channel is used for containing a cooling medium, and the liquid channel extends in the ceramic base body along a three-dimensional space path. The preparation method of the ceramic substrate comprises the following steps: preparing slurry containing ceramic powder, preparing a sacrificial template matched with a target liquid channel in shape, pouring the slurry to coat the sacrificial template, filling a mold with the slurry to obtain a ceramic blank, removing the sacrificial template to form a hollow channel in the ceramic blank, and sintering to form the ceramic substrate with the liquid channel. The electronic device comprises the ceramic substrate, a component and a liquid cooling circulation system.

The utility model provides a water cooling device on an air compressor. Relates to the field of air compressors. The water cooling device on the air compressor comprises an original cooling fan fixedly installed on an oil way of the air compressor, an air collecting cover and a water cooling base, the air collecting cover and the water cooling base are arranged on the cooling fan, the air collecting cover is fixedly installed at the air outlet end of the cooling fan, and the side, close to the cooling fan, of the air collecting cover is of an opening structure. The water cooling base is fixedly installed on the outer wall of the side, away from the cooling fan, of the air collecting cover, an air channel is formed in one side of the water cooling base, an annular water cavity is formed in the water cooling base, and cooling liquid is stored in the annular water cavity. The water cooling device on the air compressor has the advantages that the time for cooling air exhausted by the cooling fan can be prolonged, the air can be cooled more effectively, more heat in the air can be absorbed, and the cooling effect on an oil way of the air compressor is improved.

The utility model relates to the technical field of BMS signal acquisition wire harnesses, in particular to a new energy automobile BMS signal acquisition flame-retardant wire harness structure which comprises a BMS signal acquisition wire harness and a wire harness flame-retardant structure body, a flame-retardant corrugated pipe is arranged on the wire harness flame-retardant structure body, and hard end pipes are integrally arranged at the two ends of the flame-retardant corrugated pipe respectively. A first cable positioning seat and a second cable positioning seat which are clamped with each other are further arranged on the wire harness flame-retardant structure main body, and the first cable positioning seat is formed by rotationally connecting two symmetrical structures. The new energy automobile BMS signal acquisition flame-retardant wire harness structure can reliably fix the part, between the connectors, of the wire harness, the flame-retardant corrugated pipe is adopted for external overall protection, meanwhile, the center protection hose with the heat conduction function is arranged on the inner side of the flame-retardant corrugated pipe, cooling protection treatment can be assisted for the wire harness, and the service life of the wire harness is prolonged. Mutual interference among the wire harnesses is effectively avoided, and the flame-retardant effect is improved.

The invention discloses a fuel cell bipolar plate structure with a heat dissipation fin array, and particularly relates to the field of cell bipolar plates, the fuel cell bipolar plate structure comprises a cathode plate, an anode plate is arranged on one side of the cathode plate, a membrane electrode is arranged between the cathode plate and the anode plate, an air gas cavity is arranged on the surface of one side, close to the membrane electrode, of the cathode plate, and the heat dissipation fin array is arranged in the air gas cavity. An air flow channel is formed in the inner wall of the air gas cavity, a hydrogen gas cavity is formed in the inner wall of one side of the anode plate, a hydrogen flow channel is formed in the inner wall of the hydrogen gas cavity, a cooling water flow channel is formed between the cathode plate and the anode plate, and a reinforced heat dissipation mechanism is arranged in the cooling water flow channel; the flow channel can be shortened through the flow dividing air flow channel, the path of gas from the inlet to the outlet is more average, the multi-gradient auxiliary enhanced heat dissipation effect is achieved through the enhanced heat dissipation mechanism on the inner wall of the cooling water flow channel, the enhanced heat dissipation effect can be assisted, and therefore huge heat generated by electrochemical reaction of the cathode and the anode can be taken away.

The utility model discloses a novel hollow bone taking drill, handle end, handle end side fixed connection's bone taking end, bone taking end outer extension end fixed connection's working end: working end, including bone taking end side fixed connection's cutting ring, the drill bit mouth of cutting ring bottom end setting, four groups of side edges that cutting ring outer wall has set up, are used for draining cooling water to working end, can be through the spiral side edge and the recess that set up in working end side wall, drain cooling water high efficiency to entire cutting surface, improve the heat dissipation effect significantly, avoid the burn of tissue, simultaneously, side edge auxiliary end blade mouth carries out cutting, has greatly promoted the cutting efficiency, the annular step of bone taking end internal cavity setting, forms the slight gap after the bone column enters, effectively avoids the vacuum adsorption, makes the bone column be taken out easily and completely, thereby realized safe, efficient, convenient bone taking operation.

The application provides a stacked system module and a welding method thereof. The system module comprises a first substrate, a carrier plate and a second substrate stacked in sequence along a first direction. The first substrate comprises a first surface and a second surface arranged oppositely, and the second surface is provided with a first pad. The second substrate comprises a third surface and a fourth surface arranged oppositely, wherein the third surface faces the second surface, and the third surface is provided with a second pad. The carrier plate comprises an opening and a connecting piece, wherein, along the first direction, projections of the first pad and the second pad are both located at the periphery of the projection of the opening, and the connecting piece is used for electrically connecting part of the first pad and part of the second pad through the connecting piece. The system module is beneficial to reducing the warping of the system module, reducing the failure rate of welding the first substrate and the second substrate on the carrier plate, facilitating heat dissipation of the first substrate and the second substrate, and improving the space utilization of the system module.

The utility model discloses a new energy automobile battery embedded hardware structure relates to new energy automobile battery technical field, including battery box, battery management module, battery package and wire hole, the inside installation of battery box is used for the battery management module who manages and monitors battery package, the battery package is installed in the inside of battery box, and the battery package is electric connection between battery management module. This new energy automobile battery embedded hardware structure can pull the direction of the connecting plate to the direction of the fixed block, when the connecting plate moves, can drive the locating block to compress the first spring, when the bottom of locating block moves to the inside of fixed block, can place the heat dissipation fan main part on the supporting plate, can carry out the protection to battery management module top through insulating plate to prevent the condition of electric shock that battery management module top is touched by the person mistake in the process of testing battery management module, improves the safety of battery management module when testing.

This invention relates to a power semiconductor module assembly, comprising an insulating substrate, an AC power region, a DC positive power region, and a DC negative power region; a first copper-clad layer region is formed in the DC positive power region and a first chip module is disposed thereon; a third copper-clad layer region is formed in the AC power region, and a second chip module is disposed thereon; the power semiconductor module assembly of this invention, through the regular polygonal chip arrangement, enables most of the heat loss of the chips to be diffused and transferred through the interconnect copper layer on the substrate, significantly reducing the thermal coupling link area between chips, which can increase the current density to meet higher power requirements. Compared with conventional structures, under the same chip power loss, its heat dissipation path is better and the heat concentration effect is less likely to occur.

This invention relates to the field of concrete process temperature control technology, and discloses a method and system for continuous regulation of the concrete steam curing process based on temperature gradient feedback. The method includes: constructing a steam curing temperature time-series dataset; reconstructing the temperature field inside the steam curing kiln; compensating for ambient temperature on the original temperature measurement data of the component surface; forming a steam regulating valve opening control sequence; and performing online parameter correction. Compared to existing technologies that directly use the component surface temperature measurement value as the steam valve regulation feedback, this invention addresses the technical problem of failing to obtain an effective surface temperature gradient reflecting the component's hydration heat release state, especially under conditions of uneven steam injection and localized heat dissipation differences within the steam curing kiln. This application improves the accuracy of temperature gradient feedback control during the concrete steam curing process by reconstructing the temperature field inside the steam curing kiln and incorporating the estimated ambient temperature at the component surface measurement points into the surface temperature compensation and differential gradient calculation process.

The present application relates to the technical field of fan, and provides an evaporative fan, which comprises a rear shell, a front shell, a side shell, a fan wheel and a water curtain. The evaporative fan provided by the present application forms an air flow flowing into an air inlet, passing through the water curtain into an air duct cavity and being sent out from an air outlet when the fan wheel rotates forward. A plurality of air guide ribs are arranged on the front shell at intervals. The protruding height of the air guide ribs towards the fan wheel increases along the air flow direction in sequence. The air flow first impacts on the air guide rib with the smallest protruding height, part of the air flow is blown out from the air outlet, and the other part of the air flow impacts on the adjacent air guide ribs in sequence. The protruding height can block part of the air flow, so that the part of the air flow can be guided to blow out to the external environment from the air outlet, avoiding returning to the air duct cavity, so that the air volume of the evaporative fan sent out of the fan front shell by the fan wheel is more uniform, the cooling effect is greatly improved, the air flow interference is small, the noise is greatly reduced, and the comfort of use is improved.

This utility model discloses a partition plate for an outdoor unit of an air conditioner, including a main body with a water-guiding slope. The water-guiding slope is connected to an extension, and the extension is equipped with a heat dissipation structure. When the outdoor unit is operating, the condenser produces condensate. The fan rotation may throw the condensate towards the compressor compartment. The partition plate can block the water droplets, the water-guiding slope can cover the compressor, and the water droplets collected at the upper part of the partition plate are guided to the bottom of the casing. The heat dissipation structure can dissipate heat from the compressor compartment to the condenser compartment, preventing heat from the compressor compartment from being trapped and affecting the heat exchange performance of the outdoor unit. This outdoor unit's partition plate, by setting a water-guiding slope to cover the compressor and guide the water droplets adhering to it, and by setting an extension above the water-guiding slope to provide a heat dissipation structure, not only dissipates heat from the compressor compartment but also prevents water droplets from entering the compressor compartment through the heat dissipation structure, achieving both heat dissipation and waterproofing.

The present application relates to the technical field of conductive trolley, in particular to a lifting type graphitization inner string furnace conductive trolley, which comprises a liftable frame, and further comprises a sliding mechanism, a sliding support part and a compensation mechanism, the compensation mechanism is provided with at least two, and two are arranged oppositely, one end of the compensation mechanism is connected with the sliding mechanism, and the other end is connected with a pressure regulating part. The liftable frame is arranged, so that the conductive trolley can be flexibly adjusted according to the actual height of the furnace head electrode, precise butt joint with electrodes of different heights can be completed without the help of external lifting equipment, and the convenience and adaptability of furnace charging and furnace discharging operation are improved. Through the cooperation of the pressure regulating part and the compensation mechanism, the spring pre-tightening force can be adjusted online, the push plate is driven to move and extrude the spring, the spring increases the pre-tightening force, so that the compensation mechanism can always provide stable and reliable compensation effect for the electrode, and the stability and reliability of electrode conduction are ensured.

The utility model discloses an automatic circulation oven which comprises a supporting seat, a feeding chain and an oven body, the feeding chain rotates at the top end of the supporting seat in a circulation mode, the oven body is fixed at the top end of the supporting seat, the interior of the oven body is divided into a baking cavity and a cooling cavity through a partition plate, and a plurality of heating devices are arranged in the baking cavity. The side wall of the box body is provided with a feeding port communicating with the baking cavity and a discharging port communicating with the cooling cavity, material moving devices are arranged on the outer side of the feeding port and the outer side of the discharging port correspondingly, and a communicating door communicating with the baking cavity and the cooling cavity is arranged in the partition plate. And the feeding chain comprises a chain which circularly enters and exits the box body through the feed port and the discharge port, a motor for driving the chain and a tray arranged at the top end of the chain. The drying and cooling device is compact in structure, automatically completes drying and cooling of materials, improves working efficiency and improves working environment.

The utility model discloses a patch type super capacitor relates to capacitor technical field, including capacitor main part, the both sides of capacitor main part are provided with the welding leg, the inside of welding leg is provided with first welding hole, the bottom of welding leg is provided with the second welding hole with first welding hole intercommunication, the bottom of capacitor main part is provided with copper seat, the bottom of copper seat is provided with inner inclined slot, a plurality of inner extension holes are set up in the inside of inner inclined slot on copper seat and be provided with, the both sides of copper seat are provided with and the inner extension hole intercommunication of filling wind hole. The plurality of inner extension holes that set up in the inside of inner inclined slot on copper seat are used for the transmission of heat on capacitor main part, when the device and traditional capacitor installation environment's equivalent condition, if the installation environment has the situation of wind flow, the setting of inner extension hole can make the heat dissipation promotion effect of capacitor main part, and the both sides of copper seat are provided with and the inner extension hole intercommunication of filling wind hole is used for the circulation of capacitor main body surrounding environment.

The invention belongs to the technical field of grinding wheel abrasives, and particularly relates to a diamond porous microsphere, a grinding wheel abrasive and a preparation method and application thereof. The preparation raw materials of the diamond porous microspheres comprise mixed powder, a binder and water, the mixed powder comprises a first ceramic bond, diamond and a pore forming agent. The first ceramic bond, the diamond and the pore forming agent are used as raw materials for preparing the diamond porous microspheres, the diamond porous microspheres have natural pores and prefabricated spherical pores, the porosity is high, and the self-sharpening performance of the grinding wheel grinding material can be improved; the grinding wheel abrasive material is prepared through secondary air degreasing sintering of the diamond porous microspheres, a new three-dimensional pore structure is formed among the naturally stacked diamond porous microspheres, the grinding wheel abrasive material with a'natural pore + prefabricated spherical pore + stacked pore 'multi-stage pore structure is obtained, the cooling, lubricating and chip removal effects of a grinding wheel can be greatly improved, and the service life of the grinding wheel is prolonged. Therefore, the grinding performance and the service life of the grinding wheel are improved.

The utility model provides a kind of automatic flushing's implant tooth drill, it is related to dental technology field, including implant mobile phone, the inside one end of implant mobile phone is equipped with motor, the lower end of implant mobile phone and the side close to motor swing through installation is equipped with transmission shaft, the upper end of transmission shaft is connected with the output end of motor, and it is equipped with flushing mechanism between transmission shaft and implant mobile phone.The utility model in the present application is equipped with flushing mechanism, without additional medical staff hand-held hose flushing operation, let outside implant machine pass through liquid inlet pipe and send flushing liquid to temporary storage tank, then it is directly sprayed in the contact area between drill head and gum from spray head by liquid discharge pipe, the synchronization automation of drilling and flushing is realized, manpower input is reduced, and the stability problem caused by hand-held hose is avoided, ensure that water flow can accurately, continuously act on target area, effectively guarantee the definition of surgical field, improve the overall stability of implant processing process.

A compact alternative low-voltage switchgear includes a front enclosure and a rear enclosure connected to the rear of the front enclosure. The front enclosure contains an incoming line compartment, a metering compartment, a secondary wiring compartment, and a circuit breaker mounting compartment. The incoming line compartment and the metering compartment are vertically aligned and interconnected. The secondary wiring compartment is located beside the incoming line compartment and the metering compartment, and a first partition is provided between the secondary wiring compartment and the incoming line compartment and the metering compartment. The circuit breaker mounting compartment is located below the metering compartment and the secondary wiring compartment, and a second partition is provided between the circuit breaker mounting compartment and the metering compartment and the secondary wiring compartment. Ventilation holes are provided on both the second partition and the first partition. The rear enclosure contains a capacitor bank switch compartment and a capacitor mounting compartment, located vertically and vertically respectively. This invention provides a compact alternative low-voltage switchgear with high space utilization, a reasonable layout, and good heat dissipation and maintenance convenience.

This utility model relates to the field of chemical cooling technology, and provides a production device for cooling chemical mixtures, including a reaction vessel. A cooling chamber is provided on the outside of the reaction vessel, and a cooling pipe is provided inside the cooling chamber. The cooling pipe is wound around the outer wall of the reaction vessel. A stirring mechanism is provided inside the reaction vessel. Heat dissipation mechanisms are provided on both sides of the cooling chamber on the outside of the reaction vessel. By providing a stirring mechanism and a heat dissipation mechanism, this utility model can provide forced air cooling for the cooling pipe and cooling medium, accelerating the diffusion of heat to the environment. While improving the cooling effect, only one drive motor is needed to drive the stirring blades and the cooling fan at the same time, reducing the number of power devices, simplifying the equipment structure, and reducing energy consumption and maintenance costs.

A vehicle heat pump system capable of improving cooling and heating performance by applying a gas injection device selectively operated in a vehicle interior air conditioning mode to increase the flow rate of refrigerant. The heat pump system uses a single heat exchanger configured to exchange heat between at least two refrigerants having different temperatures and states with each other for the entire system and the gas injection device, so that the total number of components can be reduced, and manufacturing costs and weight can also be reduced.

The application discloses a micro fan and electronic equipment, and relates to the fan technical field, the micro fan includes a shell assembly, a vibration plate assembly and a driving device. The vibration plate assembly divides the shell assembly into a front cavity and a rear cavity, the vibration plate assembly includes a vibrating plate with one end fixed and one end suspended, the shell assembly includes an air inlet and an air outlet which are communicated with the front cavity and the outside, and the air inlet and the air outlet form a front cavity air duct; the driving device is arranged in the rear cavity and includes a permanent magnet magnetic circuit assembly, a coil and an armature, the permanent magnet magnetic circuit assembly and the coil are fixed relative to the shell assembly, the armature includes a moving piece arranged in the coil and the permanent magnet magnetic circuit assembly, the moving piece and the vibrating plate are connected through a connecting rod, and the coil is used for driving the moving piece to vibrate; the micro fan is compact in structure, small in size, high in driving efficiency, and capable of achieving good heat dissipation effect.

A semiconductor relay (100) is provided with a light-emitting element (10), a light-receiving element (20), first and second switching elements (31, 32), first and second die pads (51, 52), first and second terminals (41, 42), and a package (60) that accommodates the first and second terminals therein. The light receiving element (20) is located below the light emitting element (10) and between the first switching element (31) and the second switching element (32). One ends of the first and second terminals (41, 42) are connected to the first and second chip pads (51, 52), respectively, and the other ends are exposed outside the package (60). In a plan view, at least parts of the first and second chip pads (51, 52) overlap the first and second switching elements (31, 32), respectively.

An external rotor of a permanent magnet frequency conversion generator relates to the technical field of generator equipment, and improves heat dissipation in a rotor shell and reduces difficulty of rotation driving of the rotor by improving a rotor connecting sleeve and a rotor shell driving structure. According to the scheme, the rotor comprises a rotor shell, permanent magnets are arranged on the periphery of the inner wall of the rotor shell, and a connecting sleeve assembly is arranged at one end of the rotor shell; the connecting sleeve assembly comprises a bottom plate, the edge of the bottom plate is connected with the rotor shell, and a sleeve is arranged in the middle of the bottom plate; a first mounting hole is formed in the middle of the sleeve, a plurality of hollow holes are formed in the circumferential direction of the middle of the connecting bottom plate, and the side, away from the rotor shell, of the bottom plate is used for mounting a heat dissipation device; and a driving gear ring is arranged at the other end of the rotor shell.

The application discloses a gas turbine, a gas turbine blade and a leaf-shaped film cooling hole structure of the gas turbine blade. The existing traditional cylindrical film cooling hole is reshaped into a leaf-shaped structure including a left half circular arc, a right upper half elliptical arc, a right middle half elliptical arc and a right lower half elliptical arc, so that the cooling gas can be divided into three paths when being sprayed out of the hole, and is sprayed out along the passage secondary flow same direction, the film hole center line direction and the passage secondary flow opposite direction respectively, thereby the blowing-off effect of the passage secondary flow on the cooling film is inhibited, the wall-attaching ability and the along-flow development ability of the cooling film are enhanced, the covering uniformity of the cooling film on the base surface is improved, and the cooling efficiency and the service life of the blade are improved. The leaf-shaped film cooling hole structure has the characteristics of strong functionality and wide applicability, and can be widely applied to the cooling technical field of the gas turbine blade of an aero-engine or a ground gas turbine.

The application discloses a controlled current source system applied to temperature regulation, which comprises a signal processing and TEC temperature control board, an input EMC processing and rectification filtering part, an H-bridge power conversion part, an inductor and transformer part, an output rectification filtering part, a heating and refrigeration reversing part, a voltage and current sampling part and a low-voltage power supply part. After three-phase alternating current is subjected to input EMC processing and rectification filtering, direct current voltage is formed and is added to the H-bridge power conversion circuit. The H-bridge circuit is driven by a PWM wave with a set duty ratio, and is output to the inductor and transformer power part. The transformer is output to the rectification filtering circuit, expected current output is generated, the size of the current is automatically adjusted according to the result of the control link, and the current output direction is adjusted through the heating and refrigeration reversing circuit, so that the bidirectional switching of refrigeration and heating is realized. The application is based on the electrical layout of EMC, heat dissipation and optimal function link, and can realize smaller volume, stronger output, higher precision and higher intelligence.