91results about How to "Fast conduction" patented technology

The present application provides a diaphragm-free lithium ion battery. The battery comprises a positive electrode current collector, a positive electrode active material, a solid electrolyte, a solvent, a negative electrode active material, and a negative electrode current collector. The solid electrolyte is a solid porous organic polymer, which contains specific functional groups, including weakly coordinated anion groups, and the corresponding cation of the anion group is lithium ion. The porous polymer is a solid powder, which can act as a barrier between the positive electrode active material and the negative electrode active material, eliminating the need for a diaphragm and greatly improving the safety performance of the battery.

The utility model discloses a split type heat dissipation device of an electromagnetic valve, which relates to the technical field of heat dissipation devices and comprises two combined type heat dissipation frames which are symmetrically arranged, and the inner wall of each combined type heat dissipation frame is provided with a coating cavity matched with the outer contour of the electromagnetic valve. A plurality of heat dissipation fins are evenly distributed on the outer surface of each combined type heat dissipation frame, the two combined type heat dissipation frames are detachably connected, and a flexible heat conduction pad is arranged in a wrapping cavity of each combined type heat dissipation frame in an attached mode. The combined heat dissipation frame is easier to install and maintain and higher in use flexibility, the wrapping cavity can be matched with the outer contour of the electromagnetic valve, the flexible heat conduction pad is matched, the wrapping cavity can be tightly attached to the valve body, the heat conduction efficiency is improved, heat is rapidly conducted, and therefore the heat dissipation effect can be improved.

The utility model relates to a liftable tool jig, which belongs to the technical field of welding and comprises a welding jig base, two threaded C-shaped fixing clamps, a welding jig upper cover and a radiating module, the welding jig upper cover and the radiating module are arranged on the threaded C-shaped fixing clamps, and the number of the threaded C-shaped fixing clamps is two. The welding jig base comprises a welding base body, a lifting sliding block is embedded in the bottom side of the welding base body, a lifting positioning pin for fixing the lifting sliding block is detachably installed on the bottom side of the welding jig base body, and a fixing screw fixed to the welding jig base body is arranged in the lifting positioning pin. And a mounting groove for mounting the heat dissipation module and the welding jig upper cover is formed in the welding base. According to the liftable tool jig, the lifting device is additionally arranged in the base of the tool jig, when a copper sheet is placed, the positioning base descends, the periphery of the positioning retaining wall becomes high, and the position of the thin copper sheet is effectively limited.

This invention relates to the field of solid-state battery technology, and particularly to a composite solid-state electrolyte material, its preparation method, and its application. The composite solid-state electrolyte material contains a crystalline phase substance with the general chemical formula: B%A a RE b X 1 c D g +C%A d M e X 2 f D h Where A represents charge carriers; RE represents rare earth elements; M represents metallic elements; X represents... 1 X 2 D is a halide anion; A is an anion doping element or group; a RE b X 1 c D g and A d M e X 2 f D h It is a crystalline phase substance; B% is A a RE b X 1 c D g The mass fraction of the composite solid electrolyte material; C% is A d M e X 2 f D h The mass fraction of the composite solid electrolyte material is defined as follows: 0 ≤ a ≤ 3, 0 < b ≤ 1, 0.5 < c ≤ 12, 0 < d ≤ 5, 0 < e ≤ 2, 1 < f ≤ 20, 0 ≤ g ≤ 4, 0 ≤ h ≤ 5; 85 < B + C < 98, 10% < B% ≤ 85%; 10% < C% ≤ 85%, 0.2 ≤ C / B ≤ 10. The composite solid electrolyte material of this invention includes crystalline and amorphous phase components, giving it high ionic conductivity. The use of moisture-resistant non-metallic halide components instead of traditional halides and oxyhalides in the raw materials also provides it with good air stability.

The utility model relates to back adhesive technology field discloses the heat dissipation type breathable back adhesive, including polyester film, the polyester film top is provided with the heat conducting filler layer, is provided with the adhesive layer one between heat conducting filler layer with polyester film, heat conducting filler layer top is provided with graphite sheet, graphite sheet top is provided with the breathable microporous structure layer, the breathable microporous structure layer top is provided with adhesive layer two, heat conducting filler layer inside includes graphite sheet and boron nitride powder, graphite sheet with boron nitride powder is pasted together. In the utility model, through the high heat conduction performance of graphite sheet and boron nitride powder, the heat is conducted fast, and the intercommunication micropore of breathable microporous structure layer lets the air circulation and carries away the heat, and the heat dissipation problem is solved efficiently. The adhesive layer guarantees the close connection of each layer, maintains the stable overall structure, finally makes the object of being pasted stable operation under the suitable temperature, guarantees the normal use of relevant equipment or product.

This invention provides a film that combines thermal conductivity, thermal insulation, and electromagnetic shielding. It includes a high thermal conductivity film, a phase change film, and a thermally insulating electromagnetic shielding film. The high thermal conductivity film and the thermally insulating electromagnetic shielding film are respectively disposed on both sides of the phase change film. The thickness of the high thermal conductivity film is 0.01–0.5 mm; the thickness of the phase change film is 0.1–1 mm; and the thickness of the thermally insulating electromagnetic shielding film is 0.05–1.5 mm. This invention, combining thermal conductivity, thermal insulation, and electromagnetic shielding, can effectively solve the problem of poor heat dissipation in electronic devices such as mobile phones under high load, while reducing the impact of electromagnetic radiation on users. The product is lighter, thinner, and more flexible; the entire film product can be completely folded without material breakage.

This invention provides a cooling circulation device for a wind turbine nacelle, comprising a nacelle, with a cooling circulation mechanism installed on the upper part of the nacelle. The cooling circulation mechanism includes an upper cover and a lower cover; the upper and lower covers are fixedly connected to each other, and the bottom opening of the lower cover communicates with the upper part of the nacelle; a circulation pump is fixedly installed inside the upper cover, with the output end of the circulation pump connected to a first circulation pipe and the input end connected to a second circulation pipe. This invention constructs a closed cooling circuit on the top of the nacelle, consisting of a circulation pump, circulation pipes, and upper and lower double-layered serpentine coils, enabling the coolant to circulate continuously within the nacelle and perform large-area heat exchange, achieving uniform absorption and rapid conduction of heat from the nacelle; the upper and lower serpentine coils are stacked, expanding the effective heat dissipation area, allowing the device to maintain stable heat dissipation efficiency even during high-load power generation, thereby ensuring the long-term reliable operation of the power generation system.

The utility model discloses a heat conduction pipe provided with a heat dissipation core, and belongs to the technical field of heat conduction and heat dissipation. The heat conduction pipe provided with the heat dissipation core comprises a pipe body, a plurality of heat dissipation fins are arranged on the outer side of the pipe body, connecting pipes are installed at the two ends of the heat dissipation fins and the two ends of the pipe body, and connecting discs are installed on the outer sides of the connecting pipes. The heat dissipation mechanism comprises a center shaft, a heat dissipation core is installed on the outer side of the center shaft and is of a spiral structure, the outer side of the heat dissipation core is fixedly connected with the inner side of the pipe body, the multiple heat dissipation fins are distributed at equal intervals and are in a wave shape, the heat dissipation fins and the pipe body are integrally formed, and multiple flow guide holes are formed in the surface of the heat dissipation core; according to the utility model, the contact area and the retention time of a heat transfer medium and the heat dissipation core can be effectively increased, the transfer efficiency of heat in the pipe body is greatly improved, and the heat dissipation pipe has higher practical value.

The utility model belongs to the field of microwave devices, and particularly relates to an integrated microwave source device. Comprising a shell, a microwave power supply and a microwave generator, the microwave power supply comprises a high-voltage power supply, the high-voltage power supply comprises an input rectifier module, an inverter module, a transformer module and an output rectifier module which are sequentially connected in series, and the microwave generator comprises a magnetron; a middle partition plate is arranged in the shell, the interior of the shell is arranged in a double-layer mode through the middle partition plate, a first water-air heat exchanger and a fan are arranged on the two sides of the magnetron correspondingly, and a first ventilation opening and a second ventilation opening are formed in the two ends of the middle partition plate correspondingly; and the shell upper layer, the first ventilation opening, the shell lower layer and the second ventilation opening form a circulating air duct. The utility model provides an integrated microwave source device, and aims to solve the problem of poor heat dissipation capability of an integrated microwave source device in the prior art.

The utility model discloses a kind of heating disc and the liquid heater applied to it, it is related to heating disc technical field, comprising have: stainless steel contact layer, the stainless steel contact layer is used to directly contact with liquid, realize the heating conduction of liquid;Stainless steel base layer, the stainless steel base layer is used to bear thick film circuit or heating element, realize heat generation and conduction;Aluminum alloy soldering layer, the aluminum alloy soldering layer is between stainless steel contact layer and stainless steel base layer, for the welding of auxiliary stainless steel contact layer and stainless steel base layer;Stainless steel contact layer and stainless steel base layer of using S316 or S304 material, collocation porous aluminum alloy soldering layer, avoid heating disc surface rust, corrosion, prolong the service life of heating disc, while enhanced the overall structural stability of heating disc, and effectively improve heating efficiency, shorten the time of liquid heating.

The application relates to the field of high-speed communication and information network technology, in particular to a space expandable photoelectric information processing device, which comprises a device body, the device body comprises a power board module, an information processing board module, an interface board module, an expansion information processing module and a processing board heat dissipation top cover, a shielding block is arranged in the interface frame, and the device body comprises the processing board heat dissipation top cover. The application can not only improve the complex processing technology, overcome the deficiencies of the existing technology in the aspects of efficiency, cost, precision, material utilization rate, environmental protection and the like, improve the modularization and expandability of the system, improve the photoelectric data processing capacity, realize high integration and small and light design, help improve the heat dissipation performance and environmental adaptability of the device, and help unify the information processing of multiple types of photoelectric loads.

The utility model discloses a kind of multi-cavity injection molding components for motor heat dissipation, including motor component one and motor component two, and the outer surface of motor component one and motor component two is equipped with heat dissipation fin assembly. The utility model distributes multiple ventilation chambers in motor component one and motor component two, and three-dimensional heat dissipation path is formed by multi-cavity design, avoids heat concentration by partition design, increases heat dissipation area, motor component one and motor component two are integrally injection molded using carbon fiber composite material, reduce production cost and reduce weight, the positioning boss set ensures close contact with motor, accelerates heat dissipation, the heat conduction plate set on the outside of motor component one and motor component two penetrates ventilation chamber, can quickly conduct the heat of motor heat source to each cavity, avoid local overheating, and the heat dissipation fin set increases surface area to improve heat dissipation efficiency.

The utility model discloses a waterproof dustproof grade high's projection lamp, including lamp body shell, heat dissipation fin and glass fixed shell, the heat dissipation fin sets up at the outside of lamp body shell, the top fixed mounting of lamp body shell has the installation outer thread cylinder, the inner wall of glass fixed shell is equipped with internal thread groove, the glass fixed shell is screwed in the outside of installation outer thread cylinder, be provided with the light transmission glass panel between installation outer thread cylinder and glass fixed shell, the utility model relates to projection lamp technical field, waterproof dustproof grade high's projection lamp, through multiple sealing structure design, has effectively promoted waterproof dustproof grade. In the connecting portion of lamp body shell and glass fixed shell, set up annular sealing groove and first sealing washer, set up glass panel sealing washer simultaneously in the upper and lower two sides outer edge of light transmission glass panel, formed multiple sealing defense line, can effectively block rainwater and dust and invade the lamp body inside from this part.

The utility model provides a top sealed type semiconductor refrigerator, which relates to the technical field of semiconductor thermoelectric refrigeration, and comprises a radiating fin, a refrigeration sheet and an evaporation sheet, the top of the radiating fin is provided with a groove, the bottom of the evaporation sheet is provided with a base, the bottom of the base is provided with a fitting groove, and the refrigeration sheet is arranged in the groove and is positioned in the fitting groove; the grooves are matched with the attaching grooves, the grooves in the tops of the cooling fins are used in cooperation with the attaching grooves in the bottoms of the evaporation fins, the contact area between the refrigeration fins and the cooling fins and the contact area between the refrigeration fins and the evaporation fins are increased, heat resistance is reduced, and heat transfer efficiency is improved; the refrigeration sheet, the cooling sheet and the evaporation sheet are bonded through heat conduction silicone grease glue, interface gaps are filled with the silicone grease glue with the high heat conduction coefficient, it is ensured that heat is rapidly conducted to the cooling sheet, cold energy is efficiently transferred to the evaporation sheet, and the overall energy efficiency is improved.

The utility model discloses a composite lock catch geothermal floor which comprises a floor body, a heat conduction plate is fixedly embedded in the bottom of the floor body, a fixing frame located above the heat conduction plate is fixedly installed in the floor body, and a plurality of partition plates are integrally arranged in the fixing frame. Heat conducting rubber is filled between the adjacent partition plates, a mounting through hole is formed in the middle of the heat conducting rubber, a telescopic sleeve located in the mounting through hole is integrally arranged at the top of the heat conducting plate, and a telescopic column is slidably connected to the top of the telescopic sleeve in a penetrating mode; a heat dissipation plate located at the top of the heat conduction rubber is fixedly installed at the top of the telescopic column, and a jacking spring is arranged at the bottom of the telescopic column. Heat is conducted into air through the top of the floor body through the heat dissipation plate, the heat is rapidly conducted to the upper surface of the geothermal floor, and the geothermal floor has the advantages of being short in heat conduction path, rapid in heating and high in heat efficiency.

This application relates to the field of energy storage materials technology, and more particularly to a titanium-based active material, its preparation method, and its application. The titanium-based active material comprises a mixed oxide having a layered perovskite structure, the mixed oxide having the general chemical formula shown in Formula 1, M... 2± a La x‑y M1 y B n‑z M2 Z O (3n+1)‑δ Q δ Formula 1; in Formula 1, the M site includes H and / or an alkali metal element; the M1 site includes at least one of Mg, Ca, Sr, Ba, and rare earth elements; the M2 site includes a specified transition element and at least one of Al, Ga, In, Si, Sn, Sb, and Bi; the Q site includes at least one of F, Cl, Br, I, N, and S; the B site satisfies: Nb 2n‑3x‑z Ti 3x‑n Or Nb 2n‑3x Ti 3x‑n‑z This titanium-based active material possesses high energy density, ultra-fast charging capability, long cycle life, and intrinsic safety.

The utility model discloses a kind of high-temperature-resistant easy-to-tear double-sided tapes, it is related to the technical field of double-sided tape, including double-sided tape strip, glass fiber net, silica gel pad and corrugated copper sheet, the outside of double-sided tape strip is symmetrically provided with release paper layer, one side of a group release paper layer is bonded with adhesive layer one, the other group release paper layer is bonded with adhesive layer two on one side, the outside of adhesive layer one is provided with bonding mechanism, the structural strength of adhesive layer one is increased by glass fiber net arranged on outside of bonding mechanism, avoid adhesive layer one and crack, damage due to excessive stress, the buffer mechanism is arranged below adhesive layer one, the buffer mechanism is buffered and radiated by silica gel pad and multiple corrugated copper sheets. As the structural support assembly of buffer mechanism, the corrugated structure of multiple corrugated copper sheets not only enhances the overall rigidity of mechanism, but also can share part of impact force by deformation, cooperate silica gel pad to further improve buffering effect.

This invention discloses a heated tobacco cooling unit with enhanced thermal conductivity and a heated tobacco product, comprising a carrier sheet, several metal foils, and several phase change cooling materials. The carrier sheet has several perforated holes. Several metal foils are disposed on at least one side of the carrier sheet and cover the perforated holes. The metal foils are spaced apart and discretely arranged. The phase change cooling materials are filled within the perforated holes using the metal foils as a carrier. The carrier sheet containing the metal foils and phase change cooling materials is formed into the heated tobacco cooling unit by at least one of the following methods: winding, folding, gathering, bending, and pleating. The metal foils are regularly and intermittently distributed along the longitudinal direction of the tobacco strip. The cooling unit has multiple longitudinally extending channels, and the porosity of the cross-section is 40%-90%. The heated tobacco cooling unit with enhanced thermal conductivity of this invention has the advantages of high latent heat of phase change, low thermal hysteresis effect, high heat absorption efficiency, apparent stability without collapse, and no leakage.

This invention provides a cooling device for a wind turbine gearbox, comprising a wind turbine gearbox; a housing and a cooling tank are respectively arranged on both sides of the gearbox; a heat exchanger is fixedly installed on one side of the housing, one end of the heat exchanger is fixedly connected to a first cooling pipe, the other end of the first cooling pipe is fixedly connected to a delivery pump, and the input end of the delivery pump is fixedly connected to a second cooling pipe. This invention, by setting up a housing and a cooling tank on both sides of the wind turbine gearbox and fixing a heat exchanger on one side of the housing, forms a closed-loop coolant circulation, achieving rapid heat conduction and uniform heat dissipation inside the wind turbine gearbox. The coolant circulates through the first, second, and third cooling pipes and the cooling tank, carrying the gearbox heat to the cooling tank and releasing it to the outside air through the heat exchanger, effectively reducing the gearbox temperature and improving the operational stability of the equipment.

The utility model discloses a natural gas fuel cell device, the anode plate, proton exchange membrane and cathode plate are set gradually along material direction in battery main part, the cooling tank is located at the bottom of battery main part, the inside of cooling tank is provided with heat exchange pipe, the side of battery main part is close to the cathode plate and has the oxidant inlet pipe, the preheating box is placed in the outside of battery main part, the spiral pipe way is provided in the preheating box, one end of spiral pipe way is located in the outside of preheating box, one end of spiral pipe way extends to battery main part and is contacted with anode plate, the lateral wall of preheating box has the water inlet pipe and return pipe, the input end of heat exchange pipe is linked with return pipe, the output end of heat exchange pipe is linked with water inlet pipe, the utility model utilizes the waste heat energy of battery main part and preheats natural gas, reduces the demand of system to external energy, reduces energy consumption, avoids the heat pollution caused by direct waste heat emission simultaneously.

The invention discloses a high-breathability, cool-feeling and smooth bamboo and linen yarn fabric and application thereof in clothes, belongs to the technical field of textiles, and aims to solve the problems that the breathability is reduced, the hand feeling is hardened and the adhesive force of a coating is weak due to the fact that most of traditional coating modes adopt overall uniform coating, and pores of the fabric are prone to being blocked. The fabric is of a composite structure mainly comprising bamboo fibers and hemp fibers, the ratio of the hemp fibers is smaller than or equal to 10%, the surfaces of the inner side and the outer side of the fabric are each coated with a functional coating, the functional coatings are arranged in a hexagonal or rhombic grid or honeycomb shape, and the inner side portions of the functional coatings are connected with the surfaces of the fabric in a bonding mode. The bamboo fiber and hemp fiber blended structure is adopted, the hexagonal, rhombic or honeycomb discontinuous grid coating is matched, hole blocking of the coating is avoided, the air permeability of the fabric is greatly improved, meanwhile, the cool feeling component rapidly conducts heat, and continuous contact cool feeling is achieved.

The application discloses a manufacturing method of a high-heat-dissipation-efficiency pouring type driving transformer, and belongs to the technical field of power electronic equipment manufacturing. The method aims to solve the technical problems of low heat dissipation efficiency and insufficient long-term reliability of the existing driving transformer caused by the limited heat conduction performance of the pouring material, the simple surface heat dissipation structure and the difficult coordination of internal thermal stress. The method comprises the following steps: constructing a three-dimensional digital model of a reinforced heat dissipation structure with a boss array and a groove array and preparing a corresponding forming die; positioning a magnetic core and a winding as an insert in a die cavity; pouring insulating colloid with different mechanical and heat conduction properties in batches in a vacuum environment; through a segmented curing process, the flexible colloid is fully filled in the internal gap and buffers the stress, and at the same time, the high-heat-conduction rigid colloid forms an external main body and a heat dissipation structure, thereby forming an integrated pouring body. The method is used for manufacturing the driving transformer suitable for high-power-density and high-heat-dissipation scenes, and can significantly improve the heat dissipation capacity and operation reliability of the driving transformer.

The invention discloses a multi-layer aluminum core copper-clad plate adopting a plasma oxidation-copper plating process and also discloses a preparation method of the copper-clad plate, and the preparation method comprises the following steps: carrying out plasma anodic oxidation and copper plating treatment on the surface of an aluminum substrate to obtain a copper-clad plasma anodic aluminum oxide substrate; manufacturing an inner-layer circuit pattern on the surface of the copper-clad plasma anodic aluminum oxide substrate, then overlapping the inner-layer circuit pattern with a copper foil and a prepreg, and carrying out vacuum hot-pressing curing to obtain a multi-layer plate blank embedded with an aluminum core; through holes are formed in the multi-layer plate blank, activation and copper plating treatment are carried out, and interlayer electrical interconnection is achieved; and manufacturing an outer-layer circuit pattern on the surface of the multi-layer plate blank, preparing a solder mask layer on the surface of the circuit, and carrying out nickel plating and gold leaching surface treatment to obtain the multi-layer aluminum core copper-clad plate. According to the method, the problems of weak interlayer binding force, low heat dissipation efficiency, insufficient electrical interconnection reliability and the like of the aluminum core multilayer board are solved, and the prepared copper-clad plate can meet the use requirements of high-frequency and high-power electronic equipment.

The utility model discloses a high-speed motorized spindle liquid cooling device for an optical curve grinding machine, which relates to the technical field of grinding machine spindles and comprises a shell base, an output shaft is rotatably arranged in the shell base, a rotor coil is connected outside the output shaft, and a stator coil is arranged outside the rotor coil. The end part of the shell base is connected with a liquid-cooled shell, the inner surface is coated with a heat-conducting coating, and the stator coil is mounted in the heat-conducting coating and is in contact with the coating. And the other end of the liquid-cooled shell is blocked by an end cover and is provided with a sealing rubber ring, so that the leakage of cooling liquid is prevented. A liquid cooling cavity is reserved inside and is communicated with an external liquid supply and return pipe through a liquid inlet connector and a liquid outlet connector, and it is ensured that cooling liquid circularly flows to take away heat. And the shaft barrel and the end cover are jointly provided with a lead channel, so that an electrifying lead extends to the electrifying end of the stator coil. Through cooperation of liquid cooling circulation and the heat conduction coating, efficient heat dissipation is achieved, stable operation of the spindle is guaranteed, and the machining precision and efficiency of the grinding machine are improved.

This utility model discloses an electric heating tube capable of rapid heating, comprising a mounting plate, a fixing plate below the mounting plate, and an electric heating tube body mounted on the lower end of the fixing plate. The electric heating tube body contains two heat-conducting inner liners and two spiral heating wires, the lower ends of which are fixed together by bent heating wires. The outer wall of the electric heating tube body has multiple outer cylinders, each with an inner cylinder fixedly connected to its inner wall. Each inner cylinder has a heat sink fixedly connected to its outer wall. An mounting block is fixedly connected to the upper end of the fixing plate. The device incorporates a guide rod, a sliding plate, and a spring, among other structures. The electric heating tube is installed and fixed by engaging the limiting block into a limiting groove. This method allows for convenient and simple assembly and disassembly of the electric heating tube without the need for external tools.

The utility model relates to an ultrathin flexible silica gel heat-conducting gasket which comprises a silica gel heat-conducting gasket body, a first protective film is arranged at the top of the silica gel heat-conducting gasket body, a second protective film is arranged at the bottom of the silica gel heat-conducting gasket body, and hand tearing blocks are arranged at one end of the first protective film and one end of the second protective film. The main body of the silica gel heat-conducting gasket is formed by compositing a plurality of layers of structures, the contact layer has high heat conductivity and can quickly conduct heat and achieve efficient heat dissipation, the heat-conducting layer can accelerate transverse heat conduction, and the micropores and the protrusions on the heat dissipation enhancement layer can promote air circulation and prevent heat from being accumulated on the surface. The contact area with external air or heat dissipation media is increased, heat can be dissipated to the surrounding environment more quickly, and the heat dissipation speed is increased.

The utility model provides a robot motor housing with a heat dissipation structure, and relates to the technical field of robot motor housings, the robot motor housing comprises a front housing, the outer walls of the two sides of the front housing are both provided with heat dissipation grooves, the outer walls of the two sides of the front housing are both provided with two connecting grooves, the outer wall of the upper end of the front housing is fixedly connected with heat dissipation fins, and the heat dissipation fins are fixedly connected with the heat dissipation grooves. A plurality of circulation grooves are formed in the heat dissipation fins, an internal element is movably connected to one side of the inner wall of the front shell, the outer walls of the two sides of the internal element are each connected with a heat conduction piece, a rear cover is movably connected to the sides, away from the front shell, of the heat conduction pieces, and four plug pins are movably connected to the outer wall of one side of the rear cover; the side, close to the front shell, of the internal element is connected with a driving rod. According to the utility model, the problems of equipment failure and short service life caused by poor heat dissipation due to insufficient heat dissipation channel design, material heat conductivity and heat conduction efficiency of the existing robot motor shell are solved.

The utility model relates to the technical field of light-emitting diode (LED) lighting, and discloses a surface-mounted LED lamp bead substrate heat dissipation mechanism which comprises a stepped metal substrate, heat dissipation fin sets are evenly and fixedly installed at the lower end of the side wall of the stepped metal substrate, and the stepped metal substrate comprises an aluminum alloy heat dissipation base body. The side wall of the aluminum alloy heat dissipation base body is fixedly connected with the outer wall of the heat dissipation fin set, the top of the aluminum alloy heat dissipation base body is evenly provided with step boss assemblies, the top of each step boss assembly is fixedly provided with an insulating layer, and the top of each insulating layer is fixedly provided with a copper circuit layer. The heat dissipation area is increased, the heat dissipation efficiency is effectively improved, the heat accumulation problem is avoided, stable operation of the high-power-density LED is ensured, meanwhile, due to the design of the stepped metal substrate, the heat dissipation fin sets can be attached more tightly, interface thermal resistance is reduced, and the heat dissipation performance is further improved.

This invention provides a ceramic heating element, comprising a porous substrate and multiple thermally conductive layers disposed within the porous substrate. The multiple thermally conductive layers are stacked vertically within the porous substrate, and each thermally conductive layer comprises multiple aluminum nitride microspheres, with the aluminum nitride microspheres in adjacent layers in contact with each other. The ceramic heating element provided by this invention has high thermal conductivity and good oil and gas conduction effects, improving temperature uniformity and atomization efficiency, thereby enhancing the atomization effect. This invention also provides a method for preparing the ceramic heating element and an electronic cigarette atomizer.

The invention relates to the technical field of hygienic products, and particularly discloses a special sanitary towel for a puerpera based on a phase-change material and a preparation method of the special sanitary towel. The product comprises a surface layer, a flow guide layer, an absorption core body and a leakage-proof bottom layer which are sequentially overlapped, the surface layer contains a microencapsulation phase change material, the flow guide layer is of a double-layer structure of a sulfonylation carboxymethyl chitin fiber hydrophilic layer and a viscose fiber reverse osmosis resisting layer, and the absorption core body is formed by compounding a liquid rapid diffusion layer with gradient pores and a macromolecule water locking layer. The preparation method comprises the steps of microcapsule preparation, functional layer preparation, flow guide layer needling compounding and sectional type hot pressing assembly forming, and sectional type hot pressing is matched with polyolefin hot melt adhesive to adapt to the characteristics of all the layers. The product is suitable for the postpartum use of a puerpera, can realize rapid conduction diffusion and stable latching of liquid, and meanwhile, adjusts the sensible temperature; the preparation method is high in process adaptability, the firm structure of the product can be guaranteed, the structural and functional integrity of each functional layer is protected, and the overall stability of the product is excellent.