512results about How to "Avoid heat damage" patented technology

The invention relates to the technical field of diamond hole drills, and discloses a diamond drilling tool with a chip removal function, the diamond drilling tool comprises a connecting cylinder, a drill bit is arranged at the bottom of the connecting cylinder, a chip removal mechanism is arranged, slurry is injected into a drill hole through a flow channel, the drill bit is cooled through the inrush slurry, and the chip removal function is achieved. The problems that due to the fact that a large amount of heat generated by friction between the drill bit and rock causes rapid temperature rise of the drill bit, thermal damage of diamond particles is caused, the cutting performance of the drill bit is reduced, and the service life of the drill bit is prolonged are solved, and meanwhile, due to the viscosity and fluidity of the slurry, rock debris can be suspended and brought out of holes along with continuous injection of the slurry; in this way, the hole bottom can be kept clean, a good condition is created for continuous drilling of the drill bit, a layer of lubricating mud film is formed between the drill bit and the hole wall, friction resistance between a drilling tool and the hole wall can be reduced, and energy consumption in the drilling process is reduced.

The utility model discloses a purifying and heating all-in-one machine which is provided with a raw water inlet and comprises a filtering unit with a filter element; the heating device comprises a heating cavity and a heating body, a water inlet of the heating cavity is communicated with the pure water outlet of the filtering unit, and the heating cavity is provided with a reflux inlet for discharging hot water to the filtering unit; the cooling device comprises a water storage cavity, and the raw water inlet is communicated with the filtering unit through the water storage cavity; one end of the backflow pipeline is communicated with the backflow opening, the other end of the backflow pipeline is communicated with a fluid path between the water storage cavity and the filtering unit, and at least partial area of the backflow pipeline is arranged in the water storage cavity in a penetrating mode. According to the heat purifying and purifying all-in-one machine, hot water which is not taken for a long time and needs to be emptied can flow back to the filtering unit to be filtered and reused, water resources can be saved, water flow waste is reduced, the emptied hot water participates in heat exchange, heat damage to the filtering unit due to the fact that the water temperature is too high is avoided, and the service life of the filtering unit is prolonged. And the water production capacity and the anti-freezing performance of the filtering unit can be improved.

The utility model discloses a dustproof heat dissipation type LED mining lamp which comprises a miner lamp body, heat dissipation fins are arranged on the upper surface of the miner lamp body, a fixing box is fixedly connected to the outer surface of the miner lamp body, a motor is fixedly connected to the top inner wall of the fixing box, the output end of the motor is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with a power source. The outer surface of the rotating shaft is fixedly connected with a fan, and the inner surface of the fixing box is fixedly connected with an air pipe. Heat generated by the miner lamp body is effectively dissipated out in time through the cooling fins, the motor, the rotating shaft, the fan and the filter screen, so that the temperature of the miner lamp body in the using process is kept within a safe range, the miner lamp body is prevented from being damaged or exploded at a high temperature, the filter screen can also prevent external dust from entering the fixing box, and the miner lamp is convenient to use. And the miner lamp body can be effectively kept clean under the cooperation of the air pipe and the spray head, so that the stability of the lighting effect is ensured, and the safe operation of miners in a well is ensured.

The invention relates to aramid nanofiber-based carbonaceous aerogel and a preparation method thereof. The preparation method comprises the following steps: dispersing aramid fibers in an alkali solution, and washing with deionized water to obtain an aramid fiber dispersion liquid; performing vacuum filtration on the aramid fiber dispersion liquid, and performing freeze drying to obtain aramid fiber nanofiber aerogel; the aramid fiber nanofiber aerogel is subjected to carbonization treatment, and the aramid fiber nanofiber based carbonaceous aerogel is prepared. According to the preparation method disclosed by the invention, the highest evaporation rate of the obtained aramid nanofiber-based carbonaceous aerogel can reach 3.42 Kg / m < 2 > h by regulating and controlling the hydrolysis degree of the aramid fibers and combining vacuum suction filtration, and the aramid nanofiber-based carbonaceous aerogel has a good evaporation effect; in actual use, hydrophobic treatment is carried out on the upper surface of aerogel, and the defect that the photo-thermal evaporation effect of a product is reduced due to the fact that an open water layer is generated at a gas-liquid interface in the use process is effectively overcome.

The invention provides a wafer bonding method, which comprises the following steps that a first silicon substrate is provided, a plurality of concave cavities are formed in a preset area of the first silicon substrate, the concave cavities are opened from the top surface of the first silicon substrate and extend downwards by a preset depth, and getter layers are formed on the bottom walls and the side walls of the concave cavities; providing a second silicon substrate, and directly bonding the first silicon substrate and the second silicon substrate; and annealing treatment. According to the invention, by introducing the activation treatment, the first silicon substrate and the second silicon substrate can realize high-quality bonding at a low temperature, and a strong bonding force is maintained. Meanwhile, a plurality of concave cavities filled with getter layers are formed in the first silicon substrate, and the getter layers are activated by adopting vacuum heating treatment, so that the getter layers can quickly and effectively absorb gases such as water vapor and the like generated on an interface in the low-temperature annealing process, the gases are effectively prevented from being accumulated at the bonding interface, cavities are effectively prevented from being formed, and the bonding quality of the semiconductor device is improved. And the reliability and the stability of direct bonding are further improved.

The time difference method ultrasonic flowmeter comprises a cable and an assembling mechanism, the upper end of the cable is provided with a fixing frame through a clamping base, the upper end of the fixing frame is provided with a solar energy device, the output end of a motor is connected with a reverse screw rod, and the output end of the motor is connected with a power source. Fixing rods are installed at the left end and the right end of the surface of the reverse lead screw in a threaded mode, an ultrasonic flowmeter body is placed in the machine box, and fixing plates are installed on the left side and the right side of the ultrasonic flowmeter body. According to the time difference method ultrasonic flow meter for the open channel and the river channel, the ultrasonic flow meter body can be fixedly installed through the fixing mechanism, the effect of protecting the ultrasonic flow meter body is achieved, meanwhile, rapid disassembly and overhaul are convenient, the transducer assembly is convenient to assemble through the assembling mechanism, the effect of adjusting the length of the transducer assembly is achieved, and the time difference method ultrasonic flow meter is convenient to use. And a heat dissipation mechanism is arranged, so that the ultrasonic flowmeter is prevented from being damaged at high temperature.

The invention discloses a laser cutting method for beveling of plastic pipes, and relates to the technical field of beveling cutting of plastic pipes. The laser cutting method comprises the following steps: clamping and lifting one end of the pipe by a clamping head, and supporting the other end of the pipe on a side support roller; adjusting the height of the bottom support roller; driving the internal pressure mechanism to translate into the inside of the pipe; adjusting the height of the bottom pressure roller of the internal pressure mechanism; adjusting the side pressure roller to press against the inner wall of the pipe; setting the data of the pulse adjustment module, and programming through the cutting trajectory control module of the laser cutter; moving the laser cutter; and spraying coolant to the cutting position during the cutting process. The advantages of the present invention are: the two ends of the pipe are respectively fixed by clamping and supporting, the pipe is not easy to bend and deform, the pipe will not shake during beveling cutting, and the cutting trajectory accuracy can be guaranteed; the debris generated during the cutting process is removed by spraying coolant, and the coolant can cool the pipe to avoid thermal damage to the pipe.

The utility model discloses a forming tool for a variable cross-section composite material barrel. The forming tool comprises a first end cover, a second end cover, an upper die and a lower die, wherein the upper die and the lower die are provided with molded surfaces matched with the outer surface of the variable cross-section composite material barrel; and the composite core mold is provided with a molded surface matched with the inner surface of the variable cross-section composite material barrel, the composite core mold is located in a cavity defined by the upper mold, the lower mold, the first end cover and the second end cover, and a cavity used for forming the variable cross-section composite material barrel is defined by the upper mold, the lower mold and the composite core mold. The integral male die is made of low-melting-point alloy, thermal damage of high temperature to the composite barrel is avoided, secondary machining of the molded surface of the male die is not needed, the molded surface is smooth, the manufacturing period is short, and the comprehensive cost is low.

The invention provides a high-heat-conductivity diamond / metal joint and a brazing method thereof, and relates to the technical field of dissimilar material brazing connection. A brazing method for a high-heat-conductivity diamond / metal joint comprises the following steps that the surface of a diamond is machined through laser, and a periodic micro-nano structure is drawn on the surface of the diamond; and the surface, drawn with the periodic micro-nano structure, of the diamond is coated with brazing filler metal, fixing is carried out according to a diamond / brazing filler metal / metal sandwich structure, vacuum brazing is carried out, and the high-heat-conductivity diamond / metal connector is obtained. A periodic micro-nano structure is introduced into a diamond ablation area in the laser processing process, so that more efficient heat transfer and heat conduction performance improvement of an interface can be realized, the interior of a joint structure is uniform and has no defect, and the mechanical property of a joint is improved; the problem that the traditional connection technology is difficult to meet the mechanical property and heat transfer performance requirements of the diamond / metal interface at the same time is solved.

The invention belongs to the technical field of ultrasonic scalpel energy control, and particularly relates to an ultrasonic scalpel energy control method based on a vascular tissue model. According to the method, the blood vessel layering model is established, the mechanical property change of the blood vessel tissue is monitored in real time, the real-time energy loss is accurately calculated, and the real-time output power of the ultrasonic knife system is adjusted in real time according to the real-time loss angle. According to the method, the cavitation, curing and disjunction stages can be judged according to the real-time state of the vascular tissue, energy output is accurately controlled, it is ensured that the large-diameter blood vessel is fully cured, the bursting pressure is increased, and meanwhile thermal damage caused by excessive curing of the small-diameter blood vessel is avoided. The problems that a traditional ultrasonic scalpel system is inaccurate in energy control and poor in adaptability to blood vessels with different diameters can be effectively solved, the heat injury and postoperative bleeding risks in the blood vessel cutting process are remarkably reduced, the operation efficiency is improved, and postoperative recovery of a patient is better facilitated.

The invention relates to the field of base material surface cleaning, in particular to a coupling cleaning spray head which comprises a shell. The dry ice channel is arranged in the shell, and one end of the dry ice channel is used for containing dry ice particles; the first plasma channel is arranged in the shell, and one end of the first plasma channel is used for introducing plasma; and the first nozzle is arranged on the shell and is communicated with the other end of the dry ice channel and the other end of the first plasma channel. The coupling cleaning spray head can solve the problems that an existing base material cleaning device cannot have the advantages of being suitable for precision devices sensitive to water or poor in sealing performance, not enabling a base material to generate a large temperature difference and being capable of efficiently cleaning pollutants of various layer thicknesses at the same time. The device has the advantages that the device is suitable for precision devices sensitive to water or poor in sealing performance, large temperature difference is not generated, and various pollutants with different thicknesses on the surface of a base material can be efficiently removed.

The invention discloses an application of an Mxene-Mo4VC4 new member nano platform with light-enhanced peroxidase activity in treatment of methicillin-resistant staphylococcus aureus infection so as to promote healing of infected wounds, and belongs to the field of two-dimensional nano material catalyst antibacterial research. The single-layer Mo4VC4 nanosheet is synthesized on the basis of Mo4AlVC4-MXene through a hydrofluoric acid etching method. The Mo4VC4 nanosheet shows activity similar to peroxidase, and can locally catalyze low-concentration hydrogen peroxide and generate hydroxyl radicals toxic to bacteria, so that methicillin-resistant staphylococcus aureus is effectively killed, and a biological membrane is removed. In addition, high photo-thermal conversion efficiency and photo-thermal stability are shown under irradiation of near-infrared light with low concentration (50 mu g / mL). The similar peroxidase activity is obviously amplified by the temperature rise caused by the photothermal effect of the Mo4VC4 nanosheet. And finally, rapidly eliminating methicillin-resistant staphylococcus aureus in deep infection and accelerating abscess regression by adopting a satisfactory photo-thermal amplification peroxidase strategy.

The utility model relates to the technical field of access control, and discloses a mounting seat for a face recognition access control machine, which comprises a protective shell, a ventilation component is arranged on the inner side of the protective shell, filter components are arranged inside the left side and the right side of the protective shell, and an electric push rod is fixedly connected inside the rear side of the protective shell. Rotating rods are rotationally connected to the left side and the right side of the top end of the electric push rod correspondingly, connecting rods are rotationally connected to the bottoms of the two rotating rods correspondingly, fixing blocks are fixedly connected to the front portions of one ends of the two connecting rods correspondingly, clamping plates are fixedly connected to the front sides of the two fixing blocks correspondingly, and rubber pads are slidably connected to the interiors of the opposite sides of the two clamping plates correspondingly. According to the utility model, the two clamping plates move oppositely to fix the access control machine in the protective shell, so that the access control machine is protected and prevented from being damaged, the filter plate can prevent dust from entering the protective shell, and the filter plate can be detached to be cleaned to keep the filtering effect.

The invention relates to the technical field of tool cladding, in particular to a high-speed multi-laser-head synchronous cladding device for tool machining. Comprising a chassis; the controller is mounted at the top of the chassis; the mounting column is connected to the middle of the top of the chassis; the first electric push rod is mounted in the mounting column; the lifting plate is connected to a telescopic rod of the first electric push rod; the first mounting frame is connected to the side surface of the lifting plate; the telescopic storage frame is mounted at the lower part of the first mounting frame; and the second electric push rods are symmetrically mounted at the upper part of the first mounting frame. Through cooperation of the telescopic storage frame, the flow dividing pipe and the fixing pipe, a proper amount of soldering paste can be smeared to the cutting edge of the tool, then a metal powder material is sprayed to the cutting edge of the tool through the metal powder spraying gun, and the metal powder material can be fixed to the cutting edge of the tool under the action of the soldering paste; and then the cutting edge of the cutter is subjected to laser cladding, so that the phenomenon that the metal powder material splashes can be prevented.

The invention relates to an eddy current heating device for hot assembly of a wheel body in the technical field of brake wheel assembly in the hoisting industry, and the eddy current heating device comprises a moving trolley and a workbench, a supporting frame plate is vertically fixed on the workbench, a transverse box frame is fixed at the top end of the supporting frame plate, and the workbench is sequentially divided into a preheating station, a heating station and a detection station in the longitudinal direction; the front side of the upper table top of the workbench is provided with guide rails corresponding to the preheating station, the heating station and the detection station in the transverse direction of the workbench, the moving trolley comprises a trolley body, and guide wheels correspondingly clamped with the guide rails are installed on the lower surface of the trolley body; telescopic cylinders with downward telescopic rod ends are mounted on the transverse box frame corresponding to the preheating station, the heating station and the detection station respectively, cap-type profiling covers are coaxially fixed to the telescopic rod ends of the preheating station and the heating station, induction heating coils are wound around the cover walls of the cap-type profiling covers, and the telescopic rod end of the detection station is connected with a temperature detection device; the eddy current heating equipment can improve the heating effect and efficiency of the wheel body.

The present invention discloses a grinding device for processing a brake disc, which relates to the technical field of brake disc processing, and comprises a box body and a brake disc body. A placing table is rotatably installed on the top of the box body, and the brake disc body is installed on the top of the placing table. A fixed frame is fixedly installed on one side of the box body, and a mobile frame is arranged on the fixed frame. A first cross bar is arranged on one side of the mobile frame, and a grinding component for grinding the upper and lower surfaces of the brake disc body is arranged on the first cross bar. The grinding device for processing a brake disc realizes reciprocating and uniform grinding of the brake disc body by a surface grinding piece through a series of mechanical linkage structures driven by a driving motor. This mechanized grinding method is more accurate and stable than manual operation, and effectively improves the grinding efficiency and quality.

The invention relates to the technical field of smelting devices, and provides a direct-current submerged arc furnace for smelting, which comprises an operation platform, an electric furnace body, a low smoke hood type furnace cover, a guide rack, a rectifier transformer, a direct-current power supply, a cooling water system and a hydraulic station, and is characterized in that the low smoke hood type furnace cover is erected and mounted at the upper end of the electric furnace body; the low smoke hood type furnace cover is composed of a side wall and a top cover, a graphite electrode clamp is arranged above the low smoke hood type furnace cover, the graphite electrode clamp comprises a connecting shaft, the upper end of the connecting shaft is fixedly connected with the guide rack, and a sliding rod is vertically installed at the upper end of the connecting shaft. An original alternating-current submerged arc furnace holder system is omitted, the electric arc furnace type conductive cross arm stand column is adopted for lifting, lifting is stable, the lifting speed is adjustable and controllable, a traditional alternating-current transformer is designed into a rectifier transformer and a direct-current power source, main electric energy is provided, electric energy loss is reduced, and the effects of saving smelting cost and reducing power grid impact are achieved.

The invention provides a planar electrode for spinal cord electrical stimulation and a preparation method thereof, and belongs to the technical field of medical instruments, and specifically, the planar electrode comprises a flexible substrate, electrode stimulation points, a conductive circuit, a bonding pad and a flexible insulating layer; a modification layer is deposited on the upper surface of the electrode stimulation point, the modification layer forms a grass-shaped morphology with forest leaves, and the modification layer is a platinum layer or a platinum-iridium alloy layer. A platinum layer or a platinum-iridium alloy layer is adopted as a modification layer, the effect of reducing impedance can be achieved, compared with a traditional plane morphology, the grass-shaped morphology with the forest blades can greatly increase the contact area between a film layer and tissue, the impedance is effectively reduced, dissipation of current on an electrode and a biological tissue interface can be reduced through the low impedance, and the service life of the electrode and the biological tissue interface is prolonged. Charge injection efficiency is improved, heating is reduced, tissue thermal damage is avoided, meanwhile, the platinum-iridium alloy material is reversible in chemical reaction in the electrical stimulation process, and toxic substances or material loss caused by the reaction cannot be generated.

The invention relates to a polyester hollow textured yarn and a production method thereof, and the production method comprises the following steps: firstly, preparing polyester hollow filaments through a melt spinning method; secondly, the polyester hollow filaments are subjected to secondary processing on a BCF spinning device, specifically, the polyester hollow filaments are sequentially subjected to oil treatment, first pre-network treatment, first hot drafting, deformation treatment, cooling shaping, yarn dividing treatment, first main network treatment and winding forming, and the polyester hollow textured yarn is obtained. The BCF spinning device is adopted to conduct secondary processing on the polyester hollow filaments, the filaments are expanded and deformed instantly under the preset high-temperature and high-pressure environment, the filaments are cooled and shaped through the negative pressure technology, natural curling is generated in the process, on the basis that the high hollowness characteristic is kept, the rebound resilience of the fiber is enhanced, and the fiber has the good elasticity. Therefore, the overall performance and the application value of the product are improved.

The quartz product degreasing and cleaning device comprises a pot body and a cover body arranged on the pot body, a containing cavity is formed in the pot body and comprises a containing space used for containing a quartz product and a supporting space located below the containing space, and a supporting piece used for supporting the quartz product is arranged in the supporting space; the supporting piece is provided with a plurality of supporting parts extending in a strip shape on the bottom wall of the containing cavity, and a collecting area used for collecting grease is formed among the multiple supporting parts. The pot body and the cover body are matched to provide a micro-pressure cleaning environment, the liquid medium in the pot body is heated to be boiled, the cleaning effect on the quartz product is improved, evaporation of the liquid medium is reduced, and diffusion of steam with dissolved lipid substances is reduced. And the supporting piece limits the displacement of the quartz product, so that the structural damage caused by collision between the quartz product and the pot bottom is reduced. Part of pollutants difficult to dissolve fall into the collecting area after being separated from the quartz product, so that the pollutants are prevented from being in contact with the quartz product again, and repeated pollution to the quartz product is avoided.

The invention relates to the technical field of OLED micro-displays, and discloses a temperature sensor calibration and external temperature compensation method for an OLED micro-display, and the method comprises a temperature compensation parameter storage module which is used for storing the temperature calibration data of the OLED micro-display through a one-time programmable memory OTP. According to the temperature sensor calibration and external temperature compensation method for the OLED micro-display, the actual working temperature Tactual is calculated by using the current temperature register value REG1 measured by the temperature sensor and factory calibration data T0 and REG0, the brightness change is compensated by adjusting the common voltage Vcom in real time, and the temperature of the OLED micro-display is compensated by combining a temperature compensation formula. The brightness of the display is accurately controlled by adjusting the electric field intensity, the Vcom is improved in a low-temperature environment to compensate brightness reduction, and the Vcom is reduced in a high-temperature environment to prevent excessive light emission or thermal damage, so that the problem of inconsistent display effects in long-term use is solved, and the user experience is improved.

The invention provides a bonding method, which comprises the following steps of: providing a first silicon substrate which comprises a central region and an edge region, and forming a step at the joint of the edge region and the central region; forming a getter layer on the edge area, wherein the getter layer covers the surface and the side wall of the step; forming a plurality of cavities in a blank area of the central area; providing a second silicon substrate, and directly bonding the second silicon substrate with the surface, provided with the getter layer, of the first silicon substrate; and carrying out annealing treatment. According to the method, the first silicon substrate and the second silicon substrate are activated, so that the first silicon substrate and the second silicon substrate can realize high-quality bonding at a relatively low annealing temperature, and relatively high bonding force is kept. By forming a plurality of concave cavities and getter layers, gas such as water vapor and the like generated in a low-temperature annealing process can be quickly and effectively absorbed during escape and diffusion in any direction, so that accumulation of the gas at a bonding interface is effectively avoided, formation of holes is effectively prevented, and the reliability and stability of direct bonding are improved.

The invention provides a method for preparing a Cu-Al2O3-EP mixed corrosion-resistant coating, which comprises the following steps: carrying out surface treatment on a base material, and sequentially grinding, polishing, cleaning, drying and sandblasting to obtain a base material to be sprayed; the preparation method comprises the following steps: mechanically mixing Cu powder, Al2O3 ceramic particles and epoxy resin EP powder to obtain cold spraying prefabricated powder; and the prefabricated powder is subjected to low-pressure cold spraying to a to-be-sprayed base material, after the coating is cooled and cured, polishing and correction are conducted, and the Cu-Al2O3-EP mixed corrosion-resistant coating is obtained. The prepared coating has excellent mechanical strength and corrosion resistance, has good thermal stability and toughness, and is suitable for various harsh application environments.

The invention provides an interface system used for spinal cord electrical stimulation and a spinal cord electrical stimulation electrode device, and belongs to the technical field of medical instruments, the interface system comprises a circuit board and a flip connector, the flip connector is welded on the circuit board, the flip connector is provided with an electrode pad jack used for insertion of an electrode pad, and the flip connector is connected with the circuit board. And the flip cover can be opened and closed in a flip manner so as to fix the electrode bonding pad. The interface system for spinal cord electrical stimulation comprises a circuit board and a flip cover connector, the flip cover connector is welded on the circuit board, and the flip cover connector is provided with an electrode bonding pad jack for inserting an electrode bonding pad and a flip cover capable of being opened and closed in a flip mode to fix the electrode bonding pad. By adopting the flip connector, the electrode bonding pad can be quickly inserted and detached, the design is more reasonable, and an operator can conveniently insert and pull out the electrode bonding pad.

The utility model discloses a transfer printing substrate and a slurry transfer printing system. The transfer printing substrate comprises a substrate body and a demolding structure layer, a plurality of packing grooves which are distributed at intervals are formed in one side of the base plate body, and the packing grooves are used for being filled with slurry; and a demolding structure layer is attached to the surface of the inner wall of the filler groove, is used for being in contact with slurry and can generate vibration to remove the slurry. By the adoption of the transfer printing substrate, the filler groove can be filled with the slurry firstly, then the slurry is removed from the filler groove by controlling the demolding structure layer to generate vibration, transfer printing operation of the slurry is achieved, in this way, the service life of the transfer printing substrate can be guaranteed, and heat damage to the substrate body and the printing substrate in the slurry removing process can be avoided.

The invention relates to a bipolar electrotome, comprising: a housing; the transmission assembly comprises a sleeve and a first transmission rod, one end of the first transmission rod is in threaded connection with an adjusting piece, the shell is provided with a first clamping groove, the adjusting piece is located in the first clamping groove and can rotate in the first clamping groove, the sleeve is provided with a first sliding groove, and the first transmission rod is provided with a second sliding groove; the clamping assembly comprises a first clamping piece, a second clamping piece, a first rotating shaft and a second rotating shaft, the first clamping piece is connected with the sleeve, the second clamping piece is hinged to the sleeve through the first rotating shaft, the first rotating shaft is in sliding connection with the second sliding groove, the second rotating shaft is connected with the first transmission rod, and the second clamping piece is provided with a third sliding groove; the second rotating shaft is slidably connected with the first sliding groove and the third sliding groove. The output end of the driving assembly is connected with the sleeve; the cutting assembly comprises a cutting piece, and the cutting piece is in sliding connection with the first clamping piece. According to the bipolar electrotome, the adjustment steps of the opening and closing postures can be simplified, and the adjustment range is widened.

The utility model relates to the technical field of battery protection, in particular to a battery pack and electric equipment. The battery pack comprises a battery box and a plurality of battery cells, wherein all the battery cells are horizontally mounted in the battery box; expansion flame-retardant glue is filled between at least one part of adjacent battery cells; and the expansion flame-retardant adhesive can expand after being heated to push away the surrounding battery cells, so that the horizontal distance between the battery cell with thermal runaway and other surrounding battery cells is increased. Wherein when thermal runaway occurs in a certain battery cell filled with the expanded flame-retardant adhesive at the periphery, the generated heat enables the expanded flame-retardant adhesive to be heated and expanded, and the expanded flame-retardant adhesive which is heated and expanded pushes away the surrounding battery cells, so that the horizontal distance between the thermal runaway battery cell and other surrounding battery cells is increased, and the heat transfer resistance is increased. Meanwhile, the expanded flame-retardant adhesive which expands when heated is blocked between the thermal runaway battery cell and other surrounding battery cells, so that the heat transfer resistance is further increased, and the other surrounding battery cells are prevented from being damaged by heating.

The invention provides a temperature control method for an ultrasonic high-frequency instrument, and the method comprises the steps: collecting the temperature of a tool bit, and enabling the temperature of the tool bit to be obtained through a temperature sensor disposed at the tool bit; collecting a feedback signal in the energy output loop; calculating an energy adjustment coefficient according to the temperature of the tool bit and the feedback signal; and correspondingly adjusting the output ultrasonic energy and high-frequency electric energy according to the energy adjustment coefficient. According to the technical scheme, the temperature sensor is used for monitoring the temperature of the scalpel head, the output energy is adjusted in a self-adaptive mode according to the scalpel head temperature collected in real time and the feedback signal in the energy loop, the requirement of an operation can be met, and the situation that the scalpel head is overheated, and consequently thermal damage to biological tissue is caused can be effectively prevented; therefore, the dependence on operation experience is reduced, and the safety and the universality of the ultrasonic high-frequency instrument are improved.

The invention relates to the technical field of radars, and discloses an active ventilation cooling system and method for a radar radome, the system comprises a top ventilation opening, the radome, an active ventilation cooling device and a fan controller, the top ventilation opening is located at the top end of the radome and is used for natural ventilation and auxiliary heat dissipation; the antenna housing is designed to be in a cavity opening type hemisphere shape so as to adapt to installation and operation of a radar antenna. The active ventilation cooling device is arranged at the bottom end of the antenna housing and is used for air intake and air exhaust; and the fan controller is used for controlling the start and stop of the active ventilation cooling device. The problem of poor heat dissipation of the radar radome in a high-temperature environment can be solved, and efficient heat dissipation, automatic control and all-weather work are realized.

The invention discloses a mounting structure and a mounting method of a Mini / Micro LED (Light Emitting Diode) chip. The mounting method comprises the following steps: arranging a plurality of LED chips on a PET film; the PET film and the substrate are attached in an aligned mode, and the bonding pads of the LED chips correspond to the bonding pads on the substrate one to one; a bonding pad on the substrate is provided with conductive particles, and each conductive particle comprises a metal conductive ball and a conductive adhesive coating the surface of the metal conductive ball; and hot-pressing the PET film, melting the conductive adhesive through heat conduction, and fixing the LED chip on the substrate through the conductive adhesive after cooling. According to the surface mounting method adopted in the technical scheme, the implementation temperature is the hot melting temperature of the conductive adhesive, mechanical connection between the LED chip and the substrate is further formed after the conductive adhesive is cured, and compared with traditional reflow soldering operation, the temperature is greatly reduced, so that thermal damage to the LED chip caused by high-temperature operation can be effectively prevented.