88results about How to "Achieve direct contact" patented technology

The invention belongs to the field of heat dissipation of electronic devices, and discloses a submerged jet micro-injection direct liquid cooling heat dissipating device, wherein the bottom of the heat dissipating device is provided with a first groove to form a sealed space with the circuit board of an object to be cooled, a second groove is arranged in the first groove for placing the object tobe cooled, the coolant enters from the inlet pipe to the nozzle through the liquid separation cavity, and the coolant sprays from the nozzle on the surface of the object to be cooled; the coolant enters from the liquid pumping hole into the outlet pipe through the collecting cavity, and then flows out from the outlet pipe, thereby realizing the collection of the cooling liquid; a plurality of nozzles and a liquid pumping hole are disposed on each surface of the second groove, the liquid pumping hole is arranged on a center line extension line of the connection of the two nozzles, and the liquid pumping hole is higher than the nozzles to avoid interference on the coolant sprayed from adjacent nozzles. Through the invention, the heat dissipation area of the chip is effectively improved, thetemperature of the chip is lowered, and the uniformity of the temperature of the chip is improved.

The invention provides a silicon-carbon composite negative electrode material for a lithium-ion battery and a preparation method thereof. The method includes steps: step 1, dispersing micron silicon in a solvent, and performing grinding to form nanometer silicon slurry; step 2, adding a carbon matrix, a binder and a conductive agent to the solvent for uniform mixing to obtain slurry 1, and addingthe nanometer silicon slurry in step 1 into the slurry 1 for uniform mixing to obtain slurry 2; step 3, drying the slurry 2 to obtain a precursor material 1, performing fusion on the precursor material 1 and a covering agent to obtain a precursor material 2, and placing the precursor material 2 in a protection atmosphere for thermal treatment to obtain a precursor material 3; step 4, crushing theprecursor material 3, mixing the crushed precursor material 3 with the covering agent, and performing high-temperature thermal covering to obtain a precursor material 4; and step 5, placing the precursor material 4 in the protection atmosphere for high-temperature carbonization treatment to obtain the silicon-carbon composite negative electrode material. According to the material and the preparation method thereof, the silicon-loaded carbon matrix is wrapped by conductive carbon so that direct contact of the silicon negative electrode and electrolyte is isolated, and the cycle performance of the battery is enhanced.

The invention relates to a packaging structure capable of achieving electricity property and heat dissipation through a mechanical press fit mode and a process method. The structure comprises pins (1). A chip (3) is arranged on the pins (1) through solder balls (2) in an inverted mode and is provided with a heat dissipation frame (4). The four sides of the heat dissipation frame (4) are downwards provided with clamping claws (5). Molding compounds (6) are arranged among the pins (1), the chip (3) and the heat dissipation frame (4) and outside the heat dissipation frame (4) in a packaging mode. By means of the packaging structure capable of achieving the electricity property and heat dissipation through the mechanical press fit mode and the process method, the problems that traditional packaging with heat dissipation pieces is high in cost and prone to failure are solved.

The invention discloses a remote control electric micro tilling machine with hub motors. The remote control electric micro tilling machine comprises a power supply, a power unit, a rotary blade assembly, a tilling depth adjusting assembly, a walking driving assembly, a control device and a vehicle frame. The electric micro tilling machine is remotely controlled, the situation that an operator directly makes contact with the micro tilling machine is avoided, and security of the operator is guaranteed. The electric micro tilling machine is purely power-driven, free of pollution and friendly to environment. A battery is used for supplying power to a main motor, a control cabinet and driving motors, so that the operating time of the main motor, the control cabinet and the driving motors and the stability of the continuous operating time of the micro tilling machine are guaranteed, and operation convenience of the micro tilling machine is improved. Meanwhile, the micro tilling machine can be steered by controlling the speeds of a left walking wheel and a right walking wheel, so that a mechanical steering mechanism is omitted, and a mechanical structure is simplified. A supporting wheel bracket is provided with a graduated scale which is used for adjustment of the tilling depth and can show the tilling depth visually. Two slots are formed in the vehicle frame of the micro tilling machine so that the gravity center of the whole micro tilling machine can be adjusted conveniently to keep the micro tilling machine in a good working state.

The invention discloses a porous metal capillary seepage microneedle electrode and a preparing method. The porous metal capillary seepage microneedle electrode comprises a porous microneedle array electrode slice, an insulated shell, an electric signal line and a capillary liquid absorbing core ring, and multiple porous microneedles with groove channels are arranged on the porous microneedle arrayelectrode slice; a cavity is formed inside the insulated shell, an opening is formed in one side of the insulated shell, the porous microneedle array electrode slice and the opening of the insulatedshell are sealably spliced to form a cavity, and the cavity is filled with the capillary liquid absorbing core ring; the groove channels are communicated with the cavity. According to the porous metalcapillary seepage microneedle electrode, based on the advantages of the microneedle structures, the adsorptivity and diversion performance of the porous groove channel structures on a solution and the conductivity of the solution are utilized for achieving direct contact between a sensor and the corium layer of the skin, the contact impedance is greatly reduced, and bio-electricity signals with ahigh signal-to-noise ratio can be collected.

The invention discloses a sludge pyrolysis and gasification system which comprises a screw feeder, a nozzle, a sludge heat drying chamber, a stirrer, a sludge pyrolysis and gasification chamber, a catalytic modification tower, a synthesis gas storage tank, a coke combustion chamber, a steam drum, a first cyclone separator, a second cyclone separator, a synthesis gas preheater, a superheater, an air preheater, an air blower and a water treatment workshop; sludge is fed into the nozzle rotating at a high speed through the screw feeder to be granulated and then sprayed into the sludge heat dryingchamber, and the sludge makes direct contact with superheated steam and heat circulating ash under the action of the stirrer for heat exchange; the dried sludge enters the sludge pyrolysis and gasification chamber to generate synthesis gas and coke; and the coke and a part of synthesis gas enter the coke combustion chamber to be combusted, and water is heated into saturated steam. The superheatedsteam and the heat circulating ash are used as drying media, sludge is subjected to heat drying in a multi-stage coupling heat exchange mode, so that the drying effect is improved, and meanwhile, sludge resource utilization is achieved through the sludge gasification-coke roasting gradient utilization technology.

The invention relates to an integration method of a high-sensitive temperature-controlled thin film hybrid integrated circuit; the integration method comprises the following steps of: firstly growing a thin film resistor, a thin film conduction band and a bonding region on the surface of an aluminium nitride (Al3N4) ceramic substrate in a thin film sputtering manner or an evaporation manner; then forming a thermistor thin film in the same manner and forming an insulating medium layer and a metallization layer required for pasting a chip on the thermistor thin film in the same manner; mounting a thermo-sensitive sensing signal processing chip, a temperature controller main chip and other active or inactive components on the substrate; and finally, bonding by adopting a bonding wire, and sealing a tube base and a tube cap in a specific atmosphere to obtain the high sensitive temperature-controlled thin film hybrid integrated circuit. The integration method can be used for realizing the gapless contact, which belongs to interatomic contact, of a thin film thermistor and the temperature controller main chip on the maximum contact surface, so that the heat of the main chip can be rapidly conducted to the thermistor to the maximum extent, and thus high-sensitive temperature control can be realized.

The invention provides an engine starter with a centrifugal clutch, wherein, the clutch comprises an internal part rotated under the drive of the engine motor torque, an external part always connected with a crank shaft of the engine, and a roller arranged next to the clutch. The engine starter is characterized in that the speed of the external part of the clutch that the roller is pushed far away from the internal part of the clutch with the centrifugal force and an oil-film is produced between the roller and the internal part of the clutch is higher than the speed of the internal and the external part of the clutch when the engine motor is rotated in no-load condition, therefore, when the engine is shut down and the starter motor is restarted, the direct contact between the roller and the clutch or the indirect contact with the help of the oil film can be realized; thus the service life of the centrifugal clutch and the reliability of the engine starter improved.

The invention provides a horizontal electroplating bath including a conductive roller (2), a conductive supporting roller (3) and a positive pole plate (4), the conductive roller (2) is used for transmission of a strip steel (1) and conduction of cathodic current in the electroplating process, the conductive supporting roller (3) is used for compacting the strip steel (1) and the conductive roller (2), the horizontal electroplating bath is characterized by also including a tilting device, the tilting device comprises a pivot (6) located at the positive pole plate end, under the action of a lifting device (7), the positive pole plate (4) can pivot around the pivot (6) to change the relative position of the positive pole plate (4) and the strip steel (1). The invention provides an electroplating zone negative and positive pole gap automatic compensation method of the horizontal electroplating bath, delta automatic compensation can be realized by regulating the tilting device according to gap compensation amount DELTA (delta) = D-delta. The electroplating zone negative and positive pole gap automatic compensation method realizes the real-time compensation of a negative and positive pole gap so as to avoid the direct contact of negative and positive poles, mechanical damages and electrical short circuit and realize smooth running of the electroplating process.

The invention discloses a total contact fluorescence detection pool for capillary electrophoresis. The detection pool comprises a detection pool body assembly, a positioning assembly and a fixing assembly. The fluorescence detection pool adopts a quadrature optical path structure, and makes an excited fiber, a fiber II and a liquid optical path vertically conjugate crossed in a pairwise conjugate manner; a simple structure is adopted to realize the physical contact of a liquid flow path, the excited fiber and a reception fiber, and a detection zone adopts a quartz material, guarantees the continuous running of an electroosmotic flow, and is suitable for capillary electrophoresis-fluorescence detection; and additionally, the positioning element and the fixing assembly matched with the detection zone are designed to make the installation and use of the detection pool convenient.

The invention discloses an aluminum etched antenna card and a manufacturing method of the aluminum etched antenna card. The aluminum etched antenna card comprises a polyester film antenna layer (1) and covering layers, wherein the polyester film antenna layer (1) comprises a polyester film and an aluminum etched antenna coil which is fixed to the polyester film, the covering layers include the upper covering layer (2) and the lower covering layer (3), the size of each covering layer is larger than that of the polyester film antenna layer (1), multiple holes (4) are formed in the polyester film antenna layer (1), and the upper covering layer (2), the polyester film antenna layer (1) and the lower covering layer (3) are combined in sequence through hot pressing. According to the aluminum etched antenna card, the upper covering layer can be in direct contact with the lower covering layer, in this way, connection of the same kind of materials is achieved, the problem of layering of existing aluminum etched antenna cards is solved, and the range of application environments of the card is effectively widened.

The invention discloses a glass coating suspension deep undercooling fast directional solidification device and a solidification method thereof. The solidification device comprises a closed furnace body. A glass pipe, a glass pipe clamp, a ball screw, an induction heater, a thermal insulation mold shell and a water cooling copper mold are arranged in the closed furnace body. The glass pipe in the closed furnace body is placed on the clamp. The clamp is driven by the ball screw. The glass pipe is filled with alloy raw materials. The closed end of the glass pipe is located in the inner axial position of the heater. After installation, the closed furnace body is vacuumized and is filled with argon. A power source of the heater is started for heating, thus the alloy raw materials are subjected to suspension melting, an alloy melt is purified, heating is continued, and thus the alloy melt is overheated. The electric current of the heater is lowered, and a deep undercooling alloy melt is obtained. Under the action of the gravity, the deep undercooling alloy melt enters a mold cavity formed by the water cooling copper mold and the thermal insulation mold shell. Fast one-way growth of a block sample is achieved. In the operation process of the solidification method, expensive Ga-In-Sn liquid alloy is not used, thus production cost is low, and operation is simple and convenient.

The invention discloses a micro channel condenser for a circulating type air source heat pump water heater. According to the micro channel condenser for the circulating type air source heat pump waterheater, refrigerant micro channel flat tubes are adopted to be parallelly arranged between a first refrigerant flow collecting tube and a second refrigerant flow collecting tube, a first water flow collecting tube and a second water flow collecting tube both communicate with a plurality of water flow dividing tubes, each water flat tube is sleeved on the outer side of each refrigerant micro channel flat tube to form a sleeve type structure, end covers penetrate through the refrigerant micro channel flat tubes to be welded to the two ends of each water flat tube to make the two ends of a ring-shaped water flow channel be closed, and a refrigerant air inlet tube and a refrigerant liquid outlet tube are connected with corresponding pipelines inside an air source heat pump system correspondingly to make a refrigerant perform circulation flowing inside the system. The micro channel condenser for the circulating type air source heat pump water heater is simple in structure, easy to machineand convenient to install; by means of an all-aluminum material lightweight design, recycling is performed easier, and circulation use is performed; by means of micro channel flat tube structures, therefrigerant side heat exchange coefficient is enhanced, the refrigerant filling quantity is reduced, and the micro channel condenser for the circulating type air source heat pump water heater can beused for higher pressure systems; and by means of the sleeve type structure, water and the refrigerant can be made to form pure countercurrent heat exchange, so that the heat transfer temperature difference is increased, and the heat transfer quantity is increased.

The invention discloses a high-temperature flexible loading device, and belongs to the field of experimental mechanics. The loading device comprises one or more heating and loading units. The heatingand loading units realize partitioned thermal loading force loading, and each heating and loading unit sequentially comprises a thermocouple, a heating body, a heat preservation and insulation layer and a water bag cover from bottom to top. A water bag is arranged in a space formed by the water bag cover and the heat preservation and insulation layer. The device is simple, reliable, rapid in heating, high in loading precision and low in test cost. The surface of a test piece is covered with a flexible heating film and a thermal insulation material. The test piece is rapidly heated. The heatingfilm directly covers the test piece, so that the heating is rapid, the surface temperature of the test piece can reach 300-1000 DEG C within tens of seconds, the heat preservation and insulation layer is paved outside the heating layer, the heating speed and the energy consumption loss are well ensured, the water bag is used for loading, and the test requirements of flexible and rapid heating andloading are met.

The invention provides an automatic position finding and welding integrated machine for an end cover and a cylinder body. The machine comprises a cylinder body alignment device, an end cover alignmentdevice and a one-way ground rail; the cylinder body alignment device comprises a lower adjusting mechanism and an upper adjusting mechanism; and a cylinder body roller carrier is further arranged above the upper adjusting mechanism and used for supporting and driving a tank body to rotate. According to the machine, spot welding in advance is not needed, the cylinder body alignment device drives the tank body to rotate and stably limit and fix the tank body at the same time, the end cover alignment device drives the tank body to synchronously rotate and stably limit and fix the end cover at the same time, and the axial distance between the cylinder body alignment device and the end cover alignment device is adjusted through the one-way ground rail, so that the butt joint seam of the cylinder body alignment device and the end cover alignment device make direct-facing contact; a motor is started, the cylinder body and the end cover rotate synchronously, an automatic welding gun directlyfaces the butt joint seam, and automatic welding is achieved.