78results about How to "Avoid local overheating problems" patented technology

The invention relates to a low-temperature heating device for a lithium-ion battery; the low-temperature heating device comprises the lithium-ion battery, two power devices of a motor controller and two winding inductors of a motor; the low-temperature heating device also comprises a heating control circuit arranged between the power devices of the motor controller and a negative electrode of thelithium-ion battery. The lithium-ion battery, the two power devices of the motor controller, the two winding inductors of the motor and the heating control circuit are successively connected to form acircuit. The heating control circuit comprises a capacitive element, an additional power device and a switching device. The capacitive element and the additional power device are connected in seriesand then connected in parallel with the switching device. An LC oscillating circuit is formed by the capacitive element and the winding inductors through opening and closing of the switching device and the additional power device respectively, and the high-frequency alternating current is generated. According to Joule's law, the heat is generated in the battery, and then the interior of the battery is heated. The device can be used for quickly and efficiently heating, and has uniform speed and good effect.

The invention discloses a middle frame of terminal device, a preparation method thereof and a mobile terminal. The middle frame comprises a base plate. At least one heat pipe is arranged in the base plate. The heat pipe stretches from a first position of the base plate to a second position of the base plate. When the terminal device operates, the heating value of the first position is greater than that of the second position. According to the middle frame of the terminal device provided by the embodiment of the invention, the heat pipe is integrated in the base plate of the middle frame; through utilization of a rapid temperature equalization feature of the heat pipe, the heat in a high temperature area of the base plate can be rapidly transferred to a low temperature area; the heat pipe has a very high heat conductivity coefficient, and generally, the heat conductivity coefficient is as high as thousands (W/m2.K); the heat conductive capability of the middle frame is greatly improved; the heat is rapidly and uniformly dissipated; the temperature rise of the complete machine of the terminal device is controlled in a reasonable range; the problem of partial overtemperature is avoided; and the use experience of the user is improved.

The invention provides a nickel-based catalyst, a preparation method thereof and a method for catalyzing methane cracking to produce hydrogen. The catalyst includes a nickel-based composite metal oxide with a general formula shown as xX.yA.zB.(100-x-y-z)M, wherein X is Ni and /or its oxide, A is an auxiliary metal component, B is an assistant metal component, and M is a carrier. The method for catalyzing methane cracking to produce hydrogen includes: contacting methane-containing feed gas with the catalyst in a high density circulating fluidized bed reactor, and carrying out catalytic cracking reaction to obtain hydrogen containing product-gas and a deactivated catalyst, performing separation in a settler, letting the catalyst carry carbon deposit to enter a regenerator for regeneration, thus obtaining regenerated flue gas containing CO or synthetic gas, and letting the regenerated catalyst enter the reactor again. The heat generated by regeneration supplies the energy need of the whole system to realize self-heating operation. The method provided by the invention can realize large-scale continuous production of hydrogen at low price, and can effectively reduce energy consumption and save the production cost.

The present application discloses a heat dissipation component and an electronic device. The heat dissipation component comprises a middle frame, a circuit board, a heat source chip and a heat tube, wherein the middle frame comprises a first region and a second region, which are opposite to each other; the circuit board is arranged to the first region; the heat source chip is arranged on the circuit board and located between the circuit board and the middle frame; the heat tube is arranged in the middle frame and comprises a first section and a second section; the end portion of the first section is connected with the heat source chip and stretches to the side wall of the middle frame; and the second section is attached to the side wall of the middle frame and stretches to the second region. Through the aforementioned manner, the electronic device can be avoided from local overheating to result in damage of components; besides, the heat is dispersed which facilitates to improve the holding feeling of the electronic device and improve the user experience.

The invention discloses a cooling assembly and an electronic device. The cooling assembly comprises a circuit board, a hot source chip, a shielding cover, a metal heat conduction piece and a hot pipe,wherein the hot source chip is arranged on the circuit board, the shielding cover covers the circuit board and encircles the hot source chip, a first hollow region is arranged on a top wall of the shielding cover and is corresponding to the hot source chip, the metal heat conduction piece is arranged in the first hollow region, the metal heat conduction piece and the shielding cover are used forjointly performing signal shielding on the hot source chip, an evaporation segment of the hot pipe is arranged at one side, far away from the hot source chip, of the metal heat conduction piece, and the hot pipe is used for conducting out heat of the hot source chip. By the mode, on one hand, a part of the shielding cover is substituted by the metal heat conduction material, and the heat conductivity of the shielding cover can be improved; and on the other hand, the problem of local overheat of the electronic device is prevented, and damage to a component due to local overheat is prevented.

The application provides a circuit board, a method of fabricating the same, an electronic component including the circuit board, and electronic equipment. Through the change of the liquid phase and gas phase of a cooling medium in a heat conducting layer in the circuit board, heat can be efficiently transferred from a high temperature zone to a low temperature zone, thereby enhancing the heat transfer effect of the circuit board. In the electronic equipment, by using the circuit board to connect different modules or structures, heat of a module with large heat generation can be transmitted toa position with low heat generation or a heat dissipation structure, thereby avoiding local high temperature in the electronic equipment, ensuring uniform heat throughout the electronic equipment andimproving the heat dissipation effect of the electronic equipment.

The invention discloses a cooling assembly and an electronic apparatus. The cooling assembly comprises a middle frame comprising a first region and a second region which are opposite, a circuit boardarranged in the second region, a heat source chip arranged on the circuit board and located between the circuit board and the middle frame, and a heat pipe comprising an evaporation section and a condensation section, wherein the first region forms a battery cabin used for accommodating a battery; the evaporation section is connected with the heat source chip; and the condensation section is connected with the battery cabin, so that heat of the heat source chip is transferred to the battery cabin. Through the cooling assembly, the damage of components caused by local overheat of the electronicapparatus can be avoided; and in addition, by heat dispersion, the hand feeling of holding the electronic apparatus is improved, so that the user experience is improved.

The invention discloses a mobile bamboo drying device for bamboo and wood processing, which comprises a shell, an air pump, a drying filter, a heating pipe, fan blades, an annular heating air pipe, an exhaust pipe, a turntable, a placement frame and a motor. An air pump, an air intake pipe, a dry filter, a first connecting air pipe, a heating chamber, a second connecting air pipe, a partition, an annular heating air pipe, an exhaust pipe, a turntable, a mounting frame, a thermometer, a motor, a pressure relief pipe and a million The steering wheel; the heating chamber is provided with a heating pipe, a bracket, a fan blade and a third connecting air pipe. The invention heats the air after drying and removing impurities, thereby using high-temperature air to heat and dry the bamboo and wood processed parts, so that the processed parts can be baked and dried quickly and stably, and the processing efficiency is effectively improved.

The invention provides low-consumption spray-type heat pipe cooling complete equipment suitable for a communication cabinet. The low-consumption spray-type heat pipe cooling complete equipment comprises an outdoor unit (a heat discharge part) and a cooling cabinet (a heat absorption part), wherein the cooling cabinet is arranged in a communication machine room; the outdoor unit communicates with the cooling cabinet through a Freon gas pipe and a Freon liquid pipe; the outdoor unit comprises a heat exchange coil; the heat exchange coil comprises a heat exchange coil input port and a heat exchange coil output port; the heat exchange coil input port is connected with a compressor and a first electromagnetic valve respectively; the compressor and the first electromagnetic valve are connected to a gas-liquid separator; the gas-liquid separator is connected with the Freon gas liquid; the heat exchange coil output port is sequentially connected with a reservoir and a dry filter; the dry filter is connected with a throttle mechanism and a fluoride pump respectively; the throttle mechanism and the fluoride pump are connected with the Freon liquid pipe; and the outdoor unit also comprises a fan, a spray pump, a water collecting tray and the like.

The invention discloses a disposable laser metal thermal therapy target head. A target head main body comprises an aluminum-titanium alloy and a pure silver coating; the target head main body is a cylinder with a conical head at the front end and is made of aluminum-titanium alloy, and the outer wall of the front end of the target head main body is coated with a pure silver coating; the rear end of the target head main body is an extension plastic pipe, a plastic pipe vacuum heat preservation layer is arranged in the circumference of the section of the extension plastic pipe, and the space between the extension plastic pipe and the plastic pipe vacuum heat preservation layer is filled with a heat preservation material; an optical fiber hollow channel, a thermocouple channel and an automatic temperature control thermo-sensitive material channel are arranged at the rear part of the front end of the target head main body, and an optical fiber is connected to a laser emitter through an optical fiber connector; the rear end of a linear automatic temperature control thermo-sensitive material is inserted into an optical fiber wire connected to the laser emitter; and the laser emitter andthe temperature sensor are connected to a control computer through data transmission lines. According to the laser thermal therapy target head, the thermal therapy action area of the laser target headcan be remarkably increased, local heating caused by laser energy accumulation is avoided, and the laser thermal therapy treatment effect is enhanced.

The invention discloses a box plate and frame combined type satellite configuration, and relates to the technical field of satellites. The box plate and frame combined type satellite configuration comprises a platform cabin, a load cabin and a sailboard; the load cabin is located at the top of the platform cabin; the platform cabin comprises a platform box body and a platform frame structure; the load cabin comprises a load plate, a load frame structure and a load truss structure; the platform frame structure is arranged in the platform box body, the bottom of the platform frame structure is connected with the platform box body, and the top of the platform frame structure is connected with the load plate; the outer side face of the load frame structure is connected with the sailboard, and the inner side face of the load frame structure is connected with the load truss structure; the load frame structure and the load truss structure are both connected with the top of the load plate; and the bottom of the platform box body is connected with a butt joint ring. The invention aims to provide the box plate and frame combined type satellite configuration, so that the universal performance is improved to a certain extent, different customization requirements are met, and the box plate and frame combined type satellite configuration can be further suitable for satellites of various load types.

The invention relates to the technical field of driving devices, and discloses a stator assembly and a motor, the stator assembly comprises an iron core and a stator winding, the iron core is provided with a through hole, the inner wall of the through hole is provided with an even number of N stator grooves, and the N stator grooves extend along the axial direction of the through hole; an odd number M layers of hierarchical spaces are sequentially arranged in each stator slot along the radial direction of the through hole, the Mth layer of hierarchical space is defined as the hierarchical space closest to or farthest from the bottom wall of the stator slot in the M layers of hierarchical spaces, and the Mth layer of hierarchical space in the N stator slots is defined to form an outer layer space; defining hierarchical spaces except for the Mth layer of hierarchical space in the N stator slots to form an inner layer space; the stator winding comprises a plurality of sub-windings which are connected in a star-shaped or angle-shaped manner, each sub-winding comprises a plurality of hairpin coils, only short-distance hairpin coils or long-distance hairpin coils are arranged in the outer-layer space, and only whole-distance hairpin coils are arranged in the inner-layer space. The stator assembly provided by the invention is higher in insulation reliability.

The invention discloses a multifunctional pot, which comprises a base, a pot component, a skim strainer, a heating component, a steam supply component and an exhaust component. The base comprises a mounting tray and a discharge pipe body. The pot component comprises a pot main body, a filtrate ring, a filtrate pipe body and a holding groove; the holding groove comprises an annular base plate and an annular baffle plate; the annular base plate sleeves the outer sidewall of the filtrate ring; and the annular base plate is arranged in a mode of gradually inclining towards the filtrate hole. The skim strainer is arranged inside the filtrate ring and is located between the filtrate hole and the filtrate pipe body. The heating component comprises a heating sleeve and a closing piece. The steam supply component communicates with the first end of the heating sleeve and is used for supplying steam into a steam accommodating cavity. The exhaust component comprises an exhaust pipe body and an exhaust tray. The multifunctional pot, by setting the base, the pot component, the skim strainer, the heating component, the steam supply component and the exhaust component, can avoid the problem of local over-heating when used for heating food materials and soup; and the pot is more uniform in heating and is better in safety property.

The invention relates to a constant-temperature heating type cooker, which comprises a base, a cooker assembly, a residue filtering net, a heating assembly, a steam supply assembly and an exhaust assembly, wherein the base comprises an installing disc and a discharging pipe body; the cooker assembly comprises a cooker body, a liquid filtering ring, a liquid filtering pipe body and a placing groove; the residue filtering net is arranged inside the liquid filtering ring and is positioned between a liquid filtering hole and the liquid filtering pipe body; the heating assembly comprises a heating sleeve and a closing element; the closing element comprises a rotating shaft, a closing sheet and a balancing weight; the rotating shaft is arranged at the outer side wall of the heating sleeve; the closing sheet is connected with the rotating shaft; the balancing weight is arranged at the closing sheet; the steam supply assembly is communicated with the first end of the heating sleeve and is used for supplying steam to a steam accommodating cavity; and the exhaust assembly comprises an exhaust pipe body and an exhaust disc. The constant-temperature heating type cooker has the advantages that through the arrangement of the base, the cooker assembly, the residue filtering net, the heating assembly, the steam supply assembly and the exhaust assembly, the problem of local overheating during food material and soup base heating is avoided; the heating is uniform; and the safety performance is good.

The invention discloses a sand processing cooling system for lost foam casting. The system comprises a processing tank, an isolation baffle plate, linkage shafts and fixed convex bars, wherein an airblower is mounted on the left side of the processing tank; a feeding hopper is mounted on the upper surface of the processing tank; a discharging hole is formed in the surface of the feeding pipe; a water inlet pipe is arranged on the upper surface of the processing tank; the outer side of the isolation baffle plate is mutually connected with an inner wall of the processing tank; an air exhaust pipe and a driving motor are mounted on the right surface of the processing tank; a driving shaft connected with the left side of the driving motor penetrates through a right wall of the processing tank; the two sides of the linkage shafts are both connected with fixed discs; a discharging hopper is mounted under the processing tank. By adopting a sand temperature cooling system for sand processing,air transmission and air transmission treatment on an inner part of the processing tank can be carried out through the air blower and a water inlet pipe, so that air current in the processing tank isincreased, a temperature from the sand surface is conveniently taken away, and a dust raising plate conveniently raises up sand so as to increase contact area of the air and sand grains, and therefore, a heat dissipation effect is improved.

The invention discloses a synchronous belt capable of preventing lithium-ion battery electrolyte corrosion. The synchronous belt comprises a synchronous belt skeleton and a rubber material with whichthe synchronous belt skeleton is wrapped, wherein the rubber material is prepared from, by weight, 100-200 parts of chloroprene, 5-8 parts of sodium hydroxide, 10-30 parts of deionized water, 0.5-2 parts of cellulose acetate butyrate, 1-3 parts of lauryl mercaptan, 2-5 parts of polyoxyethylene lauryl ether, 1-5 parts of catalyst, 2-6 parts of lauryl sodium sulfate, 1-5 parts of wood tar, 5-10 parts of polytetrafluoroethylene, 0.2-0.7 part of graphene oxide, 5-8 parts of lauric acid, 10-15 parts of tetrakis thioperoxydi, 2-5 parts of magnesium oxide and 1-3 parts of spray carbon black. The invention further discloses a preparation method of the synchronous belt. The synchronous belt prepared by using the method is long in service life, capable of meeting requirements for long-term corrosionresistance of the synchronous belt used in a lithium-ion battery processing and recycling device.