75results about How to "Short heat transfer path" patented technology

The invention provides a heat radiation assembly and an electric device, wherein the heat radiation assembly comprises: a screening element which is arranged with a through hole thereupon and is in electrical connection with ground copper of PCT board, the PCT board being equipped with heat radiation electrical elements; a heat tube which is positioned on the through hole, the heat tube being in electrical connection with the screening element, together, the heat tube, the PCT board and the screening element constituting an electromagnetic screen cover which can hold a heat radiation electrical element; an elastic thermal interface material which is arranged between the heat tube and the heat radiation electrical element and is cemented to the heat tube and the heat radiation electrical element. In the technical solution herein, the through hole on the screen element cements the thermal interface material on the heat radiation electrical element and the heat tube, which enables heat of the heat radiation electrical element to be transmitted to the heat tube via thermal interface material, thus reducing heat resistance of the heat radiation assembly and shortening heat transmission path between the heat radiation electrical element and the heat tube.

The invention relates to a steam turbine generator provided with an axial-radial ventilating and cooling system, which belongs to the technical field of cooling of a large air-cooling steam turbine generator and aims to improve the heat dissipation capacity of a stator winding of the large air-cooling steam turbine generator. A plurality of non magnetic-conducting distance rings are additionally provided on the basis of the ventilating and cooling system of a traditional steam turbine generator, one non magnetic-conducting distance ring is arranged at a cold air outlet of each radial ventilating duct in a cold air area to realize sealing, four sectionalized baffle plates are arranged on each stator tooth on each intermediate stator core, two axial air holes are arranged on each stator tooth on the intermediate stator core, the axial air holes axially run through along the stator teeth, the two axial air holes are arranged on each stator tooth along the radial direction, the position of each axial air hole on the stator tooth corresponds to the winding position of the stator winding, and two sides of each axial air hole are provided with two sectionalized baffle plates along the peripheral direction of a stator in a mirror symmetrical way. The steam turbine generator provided with the axial-radial ventilating and cooling system is used for cooling the steam turbine generator.

The invention provides a composite thermal interface material of orientated pored graphene foams and a low-melting-point alloy. At normal temperature, the low-melting-point alloy exists in pores of the graphene foams in a solid manner; at working temperature, the low-melting-point alloy is molten and filled into pores of heat conduction interfaces, and the low-melting-point alloy can be prevented from overflowing by the graphene foams; the low-melting-point alloy is an indium-bismuth-tin-gallium alloy; the melting point of the low-melting-point alloy is within 40-70 DEG C; the graphene foams are of a pored structure parallel to a heat conduction direction. After the low-melting-point alloy is filled, the heat conductivity in the heat conduction direction can be greatly improved.

The invention discloses a large power LED structure adopting COB packaging and belongs to the technical field of optoelectronic devices. The large power LED structure includes a radiator, and a LED chip structure and a packaging layer which are arranged on the radiator. The radiator is characterized by electrical isolation. The large power LED structure, compared with current LED structures, removes an insulation layer, a metal substrate, and a heat conduction silica gel layer, shortens a heat transfer path, improves heat radiation performances, and reduces chip junction temperature. According to the invention, the packaging layer of the large power LED structure has an undulated surface of protrusions or/and indentations, which effectively increases the efficiency of light extraction. According to the invention, the radiator of the large power LED structure has a surface which is provided with grooves, which further shortens the heat radiation path and increases heat radiation performances. According to the invention, the large power LED structure has low manufacturing cost and simple structure, and is conducive to large scale mass production.

This invention is about the decomposition method of compound, especial about the method for depositing charcoal and carbide. The conducting layer is made up of tungsten filament, molybdenum filament and graphite layer; through the conducting layer the physical field is adjusted and controlled. We put charcoal / charcoal combined material body into the chemical gas phase depositing furnace, where the depositing temperature is controlled between 600deg.C and 1100deg.C. The carbon hydrogen gas is filled as reaction gas, while Ar or N2 is used as dilution gas. The concentration of the carbon hydrogen gas is from 5% to 100%, and the flow of the reaction gas should be between 0.2 and 1.2 square meters per hour.square meters. If you choose this invention, the densification speed of the carbon / carbon combined material can be increased, and the producing time can be reduced. You can adjust and control the structure of the thermal decomposition charcoal, and the density and uniform is good. Also, you can reduce the producing cost.

The invention discloses a battery module heat conduction structure and gluing method. The battery module heat conduction structure comprises a cell component and a U-shaped shell, wherein the cell component is accommodated in the U-shaped shell; heat-conducting glue is filled into a gap between the cell component and the U-shaped shell. The gluing method comprises the step of coating glue on the cell component or the U-shaped shell before the cell component is inserted into the U-shaped shell. According to the structure and method, the heat-conducting aluminum plate is cancelled, the heat conducting path is composed of the heat-conducting glue and the aluminum shell; the heat conducting path is reduced; and compared with traditional schemes, the structure is more conductive to heat conduction of the cell, and is effectively reduced in cell temperature.

The invention discloses a motor with high heat dissipation efficiency. The motor comprises a shell, a rotor and a stator which are arranged in the shell as well as a front cover and a rear cover whichare arranged at the two ends of the shell, a cooling channel is formed in the outer wall surface of the stator and the inner wall of the shell, an inlet communicated with one end of the cooling channel is formed in the front cover, and an outlet conducted with the other end of the cooling channel is formed in the rear cover; multiple convex edges which extend along the axial direction of the stator and are spaced and arranged along the circumference are formed on the outer wall surface of the stator, a groove is formed between any two adjacently arranged convex edges, and the grooves form anS-shaped tank body which extends along the circumference of the stator and fluctuates up and down along the axial direction of the stator; and a vacancy is formed at positions corresponding to the convex edges on the inner wall surface of the shell, and any two adjacent grooves are conducted by virtue of the vacancy. The motor disclosed by the invention is short in thermal transmission path, largein heat dissipation area and high in heat dissipation efficiency.

The invention relates to a liquid cooling system and a liquid cooling method thereof, belongs to the technical field of phased-array antennas, and solves a problem that the temperature of an antenna array surface of a phased-array antenna in the prior art rises to influence the performance of the antenna because the heat flux density of the antenna array surface is very high. The liquid cooling system comprises an intelligent microcontroller, a liquid cooling source, a liquid inlet pipeline, a liquid return pipeline and a liquid cooling plate. The intelligent microcontroller is used for controlling the working state of the liquid cooling system; the liquid cooling source is used for providing a cooling liquid required for cooling and heat exchange; the liquid inlet pipeline is used for injecting the cooling liquid into the liquid cooling plate; the liquid return pipeline is used for recovering the cooling liquid subjected to heat exchange in the liquid cooling plate; and the liquid cooling plate is in contact with the phased-array antenna so that cooling and heat dissipation of the phased-array antenna are realized.

The invention discloses a heat collection plate of a solar energy flat plate collector. The heat collection plate of the solar energy flat plate collector comprises a heat collection plate body, wherein the heat collection plate body is internally provided with at least two cavities which are mutually parallel, the cavities and the heat collection plate body are integrally molded to form mutually-parallel tubular flow channels, and the upper surface of the heat collection plate body is coated or plated with a selective absorbing coating. The heat collection plate body is an extrusion forming aluminum alloy heat collection plate body, the cross sections of the tubular flow channels are square, rectangular, circular or oval. The two sides of the heat collection body are respectively provided with a connecting port capable of splicing the two adjacent heat collection plate bodies together. The connecting ports on the two sides of the heat collection plate body are respectively a connecting bulge and a connecting notch, or the connecting ports on the two sides of the heat collection plate body are respectively an upper connecting hook and a lower connecting hook. The heat collection plate of the solar energy flat plate collector has the advantages of simple structure, low cost, high heat exchange efficiency and long service life.

The invention discloses a battery matching a VDA module. The battery comprises an aluminum plastic film package and a battery laminate packaged in the aluminum plastic film package, wherein a batterypositive electrode tab and a battery negative electrode tab on the battery laminate extend out of the two ends of the aluminum plastic film package; the two ends of the aluminum plastic film package form a first top sealing edge and a second top sealing edge respectively corresponding to the battery positive electrode tab and the battery negative electrode tab; the first top sealing edge is provided with chamfered structures at the end corners on the two sides of the battery positive electrode tab; and the second top sealing edge is provided with chamfered structures at the end corners on thetwo sides of the battery negative electrode tab. The battery is optimized in the length dimension when distributed in a prescribed VDA module by providing the chamfered structures on the top sealing edges, thereby improving the capacity and the specific energy of the battery and improving the cruising ability of the electric vehicle..

The invention discloses a prestressed actively-coolable artillery pipe made from a composite material. The prestressed actively-coolable artillery pipe comprises an artillery pipe body and an artillery tail, wherein the artillery pipe body is externally provided with a carbon fiber composite material reinforcement layer and comprises a steel lining pipe, the steel lining pipe is externally provided with steel interlayer pressure-bearing spacer bars, the gap between the lining pipe and the carbon fiber composite material reinforcement layer is a cooling channel, the cooling channel is providedwith a cooling liquid inlet and a cooling liquid outlet, the inlet is connected with a cooling liquid storage tank through a pipeline provided with a pump, and the outlet is connected with the coolingliquid storage tank through a pipeline provided with a radiator. The carbon fiber composite material reinforcement layer is wound around the outside of the steel interlayer pressure-bearing spacer bars. The weight of the artillery pipe can be effectively decreased, and the high temperature produced by the artillery pipe due to shooting can be also effectively reduced.

The invention discloses a multi-layer ceramic-wood composite heating floor tile which comprises a ceramic tile layer. A wood layer is arranged on the back face of the ceramic tile layer. A heating layer is arranged between the ceramic tile layer and the wood layer. The heating layer comprises a heating chip and a positive and negative electrode connector led out of the heating chip. A wire outletslot is formed in the back face of the wood layer. The heating floor tile is easy and rapid to install and maintain and is installed in the same way as an ordinary floor rapidly and easily, floor heating is realized after the floor tile is laid, and the floor tile is an independent unit and can be replaced conveniently and rapidly.

The invention discloses a semiconductor optical fiber coupling laser and an optical fiber laser. The semiconductor optical fiber coupling laser comprises an optical module, a cold plate and a cover plate, the cover plate and the cold plate are used for packaging the optical module by adopting a cold plate direct pumping (DPoC) technology and a one-plate multi-pump (MPoC) technology, a tube shell packaging structure of a conventional pumping module is canceled, the cost, and the weight and the size of the semiconductor optical fiber coupling laser are reduced. Meanwhile, the heat transfer path of the semiconductor laser single tube is shortened, the junction temperature of the semiconductor laser single tube is effectively reduced, the reliability of the laser is improved, the service life of the laser is prolonged, and high-integration and high-power output of the semiconductor optical fiber coupling laser is achieved; a semiconductor optical fiber coupling laser using the DPoC technology and the MPoC technology serves as a pumping source, meanwhile, an active optical fiber is wound around a cold plate, heat dissipation is conducted on the active optical fiber through the cold plate, the cost, the weight and the size of the optical fiber laser are greatly reduced, and high-integration and high-power output of the optical fiber laser is achieved.

The invention provides a solar steam generation device which has the beneficial effects of being good in heat collection effect, stable in performance and durable. The solar steam generation device comprises a header (2) and heat collection tubes (16) connected with the header (2). The header (2) is provided with at least one heat exchange tube (11), the heat exchange tubes (11) enter inner tubes (7) of the corresponding heat collection tubes (16) in sequence, and the steam outlet ends (18) of the heat exchange tubes (11) are located inside or outside the header (2). The inner tubes (7) are provided with heat transfer fins (5), and the cross section of each heat transfer fin (5) is in an arc shape or a W shape. If the cross section of each heat transfer fin (5) is in the arc shape, the outer surfaces of the arc-shaped parts are provided with first grooves (19) and second grooves (20) for installing the heat exchange tubes (11); and if the cross section of each heat transfer fin (5) is in the W shape, the W-shaped parts each comprise two wings and a middle portion, the wings abut against the walls of the inner tubes (7), and the heat exchange tubes (11) are arranged at the middle portions. The parts, located in the header (2), of the heat exchange tubes (11) are provided with heat insulation bodies (12) used for isolating the parts from heat insulation materials (13) with which the header (2) is filled.

The invention provides a vapor-liquid phase flow heat transfer module. The vapor-liquid phase flow heat transfer module comprises at least one evaporator, at least one evaporator pipe, at least one heat exchanger and at least one radiator pipe, wherein each evaporator is internally provided with a first cavity filled with a first working medium; each evaporator pipe is provided with a first end, asecond end and a condensation section located between the first end and the second end, and the first end and the second end communicate with the first cavity of the corresponding evaporator to forma loop of the first working medium; each heat exchanger is internally provided with a heat exchange cavity and further provided with a first side face and a second side face which are used for attachment of the condensation section of the corresponding evaporator pipe; and each radiator pipe communicates with the heat exchange cavity of the corresponding heat exchanger and at least one radiator, and allows a second working medium to flow to form a loop of the second working medium.

The invention discloses a power module integrated with a radiator. The power module integrated with the radiator comprises an insulation substrate, wherein the insulation substrate is provided with a chip set. The power module integrated with the radiator is characterized in that a lower portion of the insulation substrate is provided with a radiator base, the radiator base comprises a radiation medium inlet and a radiation medium outlet, and a radiation medium enters the radiator base from the radiation medium inlet, contacts with the bottom portion of the insulation substrate and flows out from the radiation medium outlet. The power module integrated with the radiator realizes integration of the power module and the radiator, a heat conduction silicone grease layer is omitted, heat transmission paths are reduced, the radiation medium can realize direct heat exchange with a metal layer below the insulation substrate, a secondary welding layer, a bottom board layer, a heat conduction silicone grease layer and a radiator of a traditional mounting structure are saved, not only can the structure be simplified, but also thermal resistance of the power module is reduced, and reliability of the power module is improved.

The invention relates to the field of cooling devices, and discloses a radiator for a thyristor element and an electric locomotive rectifier. The radiator comprises a skeleton and a plurality of main cooling fins, wherein the skeleton comprises a base part and a plurality of support leg parts extending from a first side surface of the base part; each of the plurality of support leg parts comprises two end part support leg parts adjacent to two ends of the first side surface; a second side surface, opposite to the first side surface, of the base part is used for being in contact with the thyristor element; and the main cooling fins extend between two adjacent support leg parts along the direction departing from the base part from the skeleton. According to the radiator for the thyristor element disclosed by the invention, short heat transfer paths from the thyristor element to the cooling fins are achieved; relatively large area of the cooling fins is ensured; and the radiator is convenient to assemble and disassemble, simple in structure and low in manufacturing cost.

The invention discloses a high-power chip heat dissipation structure and a preparation method thereof, and relates to the technical field of microelectronic heat dissipation. The heat dissipation structure of the high-power chip comprises a heat dissipation assembly located on the high-power chip, wherein the heat dissipation assembly and the high-power chip are bonded together; the heat exchange piece located between the high-power chip and the heat dissipation assembly can lead cooling liquid to a heating junction area on the front face of the high-power chip through the heat dissipation assembly, the effective heat exchange area between the high-power chip and the heat dissipation assembly is increased through the heat exchange piece, and the heat exchange capacity is improved; the heat dissipation assembly is connected to the heat exchange piece, so that heat generated by the chip is dissipated and taken away through the front face of the chip, a heating junction area of the high-power chip can directly exchange heat with cooling liquid, the heat generated by the chip is directly conducted to the cooling liquid and then taken away through circulating flow of the cooling liquid, the heat transfer path is shortened, the heat dissipation capacity of the chip is improved, and the service life of the chip is prolonged. And the signal shielding requirement of the high-power chip and the heat dissipation requirement of the chip are met.

The invention discloses a preparation method of the built-in carbon fiber electric-heating laminate flooring and a wooden floor thereof. The preparation method specifically comprises the steps that 1, high-density fiber board base materials are prepared first, positional holes are drilled on the high-density fiber board base materials, and the surfaces of the high-density fiber board base materials are coated with glue, electric poles are mounted, multiple pieces of carbon fiber papers are laid on the surfaces of the high-density fiber board base materials; 2, the surfaces of the carbon fiber papers are coated with glue, then surface decoration layers are glued on the surfaces of the carbon fiber papers; 3, next cold press, hot press and stress balance are in sequence carried out, and abrasion resistant papers and wood grained papers are in sequence pasted on the surfaces; 4, next thickness defining, all around groove-and-tongue, and reflective film coating are in sequence carried out, and finally after the surface coating, the finished product is obtained. The preparation method of the built-in carbon fiber electric-heating laminate flooring and the wooden floor thereof have the advantages of being heat dissipating, quick in temperature rising, low in thermal loss, energy-saving and environmentally friendly, space-saving, clean and comfortable, intelligent in temperature control and fixed point heating and the like.

The invention discloses a composite phase change material driven by light energy and magnetic energy. The composite phase change material comprises an MXene matrix; the magnetic metal oxide is doped on the inner surface and the outer surface of the MXene substrate; and the phase change material is compounded in the MXene matrix. The composite phase-change material has high-efficiency light energy and magnetic energy dual-drive energy conversion performance.

The invention provides an infiltration type cooling power battery pack, an infiltration type cooling method and a vehicle, the power battery pack comprises a battery box, a plurality of cross beams are arranged in the battery box side by side at intervals, the cross beams divide the internal space of the battery box into a plurality of accommodating cavities, and battery modules are arranged in the accommodating cavities; the side wall of the battery box is defined by two relatively parallel first side walls and two relatively parallel second side walls, and the cross beam is parallel to the second side walls; gaps are reserved between the two ends of the cross beam and the first side walls on the two sides, and a first flow channel and a second flow channel are formed along the two first side walls; a liquid inlet close to the first flow channel and a liquid outlet close to the second flow channel are respectively formed in the two second side walls. Compared with liquid cooling, the infiltration type cooling system provided by the invention is shorter in heat transfer path, larger in cooling area and higher in cooling efficiency, and can play a better cooling effect from the perspectives of thermal management and thermal runaway.