43results about How to "Meet heat dissipation requirements" patented technology

The invention relates to a preparation method of a diamond micro-channel heat sink for superhigh heat flux cooling, and belongs to the field of semiconductor device cooling. The method comprises the steps: employing the special substrate technology and the improved CVD preparation technology for preparing a high-quality, no-crack and super-thick diamond self-supporting membrane; controlling the surface roughness of the super-thick diamond membrane through the mechanical grinding and polishing according to the requirements of a thermal contact interface; employing the unique laser processing technology for achieving the fixing of the structure size of the super-thick diamond membrane, carrying out the micro-channel engraving on the surface through a laser micro-beam flow, obtaining a diamond micro-channel heat exchanger with the size being matched with the groove type, and enabling the diamond micro-channel heat exchanger to meet the design requirements of a high heat flux heat exchangefor dissipation. The micro-channel heat sink can be used for the heat dissipation of a high-power-consumption electronic device of spatial loads, such as a phased array radar, a satellite, and a large-scale spacecraft.

The invention discloses a method for low-temperature rapid sintering of alumina-based transparent ceramics with high thermal conductivity through hot pressing. The method takes alumina as raw materials, employs silicon dioxide and lithium carbonate as sintering aids, and uses a spark plasma sintering method to prepare alumina-based transparent ceramics with high thermal conductivity. Compared with traditional alumina ceramics, the alumina-based transparent ceramics provided by the method of the invention have obvious advantages that: the ceramics have substantially improved thermal conductivity, thus meeting the thermal dissipation requirements of ceramic substrates and enabling high power LED to work normally; also, the difficult problem of excess sintering temperature of pure alumina ceramics is solved; and rare earth-doped alumina-based transparent ceramics prepared by the formula and method of the invention have a sintering temperature of only 1370DEG C.

The invention discloses a soft package lithium ion battery module for an electric vehicle. The soft package lithium ion battery module comprises soft package lithium ion battery units, a bottom plate, an upper cover and fastening bolts, wherein each soft package lithium ion battery unit comprises a soft package lithium ion battery and a heat radiating plate, the heat radiating plate is basically in a rectangular structure, and is composed of at least one basically rectangular box body, one slot extends from each of end parts of three side surfaces of the box body, the soft package lithium ion battery is arranged in the box body of the heat radiating plate, and the soft package lithium ion battery and the box body integrally form the soft package lithium ion battery unit, and at least two soft package lithium ion battery units are overlapped along the vertical direction and are fixedly installed between the bottom plate and the upper cover through the fastening bolts to form the soft package lithium ion battery module. The battery units can be flexibly expanded to bring the convenience for arrangement. Slots of adjacent heat radiating plates form an air duct, thus the heat radiation of each battery is facilitated. The soft package lithium ion battery module provided by the invention is compact in structure, convenient to maintain and easy to expand, has a function of protecting the batteries, is convenient to electrically connect, and good in heat radiation property because the battery units are mutually isolated. The soft package lithium ion battery module has a remarkable function for prolonging the service life and improving the energy density of a lithium battery pack of the electric vehicle, and is suitable for industrialized production.

The invention provides a frequency converter comprising a first box body, a second box body covering the first box body, and a driving plate arranged between a first top plate arranged at the first box body and a second base plate arranged at the second box body. A plurality of first electrolytic capacitors are arranged at one side, approaching the second box body, of the driving plate; and a second ventilation hole is formed at the place adjacent to the first electrolytic capacitors. First through holes where the first electrolytic capacitors pass and a first ventilation hole corresponding to the second ventilation hole are formed in the second base plate. A first air flue port and an air outlet communicated with the first air flue port are formed in the first box body; and the first air flue port protrudes from the first top plate and penetrates the second ventilation hole and the first ventilation hole. External air flows through the first electrolytic capacitors and then flows out of the air outlet through the first air flue port. According to the invention, an independent heat radiation air flue is provided for the first electrolytic capacitors arranged on the driving plate, so that a problem of heat radiation of the first electrolytic capacitors can be solved. Moreover, the frequency converter has advantages of small size and low cost.

A high-performance silicon carbide semiconductor field effect transistor structure disclosed by the present invention comprises a field effect transistor body, the field effect transistor body comprises a field effect transistor base and a field effect transistor outer cavity, and the field effect transistor outer cavity is internally buckled on the top surface of the field effect transistor base. A plurality of groups of cabling racks are arranged between the field effect transistor base and the field effect transistor outer cavity, three rotating grooves are formed in one side of the field effect transistor base, first hinged shafts are arranged in the three rotating grooves respectively, and T-shaped connecting frames are rotationally connected to the first hinged shafts. The wiring board is provided with the wiring groove, and the wiring groove is arranged to be of a horn-shaped structure with a large left end opening and a small right end opening, so the wiring groove can achieve the integrated installation of a plurality of wires, enables the internal structure assembly of the field effect transistor body to be more reasonable, reduces the fault rate of the field effect transistor base body, and the service life of the field effect transistor base body is prolonged.

The invention provides an air conditioner heat dissipation control method, an air conditioner heat dissipation system and an air conditioner. The air conditioner heat dissipation system comprises a water tank, a water pump, a heat dissipation water pipe and a heat exchange water pipe which are communicated in sequence, wherein the water tank is used for containing condensate water generated by an indoor coil pipe, and the heat dissipation water pipe is connected with an electrical control component and used for conducting water cooling heat dissipation on the electrical control component. A heat exchange water pipe is matched with the outdoor coil pipe and used for conducting heat exchange on the outdoor coil pipe. The air conditioner heat dissipation system can conduct water-cooling heat dissipation on the electrical control component and conduct heat exchange on the outdoor coil pipe in sequence. According to the air conditioner heat dissipation control method, the air conditioner heat dissipation system and the air conditioner, on one hand, the cooling capacity in the low-temperature condensate water is fully utilized, and loss and waste of the cooling capacity are reduced; on the other hand, the condensate water can preferentially carry out water-cooling heat dissipation on the electrical control component, heat dissipation can be effectively carried out on the electrical control component in time under some extremely high temperature conditions, and the heat dissipation capacity requirement of the electrical control component is fully met.

The invention discloses a preparation method of an all-diamond micro-channel radiator with a manifold type fluid path, and belongs to the field of heat dissipation of high-power devices. The manifold type all-diamond microchannel is composed of a packaging cover plate, a shunting substrate, a microchannel substrate and a packaging bottom plate. The preparation method comprises the following steps: firstly, a high-quality crack-free diamond self-supporting thick film is prepared through a CVD preparation process of secondary nucleation and dynamic adjustment of a deposition surface; the surface is flattened through mechanical grinding and polishing; then, the size of a rectangular micro-channel in diamond plates is shaped by adopting a special laser processing technology; at the same time, a welding surface is metalized to improve the welding performance;and finally, the diamond plates are welded together in sequence through a vacuum brazing technology, a manifold type all-diamond micro-channel heat exchanger with the qualified size and groove type is obtained, and the manifold type all-diamond micro-channel heat exchanger meets the heat dissipation design requirement of a high-heat-flux heat exchanger. The micro-channel heat exchanger can be used for effective heat management of high-power advanced equipment such as high-power communication and navigation satellites, directional high-energy weapons and wide bandgap semiconductor radars.

The invention discloses a double-pipe radiating pipe for a radiator. An inward depression is formed in the middle of one side of the radiating pipe, a row of holes are formed in the top of the depression, and the radiating pipe is divided into an upper pipe and a lower pipe with B-shaped sections by the depression. The radiating efficiency, the bearing strength and the anticorrosive performance of the double-pipe radiating pipe can be improved.

The invention discloses a packaging structure of a crimping type dual-core GCT. The structure sequentially includes a metal tube cover, an anode molybdenum sheet, a dual-core GCT chip, a cathode molybdenum sheet, an inner gate kit, an outer gate kit and a metal tube seat which are crimped from up to down, on the outer circle surface, an upper ceramic cup is arranged between the inner gate kit andthe outer gate kit, and a lower ceramic cup is arranged between the inner gate kit and the outer gate kit and the metal tube seat. The structure is advantaged in that the inner gate kit and the outergate kit are connected and matched through a groove on an annular insulation seat, dual-gate current signals are mutually isolated and led outside a tube casing and are connected with a driving circuit board, the integral structure is compact, thermal and electrical reliability is high, and the structure completely satisfies practical requirements of the dual-core GCT.

The invention discloses a specially-shaped clamping piece flap wheel. The specially-shaped clamping piece flap wheel comprises a circular base body, wherein an axle hole is formed in the center of thecircular base body; toothed holes which are spaced at equal distance are uniformly distributed in the periphery of the circular base body; an abrasive cloth clamping piece is embedded into each toothed hole; the abrasive cloth clamping pieces are formed by superposing abrasive cloth one by one, and are bonded and fixed to the toothed holes through adhesive. The specially-shaped clamping piece flap wheel has the advantages that: firstly, the abrasive cloth clamping pieces are distributed at the periphery of the circular base body, and are spaced and fixed in an embedded mode, so that the abrasive cloth clamping pieces can freely deform and cling to workpieces while various specially-shaped workpieces (for example, workpieces used for processing rubber gloves and grooves among fingers) areprocessed if the abrasive cloth clamping pieces are spaced by certain distance, and therefore, grinding effect is good; and secondly, after the abrasive cloth clamping pieces are spaced, heat dissipation during grinding can be improved, the flap wheel is continuously processed and production efficiency is improved.

The invention discloses a manufacturing method of a power battery, the power battery and an automobile. The power battery comprises a battery module and a cooling medium heat dissipation unit, a phasechange material layer and a heat conduction pouring sealant layer are arranged in the battery module, and the manufacturing method comprises the following steps: A, determining physical parameters ofthe phase change material layer and the heat conduction pouring sealant layer; B, judging whether physical parameters of the phase-change material layer and the heat-conducting pouring sealant layerare qualified or not: the judgment formula is QB-QDis = cm[delta]T and QDis = Q1 + Q2 + Q3 + Q4, calculating Q1, Q2, Q3 and Q4 through the physical parameters of the phase-change material layer and the heat-conducting pouring sealant layer and heat dissipation characteristics of the cooling medium heat dissipation unit, and substituting Q1, Q2, Q3 and Q4 into the formula; C, if the temperature rise delta T is within the qualified range, manufacturing the power battery according to the determined physical parameters of the phase change material layer and the heat conduction pouring sealant layer; if the temperature rise delta T is not within the qualified range, the physical parameters are readjusted. The power battery manufactured by adopting the manufacturing method disclosed by the invention can meet the heat dissipation requirement of the battery, and is relatively good in heat dissipation performance.

The invention relates to a six-layer-wall-thickness strengthened type radiating pipe. Five-time continuous bends (1) are arranged between two ends of two opposite side walls (3) of the radiating pipe, and adjacent bending edges are tightly attached. Because the end part of the radiating pipe adopts a five-continuous-bending structure to form a six-layer-overlapping structure which is tightly attached, the structural strength of two ends of the radiating pipe is greatly enhanced, and the bearing strength is improved.