217results about How to "Improve temperature consistency" patented technology

The present invention is directed to heat cells that are suitable for incorporation into disposable heating wraps. The heat cells comprise an exothermic composition comprising an absorbent gelling material, wherein the absorbent gelling material provides for improved heat application in the relief of temporary or chronic body aches and pains.

A dispensing unit for dispensing hot, dairy-based beverages has a self-contained refrigerated unit located above a venturi-type emulsification foaming head. The dispensing unit has particular applicability to the dispensation of foamy, hot milk for use in beverages such as cappuccino and nonfoamy, hot milk for use in beverages such as coffee latte, hot chocolate, and other hot dairy-based beverages. The refrigeration unit accommodates a "bag in box" cold milk storage container of the type widely used in food service establishments. The dispensing unit employs a pinch valve that avoids direct contact between the milk and the valve components. The refrigerated milk is stored above the level of the foamer head so that the flow of milk results partially from gravitational force on the milk, and is not totally dependent upon venturi suction created in the foamer head. Also, selective actuation of beverage choice switches generates commands to produce different beverages at different temperatures. This is achieved by raising or lowering the steam temperature from a standby temperature as an immediate response to depression of a selection button. Air utilized in creating a foamy hot milk mixture may be supplied at a positive pressure above atmospheric pressure, rather than merely through venturi suction from the ambient atmosphere. In addition, following the dispensation of each portion of a beverage, the system automatically discharges a quantity of purging water to clean out the air line and air nozzle, so as to avoid contamination of those components by contact with milk flowing through the foamer head.

An extrusion die for extruding plastic material as a tubular film has mututally engaging first and second body members which form an annular extrusion orifice therebetween. One of the body members has main feed grooves in a surface thereof adjacent the other body member and extending in a spiral manner relative to the annular extrusion orifice, and one of the body members has supply grooves in a surface thereof adjacent the other body member for receiving plastic material from one or more extruders. Each supply groove has an end portion adjacent but spaced from an initial portion of a main feed groove, whereby plastic material from the extruder or extruders is received by the supply grooves and forced from the end portions thereof along a passage between the body members and into the initial portions of the spiral feed grooves.

The invention discloses a low-pressure diffusion technology for a crystalline silicon cell. The technology comprises the following steps: (1) a high-temperature oxidation before diffusion; (2) a low-pressure diffusion, namely preparing a PN knot by a sub-step diffusion method; and (3) annealing, namely changing internal pressure to remove impurities. According to the low-pressure diffusion technology, the uniformity between diffusion sheets can be improved; the temperature of a temperature zone in a fire hole is lowered, namely the temperature uniformity of various temperature zones of a diffusion tube is improved; the problem of a great fluctuation of sheet resistance of the fire hole of a diffusion furnace is solved; the service lifetime of a vacuum pump is prolonged; and the production cost of a diffusion procedure is reduced.

In order to reduce the internal friction and performance degradation which are caused by a temperature difference in a battery pack, the invention provides a power battery pack cooling system and an active temperature equalization control method. In a battery pack cooling process, stepped slow rising and slow reduction of a temperature of cooling fluid at an inlet of the battery pack are realizedby judging an average temperature and a maximum temperature difference of various sensors in the battery pack in real time, opening and closing various cooling circuits and regulating rotating speedsof a fan and a water pump, so as to reduce a dramatic temperature fluctuation caused by large temperature difference heat exchange between the cooling fluid at the inlet and the high-temperature battery pack and improve the temperature consistency, the working efficacy and the thermal safety between battery cells in the battery pack.

The invention relates to a partial pressure sintering method for sintering a neodymium-iron-boron magnet. Certain inert gases Ar are filled into various deflation sections in the sintering process, the pressure of the Ar gases inside a furnace is regulated according to blank deflation velocity and vacuum pump system exhaust velocity through vacuum degree control, so that heating sintering is carried out by uniformly deflating under different partial pressures of the Ar gases, and negative pressure is still kept. The partial pressure sintering method disclosed by the invention ensures the consistency and uniformity of magnetic property and saves the sintering time.

The invention discloses a millimeter wave blackbody radiation calibration source with a biconical cavity serial structure, which is cylindrical as a whole and has a cylindrical structure made of metalmaterial. An integrated cavity structure connected in series by a lip, a circular cavity, a transition section and a conical cavity which are all in rounding off from top to bottom is arranged in thecenter of a cylinder, and the opening surface of the cavity is arranged in the center of the top of the cylinder. A cavity inner wall wave-absorbing material coating is made of wave-absorbing material coated on the inner wall of the cavity according to the required thickness. The invention lowers the probability that radiation energy incident from the opening surface is reflected and returned from the opening surface during transmission in the cavity so that the radiation energy is reflected many times in the cavity and absorbed. Through controlling the coating depth, the invention solves theproblem that the consistency of temperatures of blackbody calibration sources is influenced due to overlarge coating depth and poor thermal conductivity while improving the absorptivity of the cavityinner wall of the blackbody radiation calibration source to the radiation energy.

The invention discloses a micro-channel cold plate structure. The micro-channel cold plate structure comprises a substrate and a micro-flowing-channel network processed on the substrate; and the micro-flowing-channel network comprises a shunting structure, a partial micro-channel network and a confluence structure in a combined manner. The micro-channel cold plate structure has the beneficial effects as follows: reasonable flow deploying of a cooling working medium is realized through T-shaped flowing channels, and then heat transfer is strengthened by tree-like and parallel micro channels; finally, energy re-confluence is realized through inverse Y-shaped two-furcation flowing channels, so that high channel distribution uniformity is realized, and the network can be uniformly distributed in the whole to-be-dissipated region; the overall micro-fluid network is in all-parallel-connection way, so that high temperature consistency is achieved; the cooling working medium flows smoothly in the flowing channels, so that low flowing resistance is formed; and furthermore, the micro channels in each group of the partial micro-channel network are arranged in parallel, and the channels are more in branches and high in span, so that the process can be realized conveniently, partial pressure loss can be lowered, and the heat dissipation performance of the micro-channel cold plate can be further improved.

The invention provides a hydrogen gas sensor based on a thermal conduction principle. The sensor comprises the thermistor of a measuring cell, the thermistor of a reference cell, a bridge fixed resistor, a PCB board, a shell and an amplifying circuit, the top of the measuring cell is provided with a porous membrane or a reticular supporter, the reference cell is of a leak-proof structure, and hydrogen gas cannot infiltrate into the reference cell. The thermistor and the bridge resistor are respectively fixed on the upper and lower sides of the PCB board. The amplifying circuit is arranged at the bottom or outside the shell of the sensor. By optimizing the physical structure of the sensor, the invention realizes the self thermal balance of the sensor, inhibits the interference of an external environment, has small and compact structure, and is applicable to general on-site environment for a long time.

The invention provides a thermal management system and method for electric vehicle batteries based on a memory alloy. The thermal management system comprises a battery box, wherein the battery box accommodates a plurality of variable heat transfer coefficient heat collection modules with the same structure, the variable heat transfer coefficient heat collection modules are sequentially arranged side by side to form a variable heat transfer coefficient heat collection unit, and the edge is connected with the inner wall of the battery box through a sliding rail; each variable heat transfer coefficient heat collection module includes two heat collection plates which are arranged side by side and have a certain spacing, the two heat collection plates are provided with a plurality of single batteries arranged side by side therebetween, the end parts of the two heat collection plates are connected through a memory alloy plate, the memory alloy plate is tightly contacted with the corresponding single batteries, the two heat collection plate are further provided with an elastic member therebetween, and the spacing between the two heat collection plate can vary with the size of the memory alloy plate. The thermal management system can automatically adjust the heat dissipation intensity according to the temperature of the battery system, and improve the temperature consistency inside thebattery system at the same time. In addition, the thermal management system is simple in structure and low in energy consumption.

The invention discloses a power battery pack multi-stage heat dissipation system and control method based on coupling of a planar heat pipe, liquid cooling and a phase change energy storage heat conduction plate. The system comprises an electrical system and a cooling system. The electrical system includes a battery module, a temperature sensor, a battery management system, a power supply wire harness, a storage battery and a multi-stage heat dissipation refrigerator control wire. The cooling system comprises multi-stage heat dissipation refrigerators, the phase change energy storage heat conduction plate, the planar heat pipe, a circulating water pipe, a radiator, a water tank, a water pump, and a cooling liquid. A temperature sensor is used to collect the temperature of the battery module and is connected to the battery management system. The water pump, the plurality of multi-stage heat dissipation refrigerators, and the radiator are connected to the storage battery, and the storagebattery provides energy. The water pump, the plurality of multi-stage heat dissipation refrigerators and the radiator are connected to the battery management system through a water pump control wireharness, a multi-stage heat dissipation refrigerator control wire harness and a radiator control wire harness, and are controlled by the battery management system in real time to control overall temperature rise of a power battery pack.

A liquid cooled coldplate has a tub with an inlet port and an outlet port and a plurality of pockets recessed within a top surface of the tub. Each pocket has a peripheral opening and a ledge, the ledge disposed inwardly and downwardly from the peripheral opening. The inlet port and outlet port are in fluid communication with the pocket via an inlet slot and an outlet slot. A plurality of cooling plates are each received by a pocket and recessed within the pocket. Each cooling plate comprises an electronics side for receiving electronics and enhanced side for cooling the cooling plate. The enhanced side of the cooling plate comprises a plurality of pins formed by micro deformation technology. The tub may be formed by extrusion.

The invention provides a ceramic electric heating assembly which comprises a ceramic matrix, heating film resistors, at least two groups of electrodes, screw holes and a protective layer. The heating film resistors are arranged on the ceramic matrix; the electrodes are arranged on the ceramic matrix and are electrically connected with the heating film resistors; the screw holes are formed in the ceramic matrix and are electrically connected with the electrodes; the protective layer covers the outer surfaces of the heating film resistors. The ceramic electric heating assembly has the advantages that the structures of the screw holes are formed in the electric heating assembly, accordingly, braze welding can be omitted during lead wire connection, and the ceramic electric heating assembly is simple in manufacture and low in cost.

The present disclosure provides a temperature control system based on magnetic refrigeration technology, and thermal management system and method for battery pack of electric vehicle. A heat dissipation box is connected with one side of an accommodation box through a pipeline and the other side is connected to form a loop. The heat dissipation box comprises a heat dissipation box body, a pluralityof heat dissipation fins are sequentially sleeved on the outer edge, and an electromagnetic body and a heating pipe are arranged on the inner surface. The accommodation box comprises an outer heat insulating box body and an inner microchannel partition box, the microchannel partition box includes a plurality of accommodation chambers separated by microchannel partitions, At that front and rear wall surface of the box body, a plurality of transverse and longitudinal connected pipelines are arrange inside the box body, A plurality of connecting branch pipes are arranged inside the microchannelseparator, The connecting branch pipe is communicated with the connecting pipe, and the temperature drop of the magnetic fluid coolant flowing out of the radiator box is caused by the magnetocaloric effect of the magnetic refrigerating material, so that the temperature of the magnetic fluid coolant entering the container box from the cold flow pipe can be effectively reduced, and the consistency of the internal temperature of the acted object can be maintained.

The invention discloses a battery module and a battery system adopting the battery module, an electrode terminal is arranged on the end surface of a monomer battery, and a plurality of the monomer batteries are connected in series and/or in parallel through the electrode terminals, wherein the battery module further comprises a metal air duct, the metal air duct is in insulation, heat conduction and connection with the electrode terminals, and the metal air duct is used for reducing or increasing the temperature of the monomer batteries. A heat management structure adopted by the battery module and a heat management system of the battery system can effectively regulate the temperature in the battery module, avoid the inconsistencies in battery performances, and further avoid reducing the service life of the batteries or causing safety accidents.

The invention relates to the technical field of electric automobile power batteries, and provides a battery heat management system realized by using a heat pump technology. The battery heat management system comprises a heat exchanger in contact with a battery core surface, and a compressor, a radiator, a radiating fan, an expansion valve, a controller, a closed-loop pipeline and a multi-channel valve, wherein the controller is used for judging whether a battery needs cooling or heating; the multi-channel valve is arranged on the closed-loop pipeline, and the valve is controlled by the controller; the heat exchanger is in physical contact with the battery core surface and a cooling pipeline; throttling and pressure reduction are realized through the expansion valve, and meanwhile the temperature of liquid is reduced; the radiator and the radiating fan are used for radiating gas of pipelines and converting the gas into low-pressure liquid together. According to the principle of phase change heat dissipation, the battery is cooled and heated efficiently through the conversion between the liquid and the gas so as to realize the transfer of heat, so that the temperature of the battery is effectively controlled in an ideal temperature range, quick cooling and quick cooling of the battery are realized, and the temperature uniformity of the battery is guaranteed.

The invention provides a liquid cooling rack of a miniature array device. Flow dividers are connected with an external cooling liquid source through self-sealing bayonet liquid connectors. Main flow channels of the flow dividers are provided with branch flow channels for dividing cooling liquid to module cold plates and power cold plates. The module cold plates are communicated with the flow dividers through blind insertion liquid connectors. A mounting space for a receiving and dispatching module is formed between the adjacent module cold plates. The two power cold plates are fixedly arranged above and below the integration of the module cold plates respectively. The power cold plates are connected with a digital processing module integrated liquid cooling structure through self-sealing blind insertion liquid connectors. The liquid cooling rack has the functions of complex flow channel organization, heat dissipation and force bearing; through a compact and ingenious structural layout and flow channel design, heat dissipation of the receiving and dispatching module with high heating flux density is achieved through limited liquid cooling resources; meanwhile, effective heat management of multiple functional modules with differentiated heat dissipation requirements is achieved, and the miniaturization requirement for platform loading is met.

The invention relates to the technical field of electric vehicle power battery pack thermal management, in particular to an air and coolant coupled electric vehicle battery pack thermal management system. The system is combined with vehicle-mounted single batteries to be installed on a vehicle body, connected with an electronic control unit (ECU) of the vehicle and composed of a battery box, a phase change material, a battery box end cover, battery cooling modules, an air inlet duct guiding housing, air outlet duct guiding housings, thermocouples and a speed regulating fan; and one thermocouple and the speed regulating fan are installed at an air inlet of a battery box end cover, the thermocouples are installed at air outlets of the battery end cover, the thermocouples are connected with the electronic control unit (ECU) of the vehicle, and the ECU is connected with the speed regulating fan and controls the rotating speed of the speed regulating fan. According to the system, the temperature consistency between the surfaces of the vehicle-mounted single batteries and the vehicle-mounted single batteries is improved, and the thermal exchange speed between air and coupling cooling plates is increased; and then the high-temperature thermal dissipation capacity and the low-temperature thermal preservation capacity of the system are improved, and the good thermal dissipation effect can be always achieved under different working conditions.

The invention aims to provide a double-shaft double-motor ship ammonia-electricity hybrid power system with a fuel cell. The system comprises an ammonia fuel engine, a first reversible motor, a secondreversible motor, a third reversible motor, a diesel generator set, a storage battery, a super capacitor, a fuel cell, a propeller, a liquid ammonia storage and supply device, a power transformationdevice, a ship power grid, a ship load, a whole ship cooling system and an exhaust gas recirculation system. Hybrid propulsion of the ammonia fuel engine and the motor and coordinated power supply ofthe diesel generator set and the energy storage unit can be achieved. Meanwhile, multi-stage utilization of cold energy of the energy storage unit and the engine is achieved, waste gas of the fuel cell supplements gas for the waste gas turbine, the gas inlet efficiency is improved, ship energy consumption is reduced, the whole ship efficiency is improved, and the application range of the system iswidened.

The invention relates to an infrared radiation static dryer. The infrared radiation static dryer comprises a rack and a driving device, wherein the rack is provided with a plurality of layers of staggered convey net belts, the separated convey net belts drive in opposite directions, the driving device drives the convey net belts to transmit, the inlet of the dryer is opposite to the front end of the first layer of convey net belt and is connected with a feed convey net belt, the feed convey net belt is provided with an even leaf mechanism, infrared radiation heating devices are arranged above the work surfaces of the convey net belts and are installed on a fixed plate, and the heating devices are uniformly arranged in the transverse and longitudinal directions of the convey net belts. The infrared radiation static dryer adopts infrared radiation static drying and adopts a plurality of layers of staggered convey net belts, the infrared radiation heating devices are arranged above the work surfaces of the convey net belts, so that tea leaves are dried at consistent temperature, are guaranteed to be dehydrated and have color and luster, and are not easy to break, and part of the fragrance is not brought away.