15results about How to "Reduce temperature peaks" patented technology

The embodiment of the invention aims to provide a chip packaging structure. The circuit board comprises a chip assembly, a substrate and an electrical connection structure between the chip assembly and the substrate. Wherein the electrical connection structure comprises a conductive adhesive, and the conductive adhesive is arranged between the chip assembly and the substrate and is respectively connected with electrical contact points of the chip assembly and the substrate; wherein the phase change material and the conductive adhesive intersect to form a heat dissipation structure. By using the conductive adhesive as a connection means between the chip and the PCB, the embodiment of the invention can realize a thinner connection layer, thereby significantly shortening a signal transmission path, reducing connection impedance, and improving the quality and speed of signal transmission. And moreover, the phase-change material is introduced to optimize heat dissipation, so that heat can be quickly absorbed and released in a local high-heat-flux area, and the temperature peak value in the package is reduced.

The invention discloses a staggered vein-shaped embedded micro-channel radiator, and belongs to the field of radiators. According to the radiator, N inflow branches and N + 1 outflow branches are etched on a substrate, N is larger than or equal to 2, a plurality of forked branches of 45 degrees are arranged between the inflow branches and the outflow branches, and a heat dissipation working medium flows in from the N inflow branches, passes through the forked branches and then flows out after being converged in the N + 1 outflow branches. Therefore, by adopting the vein-shaped micro-channel structure, the micro-channel space is reduced, and the heat dissipation efficiency is improved.

The invention discloses ship lock large-volume air-entraining concrete and a pouring vibration exhaust method, and belongs to the technical field of concrete.The ship lock large-volume air-entraining concrete is prepared from 130-160 kg / m < 3 > of cement, 50-70 kg / m < 3 > of fly ash, 50-70 kg / m < 3 > of mineral powder, 600-750 kg / m < 3 > of sand, 1300-1500 kg / m < 3 > of gravel, 3-5 kg / m < 3 > of a water reducing agent, 90-130 kg / m < 3 > of water and 3-4 kg / m < 3 > of an air-entraining anti-cracking agent according to the mixing proportion; a nano-scale super absorbent material is adopted as an air-entraining anti-cracking agent, internal humidity is maintained and a temperature peak value is reduced through water absorption and slow water release, and corresponding nano micropores are reserved in a microstructure through water release and polymer shrinkage, so that the effects of enhancing mechanical properties and resisting cracking after air entraining are achieved.

The utility model discloses a super-adiabatic pure oxygen burner which comprises a burner shell penetrating through and fixedly connected to the wall of a hearth, the peripheral wall, located on the upper side of the wall of the hearth, of the burner shell is wrapped with refractory materials in the hearth, and an ignition rod and an annularly-arranged fuel spray pipe are arranged in the burner shell. The control module is electrically connected with the adjusting execution module, the adjusting execution module is connected with the ignition rod and the annularly-arranged fuel spray pipe through two fuel pipes, a first-stage super-adiabatic combustion reaction disc is fixed to the inner wall of the upper end of the combustor shell, a second-stage super-adiabatic combustion reaction disc is arranged above the first-stage super-adiabatic combustion reaction disc, and a second-stage super-adiabatic combustion reaction disc is arranged above the second-stage super-adiabatic combustion reaction disc. And the second-stage super-adiabatic combustion reaction disc is fixedly connected with the hearth wall through a plurality of adjustable fire-resistant supporting rods, and an oxygen inlet is formed in the lower end of the side wall of the combustor shell. According to the super-adiabatic pure oxygen burner, the performance of energy conservation and emission reduction of the burner is improved, the heat efficiency of the burner is obviously improved, and generation of CO can be restrained easily.

This invention proposes a structure, assembly method, and a laminated pole synchronous motor for improving the heat dissipation capacity of the damping strip in a laminated pole synchronous motor. It belongs to the field of laminated pole synchronous motors. The invention solves the problem of how to effectively improve the heat dissipation capacity of the damping strip in a laminated pole synchronous motor. The heat dissipation structure consists of multi-layered fins welded to the damping strip of the laminated pole synchronous motor. A graphene coating is sprayed onto the fins and damping strip. The damping strip has a hollow structure filled with phase change material. One end of the damping strip is fixed to a damping ring, and the other end is connected to the pole core. Heat dissipation fins are provided at the bottom of the damping ring. This invention employs a composite heat dissipation system of "internal phase change flow heat transfer + fins + damping ring heat dissipation fins": internally, the phase change cycle of the phase change material promotes uniform heat distribution; externally, the heat dissipation fins on the surface of the damping strip and the integrated heat dissipation fins of the damping ring form a three-dimensional heat dissipation network, significantly accelerating the transfer of heat from the damping winding to the external environment.

The application discloses a modular integrated primary-secondary fusion ring network box and relates to the technical field of smart grids. The modular integrated primary-secondary fusion ring network box comprises a main box body, an auxiliary mechanism, a U-shaped plate and a storage tank. A plurality of strip-shaped partitions are fixed in the storage tank, and the shape of the strip-shaped partitions is wavy. The same end surface of the strip-shaped partitions is in contact with the inner wall of the U-shaped plate. The shape of the inner wall bottom of the storage tank is matched with the shape of the strip-shaped partitions. The U-shaped plate is additionally arranged on the shell of the main box body. A plurality of phase change strips are arranged in the storage tank. The auxiliary mechanism is arranged. The phase change strips can absorb the heat transferred by the U-shaped plate and store the heat, so that the temperature peak value in the shell of the main box body is reduced, the heat in the main box body can be discharged in time by the ring network box standard cooling fan, and the service life of the power electronic components in the primary-secondary fusion ring network box is prolonged.

The invention provides a battery pack anti-aging fast charging control method and device, equipment and a medium. The method comprises the following steps: establishing a multi-physical field coupling system model of a lithium ion battery module; the multi-physics field coupling system model comprises an electrochemical equivalent circuit sub-model, a total parameter thermal network sub-model and a battery module aging sub-model; with reduction of parasitic energy consumption of the system as a target, a hybrid heat management strategy in which an active liquid cooling pump and a passive phase change material cooperate is constructed; and determining a current calculation strategy according to available calculation resources of the current controller, if the calculation power is low, selecting a heuristic strategy to determine the charging current of the future step, and if the calculation power is high, selecting an MPC strategy to determine the optimal current sequence of the future step. According to the control method, the electric-thermal-aging multi-physical field model can be coupled in real time, the advantages of active liquid cooling and passive phase change materials are organically combined, and dynamic balance among the charging speed, thermal safety and service life attenuation is achieved through an efficient algorithm.

The application discloses a battery pack heat dissipation structure intelligent design method and device and a storage medium. The method comprises the following steps: determining a heat dissipation structure design domain, dividing a grid, and setting a design variable; loading a load on a current structure according to an assembly scheme, solving a contact pressure distribution, and obtaining an interface thermal resistance distribution according to a pressure-thermal resistance characteristic of a heat conduction interface material; performing thermal analysis by taking the interface thermal resistance distribution as a boundary condition, and obtaining a power device temperature peak value; calculating a sensitivity of the temperature peak value to each design variable, wherein a direct influence caused by a material thermal conductivity change and an indirect influence caused by a structure stiffness change through a contact pressure and an interface thermal resistance change are simultaneously considered; iteratively updating the design variable under a constraint condition according to the sensitivity until a convergence condition is met, and outputting a heat dissipation structure geometric shape. The application can comprehensively consider an influence of an assembly contact state on heat transfer performance in heat dissipation structure optimization, and improves accuracy of heat dissipation structure design.

The application relates to a smart park energy operation and maintenance management method based on big data applied to the technical field of energy operation and maintenance management, wherein through the design of a fault prediction unit and a power consumption redistribution unit, power consumption equipment can be reselected at least twice, so that the power supply mode of the power consumption equipment is maintained in a safe and stable state, compared with the prior art, the occurrence of unplanned power outage is greatly reduced, and the economic loss caused by the unplanned power outage to the production activities of the smart park is effectively reduced; in cooperation with the setting of a contact precooling unit, the switch contact of a static switch (STS) can be pre-cooled in advance before power supply switching, the temperature peak value of the switch contact after switching can be effectively reduced in the vertical direction, the cooling time of the switch contact after switching can be reduced in the horizontal direction, the stable switching of the static switch (STS) to the power supply mode is effectively maintained, the smart power supply in the park is effectively maintained, and the stable operation of the power consumption equipment in the park is ensured.

The utility model discloses a kind of power module, electronic equipment and vehicle, the power module includes: power device body;Phase change store, in the first direction of the power module, the phase change store is located in the side of the power device body;The storage space of the phase change store is isolated with the power device body arrangement, and the phase change store is used to accommodate phase change medium.According to the power module of the utility model, phase change store can absorb and store a large amount of heat in short time, heat conduction capacity is higher, improves the short-time overcurrent capacity of power module, reduces temperature peak value, reduces temperature fluctuation, and prolongs the service life of power module.

This utility model relates to a temperature-controlled tea processing and roasting machine, including a temperature-controlled chamber, of which two chambers are provided; it also includes a ventilation chamber disposed between the two temperature-controlled chambers, with a ventilation component inside the ventilation chamber, and a sliding component inside the temperature-controlled chamber. A roasting component is mounted on the sliding component, which is used to move the roasting component out of the machine. The ventilation component is used to transfer excess heat from the temperature-controlled chamber currently roasting to the other temperature-controlled chamber for preheating the tea. A heat recovery pipe is installed on the left side of the temperature-controlled chamber to recover excess heat from the preheating temperature-controlled chamber. A heat supply pipe is connected to the rear end of the temperature-controlled chamber, and a diverter plate is connected to one end of the heat supply pipe extending into the temperature-controlled chamber. This new model, through the symmetrical layout of the two temperature-controlled chambers, allows excess heat generated during high-temperature roasting in one chamber to be transported to the other chamber via the ventilation component for preheating the tea, reducing subsequent energy consumption, while simultaneously controlling the discharge of heat to stabilize the temperature.

The present invention provides a low-nitrogen premixed flue gas internal circulation gas burner, which is small in size, compact in structure, does not backfire, and has stable combustion. The burner comprises a shell having an air passage, a central gas pipe in the front end of the air passage, each premixing nozzle is arranged at the front end of a premixing nozzle, the rear end of each premixing nozzle is communicated with an air transition pipe and a gas transition pipe, the other end of each air transition pipe is communicated with the premixing air passage, and the other end of each gas transition pipe is communicated with the premixing gas passage; the conical flame tube is coaxial with the central gas tube and is located at the front of the air passage; there is an annular gap between the conical flame tube and the outlet of the air passage, and a plurality of premixing nozzles are evenly distributed at the annular gap; each outer ring nozzle is arranged on an outer ring gas pipe surrounding the outer circumference of the shell; the central gas pipe, the premixing gas passage, and the outer ring gas passage are connected to the gas source through an air supply pipeline provided with a regulating valve; the premixing air passage is communicated with a compressed air source; and the air passage is communicated with the outlet of the blower.

The invention relates to a preparation method of a functional concrete admixture with high impermeability and crack resistance. According to the technical scheme, a proper amount of deionized water and a prepared GO-PCs solution are sequentially added into a reaction container, stirring is started, then a certain amount of organic silicon modified acrylic emulsion, vinyl acetate-acrylic emulsion, polyvinyl alcohol, sodium gluconate, glycerol, xanthan gum and a defoaming agent are sequentially added, and the time interval of adding each raw material is 2 minutes; after all the materials are added, continuously stirring for 30 minutes, and then adding the air entraining agent; and continuously stirring for 5 minutes to finish the preparation of the product. The anti-permeability concrete has the beneficial effects that the anti-permeability performance of the concrete is greatly improved from traditional P6-P12 to P20 or above, and the limit anti-permeability performance can exceed P40; product application is simple, material putting is simpler and more convenient, and production and construction are more facilitated; compared with a traditional product, the construction performance, the mechanical performance and the durability of the concrete are all improved to different degrees, and the anti-cracking capacity is obviously improved.

The invention relates to hydration heat inhibition particles for concrete and a preparation method thereof. The hydration heat inhibition particles are prepared by wrapping 65-75 wt% of phase change material particles with 25-35 wt% of shell layer composite material powder; the phase-change material particles are composed of 20-40 wt% of a low-temperature phase-change material and 60-80 wt% of a high-temperature phase-change material, the low-temperature phase-change material and the high-temperature phase-change material are subjected to high-temperature melting and uniform mixing, ice water is dripped into the mixture through a dripping nozzle for cooling granulation to prepare the phase-change material particles, then the phase-change material particles are placed in a disc granulator, and the shell composite material is added for granulation. The hydration heat inhibition particle for concrete prepared by the invention is uniform in shell thickness, high in structural stability, high in strength, good in sealing property, excellent in sphericity degree and good in concrete compatibility, and can tolerate 100 times of heat cycles at 20-80 DEG C without cracks; after being doped into concrete, the concrete admixture state can be improved, the temperature gradient in the concrete hydration period is remarkably reduced, and the cracking risk is remarkably reduced.

The present application relates to a motor and electric control integrated system, belonging to the technical field of new energy vehicles, including a motor sub-assembly, which includes an outer shell and a motor located in the outer shell, and a first water channel is formed between the outer shell and the motor; an electric control sub-assembly, which includes a rear shell detachably connected to the outer shell, and an IGBT module electrically connected to the motor is arranged in the rear shell, and a second water channel for cooling the IGBT module. The motor sub-assembly and the electric control sub-assembly can be produced as separate assembly modules, and there is no need to add a plate to close the rear shell separately, which reduces the cost, and the first water channel and the second water channel are independently arranged on the outer shell and the rear shell, respectively, the first water channel cools the motor, and the second water channel cools the IGBT module on the rear shell, the cavities of the first water channel and the second water channel are independent, the heat does not interfere with each other, the overall heat exchange effect is good, the temperature rise of the motor and the IGBT module is small and the temperature peak is small, which is conducive to the continuous normal operation of the motor and the IGBT module.