244 results about "Heat spreading" patented technology

A heater assembly for a haircare appliance comprising a hair contacting member 42, a heating element 40 to heat the contact member and a support member 54 in thermal contact with the heating element and contact member which has a thermal diffusivity of at least 1.0 mm2 / s. The support member 54 may be a polymer foam such as silicone foam. A heat spreading layer with a thermal resistance no greater than 22 Kelvin / Watt may be used. The heating elements may extend across 95% of the length of the hair-contacting surface. A sensor system may be provided to increase the temperature as the appliance moves from a root to a tip of a tress of hair. The heating may be based on a time relating to the length of tress. The support member may be flexible to allow deflection.

According to the battery pack thermal runaway prevention method and device, the storage medium and the computer equipment, when thermal runaway of the battery pack is prevented, the thermal runaway temperature rise rate curve graph and the normal temperature rise rate curve graph corresponding to the specification data of the battery pack are obtained to serve as the standard judgment basis for predicting the thermal runaway risk of the battery pack. For example, in the thermal runaway prevention process, the actual temperature rise rate of the battery pack is obtained through real-time monitoring, the difference value between the actual temperature rise rate and the corresponding thermal runaway temperature rise rate in a thermal runaway temperature rise rate curve graph is determined, and when the difference value is smaller than a safety threshold value, the risk trend type is determined according to the actual temperature rise rate; and performing risk assessment on the battery pack based on the normal temperature rise rate curve graph by adopting the corresponding risk assessment strategy, and performing risk management and control on the battery pack with the thermal runaway risk according to the assessment result, so that the battery pack with the thermal runaway risk can be intervened in advance; and the reaction time and the heat spreading problem of thermal runaway of the battery pack are effectively controlled.

A method for assembling a liquid cooling assembly includes: providing liquid cooling blocks each defining an internal fluid conduit; providing a first heat spreading base defining at least one first pocket; and providing a second heat spreading base defining second pockets, a number of second pockets being greater than a number of the at least one first pocket. When assembling a first liquid cooling assembly: at least one liquid cooling block is selected to mate with the first heat spreading base; and the selected at least one liquid cooling block is inserted at least partly into a corresponding one of the at least one first pocket. When assembling a second liquid cooling assembly: at least two liquid cooling blocks are selected to mate with the second heat spreading base; and the selected at least two liquid cooling blocks are inserted at least partly into corresponding ones of the second pockets.

Thermal barrier assemblies are provided for inhibiting the transfer of thermal energy inside a traction battery pack. An exemplary thermal barrier assembly may include a heat spreader fin arranged within a cell stack and configured to provide a path for directing thermal energy into an enclosure structure rather than through the thermal barrier assembly to a cold side of the cell stack. The heat spreader fin may extend to a location that is either between an insulating layer of the thermal barrier assembly and the enclosure structure or between a grouping of battery cells of the cell stack and the enclosure structure.

The invention discloses an intelligent control method and system for real-time treatment of marine waste gas. The method comprises the following steps: collecting a ship waste gas component concentration signal and a sea condition dynamic parameter, performing vortex intensity extraction on the waste gas component concentration signal to identify a vortex flow characteristic, extracting a flow field disturbance coefficient from the sea condition dynamic parameter, and constructing a waste gas-environment interaction field; performing heat trace tracking based on the interaction field to position a high-temperature pollution source, constructing a heat propagation path and mapping a waste gas heat flow network; performing turbulence analysis on the heat flow network to identify a vortex breaking point, determining an optimal processing position and calibrating a processing axis; recombining the control parameter chain based on the processing axis, determining a steady-state processing interval and generating an adaptive adjustment matrix; the adjustment matrix and temperature gradient data are fused to recognize a phase change latent heat region, condensation release energy is extracted to construct an energy recovery tensor, and a gradient processing scheme is generated; a feedback curve is formed by monitoring the execution deviation, a waste gas treatment execution instruction is generated, and continuous and stable operation of ocean waste gas treatment is ensured.

The invention provides a method, a system and related equipment for inhibiting thermal runaway and thermal spread of a battery, the temperature rise rate and / or the single voltage of each single battery are / is monitored, and when the temperature rise rate and / or the single voltage of one single battery are / is determined to meet a spontaneous heating condition, it is indicated that the single battery enters a spontaneous heating stage; at the moment, the temperature and electrochemical information of the single battery are obtained, the target discharge rate is determined based on the electrochemical information and the temperature of the single battery, and the battery is controlled to discharge at the target discharge rate. The target discharge rate is applied to the battery to discharge the battery, so that the reaction concentration of the interface reaction of the negative electrode electrolyte can be reduced, the thermochemical heat production of the interface reaction can be reduced, the total heat production of the whole battery is reduced, the temperature of the battery is reduced, and the generation of thermal runaway and heat spreading of the battery are inhibited.

The invention relates to the technical field of energy efficiency control, in particular to a central cabinet power environment monitoring integrated system and an energy efficiency optimization control method, and the system comprises an electrical parameter acquisition module, an environment joint detection module, a temperature rise identification module, an abnormity joint judgment module and a result feedback module. According to the method, a phase deviation sequence is extracted through a periodic electrical parameter waveform, a humidity-phase abnormal section is constructed by combining humidity trend difference at two ends of a path, a heat transfer direction is positioned, a temperature rise focusing section is screened, a path numbering sequence is further compared with node distribution consistency, and fusion identification and positioning of an abnormal area are completed. The synchronous analysis capability of electrical and environment anomalies is improved, path-level screening of humidity accumulation and heat spreading trends is realized, the identification range and response precision of potential hidden dangers in a power supply link are enhanced, the local fault diffusion risk is avoided, rapid feedback and dynamic joint judgment of multi-node power environment changes are supported, a response link is shortened, and the reliability of the power supply link is improved. The operation and maintenance efficiency is improved.

The utility model discloses a module-free square battery, which belongs to the technical field of square batteries, and comprises a box body, a bottom protective plate is arranged below the box body, and a heat insulation material and a square battery are arranged in the box body; the box body is composed of an edge beam, a cross beam and a liquid cooling plate assembly, an opening is formed in one face of the box body, the end of the cross beam is connected with the edge beam, the bottom of the cross beam and the bottom of the edge beam are connected with the liquid cooling plate, exhaust holes are formed in the plate face of the liquid cooling plate, and the edge beam is provided with an exhaust valve; a flow channel is arranged on the plate face of the liquid cooling plate, the liquid cooling plate and the bottom protection plate are fixedly connected in the flow channel, and a smoke exhaust channel is arranged between the liquid cooling plate and the bottom protection plate. According to the utility model, high-temperature flue gas is discharged out of the box body along a specific channel, so that heat influence on other batteries and parts is avoided, heat spreading can be avoided, and the safety of a system is ensured.

The invention provides a thermal insulation material and a battery pack. The thermal insulation material comprises cellulose aerogel and an organic phase change material dispersed in the cellulose aerogel; wherein the cellulose aerogel is obtained by reacting bacterial cellulose with a cross-linking agent. According to the thermal insulation material provided by the invention, the cross-linking agent is used for modifying the bacterial cellulose aerogel, the pore diameter of the cellulose aerogel is greatly improved, the cellulose aerogel is used as a supporting material of an organic phase change material, the thermal insulation material with ultrahigh energy storage efficiency is prepared, and the thermal insulation material can be applied between battery cells when the heat generated by a monomer battery cell is too high. Heat is effectively absorbed, and heat spreading of the battery cells caused by direct heat conduction between the battery cells between the modules is prevented.

The invention belongs to the technical field of battery safety, and particularly relates to a phase change heat insulation baffle, a preparation method and application thereof, and a soft package battery module. The invention provides a phase-change heat-insulation barrier plate. The phase-change heat-insulation barrier plate comprises a phase-change heat-insulation material and a packaging film for packaging the phase-change heat-insulation material, the phase-change thermal insulation material comprises a substrate material, and a phase-change material and a flame-retardant material which are adsorbed on the substrate material, the substrate material comprises a silicon dioxide nanofiber felt and a supporting material; the phase-change material comprises one or more of silica sol, alumina sol and a saturated calcium chloride solution, and the flame-retardant material comprises a phosphorus-containing flame retardant. The phase-change thermal insulation material contains the phase-change material and the thermal insulation substrate, has a very high phase-change enthalpy value, plays a good role in blocking heat spreading through thermal insulation of the thermal insulation material and phase-change energy consumption of the phase-change material during thermal runaway, and can delay the heat spreading time or inhibit the heat spreading.

The invention provides a high-safety flexible pole piece, a preparation method and a flexible lithium ion battery, the pole piece comprises a current collector and a coating arranged on the surface of the current collector, the coating comprises a flexible isolation structure and a plurality of electrode units, the flexible isolation structure constructs a plurality of accommodating areas isolated from each other on the surface of the current collector, the number of the electrode units is multiple, and the flexible isolation structure is arranged in the accommodating areas. The plurality of electrode units are respectively and independently arranged in different accommodating areas. According to the invention, accurate prevention and control of thermal runaway are realized through the electrode structure design of partition isolation and a material system with multiple hydrogen bonds synergistic effect. The electrode is divided into independent units by the flexible isolation structure, so that heat spreading is effectively blocked; and a hydrogen bond network formed by the hydroxyl-containing comonomer I, PI, PET and hexaphenoxy cyclotriphosphazene significantly enhances the interface stability and flame retardant efficiency of the electrode and the isolation structure, and improves the intrinsic safety of the battery while ensuring the flexibility of the battery.

The embodiment of the invention relates to the field of heat dissipation, and provides a heat dissipation device, a vapor chamber and electronic equipment, the heat dissipation device is integrated with the vapor chamber and a liquid cooling module, the vapor chamber comprises an evaporation area and a condensation area, the liquid cooling module comprises a cooler, a radiator and a liquid cooling pipe, and the vapor chamber and the liquid cooling module can act synergistically. The heat dissipation performance and the temperature equalizing performance of the heat dissipation device can be improved, and the conflict between the ultrathin design and the high-performance requirement of the vapor chamber is solved. Moreover, at least part of the liquid cooling module is arranged on the periphery of the first end area of the vapor chamber in a surrounding mode along the first plane, the first end area of the vapor chamber is at least part of the area, except for at least part of the end area of the condensation area, of all the end areas of the vapor chamber, and therefore at least part of the end area of the condensation area can be exposed in the air. Enough space can be provided, at least part of the end area of the condensation area is provided with the liquid injection pipe so as to inject the cooling medium into the vapor chamber, and finally manufacturing of the vapor chamber and the heat dissipation device is completed.

The invention belongs to the technical field of energy storage equipment, and particularly relates to immersed direct-cooling energy storage equipment which comprises a side cooling structure, the side cooling structure is in contact with the side wall of a battery module, and a plurality of liquid inlet runners and liquid outlet runners are arranged in the side cooling structure. Each liquid inlet flow channel and each liquid outlet flow channel are wound along the side wall of a battery cell in the battery module one by one; when the direct cooling unit works, a refrigerant flows into the plurality of liquid inlet runners through the liquid inlet pipe, sequentially passes through the two sides of each battery module, and then the refrigerant in the plurality of liquid inlet runners flows into the plurality of liquid outlet runners and flows back along the two sides of each battery module; the box body is filled with immersion liquid, and the immersion liquid immerses the side cooling structure and the battery module; the invention aims to provide the immersed direct-cooling energy storage equipment which is good in temperature uniformity, high in heat dissipation efficiency and capable of completely eradicating heat spreading.

A semiconductor package includes an interposer having a first principle surface and a second principle surface opposite the first principle surface. One or more semiconductor dies are disposed on the first principle surface of the interposer, and are electrically connected with the second principle surface of the interposer by electrical vias passing through the interposer. A heat spreading lid disposed over the one or more semiconductor dies. A thermally conductive material is disposed between the one or more semiconductor dies and the heat spreading lid. The thermally conductive material thermally couples the one or more semiconductor dies and the heat spreading lid. In some examples, the heat spreading lid may be a thermoelectric cooler. In some examples, the thermally conductive material may be a mixture of a gel and a liquid metal.

The invention relates to the technical field of industrial furnace control, and discloses a pit furnace multi-zone coupling heating method which comprises the following steps: acquiring a heat propagation characteristic model from a plurality of heating zones to a plurality of temperature sensing points of a pit furnace offline; according to a preset target temperature profile and the heat propagation characteristic model, prospectively planning a reference power output sequence of each heating area; monitoring the temperature data of the plurality of temperature sensing points on line in real time, and constructing an actual temperature field profile; comparing the actual temperature field profile with the target temperature profile at the current moment, and calculating a field form deviation function; and generating a correction vector for correcting the reference power output sequence based on the field form deviation function. By establishing a double-layer control architecture combining feedforward planning and feedback correction, a traditional passive control mode based on error tracking is converted into an active thermal field construction and adjustment mode based on model prediction.

An electronic assembly with heat spreading coating is having a PCB carrying conducting traces heat producing electronic components. An electrically isolating polymeric coating is applied over the electric the traces and the heat producing electronic components. The electrically isolating polymeric coating conforms with an irregular structure of the PCB. A heat spreading layer is applied over the polymeric coating. The heat spreading layer comprises: at least one heat spreading zone selected from the group consisting of: a plurality of graphene nano-platelets, a plurality of graphene particles, a plurality of boron-nitride particles, a plurality of graphene flakes, a plurality of boron-nitride flakes, at least one graphene sheets, and combination thereof; and a binder, wherein the electrically isolating polymeric coating adheres to the PCB and covers the electric conducting traces and the heat producing electronic components, and the heat spreading layer conforms to the irregular structure of the polymeric coating.

The application discloses a kind of fresh stewed bird's nest cold chain transport process temperature field monitoring method and system, belong to cold chain monitoring technical field.Through heat inertia pulse test, heat capacity and thermal resistance are obtained, which are respectively taken as node attribute and edge attribute;Optimize sensor distribution based on the principle of random walk entropy minimization;Construct a dynamically updated directed weighted heat propagation path graph;Using sparse deconvolution combined with system impulse response function matrix, separate event excitation and identify abnormal events;Linearize the heat balance inverse problem in the rolling time domain, reconstruct the product temperature sequence and heat flow vector, calculate the equivalent heat damage dose, and generate the solidified causal directed acyclic graph evidence chain.The above scheme integrates heat inertia into the graph model, realizes event and heat response separation, risk quantification and full-process traceability, effectively improves the accuracy and reliability of cold chain temperature monitoring.

The invention relates to the technical field of tail gas treatment, in particular to a tail gas treatment structure of a movable diesel generating set. Comprising a supporting seat and further comprises a cyclone separator, a first barrel, a flow guide part, a second barrel, a third barrel, a vibration part, a driving part and the like. Through cooperative cooperation of the cyclone separator, the impingement plate, the flow guide part, the vibration part and the driving part, in the tail gas treatment process, the cyclone separator separates and collects large particles, the impingement plate enables airflow to uniformly enter DOC for oxidation, the flow guide part sweeps high-temperature gas to the end face of the DPF to form uniform heating, and the tail gas treatment effect is improved. The vibration part transmits vibration to the DPF through the vibration transmission rod so that a soot layer can be loosened, and the driving part drives the flow guide part to rotate and the vibration part to work at the same time. Therefore, the problems that in the prior art, an ash-carbon composite layer formed by ash accumulation hinders regeneration heat transfer, and a soot layer is compacted compactly under the low-load working condition, so that regeneration starting is difficult, and heat spreading is slow are systematically solved.

The invention discloses a large complex central air conditioner control method, system and equipment and a medium, and the method comprises the steps that an atrium heat source area, a first refrigeration area and a second refrigeration area are obtained; determining a heat propagation path of the large complex based on the internal space characteristics, the heat source parameters, the first temperature data and the third temperature data, wherein the heat propagation path comprises a vertical path and a horizontal path; determining a heat source direct influence area and a heat source indirect influence area in the first refrigeration area; respectively calculating a first thermal disturbance diffusion index and a second thermal disturbance diffusion index based on the internal space characteristics, the temperature change characteristics, the heat source parameters and the environmental influence factors; and a first area temperature compensation coefficient is determined based on the first thermal disturbance diffusion index, a second area temperature compensation coefficient is determined based on the second thermal disturbance diffusion index, and an air conditioner control scheme is generated according to the first area temperature compensation coefficient and the second area temperature compensation coefficient. The operation control efficiency of the air conditioning system in the large complex can be improved.

The invention relates to the technical field of semiconductor packaging, in particular to a multi-chip packaging structure of an integrated heat dissipation framework, which comprises a packaging structure, the packaging structure comprises two external ventilation pipes, the outer walls of the two external ventilation pipes are fixedly connected with two external support legs, and hot air ventilation pipes are mounted at the bottom ends of the two external ventilation pipes. A plurality of external fixing frames are installed on the other sides of the outer walls of the two external ventilation pipes at equal intervals, a plurality of top end packaging plates are installed at the top ends of the external fixing frames, and packaging chips are packaged at the top ends of the top end packaging plates; heat dissipation and ventilation structures are arranged on the inner walls of the two external ventilation pipes; and a driving structure is arranged on one side of the external supporting leg close to one side. The multi-chip packaging structure has the advantages that the dual purposes of stable multi-chip packaging and efficient heat dissipation are achieved, the packaging integration level and the working stability of the chips are considered, and the working requirements of a high-power and high-density multi-chip module are met.

A heat spreading element is provided and includes first and second pyrolytic graphite sheets (PGSs) arranged to form an opening between respective proximal ends thereof and a weaved PGS. The weaved PGS includes a first section disposed above the first PGS, a second section disposed below the second PGS and a weaved section extending between respective proximal ends of the first and second sections and through the opening.

Provided are high quality metal-nitride, such as aluminum nitride (AlN), films for heat dissipation and heat spreading applications, methods of preparing the same, and deposition of high thermal conductivity heat spreading layers for use in RF devices such as power amplifiers, high electron mobility transistors, etc. Aspects of the inventive concept can be used to enable heterogeneously integrated compound semiconductor on silicon devices or can be used in in non-RF applications as the power densities of these highly scaled microelectronic devices continues to increase.

The utility model relates to a battery pack pressure relief and exhaust structure in the technical field of battery manufacturing, which comprises a box body, a battery cell monomer and a cross beam, the cross beam and the battery cell monomer are arranged in the box body, the cross beam is positioned on one side of the battery cell monomer, an exhaust passage is arranged in the cross beam, and an explosion-proof valve on the battery cell monomer is communicated with the exhaust passage of the cross beam. By means of the arrangement, the influence of high-temperature gas on the single battery cells during pressure relief is effectively avoided, heat spreading is prevented, and meanwhile it is guaranteed that the gas is rapidly exhausted out of the box body during pressure relief.

The invention provides a porous aluminum-based wick and a manufacturing method and application thereof. The porous aluminum-based wick comprises a heat conduction substrate and a wick structure, wherein the wick structure is arranged on the heat conduction substrate; the wick structure comprises a microporous matrix, a macroscopic channel and a nano surface layer, the microporous matrix is made of aluminum alloy, and adjacent pores are communicated with each other to form a continuous capillary network; the macroscopic channel is of a periodic three-dimensional network structure and is arranged in the microporous matrix in a penetrating manner; and the nano surface layer is arranged on the surface of the microporous substrate and the wall surface of the macroscopic channel. Due to the integrated design of the multi-scale pores, the capillary force and the permeability of the wick are effectively improved, the heat transfer resistance is reduced, and the heat dissipation efficiency is enhanced. The manufacturing method is simple, rapid and low in cost, and the obtained wick can be widely applied to phase-change heat dissipation devices such as flat heat pipes and vapor chambers and meets the heat dissipation requirements of high-heat-flux electronic devices.

The utility model discloses an efficient building heat preservation material containing graphene, and relates to the technical field of building materials, the efficient building heat preservation material containing graphene comprises a heat preservation wallboard, a starting piece, a board connecting piece and a corner connecting piece, the heat preservation wallboard is sequentially adhered with a base layer, a first heat insulation layer, a sound insulation and shock absorption layer, a second heat insulation layer and an outer protection surface layer from inside to outside; the first heat insulation layer and the second heat insulation layer comprise a heat insulation base layer, a graphene modified middle layer and a porous heat insulation layer, the first heat insulation layer and the second heat insulation layer form a double-layer heat insulation system, and a nanometer micropore heat insulation material of the heat insulation base layer limits heat conduction of gas; a graphene sheet layer in the graphene modified middle layer and nano ceramic particles have a synergistic effect to reduce the heat transfer rate, the porous heat insulation layer prevents multiple heat propagation modes by utilizing a porous structure and filling aerogel, and the structure greatly improves the heat insulation efficiency of the heat insulation wallboard.

The invention discloses a display module and a display device. The display panel comprises a first surface and a second surface which are oppositely arranged along a first direction; the display panel further comprises a plurality of driving signal lines and a plurality of conductive wires, each conductive wire comprises a first wire branch and a second wire branch which are electrically connected, the driving signal lines and the first wire branches are arranged on the first surface, the second wire branches are arranged on the second surface, the first wire branches are electrically connected with the driving signal lines, and the second wire branches are electrically connected with the driving signal lines. And the first wiring branch part is electrically connected with the second wiring branch part. A vapor chamber is further arranged on the second surface of the display panel; in the first direction, the vapor chamber and the second wiring branch are at least partially overlapped. An anti-reflection structure is further arranged in the display panel, the anti-reflection structure at least comprises a first anti-reflection structure, and the first anti-reflection structure and the second wiring branch are not overlapped in the first direction. By arranging the anti-reflection structure, the reflectivity of different areas in the display panel can be effectively balanced, and the ink color consistency of the display panel is improved.

The application discloses a laminated heat dissipation structure continuous forming process, which comprises the following steps: after a metal material belt is continuously conveyed by a step-by-step mode and enters between an upper die and a lower die of a step-by-step continuous punching die, T-shaped holes, pilot holes, a plurality of first convexes, a plurality of second convexes, first profile holes, second profile holes, through-hole holes and connecting structures are sequentially formed on the metal material belt by continuous punching of the step-by-step continuous punching die; after the above features are formed in one forming area of the metal material belt, blanking is performed by a blanking station to finally form heat dissipation fins; each formed heat dissipation fin falls into a blanking channel, and the heat dissipation fins are connected by the connecting structures to form a laminated heat dissipation structure. The application improves production efficiency, simplifies the production mode, and does not need manual assistance in the forming process, thereby reducing production cost.

The present invention relates to a battery pack comprising: a battery pack frame; and a plurality of battery modules arranged to be spaced apart from each other in a width direction inside the battery pack frame, in which the battery pack frame includes: a bottom plate; a side plate; a chamber part which is provided inside the bottom plate and in which a coolant is filled and stored without an empty space; and an outlet through which the interior of the chamber part communicates with the exterior of the battery pack frame.

The invention discloses a composite material battery box and a preparation method thereof, and belongs to the technical field of power batteries. The composite material battery box comprises a box body and an upper cover, ablation-resistant coatings are arranged on the inner walls of the box body and the upper cover, and the ablation-resistant coatings are selected from melting type ablation-resistant coatings, resin-based ablation-resistant coatings or ceramic-based ablation-resistant coatings; the melting type ablation-resistant coating comprises fused quartz and / or glass materials, the resin-based ablation-resistant coating comprises silicone rubber, phenolic aldehyde and / or epoxy materials, and the ceramic-based ablation-resistant coating comprises an RCG coating material; according to the utility model, an ablation-resistant coating material is coated inside the battery box and is used for preventing harm caused by factors such as short circuit and high temperature. When the battery cell burns, the ablation-resistant coating material not only can improve the combustion temperature of the battery box, but also can effectively reduce the oxygen content and delay the heat spreading speed, thereby providing precious time for safe evacuation of passengers, and improving the protection effect and the heat safety of the battery pack.

A method of evaluating a convective heat transfer amount using a device for evaluating a convective heat transfer amount, the method including providing the device for evaluating a convective heat transfer amount, the device including a first cell, a second cell, a heater, and an upper plate, performing operation (a) of igniting the first cell and calculating a conductive heat transfer rate from the first cell to the second cell, and performing operation (b) of igniting the first cell, measuring a heat propagation time, the heat propagation time being a time from ignition of the first cell to a time when the second cell reaches a limit heat quantity, and calculating the convective heat transfer amount from the first cell to the second cell based on the second heat propagation time and the conductive heat transfer rate.