14results about How to "Reduce heat spread" patented technology

The utility model provides a battery pack. The battery pack comprises: a battery box having a first mounting cavity; the battery module is mounted in the first mounting cavity, the battery module comprises a plurality of battery cells which are arranged in sequence, an anti-explosion valve is arranged at the top of each battery cell, a pressure discharge channel is arranged in the battery box, and the pressure discharge channel is communicated with the outside of the battery box; and the gas guide structure is located above the battery module, the gas guide structure comprises a gas guide channel and a plurality of openings communicated with the gas guide channel, the plurality of openings are arranged corresponding to at least part of the explosion-proof valves, and the gas guide channel is communicated with the pressure discharge channel. The battery pack provided by the technical scheme of the utility model can effectively reduce the probability of heat diffusion.

The invention relates to the technical field of nonferrous metal material manufacturing, in particular to an efficient cost-reducing preparation method of a high-heat-resistance, high-conductivity and high-strength copper-chromium-niobium material, which comprises the following steps: S1, powder screening; s2, electron beam printing, including entity printing, outer contour printing, thermal compensation scanning and heat preservation; the preparation method of the copper-chromium-niobium material is developed on the basis of reducing the cost; the powder with the larger particle size range is used for reducing the raw material cost, the higher layer thickness is used for reducing the printing time cost, thermal compensation scanning of the outer contour is used for optimizing the surface of a part to reduce the subsequent machining cost, thermal compensation heat preservation after printing is completed is used for reducing the cost of subsequent recharging heat treatment, and the heat preservation efficiency is improved. The tensile strength of the prepared blank is larger than 380 Mpa, the hardness is larger than 110 HB, the conductivity is larger than 47 Ms / m, the process is simple and stable, and batch production is easy.

The embodiment of the invention provides an ultrasonic transducer and an ultrasonic instrument, and belongs to the technical field of medical cosmetology. The at least two piezoelectric ceramic pieces are sequentially arranged along a first direction, a concave focusing surface is formed on the same side of each piezoelectric ceramic piece along a second direction, the focusing surface of each piezoelectric ceramic piece is focused to form a sound wave focusing area, and the sound wave focusing area of each piezoelectric ceramic piece is linearly arranged; the limit positions of the two ends of the linearly arranged sound wave focusing area are arranged in the first direction, the sound wave focusing area is located between the limit positions of the two opposite ends of the corresponding piezoelectric ceramic piece in the third direction, and the straight line perpendicular to the tangent plane of the focusing face is a target straight line. At least one target straight line of one piezoelectric ceramic piece of the at least two piezoelectric ceramic pieces intersects with at least one target straight line of the other piezoelectric ceramic piece to form a sound wave superposition area located on the side, in the second direction, of the sound wave focusing area. The ultrasonic transducer can output a sound wave focusing area and a sound wave superposition area with different depths in the second direction.

The utility model discloses a silica gel battery cell heat insulation sheet which comprises an aerogel base layer, flame-retardant protective layers are fixedly adhered to the top end and the bottom end of the aerogel base layer, a rubber cushion plate is arranged at the top of each flame-retardant protective layer, silica gel gaskets are fixedly adhered to the top end and the bottom end of each rubber cushion plate, and the silica gel gaskets are arranged on the aerogel base layer. And a packaging film layer is installed outside the rubber cushion plate, an adhesive positioning layer is fixedly connected to the outside of the packaging film layer, an anti-skid limiting piece is fixedly connected to the top end of the adhesive positioning layer, and a reinforcing protruding block is fixedly connected to the top end of the silica gel gasket. According to the silica gel battery cell heat insulation sheet, the damping effect and the positioning effect are improved through the rubber pad and the anti-skid stripes, once the heat insulation sheet is impacted, the rubber pad plate and the silica gel pad outside the aerogel base layer have a certain buffer protection function, and the rubber pad plate and the silica gel pad can improve the connection stability through the reinforcing convex blocks; by means of the structure, the function of conveniently enhancing buffering is achieved, and the problem that the buffering effect is poor is solved.

The application discloses a near-zero-consumption building construction activity board house wall structure, which comprises a positioning base, an I-shaped clamping plate and a board house wall body, the positioning base is anchored to a foundation, an I-shaped clamping plate is fixed above the positioning base, a sealing gasket is bonded to the inner side of the I-shaped clamping plate, and the two I-shaped clamping plates are clamped with the two sides of the board house wall body through the sealing gaskets respectively, the board house wall body comprises a water tank, an outer wall body, an inner wall body, a thermal insulation board and an interior trim board arranged in sequence from left to right, a vacuum assembly is arranged between the outer wall body and the inner wall body so as to reduce heat propagation, and a phase change material is arranged between the thermal insulation board and the interior trim board, the structure not only can realize good thermal insulation, but also has good heat storage function.

The invention provides an improved pipeline structure for energy saving of a boiler, which relates to the field of boiler pipelines and comprises a protection base, a flange mounting groove is provided at the top of the protection base, pipeline mounting grooves are provided on the front and back groove walls of the flange mounting groove, second bolt clamping grooves are provided on the sides of the groove walls at the bottom ends of the two pipeline mounting grooves close to the flange mounting groove, first bolt clamping grooves are provided on both sides of the front and back groove walls of the pipeline mounting grooves, a fixing threaded hole is provided on one side of the top of the protection base, and a rotating sleeve is fixedly connected to the other side of the top of the protection base; the improved pipeline structure is inserted into the connection groove on the front side of the second connecting pipe by a steel inner pipe on the back side of the first connecting pipe, and then the first flange and the second flange are fixedly connected by four bolts, and then the first connecting pipe and the second connecting pipe are fixedly connected, so as to reduce the heat dissipation gap between the pipelines and reduce heat diffusion by the two flanges.

The invention discloses a battery device, a heat insulation assembly and a power utilization device, and relates to the technical field of batteries, the battery device comprises the heat insulation assembly and a plurality of battery monomers, the plurality of battery monomers are arranged in sequence, the heat insulation assembly is arranged between the adjacent battery monomers, the heat insulation assembly comprises a shell, a phase change material piece and a supporting piece, the shell is provided with a liquid outlet and an air inlet, and the liquid outlet is communicated with the phase change material piece. The air inlet is located above the liquid outlet, the phase change material piece is arranged in the containing cavity and changes phases between a liquid state and a solid state, the solid-state phase change material piece blocks the air inlet and the liquid outlet, the liquid-state phase change material piece opens the air inlet and the liquid outlet and discharges the air through the liquid outlet, and the supporting piece is an elastic piece and is arranged in the containing cavity. By arranging the heat insulation assembly, the risk of thermal runaway spreading is reduced, by arranging the gas inlet and the liquid outlet in the shell, the risk of pyrolysis product accumulation is reduced, the contact thermal resistance can be ensured after the phase change material piece is discharged, and meanwhile, the structure of the battery device can be simplified.

Impedance detection equipment for detecting the impedance of an overheat detection line on an aircraft comprises a connector for connecting the overheat detection line, a heating element for heating the overheat detection line, a controller and an impedance measurer which are connected with the connector, a power supply for supplying power to the impedance detection equipment, and a clamping device, the heating element is arranged on the clamping device, and the clamping device is configured to clamp the overheat detection line and heat the overheat detection line through the heating element, so that the overheat detection line is stably heated and detected, the impedance detection efficiency is improved, and whether the function of the overheat detection line is normal or not can be independently judged. In addition, the impedance detection equipment is compact in structure, easy to carry and suitable for a narrow environment.

The present invention relates to a bipolar scissor head device and a working method thereof, belonging to the field of medical devices. The present invention comprises a fixed blade mechanism, a movable blade mechanism, a ceramic frame and a pin shaft, wherein the ceramic frame is mounted on the fixed blade mechanism, and the movable blade mechanism is mounted on the fixed blade mechanism and the ceramic frame through a pin shaft. When the bipolar scissor head device is used for surgery, it forms a circuit through the bipolar poles, and the current does not pass through the human body, thereby reducing the risk of overheating and burns of the patient's contact part due to poor contact of the negative plate during use. The two poles are connected to the handle respectively to form a circuit, so that heat diffusion and adjacent damage are reduced accordingly. At the same time, by arranging a toothed structure on the fixed blade, slipping during the operation can be effectively avoided, and the normal operation can be ensured.

The invention discloses a cylindrical battery and a power utilization device, and belongs to the technical field of new energy materials. By adopting an in-situ polymerization technology, a compact and continuous quasi-solid electrolyte network is constructed in the cylindrical roll core, so that the safety pain points that a traditional liquid lithium ion battery is easy to leak and inflammable and explosive are fundamentally solved, and meanwhile, the technical bottlenecks that a solid-solid interface of a solid-state battery is poor in contact and large in impedance are overcome; according to the battery system, atomic-scale close contact of the electrolyte and the electrode particles is realized, the intrinsic safety and the energy density of the battery are remarkably improved while high ionic conductivity is ensured, and the battery system is particularly suitable for the power and energy storage fields with extremely high safety requirements.

This application provides an integrated power generation system with thermal energy and pressure storage cycles comprising a heat and pressure storage unit connected to a heat source, the heat source absorbs and transmits thermal energy to the unit to heat and pressurize a first working substance and convert it to a gaseous state; a first power generation device receives the high-temperature and high-pressure first working substance released from the unit and converts the fluid kinetic energy of the first working substance into electrical energy; a heat storage tank receives the first working substance flowing through the first power generation device for heat exchange and storage of thermal energy; and a cooling tank receives the first working substance from the heat storage tank to enable the first working substance and undergoes a phase change into a liquid state and then transmits it to the unit to complete a cycle.

The application provides a silicon-on-insulator structure and a forming method thereof, and the forming method of the silicon-on-insulator structure increases the room-temperature bonding strength during a bonding process through an activation treatment, reduces the temperature required in a subsequent reinforcement process, thereby reducing the thermal diffusion of heterogeneous components in the etching stop layer, ensuring the clear interface between the etching stop layer and a device layer, and further avoiding the deterioration of the thickness uniformity of the device layer after the etching stop layer is removed in the subsequent process; the uniformity of the device layer after etching is controlled through two selective etching processes, so that the thickness uniformity of the device layer of the finally obtained silicon-on-insulator structure is less than 10%; and the formation and removal of a sacrificial oxide layer make the surface of the device layer not have a porous morphology of high-frequency etching undulation.

Disclosed is a device and method for preventing thermal diffusion of a battery pack. In the device, at least one temperature sensor is provided on the battery pack to measure its temperature data; a controller is connected to the temperature sensor, and when the temperature data exceeds a predetermined threshold, the controller generates a trigger signal; at least one fire extinguishing agent spraying device is installed above the battery pack and is communicatively connected to the controller, the fire extinguishing agent spraying device mixes powder and sprays based on the trigger signal, the powder bin includes at least two compartments to separately and separately accommodate at least two kinds of powder, the powder reacts and absorbs heat after mixing, the bottom plate is openably provided at the bottom of the powder bin, the mixing bin is located below the bottom plate, the mixing bin is provided with a stirring device for mixing at least two kinds of powder from the powder bin into cooling materials, and the spraying bin is connected to the mixing bin to spray cooling materials toward the battery pack to cool the battery pack. The device effectively prevents and quickly prevents the occurrence of thermal runaway and thermal diffusion of the battery.

The invention discloses a double-rib induction quenching process for a steel track shoe, which comprises the following steps: mounting a positioning device on a machine tool worktable, and sleeving two pin shaft holes of the machined track shoe into a round pin shaft and a prismatic pin to fix the track shoe, so that the surface of the track, which is provided with a landing rib, is vertically arranged; connecting the intermediate-frequency inductor with a moving part of the machine tool so that the intermediate-frequency inductor can move; adjusting the angle of the base to enable the landing rib plane of the track shoe to be parallel to the working surface of the magnetizer of the intermediate-frequency inductor, and adjusting the gap between the landing rib of the track shoe and the magnetizer of the intermediate-frequency inductor; before each section of the landing rib is heated, a water sprayer is started to spray and heat each section of the landing rib, and a medium-frequency inductor is lifted to spray the section of the landing rib; and the track shoe is subjected to tempering treatment. The method is easy to operate and high in machining efficiency, the production cost can be reduced, thermal diffusion during heating of the landing rib can be reduced, thermal deformation of a transition zone between the landing rib and a base body and a pin shaft hole can be reduced, and the depth consistency of a hardening layer is good.