33results about How to "Will not cause damage" patented technology

The utility model relates to the technical field of buoy storage, and discloses a buoy storage box convenient to transport, which comprises a storage component, a limiting component, a pushing component and a positioning component. The storage assembly and the limiting assembly are arranged, the overall appearance is attractive and elegant in a rotary opening and closing mode, the box body and the box cover can serve as reinforcing ribs of the box body and the box cover in the process of limiting an internal buoy through the limiting plate integrally formed in the box body and the box cover, and the box body and the box cover are convenient to use. The integral structural strength of the box body and the box cover during transportation is improved, the sponge blocks have elasticity, so that the buoy is fixed and cannot be damaged, the safety of the buoy can be improved in the transportation process, and the problem that cost is increased due to the fact that the buoy is damaged during transportation is solved.

The utility model discloses a wafer box cross-unit or cross-line body carrying device with an anti-collision function. The wafer box cross-unit or cross-line body carrying device comprises a main frame, a carrying assembly is arranged on one side of the main frame, one end of the carrying assembly is arranged outside the main frame, and the other end of the carrying assembly is located at the bottom of the main frame. The carrying assembly and the main frame are vertically distributed; the top of the main frame is further provided with a three-axis mechanical arm, and the three-axis mechanical arm is located over the carrying assembly. By means of the designed suction assembly, an existing direct connection mode with a suction cup is abandoned, dislocation flexible connection is adopted, even if the three-axis mechanical arm rapidly descends, the wafer disc cannot be damaged, meanwhile, rapid connection can be achieved, the defects of an existing carrying device in the suction wafer disc are overcome, and the efficiency of carrying the wafer disc is improved. And meanwhile, the suction assembly can achieve negative pressure without additionally arranging a vacuumizing assembly, the manufacturing cost of the whole carrying device is further reduced, and follow-up maintenance is facilitated.

The adsorption type unhooking robot comprises a fixing device and an unhooking mechanical arm, and the fixing device comprises a 3-PRS assembly, an adsorption base assembly, a clamping arm assembly, a worm reducer assembly and a motor lead screw assembly. The device has good adaptability and stability, electronic devices such as an electronic ruler, an ultrasonic distance measuring sensor and a torque sensor are used in the fixing device, and data such as the extending distance of the air cylinder, the distance between the contact block and the corresponding face of the pedal and the clamping force applied to the surface of the pedal by the clamping arm assembly are fed back in real time; convenience is provided for feedback adjustment of the device, and the adaptability of the device is greatly improved. The acting object of the adsorption fixing device is a pedal, and the adsorption fixing device is widely applied to various freight trains and is a standard part, so that the fixing device can adapt to various train types.

This invention relates to the preparation and application of silicon-carbon anode materials, and discloses a silicon-carbon anode material modified with lithium phosphide nanoparticles, its preparation method, and a secondary battery. The material has a core-shell structure, with the core comprising porous carbon and lithium phosphide nanoparticles and silicon nanoparticles generated in situ within the micropores of the porous carbon; the shell comprises a composite coating layer composed of amorphous carbon and carbon nanotubes; silicon accounts for 45-65 wt% of the modified silicon-carbon anode material by mass, and the P / Si molar ratio of the lithium phosphide nanoparticles to the silicon nanoparticles is 2:98~30:70. A small amount of phosphorus source is first deposited in the porous carbon micropores, followed by lithiation treatment to convert the phosphorus in the porous carbon into lithium phosphide nanoparticles, then a second deposition of silicon nanoparticles, and finally overall carbon coating. This invention's modified silicon-carbon anode material improves the problem of rapid impedance increase in the low-charge range of silicon-carbon anode materials, significantly enhancing the user experience.

The utility model discloses a medicine bottle storer and a disposable medicine bin mechanism, the medicine bottle storer comprises a medicine bottle storer body, an anti-drop piece is arranged on the inner wall of the medicine bottle storer body, the disposable medicine bin mechanism comprises a medicine bottle storer and a medicine storage bottle installed in the medicine bottle storer, and the anti-drop piece is used for fixing the medicine storage bottle. According to the medicine bottle storage device and the disposable medicine bin mechanism, the medicine storage bottle is fixed in the medicine bottle storage device body through the anti-falling piece, so that the medicine bottle arranged in the medicine bottle storage device body can be prevented from falling off, and the medicine bottle and the medicine bottle storage device body are combined into a non-detachable whole; when the medicine bin is replaced, the medicine storage bottle and the medicine storage bottle are integrally replaced, the medicine storage bottle cannot fall off and be damaged, the positions of the medicine storage bottle and the medicine storage device are fixed, the replaced medicine storage bottle and the power assembly cannot generate position deviation, and the dosage is accurate during injection.

The invention discloses a gear-holding type gear shifting manipulator of an automatic driving robot of an engineering machinery vehicle, and relates to the field of unmanned equipment and unmanned driving of engineering machinery vehicles. The mechanical arm comprises a mechanical arm base, a gear shifting lower rod assembly and a gear shifting upper rod assembly, the gear shifting upper rod assembly can achieve the gear shifting action of a forward gear, a neutral gear and a reverse gear of the engineering machine, and the gear shifting lower rod assembly can achieve the gear shifting action of a speed gear; the driving motor drives the ball screw in the electric cylinder to move, transmission is conducted through the connecting rod executing mechanism, accurate clamping and gear shifting operation of the gear-holding type gear shifting rod of the engineering mechanical vehicle are achieved, and meanwhile real-time monitoring and early warning of gear shifting action can be achieved through the displacement sensor. The technical blank that unmanned gear shifting of engineering machinery vehicle equipment is difficult to achieve quickly on the premise that existing engineering equipment does not need to be changed is filled, and the requirement for automatic gear shifting of the engineering machinery vehicle can be met. The gear shifting mechanism has the characteristics of compact structure, high gear shifting precision and adaptability to working conditions of engineering machinery.

The application provides an embedded flash memory structure and a manufacturing method thereof. The gate stack layer comprises a tunneling oxide layer, a floating gate layer, a gate dielectric layer and a control gate layer which are stacked in sequence. The floating gate layer comprises a plurality of mutually electrically isolated nano storage points. During programming, charges can be stored in the plurality of mutually electrically isolated nano storage points. When breakdown occurs in any nano storage point, the remaining undamaged nano storage points can still normally store charges due to the electric isolation between the nano storage points, so that the floating gate layer can maintain normal storage function, thereby improving the overall stability of the memory and increasing the service life of the memory. The application has six kinds of embedded flash memory cell structures. In particular, the tunneling oxide layer and the floating gate layer are arranged to protrude from both sides of the gate dielectric layer and the control gate layer, thereby greatly improving the programming speed of the embedded flash memory.

The invention discloses a pollutant targeted cleaning method for a separation membrane, and belongs to the technical field of water treatment membranes, the method comprises the following steps: taking a polluted polyamide separation membrane, and detecting the content of iron ions in a polluted layer of the polyamide separation membrane; if the polluted layer of the polyamide separation membrane contains iron ions, firstly, pre-soaking the polyamide separation membrane by using a penetrant Tween-20 to soften the polluted layer; a hydrogen peroxide solution is added, iron ions in the membrane pollution layer are used as a catalyst, hydrogen peroxide is subjected to in-situ catalytic decomposition, oxidizing active substances are generated, and pollutants are selectively degraded and removed; and finally, performing high-speed flushing with demineralized water to finish the cleaning process. On the premise of no exogenous catalyst, efficient and accurate oxidation cleaning of a membrane pollution layer can be achieved, meanwhile, a sensitive membrane material is protected, and secondary damage is avoided.

The utility model discloses a round pipe jacking backrest device which comprises an arc-shaped abutting plate, a filling layer is fixedly installed at the position of a middle cavity of the arc-shaped abutting plate, a placing guide assembly is arranged on the filling layer, and two first supporting piles and two second supporting piles are fixedly installed on one side of the filling layer. The device is placed in a working well, the arc-shaped abutting plate abuts against the inner wall of the working well, two hydraulic oil cylinders are hung in and placed downwards through a crane, and in the process that the hydraulic oil cylinders are placed, the hydraulic oil cylinders can be placed above a bearing piece through the placing guide assembly, so that the hydraulic oil cylinders are placed. In the using process of the hydraulic oil cylinder, the rear end of the hydraulic oil cylinder can abut against the interior of the insertion groove through the counter-acting force of the hydraulic oil cylinder, the counter-acting force generated by fixing and abutting of the hydraulic oil cylinder is further transmitted and dispersed to the arc-shaped abutting plate, the force is dispersed to the rear well wall through the arc-shaped abutting plate, the abutting stability is improved, and the device cannot be damaged.

The invention is suitable for the technical field of electronic fences, and particularly relates to an exhibit touch detection electronic fence system capable of being modularly deployed, which comprises an electronic fence module, an electronic fence management base station, a handheld PDA (Personal Digital Assistant) and exhibit protection system software, the electronic fence modules are used for detecting the distance between each laser transmitter and an obstacle by transmitting laser and judging whether invasion exists or not according to distance value changes, and the electronic fence management base station is used for managing all the electronic fence modules. The device only needs to be placed on the ground or a table top around an exhibit, and cables do not need to be fixed and laid; the electronic fence module is powered by a built-in battery and communicates with a management base station by adopting a Bluetooth communication technology, and a power supply and communication cable does not need to be mounted, so that the electronic fence module can be quickly mounted and dismounted and only needs to be placed on the ground or a table top, and site environments such as the ground of an exhibition area cannot be damaged.

The utility model relates to CPU cover taking device belongs to installation equipment technical field to solve the existing computer mainboard production, adopts manual taking CPU inner cover to install or dismount, and there is the problem of easy to cause component damage, personnel workload and low production efficiency. The present application includes installation board and cover taking assembly, and the installation board is equipped with the shape and CPU inner cover compatible container groove, the cover taking assembly includes handle and stop piece, the handle is fixedly installed in the installation board, and the stop piece is installed in the installation board, and the stop piece is movably installed in the installation board towards the container groove direction, the CPU inner cover is installed in the container groove, and the stop piece moves towards the container groove direction to limit the CPU inner cover and moves away from the container groove direction. The CPU cover taking device of the present application can replace manual taking inner cover, and the hand does not directly contact the inner cover, realizes reducing personnel workload and improving production efficiency, and will not be restricted by space, and will not cause component damage.

The utility model relates to the technical field of workpiece clamping, and provides a clamping device and a machine tool, and the clamping device comprises a driving motor, an electric pull rod input shaft, a lead screw and a lead screw nut. Wherein the driving motor is provided with a motor output shaft; the first end of the electric pull rod input shaft is rigidly and directly connected with the motor output shaft; the first end of the lead screw is directly connected with the second end of the electric pull rod input shaft; the lead screw nut is in threaded transmission connection with the second end of the lead screw. The pull rod is connected to the lead screw nut. According to the clamping device provided by the utility model, the input shaft of the electric pull rod is rigidly and directly connected with the output shaft of the motor, and the lead screw is directly connected with the input shaft of the electric pull rod, so that the driving force of the driving motor can be transmitted to the lead screw without arranging a speed reducer, the driving force can be prevented from being amplified by the speed reducer, and the clamping force of the clamping device is further reduced; and the application range of the device is wider, thin-wall workpieces or elastic workpieces and other workpieces with small bearing force can be clamped, and the thin-wall workpieces or the elastic workpieces and other workpieces cannot be damaged.

This utility model relates to the field of pneumatic tool technology, and in particular to a blade mounting structure for an eccentric movable vane pneumatic motor. The utility model mainly consists of a stator, rotor, radial groove, first permanent magnet, spring, second permanent magnet, blade, oil guide block, and wear-resistant rubber block. These components work together. By adding a first and second permanent magnet, capable of generating repulsive force, to the radial groove of the rotor, the reliability of the reciprocating radial displacement of the blade is ensured in conjunction with the spring. An oil storage chamber is provided in the blade to store lubricating oil. A wear-resistant rubber block is installed on the outer end of the blade via a snap-fit ​​oil guide block. The oil guide groove in the oil guide block directs the oil from the storage chamber into the wear-resistant rubber block. The oil-soaked wear-resistant rubber block replaces the blade in contact with the inner wall of the stator. The wear-resistant rubber block has self-deformation capability, preventing damage when in contact with the inner wall of the stator. Simultaneously, the lubricating oil further enhances the lubrication effect.

The utility model discloses a novel mould pressing mould for powder processing, which comprises a base, a positioning plate, side pressing plates, an end baffle and a lower pressing plate, the side pressing plates are symmetrically arranged on the base, the positioning plate is fixedly arranged on the base, the two sides of the positioning plate are respectively matched with the side pressing plates, inclined planes are symmetrically arranged on the inner sides of the two ends of the side pressing plates, and the end baffle is arranged on the lower pressing plate. A limiting protrusion is arranged between the two inclined faces, the two ends of the limiting protrusion are flush with the two ends of the positioning plate respectively, an end baffle is arranged between the two inclined faces, the end of the positioning plate and the end of the limiting protrusion are both matched with the end baffle, the side faces of the two sides of the lower pressing plate are matched with the limiting protrusion, and the end faces of the two ends of the lower pressing plate are matched with the end baffle. The two ends of the two side pressing plates are connected through locking assemblies respectively. And the two side pressing plates are separated without knocking, so that the formed product is not damaged, the side pressing plates are not damaged, the service life of the mold is prolonged, and the yield of products is improved.

The utility model discloses a novel reflow soldering furnace fixture, including the fixture upper cover, the fixture upper cover is equipped with recess portion, the recess portion is fixed with the heat dissipation subassembly, the heat dissipation subassembly includes the heat dissipation base and the integrated multiple heat dissipation teeth, the heat dissipation base bottom surface close recess portion upper surface. The utility model discloses technical effect and advantage: install heat dissipation tooth on the welding fixture upper cover, after the fixture enters the soldering furnace, the large -area advantage of heat dissipation tooth is shown, it can rapidly absorb heat, absorbs more heat in shorter time, thereby lets the solder paste reach melting point in shorter time, then again in the cooling section, the heat is scattered fast, makes the solder paste quick solidification and reduces the temperature when the fixture is discharged, guarantees the temperature of the fixture and product when discharging not too high, thereby solves the personnel scald hidden danger, guarantees the product and is equipped into the tray, will not cause the tray deformation, product damage.

A cooking machine with a spatula convenient to disassemble and assemble comprises a shell, the shell is provided with a cavity capable of containing a frying pan, the spatula is arranged in the frying pan, a transmission shaft connected with one end of the spatula in a matched mode is arranged on one side of the frying pan, a positioning shaft connected with the other end of the spatula in a matched mode is arranged on the other side of the frying pan, and the transmission shaft rotates to drive the spatula to rotate. The positioning shaft is in sliding connection with the frying pan in the axis direction of the positioning shaft, the dismounting and mounting mechanism is used for controlling the positioning shaft to move and comprises a trigger rotationally connected with the outer wall of the frying pan, and the upper end of the trigger is connected with the positioning shaft; when the frying pan is outside the shell, the trigger is pulled to drive the positioning shaft to move in the direction far away from the other end of the pancake turner, so that the pancake turner can be detached; when the wok is in the shell, the transmission shaft is in transmission connection with the other end of the turner, the trigger drives the positioning shaft to move towards the turner, the positioning shaft penetrates through the wok to be connected with the other end of the turner, and the trigger is restrained by the inner wall of the shell.

A kind of multi-purpose wireless mobile power supply suitable for hydrogen-rich cup, including timing module, battery module component, output enable module, wireless power supply control module, wireless power supply drive module and wireless power supply coil, the control end of output enable module is connected with timing module, battery module component is connected with the power input end of output enable module, wireless power supply drive module is connected with the power output end of output enable module, power supply coil is connected with wireless power supply drive module, the control end of wireless power supply drive module is connected with wireless power supply control module.The utility model is equipped with function change-over switch and timing module, when power supply is given to hydrogen-rich cup, it is switched to hydrogen-rich cup mode, and time limit is carried out, when reaching time, mobile power supply will be automatically turned off, and will not cause damage;When it is switched to electronic product charging mode, it is same as conventional power bank in prior art, so that its use purpose is more various.

The utility model discloses a cement troweling device for civil engineering construction, which comprises a cement troweling machine, the cement troweling machine comprises a rack and a troweling plate arranged at the bottom of the rack, a driving motor for driving the troweling plate to rotate is arranged on the rack, a handheld push handle is arranged on the rack, an annular protective frame is sleeved on the periphery of the troweling plate, and the troweling plate is arranged on the outer side of the annular protective frame. A driving assembly for driving the annular protection frame to move up and down relative to the trowelling plate is arranged on the rack, and after the driving assembly drives the annular protection frame to move downwards and make contact with the ground, the trowelling plate is lifted to be separated from the ground. The annular protective frame provides protection for the manufacturing process, and operation safety is guaranteed. After cement surface operation is completed, the driving assembly drives the movable annular protection frame to move downwards to make contact with the ground, so that the troweling plate is lifted to be separated from the ground, and even if mistaken starting exists, the troweling plate can only idle and cannot be damaged.

The utility model discloses a kind of packing gland of slurry pump, include: packing gland main body and locking bolt assembly;Wherein, the packing gland main body includes two identical packing gland mechanism;Two the packing gland mechanism is fastened by the locking bolt assembly, and an integral annulus is formed;The inner thread is equipped in the annular inside.This utility model discloses a novel packing gland structure, the utility model has simple structure, easy to operate, safe, strong reliability, and will not cause packing damage and other advantages, especially after packing is used for a period of time, the volume becomes smaller after extrusion, shaft seal effect starts to be poor, shaft seal leakage water volume is too large, packing gland needs to be tightened to extrude packing, control leakage water volume and shaft seal effect, and the leaked shaft seal water can be discharged through 8 evenly distributed circular through holes.

The present application belongs to the technical field of anilox roll cleaning, and in particular to an anilox roll cleaning machine, which comprises a supporting assembly and a cleaning assembly, and the supporting assembly is used for fixing the anilox roll. For the cleaning assembly, the installation slide plate can be controlled to vibrate by controlling the ultrasonic wave emitter in the cleaning assembly. The vibration of the installation slide plate drives the first connecting rod to vibrate up and down, and the swing of the first connecting rod drives the second connecting rod to vibrate up and down through the connecting pin shaft, and in this process, the connecting pin shaft slides in the corresponding guide shell. The vibration of the second connecting rod drives the cleaning needle to vibrate. The cleaning needle transmits ultrasonic vibration to the water cavity formed in the installation shell, so that the water vibrates to wash the anilox roll. In this way, the washing effect can be ensured, and part of the ultrasonic vibration energy can be carried away by the flowing water to prevent damage to the anilox roll caused by direct ultrasonic vibration cleaning.

This utility model relates to the technical field of medical device rinsing equipment, specifically, to a medical device rinsing device. It includes a rinsing cabinet with several spray nozzles for spraying ozone water at the upper part of the cabinet, a vibration motor on the outer wall, and three mounting boxes corresponding to the spray nozzles. The output end of the vibration motor is connected to a flange, on which three sets of differentiated amplitude transmission components are distributed at 120° intervals. These components consist of a steel telescopic rod with a built-in rigid spring forming a micro-amplitude transmission component, an aluminum telescopic rod with a built-in medium-stiffness spring forming a medium-amplitude transmission component, and a titanium telescopic rod with a built-in flexible spring forming a large-amplitude transmission component. Each component achieves a gradient distribution of vibration energy through a combination of different materials and spring characteristics. This utility model, through a graded vibration transmission system and optimized fluid coverage design, solves the problems of insufficient cleaning of precision instruments and overload of heavy instruments caused by single vibration parameters in traditional devices.

The utility model discloses an automatic sampling device for obtaining cigarette products from a drum wheel of a cigarette making machine, and belongs to the technical field of tobacco machinery. Comprising a sampling mechanism which comprises a cigarette taking fork, and the cigarette taking fork takes out cigarettes from a cigarette taking and discharging wheel; the cigarette separating mechanism comprises a cigarette conveying belt, and after the cigarettes are taken out by the cigarette taking fork, the cigarettes fall onto the online detection conveying belt along the conveying channel under the action of the conveying belt; an overturning sheet is arranged on the conveying channel, and a hopper is arranged below the overturning sheet; a sliding channel is arranged at the tail end of the cigarette receiving mechanism and the conveying channel, a supporting hand is arranged at the bottom of the sliding channel, and a conveying belt is arranged in the middle of the supporting hand and conveys cigarettes to the measuring unit. By means of the structure, automatic sampling and manual sampling can be achieved at the same time, and sampling is accurate.

The utility model discloses a CCS sampling device and battery pack, the CCS sampling device comprises a connector, a sampling line, a sampling terminal and an aluminum bar busbar, one end of the sampling line is connected with the connector, the other end of the sampling line is divided into a plurality of branch sampling lines, each branch sampling line comprises a plurality of strands of sampling leads, one end of each strand of sampling lead is connected with the connector, and the other end of each strand of sampling lead is connected with the aluminum bar busbar. One end of the sampling wire is connected with the aluminum bar busbar, the other end of the sampling wire is connected with a sampling terminal, the sampling terminal comprises a first conductive terminal and a second conductive terminal, the first conductive terminal is connected with the aluminum bar busbar, and the second conductive terminal comprises a first conductive part connected with the first conductive terminal and a second conductive part connected with the sampling wire; the first conductive part and the second conductive part are connected through a fusing conductor. According to the CCS sampling device, when a short circuit phenomenon occurs on an installation or operation site, the fusing conductor with relatively small current-carrying capacity is fused, so that the sampling lead is protected, the whole CCS sampling device cannot be damaged or a battery pack cannot be scrapped, and the cost is reduced.

This utility model discloses a dust removal and cooling device for high-dust, high-concentration, ultra-high-temperature hydrogen gas, used for dust removal and cooling of the cracked gas produced by methane cracking for hydrogen production. It includes a dust collector and a cooling device. The dust collector comprises a gravity dust collection box and a water tank, with the gravity dust collection box nested within the water tank. The gravity dust collection box is used to deposit carbon powder in the cracked gas and has an ash hopper at its bottom. The water tank cools the gas entering the gravity dust collection box by supplying circulating water. The cooling device cools the cracked gas after dust removal by supplying circulating water. This dust removal and cooling device effectively solves the technical problems existing in the current methane cracking for hydrogen production process, such as difficulty in carbon-hydrogen separation under high dust, high concentration, and ultra-high temperature conditions, carbon powder blockage during hydrogen cooling, and difficulty in collecting carbon powder after high-temperature dust removal. The cracked gas undergoes subsequent cooling treatment only after a large amount of carbon powder is removed and after initial cooling and deceleration, which reduces the risk of blockage in the cooler.

The application relates to the field of power system automation technology and relates to a full-automatic high-voltage line ice-breaking inspection robot, ice-breaking moving assemblies are installed at the inner sides of both ends of an ice-breaking robot main body, and a high-voltage line ice-breaking assembly is installed at the inner side of the middle of the ice-breaking robot main body; with the synchronous extension of two groups of hydraulic pump rods, the movable sheave frame is pushed inwards to contract through the wheel frame plate, so that the movable driven wheel and the movable driving wheel tightly clamp the high-voltage line main body, and the ice-breaking wheel adopts the same clamping principle; after the movable driving wheel and the movable driven wheel are clamped on the surface of the high-voltage line main body, the silica gel cord will contact the surface of the high-voltage line main body, the silica gel cord reduces the skidding phenomenon in the advancing process through friction, with the advance, after the ice-breaking of the high-voltage line ice-breaking assembly, the ice-breaking wheel is synchronously moved along the high-voltage line main body, the ice-breaking spikes welded on the surface of the ice-breaking wheel continuously scrape and break the residual ice chips, so that the residual ice layer on the surface of the high-voltage line main body is as much as possible cleaned.

The truck-mounted forklift comprises a base, a bearing wheel mechanism and a first driving part, the bearing wheel mechanism comprises a fixing seat and walking supporting legs, the walking supporting legs are symmetrically and fixedly arranged on the fixing seat, the two walking supporting legs penetrate through limiting grooves respectively and extend to the outer side of the base, the first driving part is arranged on the base, and the first driving part is arranged on the base. The first driving piece drives the fixing base to move, so that the walking supporting legs move in the limiting grooves in the length direction of the limiting grooves. The first driving piece drives the bearing wheel mechanism to advance or retract with the frame as the center, manual pulling and pulling of the bearing wheel mechanism are avoided, the truck-mounted forklift can automatically go deep into a carriage or move out of the deep position of the carriage, potential safety hazards caused by manual operation are avoided, and the working efficiency of the truck-mounted forklift is improved. And the whole climbing process can be stable and uniform in speed through electric driving, and it is guaranteed that goods cannot be damaged.

The invention relates to the technical field of electrochemical energy storage system thermal management, and provides an energy storage battery entropy coefficient determination method, which comprises: constructing a finite element model in COMSOL simulation software; carrying out a round of complete battery constant-current charging and discharging experiment on the target battery, and recording related data of the experiment; based on the finite element model, fitting a battery cell thermal conductivity coefficient, a large-surface convection heat transfer coefficient, a bottom-surface convection heat transfer coefficient, battery cell heat, positive tab heat and negative tab heat in sequence, and updating parameters of the finite element model until the number of iterations reaches a preset upper limit; and calculating an entropy coefficient in combination with experimental data. By means of the method, the efficiency and precision of entropy coefficient measurement of the high-capacity energy storage battery can be improved with low cost.

The utility model provides a kind of improved vertical self-priming centrifugal pump, including pump body, machine seal, bearing and water baffle ring;Machine seal is installed at the top of pump body, bearing is installed on the pump shaft outside the pump body, water baffle ring is installed on the pump shaft between machine seal and bearing.The utility model moves machine seal and bearing to the upper portion of pump body by structural improvement, machine seal leakage can be found and handled in time, will not cause bearing damage, solves the problem that current vertical self-priming centrifugal pump machine seal leakage is easy to cause lower bearing damage.