10009results about How to "Eliminate potential safety hazards" patented technology

The invention relates to the oil gas industry, particularly to a material hoisting and transportation device utilized in oil and gas field fracturing operation. The material hoisting and transportation device is characterized in that a material storage tank is mounted on the left of a frame body; an upper orbit is mounted at the upper part of the frame body; a lower orbit is mounted at the right end of the lower part of the frame body; a belt conveying device is mounted on the upper orbit and the lower orbit; a feeding hopper is mounted at the bottom of the belt conveying device; a hoisting device is mounted at the right end of the upper part of the frame body; the hoisting device is mounted in an operation orbit; a hook is mounted on the hoisting device; during operation, the belt conveying device can longitudinally move on the upper orbit and the lower orbit; and during operation, the hoisting device can longitudinally and transversely move in a horizontal plane. The material hoisting and transportation device has a one-key locating function, and automatic operation and locating of the belt conveying device and the hoisting device can be achieved through the function.

The invention provides a fault on-line diagnosis and early warning method of a flameproof dry-type transformer for mine in order to raise the accuracy and rapidity of fault diagnosis. The method comprises the following steps: determining monitoring quantity; extracting characteristic values: extracting a three-dimensional spectra parameter and two-dimensional statistical parameter in a partial discharge signal as characteristic quantities, with regard to operation voltage, current and iron core leakage current, extracting effective values of the operation voltage, the current and the iron core leakage current as characteristic values, and taking real-time values of a temperature parameter as characteristic quantities; using a normalization method to calculate a corresponding value of each characteristic quantity and taking the corresponding value as an input parameter of an intelligent diagnosis system; collecting values of each monitoring quantity under different environment, and obtaining training and testing samples of a nerve network under corresponding environment; establishing a nerve network: selecting a generalized RBF nerve network intelligent diagnosis method to establish a nerve network; utilizing a sample data training nerve network and forming a fault diagnosis tool; establishing a database; storing collected real time data and the above diagnosis result into a ground server real-time database and a real-time early warning information table, and carrying out diagnosis and early warning through an expert system.

The invention discloses a full-automatic bearing assembly machine. The assembly machine comprises a base, a working platform, a assembling station and a press fit station, wherein the assembling station and the press fit station are arranged on the working platform; an inner-ring feeding mechanism is arranged in the front of the assembling station, and a roller assembling mechanism is arranged behind the assembling station; a roller feeding mechanism is arranged behind the roller assembling mechanism; a holder feeding mechanism is arranged on one side of the assembling station; the inner ring of the bearing, the holder and a tapered roller are assembled together to form an inner assembly of the bearing; an assembly transferring mechanism which can convey the inner assembly of the bearing from the assembling station to the press fit station is arranged between the other side of the assembling station and the inner side of the press fit station; a press fit mechanism is arranged on the press fit station; a material discharging passage is arranged outside the press fit station; and a material pushing mechanism is arranged on the material discharging passage. With the adoption of the structure, assemblies of the holder, the tapered roller and the inner ring of the bearing can be performed automatically, and the inner assembly of the bearing is transferred to the press fit station for pressing through the assembly transferring mechanism, so that the assembly efficiency and the assembly quality are improved greatly, and potential safety hazards are eliminated.

The embodiment of the invention provides a voice recognition method based on a mobile terminal. The method comprises the following steps: collecting environmental sound signals; indentifying the environmental sound signals according to preset identification information; when the environmental sound signals contain special sound signals matching the preset identification information, judging whether the loudness of the special sound signals reach the preset threshold; and if so, controlling to output the special sound signals. Correspondingly, the embodiment of the invention also provides a mobile terminal. The mobile terminal of the invention utilizes the voice recognition technology, overcomes the application defects of the headset of the existing mobile terminal, eliminates the hidden danger caused by the reduced induction to the external environment sound when the user uses the headset of a mobile terminal and promotes the user experience.

The invention relates to solid-state electrolytes, in particular to a polycarbonate all-solid-state polymer electrolyte, an all-solid-state secondary lithium battery made of the same and preparation and application thereof. The all-solid-state polymer electrolyte is prepared from polycarbonate macromolecules, lithium salt and a porous supporting material; the thickness is 20-800 micrometers, the mechanical strength is 10-80 MPa, the room temperature ion conductivity is 2*10<-5>S / cm-1*10<-3>S / cm, and the electrochemical window is higher than 4V. The all-solid-state polymer electrolyte is easy to prepare and form, good in mechanical property, high in ion conductivity and wide in electrochemical window; meanwhile, the solid-state electrolyte effectively inhibits growth of negative electrode lithium dendrites and improves interface stability and long circulation performance.

The invention discloses a pressure cooker with a cover-opening-closing protecting safe device. The pressure cooker comprises a steel cover, a plastic face cover, a cooker body, a ball float valve, a lower cavity formed in a top plate of the steel cover and provided with an upper opening, an upper cavity formed in the plastic face cover and provided with a lower opening, a connecting plate, a push rod and a push rod spring, and a containing cavity is formed by the upper cavity, the lower cavity and the circumferential wall of the steel cover. The pressure cooker further comprises a driving rod, a reset spring, a pivot joint base and a driven buckling plate, and the driven buckling plate comprises a driving end, a pivot joint part and a buckling plate part; the pivot joint base is fixed in the containing cavity, and the buckling plate part and a driving part of the connecting plate are buckled; the driving rod is fixed onto the driving end of the driven buckling plate and matched with a driving guiding hole in the steel cover. As the structure is adopted, after the cooker cover and the cooker body are buckled, when the cooker cover is not rotated to be in place, the top of a float is sheltered with a driven part of the connecting plate, and the float is prevented from rising when the pressure in the cooker is higher than the atmospheric pressure; it is guaranteed that the cooker cover and the cooker body are buckled to be in place, and potential safety hazards are eliminated.

The invention discloses a five-axis numerical control polishing machine capable of changing grinding heads automatically. The five-axis numerical control polishing machine comprises a plurality of semi-axis grinding heads, a machine body frame, a controller, a polishing head, a grinding head supply mechanism, a spindle clamping device, a Z-axis drive mechanism, an X-axis drive mechanism, a Y-axis drive mechanism, an A-axis rotary workbench and a C-axis rotating mechanism. The polishing head, the grinding head supply mechanism, the spindle clamping device, the Z-axis drive mechanism, the X-axis drive mechanism, the Y-axis drive mechanism, the A-axis rotary workbench and the C-axis rotating mechanism are respectively connected with the controlled and controlled by the same. The five-axis numerical control polishing machine capable of changing grinding heads automatically has the advantages that the polishing machine is ingenious and reasonable in structural design, high in automation level, convenient and fast to operate, high in flexibility by the five-axis linkage structure, and widely applicable; multiple polishing procedures such as rough polishing, fine polishing and mirror polishing can be completed at one-step clamping, clamping time is saved, machining efficiency and precision are increased greatly, polishing effect is guaranteed, work efficiency is increased, labor intensity of workers is lowered, enterprise competitiveness is increased effectively, and polishing of surfaces of complex curve shapes can be achieved.

The invention relates to a compound and a preparation method thereof as well as a negative electrode prepared by adopting the compound and a lithium ion battery. The compound comprises silicon, silicon oxide SiOx (x is greater than 0 and is less than or equal to 2) and silicate, wherein positive ion elements of the silicate are reductant elements, and Si, O and the reductant elements in the compound are uniformly distributed. Reductants used in the compound are heated and insulated in the environment of negative pressure, so that SiO steam reacts with reductant steam in the form of a gas phase so as to condense to obtain the compound, and then the compound is further used as a raw material so as to prepare a modified silica negative electrode material. The negative electrode material is suitable for the lithium ion battery, the prepared lithium ion battery has high charge and discharge specific capacity and excellent first coulombic efficiency, the charge capacity is 1447 mAh / g or above, the discharge capacity is 1213 mAh / g or above, and the first coulombic efficiency is 83.8% or above.

The invention discloses a beneficiation method for recovering zinc, lead and silver from a zinc leaching residue. The method basically comprises the following steps of: recovering water-soluble zinc by a washing, zinc leaching and precipitating method to obtain a zinc concentrate; and recovering lead and silver to obtain a lead-silver concentrate by a disperse, size mixing, surface modifying and floating method. When the zinc content in the precipitate obtained by the washing, zinc leaching and precipitating method is lower, selective floating and enriching are carried out on the precipitate to obtain the zinc concentrate; and selective size mixing and floating are carried out on the leaching residue to recover indissoluble zinc in the leaching residue and then the indissoluble zinc is sent to a lead and silver recovery system. The method has the advantages that the process is simple, and required equipment investment is less; the production cost is low to ensure that an economical treatment method is found for the zinc leaching residue with a low zinc content; roasting with coal is not needed, thus the smoke pollution problem is avoided; return water can be recycled; and floatingtailings are subjected to low-toxicity treatment, and dry stockpiling can be used for replacing full size tailings library stockpiling, therefore, potential safety hazards of the full size tailings library are eliminated.

An over-current and over-voltage protection circuit for an electronic cigarette, comprising a battery and an interface, a control unit and a charging detection switch unit; the control unit is configured for calculating an actual charging current according to the first working voltage and determining whether the actual charging current exceeds a preset charging current threshold value, and sending a first charging controlling signal to the charging detection switch unit; the control unit is further configured for real-timely detecting an input voltage of the interface, determining whether the input voltage of the interface is in over-voltage status, and controlling a turned-on or turned-off operation of the charging detection switch unit. The over-current over-voltage protection circuit and method eliminate the security risk of the battery pole not having a charging management circuit in the non-normal charging status.

The invention relates to a method and a device for monitoring, also permanently and automatically, temperature distributions and / or temperature anomalies on the basis of distributed fiber-optic temperature sensing as well as to the use of such methods. According to the invention the detection of local temperature extremes, i.e. minimums or maximums, in view of the evaluation is performed by an evaluation without numeric derivations. With the device for monitoring ascending and supply pipes surrounded by an annular space it is possible to check the safety of pressurized installations, particularly in the field of low-pressure gas storage, in a cost-efficient manner. Moreover, the position of an underground watershed or respectively the direction and flow rate of the flows in flooded drift sections can be determined on the basis of fiber-optic temperature measurements. The defined arrangement of preferably vertical sensor cables inserted into the bores also makes it possible to examine the tightness of base sole and lateral walls in building excavations. Finally, the virtually horizontal, meander-shaped arrangement of fiber-optic cables situated in several levels makes it possible to evaluate and control the efficacy and homogeneity of leaching processes in leaching dumps and fills.

A licensing attribute certificate enables a trusted computing base to enforce access to a computing resource by a computer application. The licensing attribute certificate can contain enforcement data which limits the use of the computing resource. The licensing attribute certificate can also contain information allowing for the tracking of licensing data about the use of the computing resource. The use of a licensing attribute certificate to enforce access to a computing resource can allow products to be fielded which have their capability limited to a specific subset of functions. The enforcement data, the licensing data, and the data limiting the application to a specific subset of functions are cryptographically bound to the computing resource using a licensing attribute certificate according to the invention. Prior to allowing access to the computing resource by the computer application, a trusted computing base strongly authenticates that usage via the licensing attribute certificate.

The invention is a cooking utensil, a safety pressure cooker, and aims to provide a safety pressure cooker with simple and reliable structure and no explosion. The pressure cooker comprises a pot body, a pot cover, a pressure limiting valve and a sealing ring. It is characterized in that the sealing ring is connected with the elastic body, and the sealing ring moves or rotates under the action of the steam pressure in the pot, and its action is controlled by the elastic body. The elastic body is added with a preset force or a preset torque, and its value is equal to the pressure or torque of the steam on the sealing ring when the steam pressure in the pot is a safe pressure. Therefore, when the steam pressure in the pot is lower than the safety pressure, the sealing ring will not move and maintain its sealing effect. But when the steam pressure in the pot exceeds the safety pressure, the pressure or torque of the steam in the pot on the sealing ring is greater than the preset value of the elastomer, so that the sealing ring moves or rotates, and a gap is formed between the sealing ring and the pot body and cover. The steam releases and the steam pressure decreases. The safety device has the advantages of simple structure, stability and reliability, and can effectively eliminate potential safety hazards of the pressure cooker.

The invention discloses an automatic wire arranging device and belongs to the technical field of cable manufacturing. The existing wire arranging method is prone to notches, wire accumulation and wire jumping. The device comprises a portal frame, a transverse moving platform, a mechanical arm, a lifting mechanism, a horizontal moving mechanism, a dynamic complementing mechanism, an automatic reversing mechanism, a wire winding mechanism, a portal auxiliary frame, a controller and an encoder. Wire arranging is conducted according to a set pitch, in a wire arranging process, the wire arranging device can conduct position complementing control according to actual production conditions, a sheathed line and a designed mechanism structure are arranged in a set angle range, and the conditions of notches and wire jumping during wire arranging can not happen.

A licensing attribute certificate enables a trusted computing base to enforce access to a computing resource by a computer application. The licensing attribute certificate can contain enforcement data which limits the use of the computing resource. The licensing attribute certificate can also contain information allowing for the tracking of licensing data about the use of the computing resource. The use of a licensing attribute certificate to enforce access to a computing resource can allow products to be fielded which have their capability limited to a specific subset of functions. The enforcement data, the licensing data, and the data limiting the application to a specific subset of functions are cryptographically bound to the computing resource using a licensing attribute certificate according to the invention. Prior to allowing access to the computing resource by the computer application, a trusted computing base strongly authenticates that usage via the licensing attribute certificate.

The invention provides a special portal-type bolster frame assembly manipulator for a truck bogie production line, which is mainly composed of a frame, two side frame manipulators, a swing bolster manipulator and an electric control unit, wherein the side frame manipulators, swing bolster manipulator and electric control unit are installed on the frame; the frame is mainly composed of a cross beam, a support beam, a vertical support and a traveling beam which are connected with each other; the two side frame manipulators are installed on the cross beam, and each side frame manipulator is composed of a side frame transverse operating / vertical lifting unit and a side frame grabbing / clamping / turning unit; and the swing bolster manipulator is installed on the cross beam and positioned betweenthe two side frame manipulator. The invention provides an indispensable important apparatus of the key position bolster frame assembly for a truck bogie production line; the side frame manipulators can operate leftward and rightward or forward and backward to grab and lift the side frames transported by the transport vehicle, and smoothly align and assemble the side frame with the swing bolster grabbed by the swing bolster manipulator, and thus, the degree of mechanization and automation is high; and the invention has the advantages of labor saving, time saving and high assembly quality, and eliminates the potential safety hazard in the craning process.

The invention discloses a method which utilizes natural gas pressure energy; namely, the pressure and the temperature of the natural gas in a high pressure pipeline are reduced by a no-power refrigerator so as to gain low temperature natural gas which then exchanges the heat with a normal-temperature refrigerant which is sent by a normal-temperature tank; the low temperature refrigerant with temperature reduced enters a refrigerant storage tank for standby and is finally delivered to a cold energy user; the normal-temperature natural gas with temperature increased enters the pipeline. The method which utilizes natural gas pressure energy has convenient and practical whole process technique and high efficiency, spends little investment on the self-pressure energy in the pressure reduction process of the high pressure natural gas which is recovered by a pressure modulating station, converts the pressure energy into the cold energy with low operation cost, leads the cold energy to be used by cold quantity users of cold storages, cold water air conditioners, wasted rubber deep-cold crushing round the pressure modulating station by means of the refrigerant, etc., or to be made into ice blocks and dry ice products for abroad sale, etc., thus gaining huge economic benefits, improving the utilization ratio of the energy resource and eliminating the safe hidden trouble which is generated by sudden coolness of the equipment in the normal pressure modulating process.

The invention relates to an organic and inorganic composite all-solid-state electrolyte, in particular to an organic polycarbonate macromolecule and inorganic fast-ion conductor composite all-solid-state electrode and preparation and application of an all-solid-state battery formed from the same. The organic and inorganic composite all-solid-state electrolyte comprises polycarbonate macromolecule, an inorganic fast-ion conductor, a lithium salt and a porous rigid support material, the thickness of the organic and inorganic composite all-solid-state electrolyte is 5-2,000 micrometers, the mechanical strength is 2-150MPa, the room-temperature ionic conductivity is 1*10<-4>-6*10<-3> S / cm, and an electrochemical window is greater than 4V. The organic and inorganic composite all-solid-state electrolyte provided by the invention is easy to prepare and simple to form, has favorable mechanical property, and is relatively high in room-temperature ionic conductivity and relatively wide in electrochemical window; and meanwhile, by the organic and inorganic composite all-solid-state electrolyte, the growth of lithium dendrites of a negative electrode can be effectively prevented, the interface stability is improved, and the long-circulation and safe application performance of the battery are further improved.

The invention discloses a physical similar simulation test device and a physical similar simulation test method for tilted stratums. The physical similar simulation test device comprises an external framework, a tiltable rack, a front baffle, a rear baffle, a hydraulic supporting device and a hanging hoisting device, a similar simulation test is performed on stratums with different tilt angles by adopting the device and the method, physical mechanical performances of stress distribution, displacement change and the like inside the stratums under the action of external disturbance, ground stress, external force application and the like can be measured to obtain related technical indexes and parameters so as to research the rule of the true stratums in the process, and the effective struts can be facilitated during the construction of the stratums, thus providing a guarantee for the safety construction of the stratums.

The invention provides a mixing method of movement authorities during train zone switching. The mixing method comprises mixing of movement authorities of a transfer ZC (Zone Controller) and mixing of movement authorities of a takeover ZC; the movement authority mixing mode is based on a co-administration zone idea, the state of mixed MA (Movement Authority) wayside equipment is determined by combining the MA1 calculated by the transfer ZC and the MA2 calculated by the takeover ZC after the MA mixing destination is determined, so that the state change of the equipment in the co-administration area can be monitored in real time when the transfer ZC and the takeover ZC calculate corresponding mixed MAs, and therefore the response time of a system on equipment fault is prolonged; and the MA of the transfer ZC and the MA of the takeover ZC, which are generated for a train, are consistent, so that the situation that the train is suddenly decelerated, even emergently braked is avoided, and therefore the system safety is ensured.

The present invention discloses remote real-time safety monitoring system for hoisting apparatus and its control method. The present invention has a remote transmission device for data transmission with the upper monitoring server, and a sensing signal acquirer for real-time acquisition of the parameter information of the hoisting apparatus. The control method is to adopt several parallel remote control threads for data processing, and includes the first setting the received data into idle data processing queue with the data monitoring and processing thread and the subsequent processing the data in the queue with the data statistics and saving thread. The monitoring system of the present invention can realize critical state alarm and emergency state control as well as understand the running state of the hoisting apparatus remotely.

The invention discloses a dressing safety detection method for a worker on a working site of an electric power facility. An SVM (support vector machine) classifier is trained based on HOG (histogram of oriented gradients) characteristics to identify the worker on the working site of the electric power facility and judge whether the worker is neatly dressed or not based on a worker identification result. The method comprises the following steps of detecting a worker target appearing on the working site of the electric power facility by training a HOG-characteristic-based classifier, and judging whether dressing and equipment of the worker target meet safety requirements on the working site or not based on the identified worker target, mainly comprising safety items such as whether a helmet is worn or not, whether safety clothes are completely worn (without exposed skin) or not and whether the worker on a pole transformer correctly wears a safety belt or not. According to the method, the dressing of the worker can be detected in advance before the worker enters the working site, and an additional worker for supervision is not required to be deployed; in addition, if the dressing of the worker is inconsistent with norms, the worker is early-warned and prompted, so that safety accidents caused by nonstandard dressing are avoided, and potential safety hazards are eliminated.

The application discloses a quantum key distribution method and an apparatus, a privacy amplification method and an apparatus for the process of quantum key distribution, a data transmission method based on quantum keys, and a data transmission system based on the quantum keys. The quantum key distribution method includes: obtaining bit streams with the same basis vector by sending or receiving coding quantum states of random bit streams and comparing and measuring basis vectors; extracting parameter information related to privacy amplification and initial keys from the bit streams with the same basis vector after error code correction according to a pre-appointed method; and regarding the initial key as input, implementing the privacy amplification algorithm according to the parameter information, and obtaining a shared quantum key. By employing the method, hidden risks for negotiation of privacy amplification parameters in classical channels can be eliminated, and the security of the quantum key distribution process is effectively improved.

The invention discloses a pressure cooker with a cover-opening-closing protecting safe device. The pressure cooker comprises a steel cover, a plastic face cover, a cooker body, a ball float valve, a lower cavity formed in a top plate of the steel cover and provided with an upper opening, an upper cavity formed in the plastic face cover and provided with a lower opening, a connecting plate, a push rod and a push rod spring, and a containing cavity is formed by the upper cavity, the lower cavity and the circumferential wall of the steel cover. The pressure cooker further comprises a driving rod, a reset spring, a pivot joint base and a driven buckling plate, and the driven buckling plate comprises a driving end, a pivot joint part and a buckling plate part; the pivot joint base is fixed in the containing cavity, and the buckling plate part and a driving part of the connecting plate are buckled; the driving rod is fixed onto the driving end of the driven buckling plate and matched with a driving guiding hole in the steel cover. As the structure is adopted, after the cooker cover and the cooker body are buckled, when the cooker cover is not rotated to be in place, the top of a float is sheltered with a driven part of the connecting plate, and the float is prevented from rising when the pressure in the cooker is higher than the atmospheric pressure; it is guaranteed that the cooker cover and the cooker body are buckled to be in place, and potential safety hazards are eliminated.

The invention relates to automatic rubber hose cutting equipment and an automatic rubber hose cutting technology. The automatic rubber hose cutting equipment comprises a bottom plate, a supporting device and a cutting device, and the supporting device and the cutting device are sequentially installed on the bottom plate from left to right; the supporting device comprises a fixing plate, a fixed frame, a movable air cylinder, an inner wall supporting mechanism and an outer wall supporting mechanism; the cutting device comprises a linear guide rail, an electric sliding block, a working plate, aworking gear, a driving gear, a driving motor, a rotating ring, a rotating gear, a rotating motor, a supporting air cylinder, a supporting plate, a rotating rod, a sliding frame, a mounting frame, a cutting motor and a cutting blade. The invention further provides a using method of the automatic rubber hose cutting equipment. The equipment and the technology can solve the problems that in an existing rubber hose cutting process, the labor cost is high, the working efficiency is low, the cutting surface is not smooth, safety hidden hazards exist and the surface of a rubber hose is easily scratched, and the function of automatically cutting the rubber hose can be achieved.

The invention discloses a moistureproof type low-smoke halogen-free flame-retarding wire and cable insulation material used for building. The insulation material comprises components, by weight, 100 parts of vinyl copolymer and / or ethylene propylene rubber, 100-250 parts of halogen-free flame retardants, 1-20 parts of compatilizer, 0.3-5 parts of antioxygen, 0.5-5 parts of lubricants, 0-3 parts of coupling reagents, 0-2 parts of dispersing agents, and 2-20 parts of one or more of vinyl silicone oil, silicone, silicone grease, silicone rubber, and mineral oil. Wires made of the material is low in smoke, free of halogen, incapable of releasing poisonous gas. Flames can be retarded due to the fact that a single stick of wire can vertically combust at combusting time. Moreover, some special addition agents are added in materials of insulation layers or protective sleeve layers, so that the surface hydrophobic property of products is increased and can be used in a high-temperature humid environment for a long time, and short circuit accidents caused by moisture absorption of the wire insulation layers are avoided.

The invention relates to a construction technology for allowing a tunnel to pass through a karst cave, and in particular relates to a construction technology for allowing a tunnel to pass through an ultra-large karst cave. The technology at least comprises the following steps of: 1) performing simple bridge treatment on the underground part of the karst cave; 2) performing primary support, namelyarranging a support wall at one side of the karst cave; 3) forming parallel guide holes; 4) performing bottom treatment; 5) treating the tunnel hole body at the inlet section of the karst cave; 6) filling C25 early strength sprayed concrete within 1 meter at the top of the support wall, and arranging phi 50 small grouting conduits with the lengths of 3 meters in the concrete, wherein the distancebetween the small conduits is 1.5 meters; 7) supporting the arch part and the side wall surrounding rock of the karst cave by adopting phi 22 cartridge anchor rods arranged in a plum blossom shape and at a distance of 150cm*150cm, hanging phi6 reinforcing meshes at a distance of 15cm*15cm, and spraying C25 early strength concrete with the thickness of 15 centimeters; 8) treating the accumulation of the karst cave; and 9) monitoring and measuring when the tunnel passes through the ultra-large karst cave. The construction technology for allowing the tunnel to pass through the ultra-large karst cave is simple in process, convenient for construction, low in cost, scientific, effective, energy-saving and environmentally-friendly.

The invention provides a drying method of pole pieces of a lithium-ion secondary battery, which comprises the following steps of: respectively drying an anode coil stock and a cathode coil stock; placing the coil stocks into a pallet in a drying box; vacuumizing the drying box to -0.1MPa, then continuously vacuumizing for 1-30 minutes, and closing; heating the drying box by utilizing a heater; filling inert gas into the drying box after 2-10 hours, and stopping until the pointer of a vacuum meter reaches -0.01MPa; exchanging the inert gas with moisture in the drying box for 5-30 minutes, vacuumizing the drying box to -0.1MPa, then continuously vacuumizing for 1-30 minutes, and closing; and closing the heater, and taking the coil stocks out of the drying box to be rolled after the temperature drops to the indoor temperature. The drying method provided by the invention can be used for completely eliminating the moisture in the coil stocks of the pole pieces, thereby improving the performance of the battery and eliminating the potential safety hazards caused by the ballooning of the battery.

The invention provides a pre-lithiation treatment process of a silicon-based negative electrode. The pre-lithiation treatment process comprises the steps of paste uniformization, coating, metal lithium electrodeposition by a two-step constant-current pulse deposition method, DMC soaking, drying and the like. The invention simultaneously provides a pre-lithiation treatment device of the silicon-based negative electrode. The pre-lithiation treatment device comprises an electrolytic groove, a working electrode, two pieces of counter electrodes and a wire. With the adoption of the pre-lithiation treatment process and device, the initial charging and discharging efficiency of a silicon-carbon negative electrode can be effectively improved, and the cycle lifetime of the silicon-carbon negative electrode can be prolonged.

The invention relates to an elevator shaft construction scaffolding device capable of being elevated along with construction layer of building main body structure and a method for setting the same. The device comprises a scaffold made by setting up steel tubes, hoisting rings, a platform steel frame, support climbing feet, a plurality of wood joists and a template surface layer, wherein the platform steel frame consists of two steel joist main beams and a plurality of secondary beams; the support climbing feet are hinged with the end edges at two ends of the steel joist main beams; the hoisting rings are fixedly connected on the main beams; the plurality of wood joists are arranged above the main beams at a certain interval in the same direction as that of the secondary beams; the template surface layer is fixed above the wood joists through iron nails; the hoisting rings and the connecting short heads of the platform steel frame penetrate through the template surface layer; and the scaffold made by setting up the steel tubes is fixedly connected with the connecting short heads of the platform steel frame penetrate. The device and the method provided by the invention have the following advantages that: the mounting, the positioning, the hoisting and the repositioning of the whole elevator shaft construction scaffolding device are very simple and fast; and the whole system including wall templates can be once finished hoisting within about five minutes.