384results about How to "Avoid bloating" patented technology

The invention relates to a battery electrode material, in particular to a lithium titanate composite electrode material with surface coating layer; in the lithium titanate composite electrode material with surface coating layer, the electrode material is composed of lithium titanate particles and a coating layer coated with the surface of the lithium titanate particles; the particle size of the lithium titanate particles is 100nm-95mum, the average thickness of the surface coating layer is 0.2nm-5m, and the particle diameter of the composite electrode material is 0.1-100mum; the material of the surface coating layer is one or mixture of more than one kind of insulation oxide, insulation composite oxide, aluminium phosphate, magnesium phosphate, lithium fluoride, lithium phosphate or LiMPO4, wherein M is magnesium, ferrum, cobalt, nickel, chromium, titanium or vanadium; in the invention, by carrying out surface coating treatment to the surfaces of the existing lithium titanate particles, a layer of protective film is formed on the surface, so as to change the physical and chemical characteristics of the surface of the lithium titanate active material, the surface can not be reacted with electrolyte even if under overpotential condition, so as to avoid ballooning and ensure the capacity and the circularity of the battery not to be reduced.

In an implantable pacemaker, pacing pulses are delivered to a ventricle in a P-wave synchronous mode as long as no atrial arrhythmia is detected, pacing pulses and a mode switch is made to deliver pacing pulses to the ventricle in a non-P-wave synchronous mode if atrial arrhythmia is detected. From an impedance signal measured in the atrium, atrial distention is determined and, in the non-P-wave synchronous mode, the delivery rate of the pacing pulses is increased to decrease the atrial distention during atrial arrhythmia.

The invention discloses a six-degree-of-freedom humanoid robot arm, and relates to a robot arm. The invention aims to solve the problems that the existing robot arm is cumbersome in joint structure, heavy in self weight, low in load bearing ratio and complicated to control. A shoulder rotating joint, a shoulder joint, an upper arm, an elbow rotating joint, a elbow swing joint, a fore arm, a wrist rotating joint, a wrist swing and a hand are sequentially arranged from top to bottom, wherein an arm swing motor is connected with a worm by virtue of a conveyor belt, an arm rotating motor is connected with a shoulder swing support by virtue of a conveyor belt, an upper arm shell is arranged between a shoulder joint and an elbow joint, an elbow rotating drive motor and a speed reducer are sequentially arranged in the upper arm shell from top to bottom, an elbow swing joint motor is arranged in an elbow joint shell and is connected with an elbow joint conveyor belt, an elbow joint speed reducer is arranged in the elbow joint shell, a hand connecting support is arranged between the fore arm and the hand, a wrist joint swing motor is arranged on one side of the hand connecting support, and a wrist joint rotating motor is arranged at the upper end of the hand connecting support. The six-degree-of-freedom humanoid robot arm is applied to a humanoid robot.

The invention discloses a data security sharing method and system in a blockchain and cloud storage environment, and belongs to the field of Internet security. According to the invention, the intelligent contract is directly adopted to carry out identity authentication on the data request end, and the cloud server does not participate in authority authentication at any stage, so that the interference of malicious cloud is avoided, and the security of key generation and distribution in an attribute-based access control environment is ensured. According to the method and system, the actual dataciphertext of the user is placed on the cloud server, the metadata information is placed on the blockchain, and the actual data and the metadata are separated, so that bloating of the blockchain is avoided, the consistency of data formats is kept, and storage and query are facilitated. The data ownership end intensively delegates the authority to the intelligent contract, and the data ownership end can change the access control strategy of the data file at any time, so that the user still has the management control right of the data after uploading the data. According to the invention, an attribute encryption scheme based on a ciphertext strategy is used to achieve one-to-many fine-grained access control.

The invention discloses a method for adjusting the secondary cooling water amount and the roll gap value of a double-flow slab casting machine. In the double-flow slab casting machine, 12 cooling regions are formed for secondary cooling; 10 cooling water meters are provided; five grades, i.e., strong cooling: the secondary cooling water amount is 1.0-1.1 L/kg, medium cooling: the secondary cooling water amount is 0.8-0.9 L/kg, weak cooling: the secondary cooling water amount is 0.7-0.8 L/kg, medium-weak cooling: the secondary cooling water amount is 0.45-0.6 L/kg, and slight cooling: the secondary cooling water amount is 0.4-0.45 L/kg are divided to adapt to the cooling requirements of different types of steel respectively; the roll gap of a secondary cooling region support roll is consistent with the linear shrinkage rule of a casting blank from top to bottom, and decrease continually; and the roll opening between the outlet of a previous fan-shaped section and the inlet of a next fan-shaped section is kept consistent. By adopting the method, the internal cracking rate is lowered, the macrostructure of the casting blank is optimized, and the performance yield of steel is increased.

A composition for supplementing the nutrients to human body contains protein, fat, carbohydrate, minerals and vitamins. Its advantages are no lactose and cholesterol, and less Na and fat. It can be directly eater or used as the additive of food and beverage.

This invention is built-up plate heat preservation and insulation concrete building and its construction method. The heat preservation and insulation layer is also used as wall framework, concrete wall body base course is placed in wall framework, wall framework is consisted by two pieces of parallel set polystyrene foam plastic side plate, inner fixed billet is set in the plate, steel bar junction piece and welded mesh is set between the billet. PVC baffles are pasted on four walls of door and window mouth depth part, glass fiber grid layer is pasted on PVC baffles, inner and outer surface of wall heat protection plate is enclosed by glass fiber grid layer. Expanded metal is fixed on the layer, and it enclosures the outer surface of the heat protection plate, cement mortar is filled in mesh of the expanded metal, the thickness of the mortar is same to the expanded metal, concrete drowned orifice is opened on down table that at door and window mouth. The bottom layer of polystyrene heat protecting floor slab is floor slab plate that made of flute type polystyrene foam plastic pre-buried steel, rib joist steel is set in the flute, and it is placed with top layer as one body.

The invention relates to a copper-base powder metallurgy brake pad which is composed of copper, graphite, sea sand, ferrochromium, tin and ferrosilicon. The preparation technique comprises the following steps: weighing the powder components according to the proportion, incorporating zinc stearate and aviation kerosene, and evenly mixing; pressing into a pressed compact; and putting the pressed compact on a steel backing of which the surface is plated with copper, covering a graphite plate on the surface of the pressed compact, pressure-sintering in a sintering furnace in a gradient-temperature gradient-pressure mode, cooling in a water-cooling hood to room temperature, and discharging to obtain the copper-base powder metallurgy brake pad blank. The invention has the advantages of reasonable component proportioning, convenient manufacture, favorable wearability and long service life; the service life and braking performance of the brake pad can meet the braking requirements for a high speed shaft in the wind turbine generator set of which the power is greater than 2.5 MW; and the brake pad can be industrially produced, and has wide industrialization prospects.

The invention relates to a building waterproof heat-preservation exhaust compound system, which comprises a heat-preservation layer, a waterproof layer, a waterproof protective layer and an exhaust passage, and is characterized in that the heat-preservation layer comprises paved heat-preservation boards, the lower surfaces of the heat-preservation boards are provided with exhaust grooves, the exhaust grooves of all the heat-preservation boards are connected into the exhaust passage, one end of the exhaust passage is connected into a flue through a connecting pipe, and the waterproof layer and the waterproof protective layer are covered on the heat-preservation layer in turn. The building waterproof heat-preservation exhaust compound system has the following advantages that: the system is a heat-preservation waterproof moisture-proof exhaust system for roofs and the floors, which uses a JWG-M type to seal and resist water for EPS and XPS heat-preservation boards, is communicated with the flue through the exhaust grooves of the EPS and XPS heat-preservation boards, and exhausts moist air in time by the pipeline effect of the flue so as to achieve waterproof heat-preservation exhaust integral roofs. Simultaneously, the system removes the vertical exhaust pipes arranged on the roofs and reduces the hidden danger of seepage, and the roofs are smooth to prevent frost heave and gas heave so that the deserved effective service life of the waterproof and heat-preservation roofs is achieved. Besides, the system has good heat-preservation and waterproof effects.

The invention discloses a lithium iron phosphate power battery formation method.The method particularly includes following steps: (1), placing a battery after liquid injection in an environment with high temperature of 39-45 DEG C, using a vacuum formation device to vacuumize the inside of the battery, shelving to enable a pole piece and a diaphragm to fully absorb liquid and to be soaked, and charging; (2), charging the battery by stages, and using the vacuum formation device to vacuumize the inside of the battery in the charging process to complete formation; (3), after formation is completed, using a clamp to seal the battery, and aging the battery at high temperature; (4), after aging is completed, vacuumizing the battery, maintaining pressure for 1h, sealing the battery by knocking a steel ball, and performing capacity grading.By using the method, inside environment of a battery shell can be improved effectively, and bulging of the battery in the process of use is avoided, so that performance attenuation of the battery is delayed, a stable SEI film is generated, electric performance and safety of the battery are improved, formation time is shortened, and production efficiency is improved.

This invention provides an electrolyte for lithium ion batteries and a lithium ion battery containing the same and belongs to the technical field of lithium ion batteries. According to the invention, the problems that the existing lithium ion battery has a gas expansion phenomenon, and is low in energy density and poor in cycle performance, and the like can be solved. The electrolyte for lithium ion batteries, provided by the invention, comprises a solvent, lithium salts and an additive, wherein the additive is one or two of ethylene sulfate and dioxathiane 2-oxide, and in the charge and discharge processes of a battery, the additive can absorb water entrained in electrodes well so as to form a thick solid electrolyte interface (SEI) film on the surface of a negative electrode, and can inhibit the decomposition of an electrode solution at high pressure, thereby inhibiting the occurrence of gassing, and simultaneously improving the electrochemical performance of the battery.

The invention discloses a method for preventing the narrow surface of a continuous casting sheet billet from bulging. The method comprises the following measures of: (a) figuring out the heat transfer flux of a narrow-surface copper plate of a crystallizer through the following formula: the heat transfer flux of the narrow-surface copper plate is equal to a product of a flow rate of cooling waterof the narrow-surface copper plate and a specific heat capacity of the water as well as a temperature difference between inlet water and outlet water of the cooling water of the narrow-surface copperplate; and finding out the optimal flow rate of the cooling water of the narrow-surface copper plate of the crystallizer with the maximum heat transfer flux by regulating the flow rate of the coolingwater of the narrow-surface copper plate for multiple times and cooling the narrow-surface copper plate of the crystallizer through the cooling water in the flow rate which does not exceed the optimal flow rate of the cooling water. According to the method for preventing the narrow surface of the continuous casting sheet billet from bulging, the narrow-surface copper plate of the crystallizer is cooled by adopting the cooling water with the maximum heat transfer flux, the cooling effect is good, the contact between the narrow-surface copper plate and a billet shell of the sheet billet can be always kept, and the thick billet shell can be further formed, so that the billet shell of the sheet billet can be prevented from generating a bulging phenomenon under the static pressure of molten steel.

The invention provides a method and device for updating an input method word stock. The method comprises the following steps: recording word stock regulating information based on the last word stock version on a server into the current word stock version at the server, wherein the word stock regulating information comprises word updating states aiming at the word frequency changing state of the words in the last word stock version and based on the word frequency changing state; obtaining the number of the word stock of the client; and gathering all the word stock regulating information on theversion of the word stock of the client and the version of the word stock of the current server, and sending the gathered word updating information and the version number of the word stock of the current server to the client. The client can add the words needing to be added into the input method word stock on the client according to the word updating information and delete the words needing to bedeleted from the input method word stock on the client, and update the version number of the current word stock version on the client.

The invention relates to a lithium ion battery formation process and a lithium ion battery obtained by the lithium ion battery formation process. The lithium ion battery formation process adopts a mode of combining segmented negative pressure and segmented current, and the formation process comprises three stages: in the first stage, the negative pressure is 20-60Kpa, and the lithium ion battery is charged to 5-15% SOC at a constant current of 0.05-1 C; in the second stage, the negative pressure is 80-90 Kpa, and the lithium ion battery is charged to 20%-30% SOC at a constant current of 0.1-0.3 C; in the third stage, the negative pressure is 20-40 Kpa, and the lithium ion battery is charged to a cut-off voltage at a constant current of 0.3-0.5 C. The formation process is beneficial to exhausting in the formation process, reducing the liquid loss, avoiding swelling of the battery cell and improving the formation interface; the process is simple and convenient to operate, short in formation time and convenient to produce, and meanwhile, the formation process adopts one-time full charge, so the interface side reaction of the electrode and the electrolyte is fully carried out, and thecapacity consistency and the self-discharge screening consistency are improved.

The invention relates to a method for preventing shell expansion of a thick and large surface of a precision-casting stainless steel casting. The method comprises the following steps of: 1, manufacturing all layers according to a traditional process till the layer of shell where a thick and large surface of a precision-casting stainless steel casting shell is bundled with iron wires, wherein the layer of shell bundled with iron wires can be any layer between the fourth layer and the antepenult layer and one thick and large surface is bundled with two rounds of iron wires between which the distance is not larger than 70mm; 2, completely covering the bundled iron wires with a pasty fireproof coating, completely filling gaps between the iron wires and previous layer of shell with the fireproof coating, and spreading fireproof sand on the pasty fireproof coating; 3, drying the pasty fireproof coating and the fireproof sand on the iron wires, and then fabricating next layer of shell till subsequent shell fabrication is completed according to process requirements; 4, dewaxing; 5, roasting; and 6, casting the shell. By the method disclosed by the invention, the percent defective of castings, caused by shell expansion, can be reduced to below 1.5% from the original more than 25%, labor load of subsequent process steps can be reduced greatly, and productivity is improved.

The invention relates to the field of lithium ion batteries, and discloses a lithium ion electrical core and a lug. The lug comprises a metal band and lug glue, wherein the lug glue is bonded in the middle positions of the front surface and the back surface of the metal band; a protrusion part is arranged at one tail end of the metal band along the longitudinal direction; the protrusion part protrudes along the horizontal direction of the metal band; and the width of the protrusion part along the horizontal direction of the metal band is greater than that of the middle part of the metal band. The impedance at the welding part of the lug and a pole piece can be reduced by applying the lug in the lithium ion battery, the heat productivity at the welding part of the lug and the pole piece is reduced, and the bulge phenomenon of the lithium ion battery is avoided.

The invention, which relates to the field of lithium ion battery preparation, discloses a method for testing the tightness of a soft-packaging lithium battery. The method comprises: (1), electrolyte injection into the battery is carried out; to be specific, an electrolyte is poured into a battery electric core; (2), evacuation is carried out; to be specific, the battery is vacuumized in a vacuum cabin after electrolyte injection; (3), helium gas injection is carried out; to be specific, helium gas is injected into the vacuum cabin and thus the battery core is filled with the helium gas, and then the electric core is sealed; and (4), evacuation and helium detection are carried out; to be specific, the battery is transferred to another vacuum cabin, the battery core is clamped by a clamp tocarry out pressurization, and then vacuumization is carried out to detect the helium content in the vacuum cabin. According to the method disclosed by the invention, the battery is protected from being damaged; one hundred percent of full detection is realized; and the detection accuracy is high and the cost is low.

The present invention relates to a mould-closing mechanism of plastic bottle-blowing machine. It comprises a fixed mould plate mounted on the machine frame, said fixed mould plate is connected with movable mould plate by means of upper and lower guide rods, on the fixed mould plate a cylinder for opening and closing mould is mounted, the piston rod of said cylinder is connected with movable mould plate. Its described fixed mould plate includes symmetrical two blocks of A and B, on said two blocks of fixed mould plates respectively are mounted mould-opening and closing cylinders of A and B, the piston rods of said two mould-opening and closing cylinders are respectively connected with movable mould plates of A and B. Besides, said invention also includes the components of upright column lifting fixing plate, top-moulding upright column, bottom mould cylinder, pressure piston and others.

The invention discloses a formation and capacity grading method for a lithium ion battery, and the method comprises a two-stage charging step of carrying out the constant-current charging of the two-stage charging at the current of 0.2 C or below and 0.5 C or above in sequence to a 40%-65% state of charge; an aging step, wherein the aging step is not performed for 24-48 hours at the ambient temperature; and a first charge and discharge cycle step of carrying out the first charge and discharge cycle at the ambient temperature of 0.7-1.0 DEG C, and finally performing charging to a state of charge of 30%-80%. A stable SEI film further improves the infiltration performance and the conductivity, and enhances the electrolyte retention amount of the battery cell, thereby improving the cycle performance of the lithium ion battery.

The invention discloses a constant pressure liquid injection device and a liquid injection method for a square power battery, the device comprises a liquid injection device and a fixture, wherein thefixture comprises an upper cover of the fixture and a lower cover of the fixture, wherein the upper cover of the fixture and the lower cover of the fixture are of a separable structure and are in a locked and sealed state when closed and form a fixture inner cavity, the fixture inner cavity is used for fixing a battery, and the battery comprises a battery injection hole and a battery inner cavity;The liquid injection device is fixedly connected with the upper surface of the fixture; and the top of the infusion cup is also connected with a reversing valve, and one end of the reversing valve isconnected with an air pipe joint. The invention alternately injects liquid into the positive and negative pressure of the device through switching the reversing valve and connecting the external equipment through the gas pipe connector, which is fast and safe, and the battery is not easy to deform.

The invention relates to a multi-level human face comparison system and method. The method comprises the following steps that a first human face image is transformed into a first grey level image, and the overall feature and the local feature of the first grey level image are extracted and saved; a second human face image is transformed into a second grey level image, the overall feature of the second grey level image is extracted, and the overall feature of the second grey level image is compared with the overall feature of the first grey level image; if comparison succeeds, the local feature of the second grey level image is extracted, and the local feature and the overall feature of the second grey level image are put into a standard comparison library; if comparison fails, the local feature of the second grey level image is extracted and compared with the local feature of the first grey level image; if comparison succeeds, the local feature and the overall feature of the second grey level image are put into the standard comparison library. Compared with the prior art, overall comparison and local comparison are combined, and thus the accuracy of human face comparison is improved; furthermore, the comparison standard can be automatically updated, and the application range is enlarged.

The invention relates to a method for producing high-purity pure iron. The method includes the following steps: iron oxide is reduced in a layered-control mode through a direct-reduction system to manufacture sponge iron; the sponge iron is added into a medium-frequency or power-frequency induction furnace for smelting, and composite slag forming constituents are added in batches; after smelting and slagging-off are conducted, composite slag forming constituents are added, argon-oxygen mixed gas bottom blowing is carried out on the medium-frequency or power-frequency induction furnace through porous bricks at the bottom, blowing of the mixed gas is stopped when the temperature of molten steel reaches 1620 DEG C to 1650 DEG C, standing is carried out on the molten steel for 25 minutes to 35 minutes, then slagging-off is conducted, a proper amount of aluminum is added into the molten steel for 1 minute to 2 minutes, argon bottom blowing is carried out through the air bricks at the bottom of the induction furnace at the moment, and stopped when the temperature is continuously raised to range from 1640 DEG C to 1680 DEG C, horizontal continuous casting or bottom casting is conducted after standing is conducted on the molten steel for 15 minutes, and the low-impurity pure iron with the iron content larger than 99.9% is obtained, wherein the contents of more than twenty elements are all smaller than 0.01%. Meanwhile, the pure iron with the higher purity can be produced through vacuum refining or electroslag remelting. By means of the method, the flow path is short, devices are simple, and investment is saved.

The invention discloses a processing method and system for avoiding repeated log output. The method comprises the following steps that S1, in a log recording system, a log write interface function is called to transmit current log information, and unique parameter identifiers are added for the current log information; S2, new log files are generated and opened, a log list in the log recording system is obtained, the current log information is compared with the unique parameter identifiers of existing log information in the log list, the current log information is written into the new log files if same unique parameter identifiers do not exist, and it is indicated that the current log information exists in existing log files and the current log information is filtered if the same unique parameter identifier exists; S3, the new log files are closed to complete repeated log information processing. The phenomenon that whole log files are inundated with a large quantity of repeated messages is avoided, and the phenomenon that the log files are too large is also avoided.

The present invention discloses a polyurethane foam material and a preparation method thereof. The preparation method comprises: uniformly mixing and stirring a polyether polyol composition A and a modified isocyanate prepolymer B according to a certain ratio, pouring into a mold, and aging to obtain the polyurethane foam material, wherein the polyether polyol composition A comprises a mixed polyether polyol, a foaming agent, a chain extender, a catalyst, and, if necessary, an inorganic filler and a pigment paste, and the modified isocyanate prepolymer B comprises urethane modified isocyanate and carbodiimide modified isocyanate. According to the present invention, the polyurethane foam material has a density of 80-160 kg/m<3> and a hardness of ASKER C 10-40, and has characteristics of good gas permeability and low permanent compression deformation; and the material has good processing characteristics, the mold expansion during shrinkage and mold opening is avoided, and the defective rate of the product is reduced.

The invention discloses a preparation method of Xinhui dried tangerine peel enzyme beverage. By adopting four industrial advanced unique processes such as natural fermentation and chelating process, low-high-pressure bidirectional homogenizing, high-temperature instantaneous sterilization and low-high-temperature canning, the specific nutritional ingredients of Xinhui orange, dried tangerine peel,rhizoma polygonati, fructus lycii, fructus crataegi and the like can be maximally reserved; and in the prepared Xinhui dried tangerine peel enzyme beverage, the content of crude polysaccharide and total flavonoids is increased, the extraction rate is high, the taste is good, and the tissue state stability is good.