14results about How to "Increase infiltration speed" patented technology

The utility model discloses powder-liquid mixing equipment which comprises a shell, an air supply paddle, a scattering mechanism, a mixing impeller, a pumping impeller, a dispersing mechanism and a motor, the motor is connected with the shell, and the air supply paddle, the scattering mechanism, the mixing impeller and the pumping impeller are all connected with an output shaft of the motor; an air inlet channel, a scattering area, an infiltration area and a dispersing area which are sequentially communicated from top to bottom are arranged in the shell, the scattering mechanism is located in the scattering area and used for scattering powder, and the air supply paddle is located above the scattering mechanism, arranged at the air inlet channel and used for supplying air downwards. The infiltration area is used for infiltrating powder and liquid into slurry, the mixing impeller is located in the infiltration area, a plurality of through holes are formed in blades of the mixing impeller, the slurry penetrates through the through holes so as to shear and disperse the slurry, and the pumping impeller is used for driving the slurry to be discharged to the outside after being dispersed by the dispersing mechanism.

The invention provides an electrolyte and a preparation method and application thereof, and relates to the technical field of lithium ion batteries. Specifically, the electrolyte comprises a lithium salt, a boric acid ester solvent, a carbonic ester solvent and a fluoro-ether diluent, wherein the boric acid ester solvent comprises at least one of a mixture of tripropargyl boric acid ester and a fluoro boric acid ester compound or triethyl borate. According to the invention, the technical defects of high viscosity, low solubility with a lithium salt, poor compatibility with a negative electrode and the like of a borate solvent can be effectively solved; by adopting the preparation process of two times of liquid injection and two times of formation, the prepared battery has good performance in the aspects of production efficiency, electrochemical performance, safety performance and the like, and has a good application prospect.

The invention discloses an electrolyte for a soft package cylindrical battery. The electrolyte comprises the following components in parts by weight: 10-25 parts of lithium salt, 60-85 parts of an organic solvent and 5-15 parts of a functional additive, the lithium salt is prepared from 10 to 18 parts of lithium hexafluorophosphate, 2 to 5 parts of lithium bis (fluorosulfonyl) imide and 0.1 to 1 part of lithium difluorophosphate; the organic solvent is prepared from 10 to 20 parts of ethylene carbonate, 30 to 45 parts of propyl propionate, 10 to 20 parts of ethylene carbonate and 5 to 10 parts of propylene carbonate; the functional additive is prepared from 0.5 to 2 parts of vinylene carbonate, 1 to 3 parts of propylene sulfite, 3 to 8 parts of ethylene sulfate, 0.5 to 1.5 parts of fluoroethylene carbonate, 0.1 to 0.5 part of lithium bis (oxalato) borate and 0.1 to 0.5 part of lithium bis (oxalato) borate. The electrolyte disclosed by the invention is applied to the soft package cylindrical battery, the permeability and infiltration efficiency of the electrolyte can be remarkably improved, and the electrochemical performance of the battery is improved.

According to the lower insulating part, the end cover assembly, the energy storage device and the electric equipment, the battery cell space in the energy storage device is increased, the interior of the energy storage device is better filled with electrolyte, and therefore the production efficiency of the energy storage device is improved, the lower insulating part comprises the first surface and the second surface, the second surface of the lower insulating part is provided with the two bosses, and the two bosses are arranged on the first surface. The two bosses are arranged at intervals; the lower insulating part is provided with two first grooves and a first liquid injection hole, the two first grooves are arranged at intervals in the width direction of the lower insulating part, openings of the two first grooves are located in the first surface, each first groove is sunken from the first surface to the direction of one boss and comprises a groove side wall, the groove side wall is provided with a first through hole, and the first through hole is communicated with the first through hole. The first through hole penetrates through the groove side wall in the thickness direction of the groove side wall, the first liquid injection hole is located in one side of the two bosses, the first liquid injection hole and the two bosses are arranged at intervals, and the first liquid injection hole penetrates through the first surface and the second surface.

The application discloses a kind of marine carbon fiber warp knits and its preparation method application, carbon fiber reinforced resin composite material, belong to carbon fiber composite material technical field, solve the problem of existing technology in the forming of ship large curved surface workpiece Fabric is easy to shrink, resin infiltration efficiency is low.The marine carbon fiber warp knits includes at least two carbon fiber yarn sheets, the carbon fiber yarn sheet is formed by carbon fiber yarn spread yarn flat cross section;At least two carbon fiber yarn sheets are stacked along the thickness direction, and the lay angle of adjacent carbon fiber yarn sheet constitutes asymmetric lay structure;The carbon fiber yarn sheet is stitched by warp knitting thread, and the stitching density of the warp knitting thread is 8-14 roots / inch.The marine carbon fiber warp knits can realize width variation <5mm, resin rapid and uniform infiltration, improve the forming quality and efficiency of ship large curved surface workpiece.

The utility model relates to the technical field of batteries, and discloses a cylindrical lithium ion battery collector plate which comprises a main body mechanism, the main body mechanism comprises a battery collector plate body, and a collector plate shell welding area is fixedly arranged in the middle of the upper end of the battery collector plate body. A collector plate limiting ring area is fixedly arranged at the outer end of the upper end of the battery collector plate body, the collector plate limiting ring area is located on the outer side of the collector plate shell welding area, and a collector plate tab welding area is fixedly arranged at the upper end of the battery collector plate body. According to the cylindrical lithium ion battery collector plate, the collector plate shell welding area is in a boss design, close contact with the shell is facilitated, contact internal resistance and gaps are reduced, the collector plate shell welding area is in a boss embossing design, close contact with the shell is further facilitated, the contact internal resistance and gaps are reduced, and the welding stability is improved; and the liquid guide groove hole area of the collector plate is hollowed out, so that the electrolyte injection efficiency is improved, and the electrolyte infiltration speed is increased.

The application discloses a pole piece, an electrochemical device and an electronic device. The pole piece comprises a current collector and an active material layer. The active material layer is arranged on one surface of the current collector. The active material layer is provided with a first groove, a second groove and a third groove. The first groove extends along the length direction of the current collector. One end of the second groove is communicated with the first groove. The other end of the second groove is extended and arranged. A first included angle is formed between the extension direction of the second groove and the extension direction of the first groove. One end of the third groove is communicated with the second groove. The other end of the third groove is extended and arranged. A second included angle is formed between the extension direction of the third groove and the extension direction of the second groove. The pole piece aims to improve the transverse infiltration speed of the electrolyte in the battery and improve local lithium precipitation.

This application provides a positive electrode additive and its preparation method, a positive electrode sheet, a secondary battery, and a battery pack, wherein the positive electrode additive includes a fluorohydrazone compound represented by Formula I or Formula II. In Formula I, R1, R2, and R3 are each independently selected from -H or -F, and R1, R2, and R3 are not simultaneously -H; R4 is selected from substituted or unsubstituted alkyl, halogen, or nitro groups. In Formula II, R5, R6, and R7 are each independently selected from -H or -F, and R5, R6, and R7 are not simultaneously -H; R8 is selected from substituted or unsubstituted alkyl, halogen, or nitro groups.

The invention belongs to the technical field of secondary batteries, and particularly relates to an electrolyte, a lithium ion battery and electric equipment. The electrolyte comprises a lithium salt, an organic solvent and an additive, the electrolyte further comprises a fluorinated benzene ring phosphate compound with a structure shown in a formula (I), and the fluorinated benzene ring phosphate compound accounts for 0.5%-3% of the total mass of the electrolyte. In the invention, a proper amount of fluorobenzene ring phosphate compound with a specific structure can effectively improve the wettability of the electrolyte, improve the cycle and storage capacity of the battery in a high-temperature environment, improve the oxidation resistance of the electrolyte, and improve the low-temperature and rate performance of the battery. According to the present invention, the N-containing compound having the specific composition is introduced as the Lewis base to adsorb PF6 <-> so as to block the generation of PF5, such that the gas production of the battery during the high-temperature cycle process is inhibited, and the compound can establish the highly stable interface film on the positive electrode and the negative electrode so as to be used for manufacturing the high-performance lithium ion battery;

This application discloses a dispersant for lithium-ion battery negative electrode slurry and its application. The dispersant comprises water and an active ingredient, with the mass ratio of the active ingredient to water being 1:(0.7-6). The active ingredient comprises a first component, a second component, and a third component, with the mass ratio of the first, second, and third components being (0.1-4):(0.1-3):(0.1-4). The first component is polystyrene sulfonic acid or lithium polystyrene sulfonate; the second component is a comb-type copolymer polycarboxylic acid or a comb-type copolymer lithium carboxylic acid; and the third component is an acrylic acid-maleic anhydride copolymer or an acrylic acid-maleic anhydride copolymer lithium salt. The dispersant for lithium-ion battery negative electrode slurry provided in this application can solve the problem of difficult dispersion of carbon black and graphite in slurry.

The utility model provides an incense stick which can reduce the infiltration time of essential oil during production and can uniformly release fragrance during use. The incense rod is used for the fragrance device, the incense rod is in a long strip shape extending in the first direction, the incense rod comprises a plurality of layer parts which are separated from one another, and the plurality of layer parts are connected with one another in the second direction orthogonal to the first direction.

The invention discloses a negative electrode for a soft package cylindrical battery and a preparation method of the negative electrode. The negative electrode comprises a foamy copper current collector and a negative electrode active material layer coated on the foamy copper current collector, the negative electrode active material layer comprises the following components in parts by weight: 95-105 parts of graphite; 1-5 parts of conductive carbon black; 1-5 parts of a binder SBR; 0.5 to 2.5 parts of a dispersing agent CMC; 0.1 to 1 part of a lubrication aid SFC; 1-5 parts of a porous carbon nanomaterial; and 0.1 to 0.5 part of a surfactant. Compared with the prior art, the negative electrode provided by the invention can effectively solve the problems of poor wettability and low rate capability of the negative electrode of the soft package cylindrical battery.

The utility model relates to the technical field of glass fiber infiltration, and discloses an infiltration device for glass fiber manufacturing, which comprises a liquid storage tank, one side of the liquid storage tank is fixedly connected with a stirring component, and the back of the liquid storage tank is hinged with a tank cover through a hinge. According to the infiltrating device for glass fiber manufacturing, through the arrangement of the monitoring assembly and the input assembly, when the infiltrating device is used, the controller sets a threshold value needing to be kept by an infiltrating medium, when the concentration of the infiltrating medium is lower than the threshold value, a PH sensor can send a signal to the controller, the controller can open a water pump to input the infiltrating medium, and the water pump is closed when the threshold value is reached; in addition, the concentration of the infiltration medium in the infiltration pool is monitored, so that the consistency and stability of the infiltration process are ensured, the infiltration effect is prevented from being influenced by too high or too low infiltration medium, and the glass fiber manufacturing quality is improved.

The invention relates to the technical field of battery parts, in particular to a negative electrode collector plate and a battery. The invention provides a cathode confluence plate, which comprises a cathode confluence plate main body, the middle area of the cathode confluence plate main body is provided with a protruding part, the outside of the protruding part is provided with a plurality of reinforcing rib groups, the reinforcing rib groups are fixed on the cathode confluence plate main body, and the cathode confluence plate main body is also provided with a plurality of through holes penetrating through the cathode confluence plate main body. Each reinforcing rib set comprises a plurality of reinforcing ribs, the through holes are formed among the reinforcing ribs in the single reinforcing rib set, and a plurality of hollow buffer grooves are formed between the protruding parts and the reinforcing rib sets. According to the invention, the connection stability and reliability of the cathode of the cylindrical battery cell can be improved, and the damage to the welding strength caused by slight displacement of the roll core due to pole piece expansion or battery cell vibration and the like in the charging and discharging process of the battery cell is improved.