38results about "Non-aqueous electrolyte cells" patented technology

The utility model belongs to lithium sub -power type battery technical field discloses a kind of lithium sub -power type battery negative electrode structure, including upper and lower two negative electrode lithium strips, one layer nickel strip current collector bar and one layer nickel hole current collector net are fixedly arranged between two negative electrode lithium strips;The utility model connects with nickel hole current collector net when the interlayer structure of negative electrode lithium strip-nickel strip current collector bar-nickel hole current collector net-negative electrode lithium strip can also guarantee when breaking down due to the consumption of reaction at the time of reaction to end time;Nickel strip current collector bar and nickel hole current collector net between using spot welding mode connection, nickel strip current collector bar and nickel hole current collector net are pressed together with lithium strip using roll pressing mode, guarantee the firm reliable connection and sufficient contact between both, effectively improve the utilization of negative electrode active material, the load output ability and the safety performance after battery discharge of battery.

The utility model discloses a battery PTC connecting structure relates to lithium subcylindrical battery technical field, include: plastic cover, the plastic cover sets up at battery shell top and is provided with the open installation circular groove, is equipped with the through -hole for the electric core to pass through upwards on the installation circular groove, metal positioning sheet, the metal positioning sheet sets up in the installation circular groove and is connected with the electric core, PTC thermistor, the PTC thermistor is circular and is connected on the top of metal positioning sheet in the installation circular groove, metal false cover, the metal false cover sets up in the installation circular groove and bottom surface is connected with PTC thermistor, be equipped with the anti -rotation spare for limiting metal positioning sheet, metal false cover rotation in the installation circular groove. The utility model discloses through the structure innovation, makes the false cover surface keep level while keeping the PTC protection function, and all parts vertical stacking connection makes the PTC response fast, especially applicable to the security protection demand of miniaturization, high energy density battery.

This invention relates to the field of battery manufacturing technology, and more particularly to a needle winding mechanism. The needle winding mechanism includes a mounting base, a drive assembly, a variable winding diameter assembly, and a diaphragm clamping assembly. The drive assembly includes a drive plate and a first elastic member, one end of which is connected to the inner wall of a receiving chamber, and the other end of which is connected to one end of the drive plate. The drive plate has a first cam groove, a second cam groove, and a third cam groove. The variable winding diameter assembly includes a first housing, a second housing, a first connecting plate and a first cam connected to each other, and a second connecting plate and a second cam connected to each other. The diaphragm clamping assembly includes a third housing, a fourth housing, a diaphragm movable plate and a third cam connected to each other, the third cam being slidably connected to the third cam groove, the third housing being connected to the mounting base, and the fourth housing being fixedly connected to the diaphragm movable plate. This needle winding mechanism has a simple and compact structure, improves integration, reduces size, saves installation space, and saves costs.

This invention provides an energy storage element and its manufacturing method, as well as an energy storage device and its manufacturing method, which enable improved design freedom for installation. One embodiment of the energy storage element includes a laminated body having a strip-shaped first electrode component and a strip-shaped second electrode component stacked on top of each other, and having a first region and a second region different from the first region. The laminated body has a first winding portion where the first region is wound around a first winding axis, and a second winding portion where the second region is wound around a second winding axis different from the first winding axis.

This invention belongs to the field of foam metal production and processing technology, specifically relating to a method for preparing micron-sized foam copper and its application. The method for preparing micron-sized foam copper includes the following steps: mixing: mixing and stirring copper powder, modified polyurethane microspheres, and adhesive; compounding and calendering, pre-drying and precision rolling, sintering, cleaning, drying, and slicing. The foam copper obtained by the method of this invention has micron-sized pores, high porosity, large specific surface area, and good thermal insulation properties.

Disclosed in the present application are a winding member assembly, a winding device and a winding method. The winding member assembly comprises a first winding member and second winding members, the first winding member comprising two first sub-winding members capable of moving with respect to each other in a first direction, and the second winding members being respectively arranged on the two sides of the first winding member in a second direction. In a first state, the outer peripheral walls of the second winding members and the outer peripheral walls of the first sub-winding members are located on the same preset cylindrical surface. In a second state, the second winding members are located inside the preset cylindrical surface, and at least part of each second winding member extends into accommodating chambers via corresponding mating ports, such that the width of the winding member assembly in the second direction in the second state is smaller than the width of the winding member assembly in the second direction in the first state.

The application discloses a preparation method and application of a carbon fluoride / niobium pentoxide mixed positive electrode. The niobium pentoxide and a carbon precursor are mixed and ball milled according to a certain proportion, and then a gas phase fluorination is carried out on the mixture to prepare a carbon fluoride / niobium pentoxide composite material. The carbon fluoride / niobium pentoxide positive electrode is prepared by using a homogenate coating method, and the positive electrode is used in a lithium / carbon fluoride primary battery.

An ultrasonic welding head comprises a welding head main body and first welding teeth; the welding head main body is provided with a welding surface, the first welding teeth protruding from the welding surface; the first welding teeth comprises a plurality of tooth parts, the plurality of tooth parts respectively being a first tooth part to an m-th tooth part which are successively arranged in the protruding direction of the first welding teeth; the n-th tooth part is arranged on the end surface of the end of the (n−1)th tooth part away from the welding surface, the end surface of the end of the (n−1)th tooth part away from the welding surface exceeding the n-th tooth part, and 2≤n≤m. An ultrasonic welding device, an electrode assembly, a battery cell, a battery, and an electrical device.

Disclosed in the present application are a separator, a preparation method for a separator, and an electrochemical device. The separator comprises a bonding layer, and a base film and a gel film which are respectively arranged on two sides of the bonding layer. In the present application, the gel film has relatively good ductility and deformation resistance, is not prone to be being pierced or still completely covers a pierced position after being pierced, such that the separator still plays a role in separating positive and negative electrodes; and the base film has relatively good shape-retaining capability and self-supporting performance. The base film and the gel film are respectively provided on the two sides of the bonding layer, such that the gel film and the base film are bonded into a whole under the bonding action of the bonding layer, and thus when there is an external force acting in the vertical direction of the separator, the separator deforms but is not prone to breaking, thereby delaying the breakage of the separator and improving the stability and safety of a battery.

This invention relates to an oil-based homogenization method for power lithium primary batteries. The positive electrode slurry is prepared using a solvent with a low DN value and a highly conductive and high specific surface area conductive agent. The positive electrode slurry comprises electrolytic manganese dioxide, high-power fluorinated carbon, VC (Cabot conductive carbon), low aspect ratio vapor-grown carbon fiber reinforcement (VGCF), polyvinylidene fluoride (PVDF), and a solvent with a low DN value. By selecting the solvent and conductive agent, PVDF can be effectively dissolved while avoiding side reactions between the carbon-fluorine half-ionic bonds in the manganese dioxide-high-power fluorinated carbon composite material and the solvent during the homogenization process.

The utility model discloses a kind of lithium battery insulation bag bottom supports, including bottom plate, the surface of its contact with lithium battery cell is provided with the insulation buffer layer for insulation;Side fixed plate, it is symmetrically set to the both end side wall of bottom plate;The inside of the side fixed plate has the adjusting buckle for fixing bottom plate and lithium battery cell;The inside of the adjusting buckle is provided with the protection assembly for the buffer protection of adjusting buckle, the utility model is set to the inside of the side wall of side fixed plate of the both sides of bottom plate with movable adjusting buckle, so that installer adjusts the position of adjusting buckle according to the positioning hole of different specifications lithium battery cell, lithium battery cell is installed, further increase the utilization of bottom support.

To provide a collecting pin having a novel structure.SOLUTION: The present application provides a collecting pin, a cover assembly, and a battery. The battery includes the cover assembly. The cover assembly includes: a cover provided with a mounting hole; a terminal post inserted through the mounting hole and connected to the cover via an insulating sealing member; and a collecting pin. The collecting pin includes a main body, and a groove structure is provided on the outer circumferential surface of the main body. One end of the main body is connected to the terminal post.SELECTED DRAWING: Figure 1

The application discloses a preparation method and application of a lithium primary battery positive electrode slurry. First, a binder is added into an organic solvent for dissolution, and carbon nanofibers are added to prepare a conductive glue solution; meanwhile, carbon fluoride and manganese dioxide are dry-mixed to obtain a dry-mixed material; then, the conductive glue solution is added into the dry-mixed material for mud-like kneading stirring; conductive carbon black slurry is added twice for stirring and mixing; finally, the viscosity is adjusted by adding an organic solvent, and vacuum degassing is performed to complete the preparation of the slurry. Through the design of the adding sequence and adding mode of the materials, and through the selection of specific conductive agents and the control of the adding mode of the conductive agents, the dispersibility of the materials is remarkably improved, the agglomeration problems among the carbon fluoride, the conductive agents and the binder are avoided, and the poor sedimentation stability problem caused by the large difference between the physical and chemical properties of the carbon fluoride and the manganese dioxide is avoided, so that the prepared positive electrode slurry is uniform and stable, and the rate discharge performance of the battery is improved.

The present technology relates to an electrochemical cell element comprising a compound of formula (I). The invention also relates to methods for trapping hydrogen sulfide (H2S). More specifically, described herein are compounds comprising at least one H2S-trapping group and at least one linear or branched aliphatic group having at least 10 carbons, wherein the aliphatic group is optionally substituted, compositions, electrolytes, coated particles, and electrode materials comprising same, and also electrochemical cells comprising these H2S-trapping compounds.

The application discloses a fluorinated carbon material and a preparation method and application thereof, and the method comprises the following steps: (1) putting a carbide into a fixed bed reactor, and vacuumizing to 0.005-0.1 kPa; the carbide is SiC; (2) after heating to 200-600 DEG C, inert gas is introduced, the pressure of the reaction system is kept to 10 kPa-95 kPa, then inert gas containing fluorinated reagent is continuously introduced, and reaction is carried out at 200-600 DEG C for 4-96 hours; the fluorinated reagent is a mixed gas of hydrogen fluoride and gas phase fluorinated substance; (3) the product obtained in the step (2) is soaked with an alkali solution, cleaned with deionized water until neutral, and dried to obtain the fluorinated carbon material. The preparation method can make the uniform distribution of fluorocarbon bonds in the fluorinated carbon material, and further improve the specific capacity of the fluorinated carbon material.

The application relates to a battery cell processing method, when performing a lamination operation, first pulling a diaphragm material belt from one side of a lamination table to the other side in a first direction to lay a diaphragm material belt with a relatively long length above the lamination table. Then, a pole piece can be placed on the laid diaphragm material belt, and the diaphragm material belt is cut, so that the lamination of a layer of pole pieces and diaphragm pieces on the lamination table is realized. The above process is repeated until the pole pieces and diaphragm pieces stacked on the surface of the lamination table reach the required number of layers, and the lamination of the battery cell is completed. It can be seen that, by pulling one end of the diaphragm material belt above the lamination table and then cutting to obtain the diaphragm piece material, the rapid laying of the large-size diaphragm piece material can be realized, the efficiency bottleneck of the traditional process is overcome, and the lamination beat and the overall lamination efficiency are significantly improved.

The application discloses a kind of based on screw mechanism's pole piece thinning process and equipment, wherein pole piece thinning process includes: screw mechanism feeding, pole piece forming, pair of roll thinning, three-roll thinning;Pole piece thinning equipment includes screw mechanism, die head, pair of roll thinning mechanism, tension detection mechanism, swing roll adjusting mechanism and three-roll thinning mechanism, screw mechanism is used to deliver pole piece raw material to die head, die head is used to form pole piece raw material and output pole piece to outside, pair of roll thinning mechanism is used to carry out first thinning processing to pole piece, tension detection mechanism is used to detect the tension of pole piece, swing roll adjusting mechanism includes swing roll and can adjust the tension of pole piece by swing roll, three-roll thinning mechanism can be by first mobile steel roller, second mobile steel roller and intermediate steel roller twice thinning to pole piece.This kind of based on screw mechanism's pole piece thinning process and equipment have the advantages such as simple process and equipment, easy operation, when practical application, can improve production efficiency, improve product quality.

This utility model relates to the field of battery manufacturing, and in particular to a novel hot press plate; comprising: an insulating layer, a thermally conductive layer, and a heat-equalizing layer arranged sequentially from top to bottom; wherein, the thermally conductive layer comprises: a plurality of first thermally conductive zones and second thermally conductive zones arranged alternately; this utility model, by setting the first thermally conductive zones and second thermally conductive zones made of materials with different thermal conductivity, enables the hot press plate to have different temperatures, thereby forming different fine pores during hot pressing, thus constructing channels for electrolyte wetting and ion movement.

An ultrasonic welding head (10) comprising a welding head body (1) and a first welding tooth (2), wherein the welding head body has a welding surface (1a), the first welding tooth is convex to the welding surface, the first welding tooth includes a plurality of tooth portions (20), each of which is a first tooth portion (21) to the mth tooth portion, arranged sequentially along the protruding direction of the first welding tooth, the nth tooth portion is provided on one end face away from the welding surface of the (n-1)th tooth portion, and the end face away from the welding surface of the (n-1)th tooth portion extends beyond the nth tooth portion, and 2 ≤ n ≤ m. The invention also relates to an ultrasonic welding apparatus, an electrode assembly (30), a battery cell (100), a battery (200), and an electrical device (1000).

The application discloses a double-coated modified carbon fluoride positive electrode material and a preparation and application thereof. The double-coated modified carbon fluoride positive electrode material comprises a hydrophilic modified carbon fluoride base body, a nano-silver particle layer coated on the surface of the hydrophilic modified carbon fluoride base body, and a manganese dioxide particle layer coated on the surface of the nano-silver particle layer. The silver particle with good conductivity and the manganese dioxide with suitable loading are uniformly coated on the surface of the carbon fluoride, so that the ion conductivity and the electronic conductivity of the carbon fluoride positive electrode material are effectively improved, the high-rate discharge capacity of the carbon fluoride battery is greatly improved, and a high gram capacity is maintained.

The application provides a current collecting needle, a cover plate assembly and a battery, and relates to the technical field of batteries. The current collecting needle comprises a body and a protruding block; the protruding block is arranged on the outer circumferential surface of the body. By arranging the protruding block on the body, on the one hand, the structural strength of the body can be increased, so that the current collecting needle can be prevented from being damaged due to insertion into the positive electrode, thereby facilitating the guarantee of the structural integrity of the current collecting needle; on the other hand, the surface area of the current collecting needle can be increased, so that the contact area between the current collecting needle and the positive electrode can be increased. In this way, the current collecting capacity of the current collecting needle can be increased, thereby improving the reliability of the lithium sub-battery.

The application belongs to the technical field of batteries, and particularly relates to a three-dimensional porous double-alloy current collector for a metal lithium negative electrode, a metal lithium negative electrode and a primary / secondary battery. Zinc is electrochemically deposited on a pretreated foam copper surface to obtain a zinc-plated modified foam copper three-dimensional framework; the zinc-plated modified foam copper three-dimensional framework is placed in a tubular furnace for high-temperature calcination to form a three-dimensional porous Cu 0.64 Zn 0.36 and Cu5Zn8 double-alloy phase; and then a three-dimensional porous double-alloy current collector is formed by corrosion in an ammonia solution. The three-dimensional porous double-alloy phase can be corroded to make the three-dimensional porous double-alloy current collector have a large specific surface area, which is beneficial to reduce the local current density and reduce the formation of dendrites; the electrochemically active Cu5Zn8 has excellent lithium affinity, significantly reduces the lithium deposition overpotential, guides the uniform deposition of lithium, and further reduces dendrites. The electrochemically inert Cu 0.64 Zn 0.36 exhibits excellent structural stability and can effectively inhibit the volume change in the lithium deposition / stripping process.

The disclosure provides an electric core laminating process, an electric core laminating device and an electric core, and relates to the technical field of lithium batteries. The electric core laminating process comprises the following steps: inserting a cut positive electrode sheet between a first diaphragm and a second diaphragm to form a positive electrode composite sheet; inserting the positive electrode composite sheet between an uncut first negative electrode sheet and a second negative electrode sheet; forming a third diaphragm on the side of the first negative electrode sheet away from the positive electrode composite sheet and forming a fourth diaphragm on the side of the second negative electrode sheet away from the positive electrode composite sheet to form a composite electrode sheet; cutting the composite electrode sheet to form a composite unit sheet; and alternately laminating the composite unit sheet and the cut single positive electrode sheet to form an electric core, so that the lamination efficiency can be improved.

A lamination device includes a rack, a positive electrode sheet die-cutting apparatus, a negative electrode sheet die-cutting apparatus, a lamination apparatus, a separator unreeling apparatus and a separator pulling apparatus. The positive electrode sheet die-cutting apparatus includes a positive electrode sheet unreeling mechanism, a positive electrode sheet V-notch punching mechanism, a positive electrode sheet cutting mechanism, a positive electrode sheet detection mechanism and a positive electrode sheet conveyor line. The negative electrode sheet die-cutting apparatus includes a negative electrode sheet unreeling mechanism, a negative electrode sheet V-notch punching mechanism, a negative electrode sheet cutting mechanism, a negative electrode sheet detection mechanism and a negative electrode sheet conveyor line. The lamination apparatus includes a lamination table. The lamination device further includes a positive electrode sheet pre-positioning apparatus, a negative electrode sheet pre-positioning apparatus, a conveying apparatus, a battery cell splitting apparatus and a discharging manipulator.

The utility model discloses a kind of lithium battery winding machine rubberizing device, including conveying part, down pressure piece, supporting part and feed part;The conveying part is located above supporting part and is slidably installed on supporting part, the down pressure piece is fixedly installed on conveying part, two feed stations are provided on the supporting part, two feed parts are detachably installed at the feed station, double-sided adhesive tape is installed on the feed part;Conveying roller is installed on the conveying part, the positive and negative pole roll material is conveyed by the conveying roller, the conveying part is above different feed stations on supporting part by sliding, to replace double-sided adhesive tape;The utility model is replaced by double feed station design and modularization feed part, when also need not stop longer time, greatly improve production efficiency and continuity.

The disclosed concept relates to lithium-ion and lithium metal batteries comprising methods of preparing multi-component alloy (MCA) systems with body-centered cubic (bcc) crystal structures as anodes and current collectors, wherein the lithium-ion or lithium metal battery is dendrite free throughout the charge and discharge processes of the battery. The MCA systems include the following alloy compositions: (i) 40 atom % iron, 40 atom % aluminum or gallium, and 20 atom % magnesium, or (ii) 10 atom % iron, 40 atom % aluminum or gallium, and 50 atom % magnesium, or (iii) 50 atom % iron, 40 atom % aluminum or gallium, and 10 atom % magnesium.

The utility model discloses a lithium battery thermal composite structure, it relates to the field of lamination process and equipment. Including positive sheet, negative sheet and diaphragm, the upper and lower surface of positive sheet all are with diaphragm thermal composite, and positive sheet and diaphragm constitute thermal composite positive sheet, and thermal composite positive sheet and negative sheet are interleaved, and the thermal composite positive sheet is formed single sheet thermal composite positive sheet through thermal cutting knife cutting diaphragm. The utility model not only can reach the effect of thermal composite, can also effectively reduce the short -circuit rate of core, promotes the qualified rate, reduces the cost.

This invention discloses a battery discharge processing device, relating to the field of battery discharge processing technology. The invention includes two electrically retractable bases and a support plate fixedly mounted on the upper side of the two electrically retractable bases. A water tank is mounted on the upper side of the support plate. A conveyor and a mounting plate are respectively mounted on the upper side of the two electrically retractable bases, with the conveyor fixedly connected to the side of the mounting plate. Multiple U-shaped guide frames are arrayed on the bottom surface of the support plate along the transmission direction of the conveyor. A first electrically driven push rod connected to the U-shaped guide frames is mounted on the bottom surface of the support plate. Two electrode telescopic rods penetrating the U-shaped guide frames are connected to the bottom of the water tank. A second electrically driven push rod corresponding to the U-shaped guide frames is mounted on the upper side of the mounting plate. This invention helps reduce the likelihood of insufficient spacing between the conductive rods and the conveyor due to spring fatigue, thus reducing the probability of normal contact between the battery and the conductive rods; it also reduces operator workload and improves battery discharge efficiency.

The application belongs to the field of synthesis of organic high-energy compounds, and particularly relates to two novel polynitro-pyrene energetic compounds and a synthesis method and application thereof. The two novel polynitro-pyrene energetic compounds are 1,2,3,6,8-pentanitro-pyrene (PNP) and 1,2,3,6,7,8-hexanitro-pyrene (HNP) respectively. The synthesis method is to use pyrene as a starting material, and to react with a nitration reagent under heating conditions to efficiently synthesize PNP and HNP in one step. PNP and HNP have significant application potential as high-energy explosives or energetic components. In addition, the polynitro-pyrene energetic molecules can also be applied to lithium primary batteries as positive active materials. The theoretical specific capacity of PNP and HNP is up to 1883 mAh g ‑1 and 2044 mAh g ‑1 , which is the highest level of all reported primary battery positive materials.

The utility model discloses a battery case and monomer battery, this battery case includes the lower casing for accommodating electric core and the sealing element for sealing liquid injection hole, and the lower casing and sealing element are all fixedly connected to the upper casing, and the upper casing is rectangular board, and is equipped with liquid injection hole on one corner, wherein, the radius of liquid injection hole is recorded as R, and the distance of the center point of the circle of liquid injection hole to the nearest side edge of the upper casing is recorded as L1, and 0.1mm<=L1-R<=2mm. A battery case and monomer battery, the structure and position of setting liquid injection hole make that the battery case can keep the strength of having, and can effectively guarantee the sealing of liquid injection hole, simplify the manufacturing process simultaneously, effectively guarantee the safety of battery, improve the service life of battery.