109results about "Dry cells" patented technology

A method for forming a shaped battery can include: adding electrolyte to a dry battery cell, shaping the battery cell, relieving stress and / or strain from the battery cell, curing the electrolyte, and / or injection moulding a thermoplastic or thermoset around the battery cell. A battery cell can include a cathode, an anode, a separator disposed between the cathode and the anode, a gel polymer electrolyte, an overmoulded housing surrounding the cathode, the anode, the separator, and the gel polymer electrolyte, where the battery cell comprises a non-zero radius of curvature about at least 1 axis.

The invention discloses an alkaline zinc-manganese battery capable of preventing top short circuit, which comprises a steel shell internally and coaxially provided with an isolation pipe; an annular cavity is formed between the isolation pipe and the steel shell, and the annular cavity is filled with an annular positive electrode; a center cavity of the isolation tube is filled with negative electrode zinc paste; an insulating layer for electronic insulation is further arranged in the annular cavity, the insulating layer is in an annular sheet shape, the insulating layer is attached to the top face of the annular positive electrode and completely covers the top face, the inner edge of the insulating layer is tightly attached to the outer wall of the isolation pipe, and the outer edge of the insulating layer is tightly attached to the inner wall of the steel shell. According to the invention, the insulating layer is additionally arranged at the top of the annular positive electrode, so that negative electrode zinc paste overflowing out of the isolation tube after vibration can be prevented from being in contact with the top end of the annular positive electrode under the condition of violent vibration or over-discharge, and the risk of internal short circuit is effectively reduced; moreover, the formula and dosage of the annular anode zinc paste and the annular cathode zinc paste are kept unchanged, the operation is simple, and the electrical property is not sacrificed.

A sealing assembly for a battery cell includes a grommet having an opening with an inner surface. A peg has a peg head and a shaft extending from the peg head. The shaft includes a first portion having a larger diameter and a second portion having a smaller diameter, and the shaft extends through the opening in the grommet. The shaft and the grommet form a first interference fit at a distal end of the opening. A trap gap is formed between the distal end of the opening and the peg head. The trap gap defines a trap for a sealant. A sealant is disposed on the shaft and at least partially in the trap.

The application discloses an acid-activated regenerated brick-mixed micro-powder-metakaolin geopolymer battery and a preparation method thereof. The geopolymer battery is formed by sequentially stacking and pouring a geopolymer positive electrode layer, a geopolymer electrolyte layer and a geopolymer negative electrode layer. The three layers all comprise regenerated brick-mixed micro-powder and metakaolin. The preparation method comprises the following steps: preparing geopolymer positive electrode layer slurry, geopolymer electrolyte layer slurry and geopolymer negative electrode layer slurry respectively; sequentially pouring the positive electrode layer, the electrolyte layer and the negative electrode layer, and vibrating and standing each layer after pouring according to preset parameters, and arranging copper-plated steel fibers in the whole structure by a magnetic field; and curing and coating the whole structure. The geopolymer battery has excellent conductivity, load capacity and interlayer bonding strength, and the whole structure is stable.

Systems, apparatuses, and / or the like are provided. In some embodiments, an electrochemical cell may include a container, a ring-shaped cathode disposed within the container, wherein the ring-shaped cathode defines an open interior, an anode disposed within the open interior of the ring-shaped cathode, a separator disposed between the cathode and the anode, an electrolyte solution, and a current collector electrically connected with a portion of the container, wherein the current collector is positioned at least partially within the anode. For example, current collectors may include a base including a first material that is fixedly attached to the portion of the container and a zinc component composed of a second material and fixedly attached to the base.

A negative electrode mixture layer (12b) has an extension section (38) that extends to the winding starting side from the winding inside of a starting end (40) on the winding starting side of a positive electrode (11). A first distance (d1) between the center (40a) of the starting end (40) in the width direction and a mixture layer starting end (50) on the winding starting side of the negative electrode mixture layer (12b) is greater than at least one of a second distance (d2) between one end (40b) of the starting end (40) in the width direction and the mixture layer starting end (50), and a third distance (d3) between the other end (40c) of the starting end (40) in the width direction and the mixture layer starting end (50).

The invention discloses efficient preparation equipment for KOH electrolyte of an alkaline battery, which comprises a stirring preparation module, a cooling module, an electrolyte storage module and an operation platform, the operation platform comprises a longitudinal aisle and a plurality of transverse aisles, and the plurality of transverse aisles are uniformly distributed at intervals along the longitudinal direction and are vertically butted with the longitudinal aisle to form a latticed channel; the two sides of the end, close to the longitudinal aisle, of each transverse aisle are each provided with a stirring and preparing module, and a plurality of electrolyte storage modules are arranged on the same side of each stirring and preparing module at intervals in the direction of the transverse aisles. And the urgent demand of the alkaline battery industry on a high-end electrolyte preparation system is met.

This primary battery comprises a positive electrode containing 2,5-dimethoxy-1,4-benzoquinone, a negative electrode, and an electrolyte disposed between the positive electrode and the negative electrode. The electrolyte contains a C18-22 alkyl glucoside.

To provide a zinc battery capable of suppressing self-discharge and maintaining capacity for a long time period.SOLUTION: A battery 2 comprises an outer can 10, and an electrode group 22 accommodated in the outer can 10 together with alkali electrolyte. The electrode group 22 is configured by superposing a positive electrode 24 and a negative electrode 26 via a separator 28. The negative electrode 26 at least contains zinc powder. An average particle diameter of zinc particles configuring the zinc powder is 49 to 71 μm. When the liquid amount of the alkali electrolyte is defined as A, and a theoretical capacity of the negative electrode is defined as B, a ratio A / B of the liquid amount of the alkali electrolyte to the theoretical capacity of the negative electrode is 0.30 to 0.60 mL / Ah.SELECTED DRAWING: Figure 1

The invention discloses shaping equipment, a shaping method and a battery production line, and relates to the technical field of battery processing. Wherein the shaping equipment is used for shaping a naked battery cell, the naked battery cell is provided with two openings, the two openings are oppositely arranged along a first direction, and the naked battery cell comprises a first area and a second area which are arranged along the first direction; the shaping equipment comprises a bearing table, a first clamping assembly, a second clamping assembly, a first pressing plate and a second pressing plate. The bearing table is used for placing a naked battery cell; the first clamping assembly is arranged opposite to the first area and clamps the inner wall and the outer wall of the first area. The second clamping assembly is arranged opposite to the second area and clamps the inner wall and the outer wall of the second area. The first pressing plate is arranged opposite to the side, away from the bearing table, of the first area. The second pressing plate is opposite to the side, away from the bearing table, of the second area. According to the invention, the risk of abnormal gaps between the layers of the inner ring of the naked cell can be reduced.

An electrochemical apparatus includes an electrode assembly, a packaging bag and a first connecting layer. The electrode assembly includes an adhesive layer. An outermost current collector of the electrode assembly includes a first bending portion, a second bending portion opposite to the first bending portion and a flat portion connected between the first bending portion and the second bending portion. The adhesive layer is pasted to a surface of the flat portion facing toward a winding center of the electrode assembly. The packaging, bag is configured to accommodate at least a part of the electrode assembly. The first connecting layer is pasted to the first bending portion and to a part of an outer surface of the flat portion. A projection of the second connecting, layer and a projection of the adhesive layer in a direction perpendicular to an outer surface of the flat portion have an overlapping zone.

Electrochemical cells are provided. Exemplary electrochemical cells can include a container, an electrolyte, an anode, a cathode, a current collector, and a separator disposed between the anode and the cathode. In some embodiments, the anode and cathode can define an interfacial area y, the separator defines a thickness x, and the relationship between the interfacial area y and the separator thickness x is 26.532x -0.15 ≦y≦284.5x -0.675 It is defined between.

An electrochemical cell having a cathode comprising a fluorinated carbon nanotube (F-CNT), an anode and a solid electrolyte; wherein the solid electrolyte comprises an electrolyte component comprising i. 5 to 50 wt.% of an alkali metal-containing electrolyte salt, and ii. 50 to 95 wt.% of a polymer. Embodiments do not require a carbon-based conductive-adjuvant in the cathode. The thickness of the solid electrolyte may be least 5 microns. A container comprising cell may have space to allow for thermal expansion thereof. They may be used at elevated temperatures greater than 65 °C. or more, such as in a subterranean well.

The invention is applicable to the technical field of preparation of alkaline manganese battery electrode materials, and provides a uniform mixing method of electrolytic manganese dioxide and graphite, material physical property difference is eliminated through a liquid phase environment, and graphite is efficiently dispersed by adopting two liquid phase pretreatment modes. According to the second scheme, graphite segregation is restrained through buffering of part of electrolytic manganese dioxide (EMD), then the EMD is mixed with the remaining EMD, and the mass ratio of the EMD to graphite meets the requirement of an alkaline manganese battery electrode material; according to the invention, the graphite sheet-shaped / layered conductive structure can be protected, the compaction density of the electrode plate can be obviously improved, the internal resistance can be reduced, the discharge capacity and the test data repeatability can be optimized, and the process is suitable for large-scale production.

The present invention provides a battery that uses a low-pH aqueous solution as the electrolyte while simultaneously suppressing the voltage drop that occurs as discharge progresses and ensuring good discharge characteristics. [Solution] The battery of the present invention has a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte, all contained within an outer casing. The positive electrode contains silver oxide as a positive electrode active material, and the electrolyte is an aqueous solution with a pH of 3 to 12 and containing an alkali metal halide as an electrolyte salt.

The utility model relates to the field of alkaline batteries, in particular to a high-temperature-resistant alkaline battery which comprises a steel shell, a heat dissipation protection assembly is arranged on the outer wall of the steel shell, and the heat dissipation protection assembly comprises the protection sleeve, a first groove body, a second groove body, a fixing needle, a heat conduction sheet and a heat conduction groove; a protective sleeve is fixedly connected to the outer wall of the steel shell, a groove is formed in the upper end of the steel shell, and a protruding block at the upper end of the protective sleeve is placed in the groove. According to the heat dissipation protection assembly, through the heat conduction grooves formed in the heat conduction pieces, the contact area between the heat dissipation protection assembly and air is increased, the positions, close to the outer wall of the steel shell, of the heat conduction pieces are attached to the outer wall of the steel shell, the temperature on the surface of the battery is dissipated through the four heat conduction pieces, and therefore the high-temperature resistance of the battery is improved; and then a plurality of fixing needles are plugged into a second groove body, and the strength of the protective sleeve is improved, so that the risk of liquid leakage caused by overall deformation of the battery when the battery is collided by external force is prevented.

The application relates to a sealing glue coating method of a carbon battery, and belongs to the technical field of carbon batteries. The sealing glue coating method is characterized in that: through intermittent ring coating and coating sequence control of a center annular area, air trapping in a sealing area is reduced, the formation probability of defects such as bubbles, cavities and pinholes is reduced, through continuous annular coating of an outer peripheral annular area along the inner wall of the zinc cylinder port, the adhesion and climbing mechanism is improved, the zinc cylinder interface wetting and the outer peripheral annular filling sufficiency are improved, through segmented staggered bridging coating and subsequent leveling fusion of a top surface bridging covering area, a continuous sealing layer across the area is formed, the thickness transition is dispersed, the start-stop superposition, thickness mutation and stress crack risks are reduced, while the sealing reliability is ensured, the excessive glue coating dependence is reduced, the glue overflow pollution, appearance defects and the risk of occupying effective space are reduced, the consistency and yield are improved, and the problems that the multi-interface annular gap sealing area is prone to local closure, air trapping bubble formation, interface connection deficiency and thickness mutation and stress crack caused by start-stop superposition under continuous coating are solved.

The application relates to the field of alkaline-manganese button cell manufacturing, in particular to a dry-method alkaline-manganese button cell positive electrode powder manufacturing device and a granulation process, which comprises the following steps: S1, powder mixing, mixing electrolytic manganese dioxide, graphite and acetylene black into a positive electrode powder; S2, tablet pressing, extruding the positive electrode powder to shape the positive electrode powder into a positive electrode powder tablet; S3, granulation, crushing the positive electrode powder tablet to shape the positive electrode powder tablet into a positive electrode granule; and S4, sieving, sieving the positive electrode granule, and if the positive electrode granule meets the particle size requirement, separating the positive electrode granule into a finished product of a positive electrode material used for manufacturing alkaline-manganese button cells. The application has the effects of simplifying a production process and reducing the labor intensity of workers.

The invention relates to the technical field of batteries, in particular to a coating composition for improving leakage resistance, liquid absorption and discharge performance of a battery and application of the coating composition. The prepared coating composition comprises the following raw materials in percentage by mass: 10%-25% of a methacrylate-acrylamide block copolymer, 10%-15% of polyvinyl alcohol, 40%-53% of starch, 1%-5% of an inorganic-organic composite corrosion inhibitor, 0.5%-2% of a compound surfactant and the balance of water. The invention also provides a preparation method of the coating composition and an application of the coating composition in a zinc-manganese dry battery, and the coating composition is used for preparing coated paper so as to improve the leakage resistance, liquid absorption and discharge performance of the battery. According to the invention, the methacrylate monomer is introduced into the traditional polyacrylamide hydrogel polymerization process, so that the liquid absorption amount and the liquid absorption rate are remarkably improved, the leakage resistance of the battery is improved, the liquid absorption amount is doubled, the discharge time is prolonged by 10%, and the retention rate reaches 95% or more after the battery is naturally stored for half a year.

This alkaline dry battery comprises a positive electrode, a negative electrode, a separator, and an electrolytic solution. The negative electrode contains zinc alloy particles as a negative electrode active material. The electrolytic solution contains a linear aliphatic secondary amine as an additive. The number of carbon atoms included in the linear aliphatic secondary amine is in the range of 3-13.

The utility model provides a carbon battery capable of preventing a negative electrode from deviating. The carbon battery comprises a zinc cylinder, a negative electrode piece and an insulating compression ring which are sequentially overlapped along the axial direction of the battery, the diameter of the negative plate is greater than the aperture of the central hole of the insulating compression ring; a negative plate region corresponding to the central hole of the insulating compression ring is a negative external region; at least two pits are formed in the edge of the bottom of the zinc cylinder in the circumferential direction at intervals, and protrusions capable of being meshed with the pits in a one-to-one correspondence mode are arranged on the edge of the insulation pressing ring; the negative plate is positioned on the center side of all the bulges, and the inner side surface of each bulge is propped against the outer peripheral surface of the negative plate. According to the carbon battery disclosed by the utility model, the insulation compression ring and the negative plate can be radially limited, so that the negative plate and the insulation compression ring are prevented from radially moving in the assembly process, and the position of the negative electrode external connection area is kept unchanged before and after the heat shrinkage film is packaged.

The application relates to the technical field of batteries, in particular to a composite conductive agent, a preparation method thereof, a positive electrode diaphragm and a dry battery. The composite conductive agent comprises a plurality of modified conductive agents; the modified conductive agent is obtained by annealing treatment of a conductive agent. The modified conductive agent is obtained by annealing means to regulate the surface functional groups of the conductive agent, can be in-situ reacted with a sulfide electrolyte to generate a stable CEI interface layer in the battery charging and discharging process, the interface layer can effectively isolate the direct contact of the electrolyte and the positive electrode material and the conductive agent, and block the continuous occurrence of side reactions such as reduction of transition metals and oxidation of sulfides. 2‑ ​

Provided is an alkaline battery (1) including a positive electrode (5), a negative electrode (7), a separator (6), and an electrolytic solution which are accommodated in a container (8). The electrolytic solution is a potassium hydroxide aqueous solution having a concentration of 40% to 50%. The negative electrode consists of a gel-like negative electrode mixture containing a negative electrode active material and an alkaline aqueous solution. The alkaline aqueous solution contains potassium hydroxide and sodium hydroxide in a molar ratio range of 89:11 to 96:4. The positive electrode consists of a positive electrode mixture including a positive electrode active material containing silver oxide and manganese dioxide, and a blending ratio of manganese dioxide in the positive electrode mixture is 25% to 50% by mass.

This manganese dry battery uses a negative electrode can that includes a battery can and a paste adhered to the inner peripheral surface of the battery can, wherein the paste contains starch particles, and the starch particles include first particles that each have a depression in the surface thereof.

This power storage element comprises an electrode body, wherein the electrode body includes a wound electrode plate, the electrode plate includes a formation part in which an active material layer is formed, and a non-formation part in which the active material layer is not formed. The non-formation part is arranged on one side in the winding axis direction of the electrode plate of the formation part. The formation part has a plurality of recessed parts recessed in the thickness direction of the electrode plate. The formation part comprises a first region including one end in the winding axis direction and a second region including the other end in the winding axis direction. A first opening ratio, which is the opening ratio of the recessed parts in the first region, is larger than a second opening ratio, which is the opening ratio of the recessed parts in the second region.

The goal is to enable high energy density. The dual electrolyte battery includes a cathode, an anode, a catholyte in contact with the cathode, and an anolyte in contact with the anode. The catholyte includes a first gelled electrolyte, and the anolyte includes a second gelled electrolyte. The concentration of the electrolyte in the anolyte is greater than the concentration of the electrolyte in the catholyte.

To provide a flat button battery that can increase the amount of electrolyte impregnated on the positive electrode side without increasing the internal resistance of a battery, and in particular can significantly increase a discharge time of when discharging at a large current.SOLUTION: A flat button battery 1 includes: a bottomed cylindrical positive electrode can 12; and a negative electrode can 22 that is fixed to the inside of an opening 12a of the positive electrode can 12 with a gasket 40 interposed therebetween, and forms a housing space between the negative electrode can 22 and the positive electrode can 12. Therein, the housing space is sealed by provision of a caulked portion in which the opening 12a of the positive electrode can 12 is caulked to the negative electrode can 22 side; the housing space houses a positive electrode 10A, a negative electrode 20, a separator 30, and an electrolyte 50; the positive electrode 10A housed in the positive electrode can 12 is made of a pellet layer; and an electrolyte housing portion 11A is arranged near the outer peripheral wall 12c of the positive electrode can 12 in the pellet layer.SELECTED DRAWING: Figure 1

The seal assembly for a battery cell includes a grommet having an opening with an inner surface. The nail has a nail head and a stem extending from the nail head. The stem includes a first portion having a larger diameter and a second portion having a smaller diameter, and the stem extends through the opening in the grommet. The stem and the grommet form a first interference fit at a distal end of the opening. A trap gap is formed between the distal end of the opening and the nail head. The trap gap defines a trap for a sealant. The sealant is disposed on the stem and is at least partially located within the trap.

The utility model relates to the technical field of alkaline batteries, in particular to a cylindrical alkaline battery with high constant power discharge performance, which comprises a battery steel shell, a battery positive electrode cap, an isolation tube, a first sealing end cover component and a negative electrode cap, the bottom end of the battery positive electrode cap is fixedly bonded with the top end of a second sealing end cover assembly, the interior of the second sealing end cover assembly is spirally attached to the outer side of a first auxiliary crimping assembly, the inner side of the first sealing end cover assembly is spirally connected with a second auxiliary crimping assembly, and the first sealing end cover assembly comprises a sealing end cover body; a first sealing rubber pad is fixedly connected to the bottom end of the sealing end cover body, a conical cylinder is fixedly connected to the top end of the sealing end cover body, and a screw hole is formed in the inner side, close to the lower end, of the conical cylinder. And the safety and the reliability are improved.

The utility model discloses a sealing device for alkaline battery production, which relates to the technical field of battery sealing equipment and comprises a mounting plate, a mounting frame is fixedly mounted at the upper end of the mounting plate, an electric push rod is fixedly mounted at the lower end of the mounting frame, a sealing gluing head is arranged at the output end of the electric push rod, and a fan is arranged at the upper end of the mounting plate. A rotating mechanism is arranged at the upper end of the mounting plate, and a clamping mechanism is arranged at the upper end of the rotating mechanism. By adopting the structure, the bevel gear at the output end of the reciprocating motor is meshed with the transmission bevel gear ring, so that the rotary table connected with the bevel gear ring can rotate back and forth on the mounting plate, and a battery is fixed through the clamping mechanism on the rotary table, so that a fan can conveniently and uniformly air-dry a battery sealing and gluing point.