261results about "Dry cells" patented technology

The utility model relates to the technical field of alkaline battery processing, in particular to an alkaline battery manganese ring pressing structure which comprises a working table, an L-shaped bracket and a lifting block, a material conveying bin is arranged on one side of the top of the working table, a material mixing bin is arranged on one side of the top of the material conveying bin, and a first motor is installed on the top of the material mixing bin through bolts; a spiral stirring rod is arranged in the mixing bin; a second motor is installed on one side of the conveying bin through bolts, a spiral conveying rod is arranged on the inner side of the conveying bin, and a limiting ring is arranged on the side, corresponding to the conveying bin, of the top of the workbench. A turning cover is turned over to inject positive electrode powder manufacturing raw materials into a mixing bin, then a first motor drives a spiral stirring rod to rotate to evenly mix the raw materials, after the raw materials are evenly mixed, a discharging valve is opened to enable the raw materials to enter a conveying bin, and then a second motor is started to drive a spiral conveying rod to rotate so that the raw materials can be evenly conveyed into a film pressing bin. Therefore, the processing efficiency is improved.

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 application discloses a basic zinc-manganese battery diaphragm and a preparation process thereof, and belongs to the technical field of the preparation of a basic zinc-manganese battery diaphragm. The application relates to a polymerization kettle, a transmission device is arranged on the top of the polymerization kettle, and a mechanical seal is arranged between the transmission device and the polymerization kettle. In the application, the downward sliding of the pressure-increasing disc increases the pressure intensity of the polymerization kettle corresponding to the lower part of the pressure-increasing disc, and the upward sliding of the pressure-increasing disc gradually restores the pressure intensity of the polymerization kettle corresponding to the lower part of the pressure-increasing disc. According to the chemical kinetics principle, increasing the pressure can increase the collision frequency of reactant molecules, thereby accelerating the reaction rate. For the polymerization reaction of olefin monomers, appropriate pressure increase is helpful to shorten the reaction time, improve the production efficiency, and make the reactants more fully contact and react, thereby reducing the residue of unreacted monomers, improving the utilization rate of raw materials, and simultaneously changing the pressure intensity of the lower part of the pressure-increasing disc in a small range, which can play a role in defoaming to a certain extent.

The invention discloses a stretchable current collector, a preparation method thereof and an application of the stretchable current collector in an omnidirectional stretchable zinc-manganese microbattery, and the stretchable current collector is prepared by compounding a conductive composite filler and an elastic polymer to prepare a high-modulus conductive nano-material, and then laser engraving a snake-shaped interdigital pattern on the surface of the conductive nano-material. By compounding the modulus-enhanced snakelike interdigital pattern with the soft substrate rubber, a certain modulus gradient is formed at an interface, the deformation resistance of the current collector is enhanced, the strain can be buffered in any stretching direction through the backing-off motion of the snakelike wire and a modulus-regulated strain redistribution mechanism, and the high deformability is achieved. According to the current collector, high loading capacity of an active material can be achieved, a stretchable micro battery with excellent stretchability and excellent electrochemical performance is prepared, stretching at any angle in a two-dimensional plane can be achieved, the current collector can still be tightly attached to the skin in the movement process of a human body, and the current collector has remarkable advantages in the aspect of long-term wearing and using.

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.

To provide an electrochemically active cathode material for a battery.SOLUTION: An electrochemically active cathode material includes a non-stoichiometric beta-delithiated layered nickel oxide. The non-stoichiometric beta-delithiated layered nickel oxide has a chemical formula. The chemical formula is LixAyNi1+a-zMzO2*nH2O. In the formula, x is approximately 0.02 to 0.20, y is approximately 0.03 to 0.20, a is approximately 0.02 to 0.2, z is approximately 0 to 0.2, and n is approximately 0 to 1. In the chemical formula, A is an alkali metal. The alkali metal includes potassium, rubidium, cesium, and any combination thereof. In the chemical formula, M comprises an alkaline earth metal, a transition metal, a non-transition metal, and any combination thereof.SELECTED DRAWING: Figure 1

To provide an alkaline electrochemical battery.SOLUTION: Alkaline electrochemical cells are provided, wherein dissolved zinc oxide or zinc hydroxide is included at least in the free electrolyte solution, and / or solid zinc oxide or zinc hydroxide is included in the anode, so as to slow formation of a zinc oxide passivation layer on a zinc electrode. Methods for preparing such cells are also provided.SELECTED DRAWING: Figure 1

The present invention provides an alkaline button cell that has excellent load characteristics and high reliability.　An alkaline button cell which is obtained by having a positive electrode that has a positive electrode mixture layer containing silver oxide and a conductive assistant, a negative electrode that contains zinc particles, and an alkaline electrolyte solution contained in a battery container that is composed of an outer package can, a cover plate and a resin gasket, wherein: carbon black and graphite particles are contained as the conductive assistant in the positive electrode mixture layer; and the water content in the battery container is set to 0.63-1 g per 1 g of the zinc particles in the negative electrode.

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.

To provide a technique which can obtain a power storage device having a wound electrode body with high productivity.SOLUTION: A manufacturing method of a power storage device (for example, battery) of one embodiment disclosed herein includes: winding step S2 of winding a positive electrode 22 and a negative electrode 24 through a separator 26 to manufacture a wound body 20A; and pressing step S3 of press-molding the wound body 20A after the winding step S2 to form flat wound electrode bodies 20a, 20b, 20c. In the winding step S2, the separator which has an adhesive layer 6 partially on at least one surface is used. The adhesive layer 6 includes: a first adhesive area 6A; and a second adhesive area 6B. A thickness T1 of the first adhesive area 6A is 1.5 times or more of a thickness T2 of the second adhesive area 6B. Furthermore, herein, the method further includes formation step S1 before the winding step S2.SELECTED DRAWING: Figure 1

The present disclosure provides an alkaline dry battery that can suppress the occurrence of internal short-circuiting during medium-load intermittent discharge. An alkaline dry battery according to the present disclosure comprises a hollow tubular positive electrode (2) that is provided in a battery case (1), a gel-like negative electrode (3) that is filled in a hollow part of the positive electrode (2), and a separator (4) that is disposed between the positive electrode (2) and the negative electrode (3), wherein the negative electrode (3) contains a zinc powder and a surfactant. The negative electrode (3) further contains a sulfate in the range of 0.01-0.5 mass%, in terms of sulfuric acid ions with respect to the mass of the negative electrode.

To restrain liquid spill of alkaline battery for a long period of time.SOLUTION: An alkaline battery includes a bottomed cylindrical case having an opening end portion, a power generating element accommodated in the case, and a sealing unit for sealing the opening end portion. The power generating element includes a hollow cylindrical positive electrode, a negative electrode filled in the hollow of the positive electrode, and a separator interposed between the positive electrode and the negative electrode. The opening end portion has an annular groove that is recessed inward and supports the sealing unit, and the end face of the negative electrode on the opening end portion side is covered with a gel-like shielding layer. The gel-like shielding layer contains an alkaline electrolyte and cross-linked polyacrylic acid. The content of the cross-linked polyacrylic acid in the gel-like shielding layer is 2.0% by mass or more and 3.0% by mass or less.SELECTED DRAWING: Figure 1

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.

To provide an alkaline battery in which a negative electrode mixture is less likely to leak.SOLUTION: An alkaline battery 1 includes: a bottomed cylindrical positive electrode can 2 having a bottom face on which a positive electrode terminal is formed; a cylindrical positive electrode mixture 3 provided inside the positive electrode can 2; a cylindrical separator 7 provided on the inner peripheral side of the positive electrode mixture 3; a negative electrode mixture 5 filling the inner peripheral side of the separator 7; a current collector rod 6; a gasket 14 having a support part 41 and an annular outer peripheral part 42 and closing an opening 18 of the positive electrode can 2; a negative electrode terminal plate 12 provided opposite the separator 7 with the gasket 14 sandwiched therebetween; a first facing part 421 facing the inner peripheral surface 7a of the separator 7 at an end on the negative electrode terminal plate 12 side; and a second facing part 422 facing the outer peripheral surface 7b of the separator 7 at an end on the negative electrode terminal plate 12 side. A buffer part 43 is formed on the outer peripheral part 42, and the first facing part 421 and the second facing part 422 are provided at positions avoiding the buffer part 43 as viewed along the central axis C of the positive electrode can 2.SELECTED DRAWING: Figure 2

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.

To suppress the amount of release agent added to a positive electrode in order to prevent a positive electrode from cracking when the positive electrode is removed from a molding die.SOLUTION: A battery manufacturing method includes granulating a first powder containing manganese dioxide MnO2 and graphite C, separating the first powder into a plurality of second powders having different particle sizes, separating each of the plurality of third powders from the plurality of second powders, generating a positive electrode mixture by mixing the plurality of third powders, and molding the positive electrode mixture into a positive electrode.SELECTED DRAWING: Figure 2

To provide a battery capable of improving structural efficiency with a simple structure.SOLUTION: A battery includes an electrode laminate. End face current collectors are disposed on both surfaces of the direction of lamination of the electrode laminate. Internal current collectors are laminated inside the electrode laminate. Each internal current collector has a connection part extending from the side surface of each electrode laminate. The connection part extends in the direction of lamination along the side surface of the electrode laminate and is arranged on the same surface as at least one end-surface current collector.SELECTED DRAWING: Figure 1

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 secondary battery with a novel structure with flexibility, in which the decrease in capacity and the deterioration of the secondary battery due to, when a secondary battery including a plurality of positive electrode current collectors and a plurality of negative electrode current collectors is curved, variation occurring in distance between the positive electrode current collectors and the negative electrode current collectors where a battery reaction occurs and variation in speed of the battery reaction in a surface of the current collectors are suppressed.SOLUTION: A gel electrolyte 104 and a separator 103 are provided between a positive electrode current collector 101 and a negative electrode current collector 105 where a battery reaction occurs. By the gel electrolyte, the distance between the positive electrode current collector and the negative electrode current collector can be kept constant. When a plurality of the positive electrode current collectors and a plurality of the negative electrode current collectors are stacked, they are disposed such that their surfaces where a negative electrode active material layer 106 is not applied are in contact with each other, for example. Thus, the contact surface with lower friction can be formed and the stress due to the difference between the inner diameter and the outer diameter of the curvature when the secondary battery is curved can be relieved.SELECTED DRAWING: Figure 1

The invention relates to a preparation method and application of a gelatin-based carbon dot compound. The preparation method of the gelatin-based carbon dot compound comprises the following steps: adding gelatin into a solvent, swelling and dissolving to obtain a gelatin solution; putting the gelatin solution into a hydrothermal kettle, keeping the temperature at a certain temperature, and taking out to obtain a hydrothermal product solution; putting the product liquid subjected to hydrothermal treatment into a centrifugal machine, centrifuging, and taking out supernatant liquid; and drying the supernate to obtain the gelatin-based carbon dot compound. The gelatin-based carbon dot compound disclosed by the invention can be used as an electrode adhesive and is beneficial to reducing the positive electrode impedance of the zinc-manganese battery, the polymer layer can form a network structure and is beneficial to keeping the positive electrode structure stable, and an electrode prepared from the gelatin-based carbon dot compound has high specific capacity and excellent cycling stability.

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

To provide an alkaline battery capable of preventing a short circuit between a negative electrode material and a positive electrode material.SOLUTION: A alkaline battery includes a cylindrical battery can, a cylindrical positive electrode material loaded in the battery can along its inner peripheral surface, and a cylindrical separator member arranged inside the positive electrode material. The alkaline battery further includes a cylindrical negative electrode material loaded inside the separator member, a gasket member that seals an opening of the battery can, and a partition plate arranged inside the separator member and partitioning between the negative electrode material and the opening of the separator member.SELECTED DRAWING: Figure 1

This application relates to a housing sealing structure and a battery. The housing sealing structure of this application includes a cover plate, an elastic seal, and a housing body. The elastic seal wraps around the edge portion of the cover plate; the housing body includes a housing bottom plate and a border. One end of the border is connected to the housing bottom plate, and the other end is bent at multiple places to form a fixing groove; wherein, the cover plate is connected to the fixing groove through the elastic seal, and at least one pressure relief through hole is provided on the border and at the position of the fixing groove. Therefore, the fixing groove of this application is formed by bending the housing at the border, so that the bending sections with protrusions and depressions of the housing can form multiple regions with sudden changes in compression ratio with the elastic seal, forming a curved sealing route to make the sealing effect more reliable; furthermore, the setting of the pressure relief through hole in this application enables this application to have an explosion-proof and pressure relief function related to the elastic deformation of the elastic seal, and because the deformation related to the compression ratio of the housing sealing structure in this application is relatively small, the explosion-proof and pressure relief sensitivity of this application is higher.

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 cell is provided. An exemplary electrochemical cell may 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 the cathode may define an interfacial area y, and the separator may define a thickness x, where a relationship between the interfacial area y and the separator thickness x is defined between # imgabs0 #.

The application discloses a battery cylinder powder feeding machine, which comprises a powder feeding frame, a first driving motor arranged on the powder feeding frame, a powder feeding rotating disc in transmission connection with the output end of the first driving motor, a plurality of powder feeding through holes arranged in a circumferential array around the rotating axis of the powder feeding rotating disc on the powder feeding rotating disc, a powder filling mechanism arranged in the rotating direction of the powder feeding rotating disc on the powder feeding frame in sequence, a powder filling mechanism comprising a powder stacking box, a conveying device, a powder filling box, a linear driving device, a lifting plate, a powder filling rod, a powder filling plate, a quantitative mechanism comprising a quantitative rod and a powder cutting assembly, and a powder feeding rod connected to the bottom side of the lifting plate, and the bottom end of the powder feeding rod can enter and exit at least one of the powder feeding through holes. After the processes of powder filling, powder pressing and powder quantifying, the powder is pressed into the battery cylinder, the powder amount pressed into the battery cylinder can be more accurately controlled, and the production efficiency of the battery is improved.

There are provided an aqueous electrolyte solution having an extended potential window, in particular, an aqueous electrolyte solution whose potential window is further wider than those exhibited by conventional concentrated aqueous electrolyte solutions, and an aqueous electrolyte solution in which the cycle characteristics can be improved. A non-aqueous electrolyte solution capable of achieving a higher energy density is provided, the non-aqueous electrolyte solution containing easily available and inexpensive materials and having further improved characteristics. One aqueous electrolyte solution of the present embodiment contains a salt of at least one selected from the group consisting of sodium, magnesium, potassium and lithium, and a chaotropic additive. One other non-aqueous electrolyte solution of the present embodiment contains a salt of at least one selected from the group consisting of sodium, magnesium, potassium and lithium, and a chaotropic additive.