612 results about "Electrode fabrication" patented technology

An electrode manufacturing system includes a transferring part, a coating part, a drying part, and a heat treatment part. The transferring part is arranged downstream of the drying part to heat the electrode substrate to a high temperature and includes a transfer roller supports and transfers an electrode substrate in a long-sheet shape. The coating part applies an electrode slurry to an electrode current collector. The drying part dries the electrode slurry disposed on the electrode substrate. The heat treatment part is disposed downstream of the drying part along a transfer direction of the electrode substrate and applies heat to the electrode substrate to increase the adhesion of the electrode by changing the crystal phase of the PVdF binder of the electrode substrate during the heat treatment process, thereby preventing the separation of the electrode active material layer. A manufacturing method including the same is also provided.

An electrode manufacturing apparatus according to one aspect of the present disclosure is configured to discharge a liquid to form a resin layer or an inorganic layer on an electrode substrate which is being conveyed in a predetermined direction. The electrode manufacturing apparatus includes a detector, a liquid discharger provided downstream of the detector in the predetermined direction and configured to discharge the liquid to form the resin layer or the inorganic layer, and a controller configured to control a discharge condition of the liquid discharger. Points where a property varies are present on the electrode substrate along a direction intersecting the predetermined direction. The detector outputs pieces of detection information obtained by detecting one of the points in time series, and the controller controls the discharge condition of the liquid discharger based on combined detection information obtained by combining the pieces of detection information.

The present invention relates to: an electrochemical biosensor capable of effectively and sensitively detecting alfuzosin; an electrode applied thereto; a metal-organic framework (MOF) which includes a zinc / cobalt oxide and is applied in manufacturing the electrode; and methods for manufacturing same.

An electrode manufacturing device rolls and transfers a sheet-shaped electrode in which an active material layer is applied to at least any one of a metal foil with a first surface and a second surface which is a back surface of the first surface. At least any one of a rolling roll rolling the electrode and a travel roll rolling and then transferring the electrode comprises a base roll having a predetermined diameter, and having a base surface at an outer circumference thereof; and a step ring being coupled to the outer circumference of the base roll, and having a step surface a diameter of which is greater than a diameter of the base surface. The step ring is detachably coupled to the base roll. A thickness of a step differs from a thickness of the active material layer.

The invention discloses a Prussian blue type composite positive electrode material and a preparation method and application thereof, and the Prussian blue type composite positive electrode material provided by the invention is composite powder containing a Prussian blue type positive electrode material, a conductive agent, a binder and a functional additive, the mass ratio of the Prussian blue positive electrode material to the conductive agent to the binder to the functional additive is (90-99): (1-5): (0-5): (0-0.5). According to the Prussian blue composite positive electrode material provided by the invention, the components are uniformly distributed, the Prussian blue composite positive electrode material has the characteristics of high compaction, easy dispersion, relapse resistance, high conductivity and the like, and the Prussian blue composite positive electrode material can be directly used for wet homogenization and can also be directly used for dry electrode manufacturing.

The invention belongs to the technical field of lithium ion batteries, and discloses a carboxyl-containing copolyimide binder, a lithium ion battery silicon negative electrode, a lithium ion battery and a preparation method, and polyamide acid is prepared by using a carboxyl-containing diamine monomer, an amino-terminated long aliphatic chain diamine monomer and an anhydride monomer as raw materials; and carrying out chemical imidization, precipitation and washing on the polyamide acid to obtain the carboxyl-containing copolyimide binder. The prepared carboxyl-containing copolyimide binder has good solubility in a conventional electrode manufacturing solvent, and the solution system of the obtained carboxyl-containing copolyimide binder is uniform and stable. When the carboxyl-containing copolyimide binder is applied to preparation of a silicon negative electrode of a lithium ion battery, the carboxyl-containing copolyimide binder can generate dual covalent interface interaction with silicon active material particles and conductive material particles, so that the migration efficiency of lithium ions in an electrode system is remarkably improved, the transmission dynamics performance is enhanced, and the high-rate charge-discharge capacity of the battery is effectively improved.

The invention relates to a management method and device for manufacturing a dry electrode of an intelligent manufacturing digital twin system. The method comprises the steps of collecting manufacturing data generated in the manufacturing process under the condition that the dry electrode is manufactured through a physical manufacturing device; wherein the manufacturing data comprises manufacturing state data of the physical manufacturing device and manufacturing product data of the dry electrode; constructing a production line model corresponding to the dry-type electrode according to the manufacturing data through a digital twin model device; wherein the production line model comprises a simulation object of the physical manufacturing device; and analyzing the manufacturing data and simulation data generated by the production line model through the information physical cloud integration device to obtain a manufacturing result of the dry-type electrode. By adopting the method, the manufacturing process of the dry electrode can be detected in real time, the corresponding production line model is constructed to simulate a manufacturing scene, and reasonable and effective data analysis is performed, so that problems in production can be found in time, production interruption is reduced, and the production efficiency is improved.

A negative electrode manufacturing device for a secondary battery includes a dual slot die and a coating roll. The dual slot die includes an upper block, a middle block, a lower block, a first slot, and a second slot. The first slot is a gap between the upper block and the middle block for discharging a first negative electrode slurry, and the second slot provided is a gap between the middle block and the lower block for discharging a second negative electrode slurry. The coating roll is disposed opposite the first and second slots and transfers the electrode sheet. The upper block, the middle block, and the lower block comprise an upper lip, a middle lip, and a lower lip forming an outlet at each front end and exhibit magnetism of the same polarity. A method of manufacturing using the same is also provided.

Various embodiments of the teachings herein include an apparatus for hyperspectral imaging of electrode webs during electrode manufacturing for battery cells. An example includes: a hyperspectral spectroscopy unit with a line scan camera for imaging, the spectroscopy unit configured: to capture hyperspectral images of the forward-moving electrode web at a predefined location of the electrode manufacturing, to ascertain inhomogeneities of the electrode web from the images, wherein an inhomogeneity is a deviation of the chemical composition of the layers or of the particle size distribution from predefined target variables, and to ascertain and save a local position of the inhomogeneities in the longitudinal direction of the electrode web; and a deflection roll over which the electrode web is guided. The line scan camera captures the images at the position of the contact surface between the deflection roll and the electrode web.

A device and method for manufacturing an electrode are disclosed. An electrode manufacturing device includes an electrode sheet supply roll transferring a pre-electrode sheet which forms a face and another face; a position adjustment roll adjacent to the electrode sheet supply roll and receiving the pre-electrode sheet from the electrode sheet supply roll; a laminating roll and a pressurizing roll which receive the pre-electrode sheet from the position adjustment roll and face each other; an active material supply roll facing the laminating roll and providing an active material to the laminating roll; and a heater proving heat to a heating area of the pre-electrode sheet positioned between the electrode sheet supply roll and the position adjustment roll. The pre-electrode sheet and the active material are inserted into and discharged from between the laminating roll and the pressurizing roll.

To provide a method for manufacturing an electrode and a method for manufacturing a battery which can reduce generations of failures in the manufacturing.SOLUTION: According to an embodiment, there is provided a method for manufacturing an electrode including the steps of: applying a slurry including at least one of a niobium-containing oxide and a titanium-containing oxide and water to a collector and obtaining a structure; drying the slurry and forming an active material containing layer; pressing the structure; laminating plural structures to obtain the laminate body, drying the laminate body while pressing both outermost layers of the laminate body, thereby setting the water content amount of the active material containing layer to determine by the Karl-Fischer method to be 600 mass ppm at a maximum.SELECTED DRAWING: Figure 1

The present invention relates to a training device and method for predicting adhesion to an electrode, an electrode monitoring device and an electrode manufacturing method using a prediction model trained using same, and a lithium secondary battery manufactured thereby. The training device for predicting adhesion to an electrode according to one embodiment of the present invention comprises: a memory in which a near-infrared spectrum for an electrode and a measurement value for the adhesion of the electrode are stored; a prediction model which receives a differential average of a plurality of wavenumber sections including characteristics for the adhesion of the electrode in the near-infrared spectrum so as to predict the adhesion of the electrode; and a processor which receives the near-infrared spectrum, performs a first-order differentiation on the near-infrared spectrum, extracts the plurality of wavenumber sections from the first-order differentiated near-infrared spectrum, calculates a differential average of the plurality of wavenumber sections, and transmits the differential average to the prediction model, wherein the processor may receive a prediction value predicted by the prediction model for the adhesion of the electrode, and train the prediction model such that the prediction value is close to the measurement value.

The present invention relates to an electrode manufacturing apparatus, comprising: an unwinding unit for continuously supplying an electrode current collector wound into a roll shape; the plasma processing unit is used for performing plasma processing on the surface of the expanded electrode current collector; an active material applying unit that applies an active material slurry to a surface of the electrode current collector such that the active material layer is disposed thereon; a drying unit for drying the active material layer disposed on the surface of the electrode current collector; and a winding unit for winding the electrode current collector having the dried active material layer into a roll shape, in which the plasma processing unit includes: a guide roller applying tension to the electrode current collector; and at least one plasma generating device inside the guide roller, and the plasma generating device sprays a gas in a plasma state at a surface of the electrode current collector in contact with the guide roller to perform a surface treatment on the surface of the electrode current collector.

An electrode fabrication system is provided. The system includes a powder feeding unit, a powder charging unit, a carrier roller, a carrier roller charging unit and a calendering unit. The dry powder particles applied from the powder feeding unit are charged and attached onto the carrier roller surface through an electrostatic process by applying a proper bias voltage. The charged powder attached on the surface of carrier roller are released and deposited onto a moving foil web to form a powder coating layer through an electrostatic process by applying a proper bias voltage. The powder coating layer is conveyed to the calendering unit and densified with or without heat to form an electrode.

A coating step of coating a slurry obtained by dispersing an electrode material on a current collector foil in a solvent to obtain a coating film, and a drying step of drying the coating film while transporting the current collector foil on which the coating film is formed in a drying furnace, the coating film, three regions divided along the transport direction, a central portion disposed in the center of the width direction, and an end portion disposed on both sides of the central portion, respectively, a drying step drying each end portion of the coating film by a heat source of low energy density, drying the central portion of the coating film by a high energy density heat source, an electrode manufacturing method.

The present disclosure provides a method of controlling binder crystallization during a drying process in electrode fabrication. A method of producing an electrode for battery fabrication includes: drying an electrode material in a compaction phase; applying an electric field to the electrode material during the compaction phase; and adjusting the frequency and magnitude of the electric field to control crystallization of the binder material. The electrode material includes a binder material. The crystallization rate of the binder material is increased or decreased.

The present disclosure relates to an electrode for an electrochemical device, and more particularly, to a dry electrode and a method for manufacturing the same. According to an aspect of the present disclosure, there is provided a new method for manufacturing a dry electrode free of wrinkles in an uncoated portion having no electrode active material layer on a current collector.

A dry electrode manufacturing apparatus according to embodiments includes: a fine powder supply portion that supplies a fine powder; a first roller and a second roller that calender the fine powder supplied from the fine powder supply portion to form an electrode film; and a third roller and a fourth roller that stretch the calendared electrode film through the first roller and the second roller. The first roller rotates in a first direction with a first velocity, the second roller rotates in a second direction different from the first direction with a second velocity, the third roller rotates in a third direction different from the second direction with a third velocity, the fourth roller rotates in a fourth direction different from the third direction with the fourth velocity, a linear velocity in the second direction of the second roller is greater than a linear velocity in the first direction of the first roller, a linear velocity in the third direction of the third roller is greater than the linear velocity in the second direction of the second roller, and a linear velocity in the fourth direction of the fourth roller is greater than the linear velocity in the third direction of the third roller.

The present invention discloses an extrusion molding device for manufacturing graphite electrodes, which belongs to the technical field of graphite electrode molding devices, including a table and a pressure plate arranged above the table, wherein a plurality of pressure heads are fixedly installed on the bottom surface of the pressure plate, and a plurality of molding holes cooperating with the pressure heads are opened on the top surface of the table, wherein a push block is slidably assembled inside the molding hole, and the bottom end of the push block is rotatably connected to a lifting rod, which passes downward through the table and is threadedly connected to the table; when the pressure head moves out of the molding hole, it drives the ring to rotate again, and when the push block just pushes the molded product to move above the table, the slider can move out of the slide groove, thereby preventing the lifting rod from continuing to move upward. Based on the above structure, even if the amount of raw materials in each molding hole is different, when the push block pushes the molded product to move just above the table, the slider can be disengaged from the slide groove, so that the push block remains stable, which is conducive to the push plate to push out each molded product.

A method of producing a battery electrode includes applying an electrode material onto a surface of a current collector, the electrode material comprising a binder material having binder particles, initiating a drying process to dry the electrode material, and applying a non-uniform electric field to the electrode material during the drying process. The non-uniform electric field defines a magnitude gradient to generate dielectrophoretic forces on the binder particles, thereby moving the binder particles.

The invention relates to the technical field of battery electrodes, and discloses an integrated electrode and a preparation method thereof. The method comprises the following steps: pre-oxidizing, carbonizing and cutting a fiber precursor to obtain carbonized fiber; activating the carbonized fibers to obtain porous fibers; combining the porous cellosilk with an energy storage battery electrode active material through a vapor deposition reaction to obtain active cellosilk; and coating the active fibers with a conductive and / or ion-conductive coating material to obtain the integrated electrode. Through the synergistic effect of the porous carbon skeleton structure design, the vapor deposition active substance and the surface coating, the problem that an active material is easy to separate from a current collector in the charging and discharging process of a traditional electrode is solved, the electrode manufacturing process is simplified, and the prepared self-supporting integrated electrode has high specific capacity, excellent cycling stability and rate capability and is suitable for large-scale popularization and application. The material can be applied to energy storage equipment such as lithium ion batteries, sodium ion batteries, lithium-sulfur batteries, solid-state batteries and the like.

A magnetic alignment device includes a first magnet part and a second magnet part, a thickness measuring part, and a control part. The first and second magnet parts accommodate an electrode sheet therebetween and the thickness measuring part measures a thickness of a negative electrode slurry disposed on the electrode sheet. The control part adjusts the separation distance of the first and second magnet parts. The magnetic alignment device measures the thickness of the negative electrode slurry applied on the negative electrode current collector in real time and controls the intensity of the magnetic field by adjusting the separation distance of the magnet part according to the measured negative electrode slurry thickness, and has an advantage of uniformly high alignment degree of the crystal faces of the carbon-based negative electrode active material contained in prepared negative electrode active layer.

The invention provides a polyimide porous carbon-based silicon-carbon negative electrode material as well as a preparation method and application thereof, and belongs to the technical field of lithium battery materials. The high-strength polyimide is prepared from diamine and dianhydride monomers with rigid structures, the porous carbon material prepared from the polyimide has high mechanical strength and structural stability, the structural integrity of porous carbon can be kept in the electrode manufacturing and using process, collapse or pulverization caused by stress or high temperature is reduced, and the service life of the electrode is prolonged. And the long cycle performance is improved. Polyimide is rich in nitrogen element, and nitrogen doping naturally exists in porous carbon formed after pyrolysis, so that electric contact between silicon particles and the porous carbon is enhanced, and the conductivity and rate capability of the material are improved. Therefore, the silicon-carbon negative electrode material prepared by the invention has the advantages of stable structure, good conductivity, high capacity and ultra-long cycle, and solves the problems of long preparation period, low conductivity, insufficient skeleton strength and the like of the existing porous carbon substrate.

The invention discloses a split type support for installing an electrode contact, a directional electrode and an implantable stimulation system, the split type support comprises a plurality of first split assemblies arranged along the axial direction, and the first split assemblies are provided with hollow inner cavities; a plurality of first installation positions distributed at intervals in the circumferential direction can be formed between every two adjacent first split assemblies in a matched mode, and the first installation positions are suitable for installing sheet-shaped electrode contacts. The split type support for installing the electrode contact can reduce the manufacturing difficulty of the directional electrode, is convenient to disassemble and assemble, simplifies the welding of the electrode contact and the guide wire, and overcomes the technical problems of high process difficulty, low manufacturing efficiency, low yield and high cost caused by the fact that the directional electrode contact is prepared by adopting a mode of preparing the electrode by grinding in the prior art.

The present invention relates to an electrode connection apparatus including a transfer unit configured to transfer a start portion of a standby electrode roll in a state of gripping the start portion, a leading unit configured to move upwards in a state of gripping the start portion of the standby electrode roll transferred by the transfer unit, a first connection unit configured to fix the standby electrode roll transferred by the leading unit, a second connection unit configured to fix an end portion of a moving electrode roll, and a taping unit configured to connect the standby electrode roll and the moving electrode roll to each other, whereby it is possible to automatically connect the electrode rolls to each other during an electrode manufacturing process performed as a roll-to-roll process.

An electrode manufacturing device is provided. The electrode manufacturing device includes a pressing roll configured to apply pressure to an uncoated part of the electrode, wherein the pressing roll comprises a central part, a first end part and a second end part, wherein the uncoated part comprises an insulating coated part and a non-insulating coated part, wherein the first end part is adjacent to a boundary between the insulating coated part and the non-insulating coated part, wherein the second end part is located at a portion far away from the insulating coated part, and wherein a first outer diameter of the central part connected to the first end part is greater than a second outer diameter of the central part connected to the second end part.

To provide a manufacturing method for an electrode with high adhesion between a current collector and an active material layer.SOLUTION: A manufacturing method for an electrode for a secondary battery includes an unevenness forming step for forming unevenness on the surface of a metal foil which is a current collector, and an active material layer forming step for forming an active material layer by placing coated powder particles, formed by coating the surface of the active material powder particles with a non-aqueous binder, on the surface of the metal foil.SELECTED DRAWING: Figure 1

The present invention relates to an electrode connecting apparatus, comprising: a conveying unit configured to convey the starting portion of a backup electrode roll while clamping the starting portion; a leading unit configured to move upward while clamping the starting portion of the backup electrode roll conveyed by the conveying unit; a first connecting unit configured to fix the backup electrode roll conveyed by the guiding unit; a second connecting unit configured to fix the end portion of a moving electrode roll; and a tape applying unit configured to connect the backup electrode roll and the moving electrode roll to each other, thereby enabling the electrode rolls to be automatically connected to each other during an electrode manufacturing process performed in a roll-to-roll process.

The utility model provides film pressing equipment and an electrode manufacturing system. The film pressing equipment comprises a film forming roller, a fixed roller, a first calendering roller and a second calendering roller which are sequentially arranged according to a material feeding sequence, wherein the circumferential surfaces of the film forming roller, the fixed roller, the first calendering roller and the second calendering roller are all provided with wear-resistant layers, and the thicknesses of the wear-resistant layers are sequentially increased according to the material feeding sequence; the wear resistance of the surfaces of the compression rollers is enhanced, the wear degree of the surfaces of the compression rollers is reduced, the wear degree of the compression rollers can be relatively balanced, the service life of the compression rollers can be prolonged, and the film pressing equipment is ensured to run for a long time with stable performance.

The present invention pertains to a binder for a secondary battery positive electrode, to a method of preparation of said electrode and to its use in a secondary battery. The invention also relates to the secondary batteries manufactured by incorporating said electrode.