1022 results about "Battery electrode" patented technology

A diagnostic device, a battery manufacturing system, a battery pack, an electric vehicle, and a diagnostic method are provided. The diagnostic device according to the present invention is a diagnostic device for diagnosing the states of first to n-th active materials (n is a natural number of 2 or more) included in a battery electrode (the electrode is a positive electrode or a negative electrode), and includes: a profile acquisition unit configured to acquire a target electrode profile indicating a correspondence relationship between the capacity and voltage of the electrode; and a diagnostic unit configured to generate first to m-th simulation electrode profiles (m is a natural number of 2 or more) from predetermined first to n-th reference active material profiles, individually compare the first to m-th simulation electrode profiles with the target electrode profile, and diagnose the states of the first to n-th active materials based on the comparison results.

A positioning and clamping apparatus includes a hoisting unit including a support plate, two piston members, two first actuators, two hoisting plates, and an interconnection plate; a transporting unit including a second actuator, two movement rods, and a transporting plate; and a micro adjustment positioning unit including a limiting plate, two follower plates, two sliding members, a third actuator, and a positioning plate. The positioning and clamping apparatus is used for cell electrode plate groups, lead bridges, and lead heads of a lead-acid battery.

An air-coupled ultrasonic scanning platform for an air-coupled ultrasonic non-contact metrology of battery electrodes that maps the local variation in density and thickness, and detect defects during electrode casting and drying, includes: piezocomposite air-coupled transducers (Ultran) at 0.5 to 1 MHz that provide sufficient air coupling to enable sound waves to travel through air from a transmitting transducer, through the thin film electrode coated on metal current collector, and then into the receiving transducer. Non-contact, air-coupled ultrasound may be used as a technique for evaluating battery electrode films. An analytical model was derived from fundamental acoustic wave propagation principles to determine acoustic density. Voltage gain or acoustic density maps of electrode films revealed features that are not visually apparent, attributed to mass gradients.

Systems and apparatus may carry out analysis of battery physical phenomena, and characterize batteries based on phenomena occurring in particular time and / or frequency domains. These systems may be additionally responsible for charging and / or monitoring a rechargeable battery. Examples of battery physical phenomena include mass transport (e.g., diffusion and / or migration) in battery electrolytes, mass transport in battery electrodes, and reactions on battery electrodes.

Systems and apparatus may carry out analysis of battery physical phenomena, and characterize batteries based on phenomena occurring in particular time and / or frequency domains. These systems may be additionally responsible for charging and / or monitoring a rechargeable battery. Examples of battery physical phenomena include mass transport (e.g., diffusion and / or migration) in battery electrolytes, mass transport in battery electrodes, and reactions on battery electrodes.

This application provides a battery electrode detection and control system that can improve the yield of electrode sheets. The electrode detection and control system is applied to an electrode coating system, which includes an unwinding device, a first-side coating device, a first-side drying device, and a winding device arranged in sequence. The electrode detection and control system includes a first detection device disposed between the unwinding device and the first-side coating device. The first detection device is used to detect the size of the area to be coated on the first surface of the electrode substrate output by the unwinding device, wherein the first surface is perpendicular to the thickness direction of the electrode substrate.

The present application relates to the technical field of lead-acid battery electrode, aiming at the problem of thick lead paste on the existing lead-acid battery plate, large resistance during charging and poor rate discharge performance of the battery, a preparation method of lead-acid battery membrane electrode is disclosed, comprising the following steps: adding a binder to the prepared lead paste, rolling the lead paste containing the binder on the lead skin to form a lead paste film layer, immersing the lead skin and the attached lead paste film layer in a sulfuric acid solution, and solidifying and drying after taking out; the binder is polytetrafluoroethylene emulsion or a binder containing polytetrafluoroethylene emulsion. Unlike the high molecular film attached to the surface of the lead-acid battery plate in the prior art, the present application obtains a thin film electrode with thin thickness, uniform active material dispersion, large active material and current collector contact area and good conductivity, and has the advantages of large rate charge and discharge cycle.

The invention discloses an electrode health diagnosis method for a silicon-carbon negative electrode battery with a self-adaptive voltage range, and relates to the technical field of battery control, and the method comprises the steps: obtaining a quasi-static open-circuit voltage discharge curve according to a low-rate discharge test of the silicon-carbon negative electrode battery in an aging process, and measuring the total battery capacity; analyzing and extracting the silicon content in the battery; reconstructing a silicon-carbon composite electrode curve according to the silicon content, and performing inversion calculation of a voltage reconstruction model to obtain electrode parameters; the method comprises the following steps: acquiring charging fragment data of a silicon-carbon negative electrode battery in a circulation process, extracting charging time sequence characteristics based on equal interval voltage alignment and relaxation voltage characteristics after full charge according to the charging fragment data, and constructing a corresponding binary mask array; and constructing an estimation model, and performing supervised learning to obtain a trained estimation model for performing diagnosis of the electrode health parameters according to the charging fragment data, thereby effectively improving adaptability and accuracy during electrode health diagnosis.

The invention discloses a storage battery electrode plate strength test system, and relates to the field of electrode plate strength test.The storage battery electrode plate strength test system comprises a multi-angle tool device and an array type impact test device.The multi-angle tool device comprises a base, a first tool platform, a second tool platform and a tool side plate, the first tool platform is rotationally installed on the base, and the second tool platform is rotationally installed on the tool side plate; the second tool platform is rotationally installed on the first tool platform, the rotation axis of the first tool platform is perpendicular to the rotation axis of the second tool platform on the horizontal plane, the array type impact testing device comprises an impact bottom plate, a lifting driving plate and impact rods, the impact rods are arranged on the impact bottom plate in a sliding and penetrating mode, and the impact rods are arranged in a rectangular array mode. The lifting driving plate is arranged above the impact bottom plate, a plurality of driving columns are arranged on the lifting driving plate in a rectangular array mode, each driving column is provided with an impact rod, the driving columns are detachably connected with the impact rods, simulation is conducted by accurately adjusting the tool angle, and it is ensured that a test scene is highly matched with the actual working condition.

A powder dispensing apparatus having an elongate wedge-shaped hopper including one or more fluidized plates is described. The powder dispensing apparatus can be positioned above a pair of calender rolls to distribute a powder, such as a dry electrode material onto the calender rolls. Such fluidized wedge shaped hopper advantageously allows for an accurate and / or controlled rate of powder distribution across or substantially across the length of a calender roll.

A positioning apparatus includes a support structure including a top plate and legs extending downward from four corners of the top plate; a hoisting unit including a first hoisting plate, piston members, a second hoisting plate, two pressing blocks, and a first actuator; and a clamping unit including two opposite second actuators and two pushing blocks. The positioning apparatus is used for cell electrode plate groups of a lead-acid battery.

The invention discloses a three-dimensional porous carbon encapsulated V2O5 carbon fiber electrode constructed by in-situ growth and a preparation method and application thereof, belongs to the technical field of aluminum ion battery positive electrode materials, and aims to solve the problems that the intercalation and deintercalation dynamics of AlCl4 in a polyacrylonitrile (Pan)-based carbon fiber is blocked due to disordered graphite structure, and the performance of the Pan-based carbon fiber is influenced. And the material cannot be used as an effective electrode material to be applied to an aluminum ion battery system. According to the preparation method, an in-situ growth technology is adopted, a three-dimensional porous carbon substrate is grown on the surface of carbon fiber, then an orthorhombic system vanadium pentoxide (V2O5) nano material which has high theoretical specific capacity and can realize large-current charging and discharging is packaged in the three-dimensional porous carbon substrate, and the V2O5-based carbon fiber electrode is prepared. According to the electrode, the electrostatic interaction between Al < 3 + > ions and crystal lattices is effectively relieved, the structural advantages of the carbon fibers and the energy storage performance of V2O5 are fully combined, the energy storage effect of the aluminum ion battery is remarkably improved, and a new effective scheme is provided for development of aluminum ion battery electrode materials.

Described herein are electrochemically active-material structures comprising silicon and one or more inert elements, such that these inert elements are chemically and / or atomically dispersed. Also described are negative battery electrodes and lithium-ion electrochemical cells comprising such electrochemically active-material structures as well as methods of fabricating such structures, electrodes, and lithium-ion electrochemical cells. Some examples of atomically-dispersed inert elements include, but are not limited to, hydrogen (H), carbon (C), nitrogen (N), and chlorine (Cl). Unlike silicon, inert elements do not interact with lithium at an operating voltage of the negative battery electrode and therefore do not contribute to the overall cell capacity. At the same time, these inert elements help to mitigate silicon swelling by operating as a mechanical buffer, support structure, and / or additional conductive pathways. Such electrochemically active-material structures can be formed by reacting (chemically or electrochemically) one or more precursors that include silicon and corresponding inert elements.

The invention discloses a battery intelligent thermal management coating based on reversible Diels-Alder reaction and a preparation method and application thereof.The coating is of a multi-layer composite structure and comprises a basic binding layer, a functional thermal management layer and a protective isolation layer, the functional thermal management layer is composed of a functional polymer grafted with furan and maleimide groups, the reverse reaction temperature of the reversible Diels-Alder reaction is 80-120 DEG C, the temperature of the functional thermal management layer is 20-30 DEG C, and the temperature of the protective isolation layer is 20-30 DEG C. And the heat absorption capacity is 500-800J / g. The preparation method comprises the following steps: preparing slurry containing the functional polymer, coating a battery assembly with the slurry, and curing at 80-100 DEG C to form a coating. The coating can be applied to a battery electrode, an electrochemical energy storage device and a battery module, instantaneously absorbs heat through reverse reaction at the early stage of thermal runaway of the battery, and automatically resets after the temperature is reduced, so that circulating reuse is realized. The material is high in heat absorption efficiency, high in response speed, compatible with the electrochemical performance of the battery, capable of effectively reducing the thermal runaway risk of the battery, and suitable for various electrochemical energy storage devices such as lithium ion batteries and sodium ion batteries.

This invention provides an ion-conducting polymer binder for battery electrodes that possesses excellent mechanical properties and ion conductivity. [Solution] The present invention provides a repeating unit of m according to formula (I), and a repeating unit of n according to formula (II), TIFF2026057506000023.tif31170 TIFF2026057506000024.tif58170 Regarding an ion-conducting polymer binder for a positive electrode containing (CH2), R1 is (CH2) x -R3, x is 1-20, and R3 is H or CN; R2 and R5 are alkyl or alkenyl; M is alkali metal, etc.; m / n ratio is 25:1-1:25; m+n is q, q is 50-5000.

The invention provides a lithium ion battery positive electrode material with high interface conductivity and a preparation method thereof, and belongs to the technical field of new energy battery electrode materials. The preparation method of the lithium ion battery positive electrode material comprises the following steps: under the protection of nitrogen, reacting a metal salt solution containing nickel, cobalt and manganese with a precipitator and a complexing agent to synthesize a compact spherical NCM precursor; the preparation method comprises the following steps: uniformly ball-milling NCM, LiOH.H2O, LiF and absolute ethyl alcohol, and carrying out densification sintering to obtain fluorine-doped NCM powder; the preparation method comprises the following steps: mixing LiNO3, NH4H2PO4, urea and deionized water to prepare a precursor solution, uniformly loading the precursor solution on fluorine-doped NCM powder by adopting a rotary evaporation method, and carrying out heat treatment to obtain a lithium phosphorus oxygen nitrogen glass phase coated fluorine-doped NCM composite material; and dispersing the carboxylated multi-walled carbon nanotubes in absolute ethyl alcohol, adding the LiPON coated fluorine-doped NCM composite material and phenolic resin, and carbonizing to obtain the positive electrode material. The obtained lithium ion battery positive electrode material has high interface conductivity, and the long cycle life is remarkably prolonged.

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.

The invention relates to the technical field of electrodes for vanadium batteries, in particular to a preparation method of a catalytically active electrode for a vanadium battery, the catalytically active electrode and application of the catalytically active electrode. The preparation method comprises the following steps: loading a bismuth oxide water-phase dispersion liquid as a precursor on the surface of a graphite felt electrode substrate, placing the graphite felt electrode in an inert atmosphere to carry out a carbon thermal reduction reaction, and carrying out a solid-phase reaction on bismuth oxide and the graphite felt carbon substrate in the inert atmosphere to generate a strongly combined catalytic active site in situ. By pertinently controlling the concentration of the bismuth oxide water-phase dispersion liquid and the temperature of the carbon thermal reduction reaction, active components in the prepared catalytic active electrode for the vanadium battery are uniformly and firmly combined on the surface of a matrix, and high uniformity and high stability are shown. And meanwhile, a loading-first and one-step carbon thermal reduction method is adopted, so that large-scale production can be realized, the electrochemical activity of the product is effectively improved, the uniformity and consistency of the performance can be realized, and the multi-dimensional strict requirements of commercial production on the electrode performance and the manufacturing efficiency are effectively met.

The present invention relates to a system (100) for drying a coated film (1), in particular a battery electrode film, on both sides, comprising a first radiation source module (10a, 10b) for emitting first radiation (11a, 11b) towards a first side (101) of the coated film (1), a second radiation source module (10c, 10d) for emitting second radiation (11c, 11d) towards a second side (102) of the coated film (1), and a transport means (2a, 2b) for guiding the coated film (1) along a feed direction (110) between the radiation source modules. The present invention further relates to a corresponding drying device and a corresponding method (200) for drying a coated film (1) on both sides.

The utility model relates to the field of battery manufacturing, in particular to double-roller equipment for a solid-state battery pole piece, which comprises a feeding assembly, a double-roller assembly, a receiving assembly, a first tray and a second tray, the solid-state battery pole piece in the first tray is fed into the roller assembly through the feeding assembly, the solid-state battery pole piece is rolled through the roller assembly, and the rolled solid-state battery pole piece is contained in the second tray through the receiving assembly. Moreover, the guide rollers can ensure that the solid-state battery pole piece has certain tension and is kept flat when being fed into the roller assembly, so that the thinned solid-state battery pole piece does not have wrinkles, a better rolling effect is achieved, the rolling efficiency is improved, and continuous production is realized.

Provided is a method for producing a secondary battery electrode, using PTFE, capable of reducing electrical resistance thereof and achieving excellent strength at the same time, and a binder. A method for producing a secondary battery electrode using a non-aqueous electrolytic solution, including step (1) of preparing a powder composition for producing an electrode by using a binder that is a powder which is composed of a composition essentially including a polytetrafluoroethylene resin and a conductive aid and which is free of an active material, and step (2) of applying a shear force while mixing the composition for producing an electrode to obtain an electrode mixture, wherein step (2) is carried out with a content of a solvent in the composition for producing an electrode being 10% by mass or less.

This invention belongs to the technical field of sodium-ion battery electrode materials, specifically relating to a preparation method and application of an air-stable molten asphalt-coated sodium selenide composite cathode sodium replenisher. The invention first prepares pure-phase sodium selenide nanoparticles in a glove box by room temperature stirring. Then, asphalt is grown in situ on the surface of the sodium selenide through ball milling and high-temperature calcination, thereby forming a core-shell structured sodium selenide composite sodium replenisher material coated with molten asphalt. The resulting composite sodium replenisher is stable in air for extended periods without deterioration, while simultaneously reducing the decomposition potential of sodium selenide and improving its decomposition efficiency. Coupled with a layered oxide cathode, it can achieve cathode sodium replenishment, compensating for the loss of active sodium caused by the growth of the SEI film on the surface of the hard carbon anode. Furthermore, its decomposition product, selenium, can inhibit the lattice oxygen evolution of the layered oxide cathode, improving the structural stability of the cathode and thus effectively enhancing the battery's initial efficiency and cycle performance, demonstrating promising commercial application prospects.

A solar cell electrode and a preparation method therefor. The preparation method for a solar cell electrode comprises: providing a cell sheet precursor of an electrode to be prepared, and forming an electrode slurry at an electrode preset position of the cell sheet precursor; performing sintering processing on the cell sheet precursor having the electrode slurry to obtain an initial electrode, steps of the sintering processing comprising heating, first constant-temperature sintering, first cooling, second constant-temperature sintering, and second cooling, the temperature of the first constant-temperature sintering being 760°C to 800°C and the duration of the first constant-temperature sintering being 3 to 10 seconds, and the temperature of the second constant-temperature sintering being 700°C to 740°C and the duration of the second constant-temperature sintering being 10 to 20 seconds; and performing laser processing on the cell sheet precursor having the initial electrode to obtain an electrode.

A nonaqueous secondary battery electrode binder composition comprising a water soluble vinyl polymer that includes a structural unit (a) derived from a vinyl monomer (A) that has an acid component, a structural unit (b) derived from a vinyl monomer (B) that exhibits a solubility of 8-300 g with respect to 100 g of water at 25°C, and a structural unit (c) derived from a vinyl monomer (C) that exhibits a solubility of not less than 1 g to less than 8 g with respect to 100 g of water at 25°C, wherein the content proportion of the structural unit (c) derived from the vinyl monomer (C) is 5-80 mol% with respect to all monomer units of the water soluble vinyl polymer.

This application relates to a demagnetizing device, a coating equipment, and a coating method for battery electrode sheets. The demagnetizing device includes: a guiding mechanism disposed on a slit-type processing device; a movable component slidably mounted on the guiding mechanism; a magnet unit connected to the movable component, which has the ability to attract magnetic impurities; a transmission component connected to the movable component; and at least one driving mechanism disposed outside the slit-type processing device for driving the transmission component and the movable component. During the driving of the transmission component and the movable component, the magnet unit reciprocates along the guiding mechanism near the workpiece to be demagnetized. This application has advantages such as high demagnetizing safety, high efficiency, and low difficulty in arrangement and operation.

This invention belongs to the field of headphone technology, and specifically relates to a quick-release structure for a headphone battery with elastic contact. It includes: a sound-generating unit with a mounting groove containing a receiver, and at least two inductive elements; and a battery unit with a conductive plate located inside the battery unit. By placing the conductive plate inside the battery unit, leakage caused by contact between the battery electrodes and the external environment is prevented. When the battery unit needs to be placed on the sound-generating unit, the receiver contacts the conductive plate, thereby establishing circuit continuity. This allows for easy assembly and disassembly of the battery unit and the headphone's sound-generating unit. During assembly, simply placing the battery unit on the sound-generating unit allows for automatic alignment and circuit connection through physical contact, eliminating the need for soldering, ribbon cables, or connectors, significantly reducing the difficulty and cost of automated assembly.

The application discloses a multi-compatibility intelligent USB power supply imitation dry battery power conversion device, which comprises a USB power supply input module for connecting with 5V power supply voltage of an external USB power supply; an intelligent voltage conversion and management module electrically connected with the USB power supply input module and used for converting the 5V power supply voltage into 3V direct current output voltage; a battery electrode output module electrically connected with an output end of the intelligent voltage conversion and management module and used for conducting the 3V direct current output voltage to a battery compartment of an external power consumption equipment; and a working state indication module electrically connected with the intelligent voltage conversion and management module and used for directly displaying the working state of the current device to a user, including a power-on state and a fault protection state. The application adopts a synchronous rectification step-down type DC-DC chip to cooperate with current detection and an electronic switch, realizes accurate and stable voltage conversion from 5V to 3V, has an automatic sleep function under no load, and solves the problems of unstable direct power supply voltage and excessively high power consumption of the USB power supply.

The invention relates to the technical field of waste lithium battery recycling, in particular to a battery pole piece laser separation device and method. The laser processing device is provided with a tensioning and unfolding mechanism and a multi-axis laser control mechanism, the tensioning and unfolding mechanism forms a compression roller clamping cavity through compression roller feeding assemblies at the two ends of a rack, and the double clamping cavities synchronously clamp the unwound battery pole piece, so that the battery pole piece is kept tensioned in a laser processing area; and the latter drives the laser to move in a three-dimensional space according to a predetermined route by a mobile end with the laser, and the electrode material and the current collector are separated in a non-contact laser lift-off mode. Dust pollution caused by physical grinding is avoided from the source, mechanical contact is avoided, a current collector cannot be damaged, machining precision is guaranteed through pole piece tensioning, efficient stripping of an electrode material is achieved through laser precise energy control, precise recycling of the material can be achieved in cooperation with sorting, the recycling purity and value are improved, the green and clean production requirement is met, and the device is suitable for large-scale recycling operation.

The purpose of the present invention is to provide a dispersion liquid set which is for a secondary battery electrode and which makes it possible to form a secondary battery electrode that can enable a secondary battery to exhibit excellent cycle characteristics. This dispersion liquid set for a secondary battery electrode comprises: a carbon nanotube dispersion liquid which contains carbon nanotubes 1, a dispersant 1, and a solvent 1; and a fiber dispersion liquid which contains fibers and a solvent 2. The average length of the carbon nanotubes 1 is not more than 1 μm. The average length of the fibers is not less than 1.5 times the average length of the carbon nanotubes 1.

This invention discloses a Na 3.12 Fe 2.44 This invention relates to the field of sodium-ion secondary battery electrode technology, specifically the (P2O7)2 / C cathode composite material, its preparation method, and its application. The preparation method employs a sol-gel method, using sodium acetate, sodium carbonate, or sodium dihydrogen phosphate as the sodium source. A precursor solution is prepared through a reverse feeding process, followed by drying, pre-calcination, cold isostatic pressing pretreatment, and segmented calcination to obtain an ellipsoidal crystalline composite material with an aspect ratio of 1.5-2.0 and a compressive strength ≥180 MPa. Electrodes made from this composite material exhibit 97.3% structural integrity under 100T roller pressing, 91.5% capacity retention after 500 cycles at 2C rate, and a thermal runaway temperature of 182℃. This invention solves the problem of insufficient mechanical properties of high-pressure solid electrodes from the source through crystal structure control. The process is controllable and highly repeatable, and the prepared sodium-ion battery combines high energy density, long cycle life, and high safety.