1796 results about "Cell fabrication" patented technology

Provided are a winding shaft, a cell manufacturing apparatus, and a cell manufacturing method. The winding shaft is used for winding plates and includes: a winding shaft body including a first winding surface; an adjustment member configured to be mounted to the winding shaft body and movable simultaneously in an axial direction of the winding shaft and in a radial direction of the winding shaft, where the adjustment member includes a second winding surface, and the first winding surface and the second winding surface are configured to wind the plates jointly; and an actuator configured to drive the adjustment member to move to change a relative position of the second winding surface with respect to the first winding surface, so as to change a winding circumference of the winding shaft. The winding shaft of the present application can reduce the possibility of or the amount of misalignment between the tabs.

The invention provides base metal conductive paste for a photovoltaic cell and a preparation method, a use method and application thereof, and the conductive paste comprises the following components in percentage by mass: 5-60wt% of oxide coated base metal powder, 27-77wt% of silver powder, 2-5wt% of glass powder, 0.1-3wt% of an antioxidant aid and the balance of an organic carrier; wherein the base metal powder comprises one or more of copper, tungsten, tin, nickel, aluminum and alloy powder of the copper, the tungsten, the tin, the nickel, the aluminum and the alloy powder of the aluminum, and the oxide comprises one or more of silicon oxide, aluminum oxide, titanium oxide and boric oxide. The base metal powder coated with a specific type and a proper amount of oxide is selected and matched with the oxide and the glass powder which are good in compatibility, the manufacturing cost of the conductive paste and the battery can be effectively reduced, meanwhile, the conductive paste is applied to TOPCon and BC batteries, and the battery conversion efficiency can be kept equivalent to or even superior to that of traditional pure silver conductive paste.

A laser welding method for a multilayer tab of a battery cell and a battery manufacturing method, the laser welding method comprising preparing a multilayer tab to be welded, an adapter piece, a welding-assisting part, press-fitting tooling and a laser welding device. The press-fitting tooling comprises a first pressing plate and a second pressing plate. The adapter piece is placed on the first pressing plate; the multilayer tab is placed on the side of the adapter piece away from the first pressing plate; the second pressing plate is pressed against the side of the multilayer tab away from the adapter piece, and the side of the multilayer tab close to the second pressing plate can protrude from at least the edge side of the second pressing plate; and the laser welding device is used to weld the multilayer tab to the adapter piece.

An unwinding device for manufacturing a secondary battery includes an unwinder, a transfer unit, and a correction unit having a rotation shaft. The unwinder is configured for unwinding a coating substrate wound in a roll shape by rotating it around the rotation shaft. The transfer unit includes a first transfer roll disposed closest to the unwinder. The correction unit is configured for correcting (i.e., moving) the position of the rotation shaft with respect to the first transfer roll.

The invention discloses a new energy lithium battery surface defect visual detection method based on a YOLOv8 model, and belongs to the field of new energy lithium battery manufacturing and detection.The new energy lithium battery surface defect visual detection method comprises the steps that S1, a stable data acquisition platform is built; s2, optimizing optical parameters; s3, surface defect images of a plurality of lithium ion batteries are collected for data preprocessing, and a standardized data set is constructed; s4, adopting an improved network architecture deep learning detection engine based on YOLOv8; and S5, inputting the manufactured data set into an improved YOLOv8 model for model training. According to the intelligent detection system based on machine vision and the YOLOv8 model provided by the invention, the precision and robustness of defect identification are remarkably improved while efficient detection is ensured.

A secondary battery manufacturing device is provided that includes a case portion provided with a nozzle configured to face a base material being moved by a coating roll. A cavity portion is positioned inside the case portion, with the cavity portion forming a conduit for transferring a coating solution to the nozzle. A vent portion is provided that has a first side surrounding an inlet to the cavity portion and a second side extends to the outside of the case portion to form a path for discharging gas. A filtering portion is positioned between the cavity portion and the vent portion, with the filtering portion being configured to direct gas contained in the coating solution in a direction toward the vent portion and prevent liquid of the coating solution from being directed to the vent portion.

Provided are a method and an apparatus for continuously dehydrating a paste for manufacturing a lithium-ion secondary battery and recycling a gas used as a drying gas. A method for dehydrating a paste for manufacturing a lithium-ion secondary battery having a viscosity at 100 °C of 30 mPa·s or more and less than 5,000 mPa·s, wherein the paste contains at least one of an electrode active material, a conductive assistant, and a solid electrolyte as a constituent component of a solid content, and contains an organic solvent having a boiling point higher than that of water or having an azeotropic point with water as a dispersion medium, the paste and a drying gas for removing moisture from the paste are brought into contact with each other in a countercurrent or a cross-flow, moisture contained in the paste volatilizes to the gas side from a gas outlet and a gas containing moisture is discharged, and a paste dehydrated to moisture within a range of 1×10 -7 to 1×10 -4 is discharged from a paste outlet. The present invention relates to a method and an apparatus for dehydrating a paste for manufacturing a lithium-ion secondary battery.

The invention belongs to the field of secondary battery manufacturing, and particularly relates to a composite foil current collector welding method.The composite current collector comprises an upper aluminum conducting layer, a middle high-molecular polymer layer and a lower aluminum conducting layer, and the welding method comprises the following steps that S1, micropore machining is carried out on a tab area of the composite current collector, forming a through micropore array; s2, laying a first pure metal foil on the upper surface of the tab area, and laying a second pure metal foil on the lower surface of the tab area; and S3, welding the tab area on which the pure metal foil is laid, so that the first pure metal foil, the upper aluminum conductive layer, the lower aluminum conductive layer and the second pure metal foil form through metallurgical bonding at the position of the micropore. According to the composite foil current collector welding method, ultrasonic energy is highly concentrated on a metal interface at the edge of a micropore, local metallurgical connection is achieved, overall heat input is low, hot melting and carbonization of a middle high-molecular polymer layer are effectively avoided, and an ultrathin metal layer is protected against heat damage.

The invention provides a lithium ion battery defect detection method and system, and relates to the field of battery manufacturing and quality inspection, the method comprises the following steps: acquiring and preprocessing a CT scanning image and infrared thermal imaging data of a lithium ion battery to obtain multi-modal fusion data; performing multi-modal feature extraction based on the multi-modal fusion data to obtain a fourth feature; and based on the fourth feature, obtaining a detection defect log of the lithium ion battery. According to the method, the limitations of low precision, difficulty in type distinguishing, dependence on manual judgment and the like in the aspect of identifying the internal structure defects of the battery in a traditional method are overcome, the accuracy, the automation degree and the result traceability of defect detection are improved, and the method is suitable for high-precision defect detection scenes in links such as lithium ion battery production manufacturing and quality detection.

The invention belongs to the technical field of solid-state batteries, and particularly relates to a battery cell structure of a solid-state battery, the solid-state battery, battery manufacturing equipment and a battery manufacturing process, and the battery cell structure comprises a positive plate, a solid-state electrolyte layer and a negative plate which are arranged in sequence; the solid electrolyte layer is of a waveform structure, micro-nano salient point arrays are arranged on the surfaces of the two sides of the solid electrolyte layer, and self-repairing dynamic interface layers are arranged on the surfaces of salient points; one side, facing the solid electrolyte layer, of the positive plate is provided with a first waveform surface, and the first waveform surface has a gradient pore structure; the negative plate is provided with a second wave-shaped surface, and the second wave-shaped surface is provided with a gradient pore structure; wherein the repairing dynamic interface layer can automatically repair microcracks generated by circulation, and mechanical anchoring of the salient point array is matched, so that the problem of impedance increase caused by interface cracks of a traditional solid-state battery is solved, and the cycle life is remarkably prolonged.

The invention relates to the technical field of battery manufacturing equipment, in particular to automatic pulping equipment. In the primary powder blending mechanism, a first driving piece is used for driving a first push block to drive a sliding barrel to move so as to conduct a discharging through hole, a second driving piece is used for driving a first push rod to push a powder storage bottle back and forth, and the powder storage bottle is used for conveying first powder to a liquid storage container; in the secondary powder blending mechanism, a second rotary driving part is used for driving a powder storage container to be in butt joint with an execution rod through a second supporting frame, a second lifting driving part drives a blocking rod to move through the execution rod, the blocking rod communicates a conical outlet hole, and the powder storage container conveys second powder to a liquid storage container. The liquid preparation mechanism is used for injecting battery liquid into the liquid storage container. According to the automatic pulping equipment disclosed by the invention, the battery pulp with high precision and high quality can be prepared, and the automatic pulping equipment is high in automation degree and high in efficiency.

Methods and systems for executing tracking and monitoring manufacturing data of a battery are disclosed. One method includes: receiving, by a server system, sensing data of the battery from a sensing system; generating, by the server system, mapping data based on the sensing data; generating, by the server system, identification data of the battery based on the sensing data; generating, by the server system, monitoring data of the battery based on the sensing data, the identification data, and the mapping data; and generating, by the server system, display data for displaying a simulated electrode of the battery on a graphical user interface based on the monitoring data of the battery.

According to exemplary embodiments of the present invention, a battery manufacturing method is provided. The manufacturing method includes: a first step of obtaining, for an electrode sheet having a pattern in which coating parts and non-coating parts are repeatedly arranged, pattern indicator data indicating the position of the pattern on the electrode sheet and measurement data and / or inspection data; a second step of associating the pattern indicator data with the measurement data and / or the inspection data, and a third step of generating inter-process monitoring data by making the pattern indicator data for each of a plurality of processes correspond to the same physical position of the electrode sheet.

The invention relates to the field of automation equipment, and provides a trolley positioning device and battery manufacturing equipment. The positioning device comprises a guiding structure and a positioning structure, and the guiding structure is used for guiding the loading trolley so that the loading trolley can advance in the first direction; the positioning structure is arranged on the side, in the first direction, of the guiding structure and used for fixing the loading trolley. According to the trolley positioning device provided by the embodiment of the invention, the positioning precision of the loading trolley is improved.

The invention discloses conductive paste for a BC battery and a preparation method of the conductive paste, and relates to the technical field of photovoltaic battery manufacturing, and the conductive paste is prepared from the following raw materials in parts by weight: 45-65 parts of Cu-coated Ag powder, 3-8 parts of gradient functional glass powder, 5-8 parts of a synergist, 30-40 parts of an organic carrier and 2-4 parts of a dispersant. The gradient functional glass powder is composed of an inner layer high corrosion phase PbO-B2O3-ZnO system and an outer layer slow release phase SiO2-Al2O3-ZrO2 system, and the mass ratio of the inner layer to the outer layer is 3: 1. The conductive paste for the BC battery is small in contact resistance, low in single-chip consumption, good in windowing effect and high in conversion efficiency when being applied to the BC battery.

A rechargeable lithium metal battery comprising (i) an anode including an anode current collector, but initially no lithium metal or lithium metal alloy deposited on the anode current collector when the battery is made; (ii) a first solid state electrolyte layer deposited on the anode current collector; (iii) a cathode including a cathode current collector and a cathode active layer (including particles of a cathode active material and a conductive additive) deposited on the cathode current collector; (iv) a second solid state electrolyte layer (in physical contact with the first electrolyte layer) disposed on the cathode active layer; and (v) an interface enhancer composition (IEC) in ionic communication with the anode and the cathode. Preferably, the IEC permeates into the cathode active layer and comes in contact with particles of the cathode active material.

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.

The utility model discloses pole piece manufacturing equipment for a double-faced adhesive tape frame and a solid-state battery production line, and belongs to the technical field of solid-state battery manufacturing, the pole piece manufacturing equipment for the double-faced adhesive tape frame comprises a material storage mechanism, a forming mechanism, a first conveying mechanism, a turn-over mechanism, a second conveying mechanism and a third conveying mechanism, the material storage mechanism is used for accommodating pole pieces; the forming mechanism is configured to form a rubber frame on the surface of the pole piece; the first conveying mechanism is configured to transfer the pole pieces at the storage mechanism to the forming mechanism; the turn-over mechanism is configured to turn over the pole piece; the second conveying mechanism is configured to transfer the pole piece from the forming mechanism to the turn-over mechanism; the third conveying mechanism is configured to be capable of conveying the pole piece to the material storage mechanism from the turn-over mechanism, the rubber frame can be formed on the two faces of the pole piece through one forming mechanism, and the occupied field space is reduced.

The invention relates to the technical field of battery manufacturing equipment, in particular to a multi-angle cooperative control method and system of battery cell module tab bending equipment, data acquisition: acquiring geometric characteristics, material attributes, real-time positions, bending stress and equipment operation state data of tabs through vision, laser and force sensors, optimizing parameters, and determining the bending state of the tabs. A deep reinforcement learning algorithm is utilized, a bending strategy model is trained based on collected data, bending angle, strength and speed parameters are adjusted in real time, bending errors and material damage risks are minimized, trajectory planning is carried out, a cross-scale multi-physics field simulation engine is utilized to integrate electrochemical, mechanical and heat conduction models, a bending forbidden zone map is generated, and the bending forbidden zone map is obtained. Global optimization and strategy generation are carried out on a multi-axis motion track by combining a particle swarm optimization algorithm, a state space and an action space are defined through a DRL dynamic strategy generation layer, a bending strategy is generated by combining a reward function and adopting a cloud edge cooperative training mechanism, and accurate control is carried out.

The invention belongs to the technical field of battery manufacturing, and particularly relates to a powder feeding device and dry-method electrode film forming equipment. The powder feeding device comprises a vibration structure, a first shell and a second shell, the first shell is provided with a first containing cavity, the second shell is arranged below the first shell in a stacked mode and provided with a second containing cavity, and the first shell is provided with a feeding port allowing powder to enter the first containing cavity and a first discharging port communicated with the first containing cavity. A plurality of filtering holes communicated with the second containing cavity are formed in the cavity bottom of the first containing cavity at intervals, and the vibration structure is connected with the second shell and used for driving the first shell and the second shell to vibrate synchronously, so that part of powder in the first containing cavity flows out of the first containing cavity from the first discharging opening; the other part of powder in the first containing cavity flows into the second containing cavity through the filtering holes, and the second shell is provided with a second discharging opening allowing the powder to flow out of the second containing cavity in the first direction. According to the invention, the distribution uniformity of the powder on the diaphragm can be improved.

The invention is applicable to the technical field of battery production equipment, and provides winding equipment and battery manufacturing equipment, and the winding equipment comprises a compounding mechanism used for unwinding a first pole piece, a first diaphragm and a second pole piece, and pressing the first pole piece, the first diaphragm and the second pole piece to form a composite piece body; the diaphragm unwinding mechanism is used for unwinding a second diaphragm; and the winding mechanism is arranged on the discharging side of the compounding mechanism, and the winding mechanism is used for winding the composite sheet body and the second diaphragm to form an electrode assembly. The winding equipment is reasonable in layout, and the problem that the space above the winding mechanism is crowded is solved.

The invention relates to the technical field of battery manufacturing equipment, in particular to a settlement detection mechanism and slurry detection equipment. The liquid storage cylinder is provided with a storage space for storing battery slurry; the supporting shaft is rotationally installed on the supporting seat, the supporting frame is rotationally installed on the supporting shaft, and the camera part is installed on the supporting frame and used for detecting the settlement degree of battery slurry in the liquid storage cylinder; the supporting block is mounted on the supporting shaft, and the liquid storage cylinder is rotationally mounted on the supporting block; the output end of the first driving piece is connected with the supporting shaft, and the first driving piece is used for driving the supporting shaft, the supporting block and the liquid storage cylinder to rotate; the second driving part is installed on the supporting shaft, the output end of the second driving part is connected with the supporting frame, and the second driving part is used for driving the supporting frame and the camera part to rotate; the third driving piece is installed on the supporting block, the output end of the third driving piece is connected with the liquid storage barrel, and the third driving piece is used for driving the liquid storage barrel to rotate. The settlement detection mechanism is high in detection precision and high in detection efficiency.

The invention relates to the technical field of battery manufacturing, and discloses an environment-friendly manufacturing method of a high-capacity battery. The method comprises the following steps: firstly, collecting relevant data of sustainable material attributes, green process monitoring and environment footprints, and extracting an initial feature time sequence from the relevant data; a fusion feature set of material-process-environment interaction is extracted, a multi-scale model structure is constructed in combination with data acquisition precision of different making partitions, and multi-resolution feature mapping is generated; performing trend analysis on the time evolution data to generate a battery performance degradation spectrogram; stress response distribution of the core production stage is determined through simulation calculation, and a manufacturing state response data set is obtained; and identifying the number of performance degradation cycles, calculating a residual capacity value by fusing a material degradation model, and evaluating the total life of the battery produced in an environment-friendly manner after integration. According to the method, environmental protection and green consideration of the whole production process is realized through multi-dimensional data fusion and multi-scale analysis.

The invention relates to the technical field of battery manufacturing, in particular to a production process of a diaphragm ending one-way roller based on a winding procedure, which comprises the following steps: acquiring an end face image and a side face image of a naked battery cell wound on a winding machine; based on the interlayer gap uniformity index, determining whether the interlayer gap uniformity of the naked battery cell reaches the standard or not, and according to the difference value, determining the preset pressure and the rotating speed applied to the winding machine by the one-way roller; determining whether the flatness of the side surface of the naked battery cell is qualified or not based on the microscopic fluctuation characterization parameters, and determining the preset number of rerotation turns of the winding machine and increasing the preset pressure according to the relative difference; determining whether the winding stability of the naked battery cell reaches the standard or not based on the batch gap fluctuation rate, determining to increase the tension applied to the battery cell material belt in the winding process of the next batch according to the ratio, and increasing the number of turns of rotation; and after the winding is completed, the gluing machine attaches a termination adhesive tape to the qualified naked battery cell. The winding efficiency of the naked battery cell in the winding process is improved.

The invention provides a machine vision-based soft package battery tab accurate positioning and cutting method and system, and relates to the technical field of battery manufacturing, and the method comprises the steps: collecting front and side images of a soft package battery, and constructing a tab three-dimensional grid model; using a deep neural network to extract connection interface morphology features, and analyzing stress distribution; identifying a stress concentration area by adopting spectral imaging, and determining a cutting safety area; and finally planning a tool path and generating machining parameters. The optimal cutting position of the tab can be accurately identified, the cutting precision is improved, the deformation and damage risks of the tab are reduced, and the service life of the battery is prolonged.

The invention relates to a composition for transfer printing, a preparation method thereof and an electrode grid line preparation method, and relates to the technical field of photovoltaic cell manufacturing, and the composition for transfer printing comprises the following components by weight: 6-40% of polyvinyl alcohol; 0.05-5% of a plasticizer; 3-20% of a coalescing agent; 0.05 to 5% of a surfactant; 1-20% of a hydrophilic material; 0.01%-0.5% of a release agent; 0.01 to 1 percent of a flatting agent; 0.01 to 1 percent of a defoaming agent; and the balance of water. Through reasonable component proportion, the defects of an existing water-soluble film are optimized, and the dissolution speed, the environmental protection property, the mechanical property and the compatibility with a silicon wafer or conductive slurry of the water-soluble film are improved; by adding the surfactant, the hydrophilic material, the plasticizer and the coalescing agent, the flexibility, the tear resistance and the water solubility of the film are improved, so that the film has better mechanical properties, the defect of the traditional PVA film in the aspect of dissolution rate is overcome, and the quick water solubility, the good mechanical properties and the environmental protection property of the film are realized; and the transfer printing effect of the thin film and the adaptability of the thin film to a silicon wafer can be improved.

The invention discloses a preparation method of a high-strength low-resistance functional aluminum current collector, and relates to the technical field of lithium battery manufacturing. The preparation method of the functional aluminum current collector comprises the following steps: adding water into a binder for dispersion, adding aluminum powder and a dispersing agent for high-pressure homogeneous dispersion, adding conductive carbon black and graphite step by step, stirring to obtain carbon-coated slurry, coating the carbon-coated slurry on a tab blank area of the current collector and a welding surface, in contact with the current collector, of an adapter foil, and carrying out vacuum drying to obtain the functional aluminum current collector. And finally, the functional aluminum current collector is prepared through ultrasonic welding. The functional aluminum current collector prepared by the invention has the characteristics of high strength and low resistance, solves the problems of high resistance and low welding strength of the traditional functional aluminum current collector, and is suitable for manufacturing high-performance lithium batteries.

The invention discloses an atomic layer deposition method and structure for an aluminum fluoride enhanced aluminum oxide passivation layer of a TOPCon solar cell. The method comprises the steps that after a boron-doped layer is formed on the front face of a crystal silicon wafer, a passivation layer is formed on the boron-doped layer through an atomic layer deposition technology, specifically, Al2O3 deposition circulation is conducted with trimethyl aluminum as an aluminum source and H2O as an oxygen source, AlF3 deposition circulation with aluminum chloride as the aluminum source and HF or NH4F as a fluorine source is periodically inserted, the proportion of the number of deposition circulation times of AlF3 to the number of deposition circulation times of Al2O3 is 1: (1-10), and the passivation layer is formed on the boron-doped layer through the atomic layer deposition technology. And an alternating layer structure with the total thickness of 5-10 nm is formed. According to the invention, an AlF3 layer is periodically inserted in an Al2O3 deposition cycle, so that an Al2O3 / AlF3 superlattice structure is formed. According to the structure, the interface passivation effect is remarkably improved, hydrogen atom overflow is reduced, and the ultraviolet aging resistance is enhanced. The method is compatible with an existing ALD production line, is suitable for high-efficiency TOPCon battery manufacturing, and has a good industrial application prospect.

A method of manufacturing an electrode for use in battery manufacturing includes drying an electrode material in a compact phase, applying an electric field to the electrode material during the compact phase, and adjusting a frequency and strength of the electric field to control crystallization of a binder material. The electrode material includes a binder material. The crystallization rate of the binder material is increased or decreased.

The invention relates to the technical field of battery manufacturing, in particular to a battery cell rubber coating device and a battery cell rubber coating method. The battery cell rubber coating device comprises a rubber collecting mechanism and a rubber pressing mechanism, the rubber collecting mechanism comprises a rubber collecting driving assembly and a rubber collecting assembly, a rubber collecting hole is formed in the rubber collecting assembly, the hole wall of the rubber collecting hole comprises a rubber collecting hole wall, and the rubber collecting hole wall inclines towards the direction of a center hole of a battery cell from the side close to the end face of the battery cell to the side away from the end face of the battery cell. The glue collecting driving assembly can drive the glue collecting assembly to move towards the direction close to the end face of the battery cell, so that the hole wall of the glue collecting hole folds the glue paper extending out of the end face of the battery cell towards the direction of a center hole of the battery cell, and the glue pressing mechanism comprises a glue pressing driving assembly and a glue pressing assembly; the glue pressing driving assembly can drive the glue pressing assembly to move towards the direction close to the end face of the battery cell, so that the glue pressing assembly penetrates through the glue collecting hole to extrude the folded glue paper on the end face of the battery cell. According to the battery cell rubber coating device, the rubber coating yield and the rubber coating consistency are improved.