1334 results about "Cell fabrication" patented technology

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.

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 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 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 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.

The technology described herein is directed towards a reconfigurable intelligent surface (RIS) based on microelectromechanical systems (MEMS) technology, in which metallic MEMS micro-actuators are integrated into unit cells of the RIS. Dual ring-shaped metallic cantilevers, resulting from unit cell fabrication, operate as electrothermal actuators in the unit cell's resonating pattern. A controlled voltage can be separately applied to each ring-shaped cantilever, deforming (bending up) each ring at its non-anchored (free) portion from its generally flat non-actuated state via joule heating. The amount of vertical displacement of the free portion of each ring when voltage is applied separately changes the structure of the unit cell's geometry based on each amount of applied voltage, whereby analog-like tuning of the unit cell's characteristics (including phase shift) is obtained. When combined with the voltage-controlled phase shifts of other unit cells of the RIS, beamforming of a reflected incoming electromagnetic wave is facilitated.

The utility model discloses an alkaline battery steel shell high-speed coating production line which comprises a steel shell conveying and sequencing system, a steel shell coating machine, a conducting film spraying system, a drying device and a detecting device. The steel shell conveying and sequencing system, the steel shell coating machine, the drying device and the detection device are sequentially arranged from front to back, the conductive film spraying system is located on the side face of the steel shell conveying and sequencing system, production efficiency is improved, the defective product rate is reduced, manual dependence is reduced, meanwhile, stability and consistency of product quality are ensured, equipment layout is optimized, and the production cost is reduced. The occupied production space is reduced, the environmental adaptability of the production line is enhanced, the flexibility and the market response speed of the production line are improved, and the requirements of the modern battery manufacturing industry for high-efficiency and high-quality production are met.

The invention relates to the technical field of battery manufacturing, in particular to a confidence evaluation method and system for dynamic skipping of a capacity grading process. According to the method, the problem that the parameter interaction cannot be evaluated by a traditional method is solved by analyzing the association of the process processing parameters, the material characteristic parameters and the historical battery capacity and constructing the parameter-capacity mapping matrix, then the confidence reference interval and the design threshold are generated in combination with the process capability index, the adaptive adjustment of the evaluation standard is realized, and the evaluation accuracy is improved. Then combining static historical mapping with dynamic electrical performance through electrical characteristic parameters to obtain a confidence evaluation interval, and meanwhile, calculating an input disturbance coefficient and a quality risk index to realize decoupling judgment of data reliability and real risk, break through the limitation that a traditional method cannot distinguish a fluctuation root, and finally, integrating various indexes so as to realize the prediction of the data reliability and the real risk. And a nonlinear algorithm is adopted to calculate the dynamic skipping confidence coefficient, and flexible processing is performed on the critical-state battery, so that the precise control of the capacity grading process of the lithium ion battery is improved.

The utility model relates to a piece production device, and belongs to the technical field of battery manufacturing. The pole piece production device comprises a negative pressure adsorption mechanism which comprises a negative pressure adsorption assembly, and when a pole piece material belt passes through a cutting station, the negative pressure adsorption assembly is used for adsorbing the pole piece material belt; the lifting driving assembly is used for driving the negative pressure adsorption assembly to move in the vertical direction; the lifting driving assembly is used for driving the negative pressure adsorption assembly to rotate around a first axis, the rotation driving assembly is used for driving the negative pressure adsorption assembly to rotate around a first axis, and the lifting driving assembly and the rotation driving assembly jointly drive the negative pressure adsorption assembly to be switched between a cutting station and a discharging station so that the pole pieces formed at the cutting station can be transferred to the discharging station. The flaking device has relatively high flaking efficiency and flaking qualification rate.

To simplify a configuration of a device that lifts a sheet.SOLUTION: An upstream fixture includes a first portion and a second portion. The first and second portions include a pair of upstream parallel surfaces facing each other across a transport path, a pair of upstream inclined surfaces connected to them, and multiple nozzles that discharge air along the pair of upstream inclined surfaces. A downstream fixture includes a third portion and a fourth portion facing each other. The third and fourth portions include a pair of downstream inclined surfaces whose interval widens as heading toward the downstream side, and a pair of downstream flat surfaces located within the range of the pair of upstream inclined surfaces when viewed along the transport direction. While air is discharged from the nozzles, a semi-finished product is conveyed so that the orientation of the outer peripheral edge of foil matches the transport direction in a state where a pair of seal portions are positioned within a space between the first portion and the second portion of the upstream fixture, and a pair of portions to be lifted are supported by the pair of downstream flat surfaces in a state where the pair of portions to be lifted are opened so as to get close to the pair of upstream inclined surfaces.SELECTED DRAWING: Figure 1

The invention relates to the technical field of photovoltaic cell manufacturing, and provides a photovoltaic cell film layer laser patterning method, device, system and equipment and a medium, and the method comprises the steps: obtaining a preset patterning film opening depth of a photovoltaic cell; establishing a corresponding relation between the PSG thickness of the photovoltaic cell and the laser processing power required for reaching the preset graphical film opening depth; scanning by using an interference sensor to obtain the PSG thickness of the photovoltaic cell; and the laser processing power is adjusted in real time according to the PSG thickness and the corresponding relation, so that uniform laser patterning of the photovoltaic cell film layer is completed according to the preset patterning mold opening depth. At least the problem that uniformity and efficient production are difficult to consider in existing photovoltaic cell laser film opening can be solved.

A method of activating a battery cell and a method of manufacturing a battery cell including the same, and more particularly, to a battery cell activation method capable of easily discharging gas trapped between a separator and an electrode inside an electrode assembly of a battery cell, and preventing discharge of a large amount of electrolyte solution during a gas discharging process, and a method of manufacturing a battery cell including the same.

The invention provides an MES (Manufacturing Execution System)-oriented arc-shaped battery manufacturing process data acquisition method and system, and relates to the technical field of manufacturing execution system data acquisition. The method comprises the following steps: firstly, constructing a hierarchical model of a production line, a workshop section, a station, equipment, an acquisition channel and a data field, enabling the hierarchical model to correspond to a manufacturing execution system object, establishing a global unique identifier and time and space marks, forming a unified data item description table, and implementing field acquisition, unified time service and standardized preprocessing; bending features are extracted, mapping entries are generated with process states and quality results, the mapping entries are uploaded to a manufacturing execution system and a data platform, abnormal supplementary transmission and monomer-level tracing are supported, and the data consistency and tracing capability of the arc battery manufacturing process are improved.

The invention relates to the technical field of battery manufacturing, and discloses a battery cell pole cleaning device which comprises a workbench, a tray positioning system, a welding head transplanting system, a laser cleaning mechanism and a control unit, the tray positioning system comprises an X-Y direction sliding table driven by a servo motor, and a vacuum adsorption clamp is arranged on the X-Y direction sliding table; the welding head transplanting system comprises a six-axis mechanical arm, and a laser cleaning head is installed on a flange at the tail end of the six-axis mechanical arm through a quick release connector. The laser cleaning mechanism comprises an optical fiber laser, a galvanometer scanning head and a CCD (Charge Coupled Device) visual positioning module; and the control unit comprises a neural network module and is used for generating control parameters of the laser power and the scanning track. Through a lead screw-sliding block structure of the X-Y direction sliding table and a conveying belt transmission mechanism of the six-axis mechanical arm, and in combination with high-precision recognition of the CCD visual positioning module, it is ensured that the laser cleaning head accurately positions the pole, and the surface of the pole is not scratched or deformed in the cleaning process.

The battery appearance detection device includes a bracket, a first photographing component, a second photographing component, and an identification device. The first photographing component is mounted on the bracket and is configured to capture an appearance photo of a first detected member. The second photographing component is mounted on the bracket. The second photographing component is configured to capture an appearance photo of a second detected member. The first detected member and the second detected member have different shapes. The identification device is signal-connected to the first photographing component and the second photographing component. The identification device is configured to: identify an appearance defect of the first detected member based on the photo captured by the first photographing component, and identify an appearance defect of the second detected member based on the photo captured by the second photographing component. The battery manufacturing equipment includes the battery appearance detection device.

The invention discloses a compression molding method for an electrode frame cover plate of a flow battery, and relates to the technical field of energy storage battery manufacturing, and the compression molding method comprises the following steps: embedding a high-sensitivity miniature strain sensing unit on the inner wall of a forming mold cavity, constructing a stress response sensing network, and synchronously sampling to establish a dynamic time baseline; the sensor is used for capturing stress disturbance data in a forming period; and based on the dynamic time base line, extracting a strain change curve in pressure loading and unloading stages, reconstructing a stress wave propagation path diagram through time inversion, and determining a stress wave initial position and an energy distribution area. According to the method, the dynamic time base line and the stress wave propagation diagram are constructed, and the thermoacoustic test and the spectrum analysis are combined, so that the accurate identification of the energy focusing area is realized; high-frequency perturbation pulses are introduced in a pressure unloading stage, so that the coherence of stress waves is scattered, the peak stress is reduced, the generation of subfissures is inhibited, the sealing property and strength of the electrode frame cover plate are improved, and the service life of the flow battery is prolonged.

The technology described herein is directed towards a reconfigurable intelligent surface (RIS) based on microelectromechanical systems (MEMS) technology, in which MEMS micro-actuators are integrated into unit cells of the RIS. A ring-shaped cantilever, resulting from unit cell fabrication, operates as an electrothermal actuator in the unit cell's resonating pattern. A controlled voltage is applied to the ring-shaped cantilever, deforming (bending up) the metal (e.g., aluminum) ring at its non-anchored (free) portion from its relatively straight non-actuated state via joule heating. The amount of vertical displacement of the free portion of the ring when voltage is applied changes the structure of the unit cell's geometry based on the amount of voltage, whereby analog-like tuning of the unit cell's characteristics (including phase shift) is obtained. When combined with the voltage-controlled phase shifts of other unit cells of the RIS, beamforming of a reflected incoming electromagnetic wave is achieved.

The objective of the present invention is to evaluate a battery with high accuracy using a simple method. A battery evaluation device (100) is provided with an impedance real part measuring unit for measuring the real part of the impedance of a battery, for each of a first frequency and a second frequency. The battery evaluation device (100) obtains an evaluation value indicating the state of the battery on the basis of the real part of the impedance of the battery obtained for each of the first frequency and the second frequency, a temperature coefficient and a capacity deterioration coefficient acquired in advance for the first frequency, and a temperature coefficient and a capacity deterioration coefficient acquired in advance for the second frequency. The evaluation value is at least one of a metal deposition amount and a temperature.

An exterior material to be used for a battery comprises at least one pattern part formed in a transverse direction (TD) of the exterior material, wherein the TD of the exterior material is a width direction of a battery including the exterior material, and a machine direction (MD) of the exterior material is a longitudinal direction of the battery including the exterior material.

The invention belongs to the technical field of battery manufacturing and detection, and particularly relates to a lithium battery module hot-melt double-sided tape performance detection system, which comprises a dynamic hot-pressing bonding module, an environment simulation and isolation cavity, an in-situ microenvironment mechanical loading module, a multi-physics field coupling sensing and acquisition module and a central process control and data processing unit. The dynamic hot-pressing bonding module can accurately reproduce a temperature-pressure-time process curve; the environment simulation cavity realizes in-situ testing in a temperature field of-40 DEG C to 150 DEG C; the in-situ mechanical loading module supports 180-degree stripping, shearing and creep tests; the multi-physics field sensing module synchronously collects interface temperature, pressure distribution, force and displacement signals; and the central control unit realizes full-process automatic control and data analysis. Through the integrated design, the hot-pressing bonding and dynamic service environment can be integrally simulated, in-situ mechanical property characterization is carried out, and the performance of the adhesive tape in the whole life cycle of the lithium battery module is truly reflected.

Systems, methods, and computer-readable media are provided for controlling a battery manufacturing process. For instance, signal based analysis that can include audio signal analysis can be performed during a first process step of a battery manufacturing process. Based on the signal based analysis, at least one adjustment can be determined for a second process step of the battery manufacturing process. Information associated with the at least one adjustment can be provided to the second process step.

The invention belongs to the technical field of battery manufacturing, and provides a battery cell unit, a manufacturing device, a manufacturing method, an all-solid-state battery and a manufacturing method.The manufacturing device comprises an electrode diaphragm rolling and diaphragm forming mechanism used for forming and outputting electrode diaphragms in a rolling mode; the solid electrolyte rolling coating mechanism is used for rolling on the electrode membrane to form a solid electrolyte layer and performing composite rolling treatment on the solid electrolyte layer and another coating membrane or the electrode membrane to obtain a composite membrane; a composite rolling strengthening mechanism is further included, and pores can be eliminated; and the current collector rolling composite mechanism is used for arranging a current collector to obtain a battery cell unit. The conventional isostatic pressing, flat plate hot pressing and rolling processes are replaced by related mechanisms for whole-process rolling treatment, and compared with the existing method, the process is simplified, the yield and the preparation efficiency of the solid-state battery are improved, and mass production feasibility is better achieved.

The utility model provides a drawing test tool, which belongs to the technical field of energy storage battery manufacturing and testing equipment.The drawing test tool comprises a test bench, a clamping assembly, a gantry support, a first locking assembly, a drawing test assembly and a second locking assembly, the clamping assembly is arranged on the test bench, the gantry support is arranged on the gantry support, and the second locking assembly is arranged on the gantry support. The object to be tested only needs to be clamped and positioned on the test rack through the clamping assembly, the gantry support is slidably arranged on the test rack in the first direction, and the drawing test assembly is slidably arranged on the gantry support in the second direction, so that the drawing test assembly can perform two-dimensional movement on the plane parallel to the test plane of the object to be tested; therefore, the drawing test assemblies can be moved to different test positions on the same surface of the to-be-tested object respectively without moving and adjusting the position of the to-be-tested object on the test bench or reloading the to-be-tested object, and the tensile mechanical properties of the to-be-tested object at different test positions can be tested quickly, accurately and efficiently.