2238 results about "Cell fabrication" patented technology

The invention discloses a battery life evaluation system and method based on different decline modes of a battery, and belongs to the technical field of battery management evaluation. Through combination of the data acquisition module and the information management module, battery manufacturing, operation and historical information is comprehensively acquired, accurate management of the whole life cycle of the battery is realized, the data analysis module and the performance evaluation module deeply analyze battery operation data, classify and identify recession modes and key influence factors, and the reliability of the battery is improved. The current performance and the remaining life of the battery are dynamically evaluated by combining a prediction model, decision making is simplified through health scoring, the battery management efficiency is improved, the adaptive performance optimization module adjusts battery parameters and temperature control strategies according to operation scenes, the performance and the life are balanced, active optimization and safety improvement are achieved, and the safety is improved. The carbon footprint evaluation module covers all stages of battery manufacturing, using and recycling, checks full-life-cycle carbon emission, traces the source of high emission links, provides low-carbon optimization suggestions, and assists enterprises in achieving the goal of green development.

Embodiments described herein relate generally to systems and methods for continuously and / or semi-continuously manufacturing semi-solid electrodes and batteries incorporating semi-solid electrodes. In some embodiments, the process of manufacturing a semi-solid electrode includes continuously dispensing a semi-solid electrode slurry onto a current collector, separating the semi-solid electrode slurry into discrete portions, and cutting the current collector to form a finished electrode.

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 laser-assisted sintering base metal slurry for a TOPCon solar cell and a preparation method of the laser-assisted sintering base metal slurry, and relates to the technical field of photovoltaic cell manufacturing, the slurry comprises the following components: nickel powder, glass powder and an organic carrier; wherein the glass powder at least comprises two types of glass powder, one type of glass powder is corrosive glass powder, and the corrosive glass powder at least comprises one or two of lead oxide, bismuth oxide or antimony oxide; the other kind of glass powder is auxiliary promotion type glass powder, and the auxiliary promotion type glass powder takes silicon and borate as main bodies; the two kinds of glass powder do not contain first main group element oxides. The nickel powder is used for replacing silver powder, the contact defect is made up through the LECO technology, the specific glass powder formula and the high-temperature sintering technology are combined, performance balance is achieved, and verification experiments prove that the nickel paste achieves the same efficiency (gt; 24.5%), and the cost is reduced by about 30%-40%.

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.

The invention belongs to the technical field of battery manufacturing, and discloses a battery shell welding method and a battery shell. The battery shell comprises a cover plate and a shell, the cover plate comprises a body and a lap joint convex part, and the lap joint convex part is convexly arranged at the top of the peripheral side of the body; a containing cavity is formed in the shell and provided with an opening, the cover plate blocks the opening, the lap joint protruding part abuts against the top of the shell, and the outer edge of the lap joint protruding part is inwards staggered by a preset distance H relative to the outer edge of the side wall of the shell. And the lap joint convex part and the top of the body are fused and welded. For the cover plate provided with the lap joint convex part, after the outer edge of the lap joint convex part is inwards staggered by the preset distance H relative to the outer edge of the side wall of the shell, the lap joint convex part and the shell can be well welded by adopting a top welding method, so that the advantage of wide welding speed of top welding is reserved, and the advantage of side welding of preventing light from leaking into the battery is also achieved.

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 discloses a laminated solar cell and a preparation method thereof, and relates to the technical field of solar cell manufacturing. The composite layer is laminated on the silicon-based battery, the composite layer comprises a transition layer and an oxide layer which are laminated from bottom to top, and the ratio of the components of the transition layer to the lattice coefficient of a silicon substrate of the silicon-based battery is 10%-20%; the perovskite top cell is stacked on the oxide layer, and the perovskite top cell comprises an electron transport layer, a perovskite layer and a hole transport layer which are sequentially arranged from bottom to top. According to the embodiment, the composite layer composed of the transition layer and the oxide layer is arranged, the interface embedding degree between the silicon substrate cell and the composite layer can be improved through the transition layer, generation of interface defects is reduced, meanwhile, resistance in the vertical direction is weakened through the oxide layer, downward transmission of electrons generated in the perovskite top cell is better facilitated, and the performance of the perovskite top cell is improved. And the overall photoelectric conversion efficiency of the laminated solar cell is improved.

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.

The invention discloses burr detection equipment and a burr detection method, and relates to the technical field of battery manufacturing. The burr detection equipment comprises an equipment support, a first visual detection module and a second visual detection module, the equipment support is sequentially provided with a supporting module, a first guide rail structure and a second guide rail structure, and the extending directions of the first guide rail structure and the second guide rail structure intersect with the arrangement direction of the first guide rail structure, the supporting module and the second guide rail structure; the first visual detection module and the second visual detection module are respectively used for moving along the extension directions of the first guide rail structure and the second guide rail structure, the first visual detection module and the second visual detection module are respectively used for detecting burrs on two first sides of a pole piece, and the first reflecting prism is used for reflecting light from the side edge of a pole lug to a first end face camera of the first visual detection module; therefore, burr detection can be carried out on the two first edges at the same time under the condition that the pole piece is static, the burr detection rhythm is improved, jitter of the pole piece is reduced, the detection precision is improved, and layout limitation can be reduced through the first reflecting prism.

The invention relates to the technical field of battery manufacturing, in particular to an automatic welding mechanism and an automatic assembling and welding production line. The first workbench is rotationally connected to the rack, a plurality of first bearing plates are fixedly arranged on the edge of the first workbench, and the first bearing plates are distributed on the edge of the first workbench in an array mode; the first welding assembly comprises a first welding part and a plurality of first pressing parts, the first welding part is slidably connected to the rack in the vertical direction, the output end of the first welding part is perpendicular to the rotating path of the first bearing plate, and the first pressing parts surround the output end of the first welding part, are slidably connected to the rack and are used for abutting against the convergence disc and the cover plate; according to the application, the confluence disc and the cover plate are ensured to be in close contact and close fit, the problems of pseudo soldering, non-uniform penetration and the like caused by a gap or deviation are prevented, and the uniformity of a welding seam is ensured.

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.

Disclosed herein is a roundness measuring device and a roundness measuring method of a coating roll for battery manufacturing. The roundness measuring device of a coating roll that supports an electrode sheet when the electrode sheet is coated with an electrode slurry, the roundness measuring device comprising: a displacement sensor spaced apart from the coating roll and configured to measure roundness of the coating roll in a non-contact manner; and a support member on which the displacement sensor is installed and which extends in a length direction of the coating roll, wherein the displacement sensor is installed as a plurality of displacement sensors on the support member in the length direction of the coating roll.

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 invention relates to the technical field of battery manufacturing, in particular to semi-automatic battery plate stacking equipment. Comprising a polar plate stack conveying system used for conveying polar plate stacks, a polar plate stack loading and conveying system used for conveying grating plates loaded with the polar plate stacks, a three-axis mechanical arm used for placing the polar plate stacks on the grating plates, and a transition conveying and lifting system used for conveying and lifting the grating plates fully loaded with the polar plate stacks. The system comprises a curing frame loading system and a stacking, conveying and lifting system, a curing frame is loaded on the curing frame loading system, a plurality of space layers which are arranged at intervals in the vertical direction and are communicated with one another are arranged on the curing frame, and the space layers are used for stacking grating plates; and the stacking conveying lifting system is used for conveying the grating plates conveyed by the transition conveying lifting system and placing the grating plates in the space layers. According to the device, the pole plate stacks can be automatically placed on the grating plates, the multiple grating plates bearing the pole plate stacks can be automatically and sequentially stacked in the multiple space layers on the curing frame, and the efficiency of placing the pole plate stacks on the curing frame is improved.

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 discloses a photovoltaic module and a preparation method thereof, and relates to the technical field of solar cell manufacturing, and the method specifically comprises a laminated part, a frame arranged on one side of the laminated part, a first packaging adhesive film and a second packaging adhesive film. Wherein a first extension section is arranged on one side of the cover plate of the laminated piece, and the extension section is close to the frame; the first packaging adhesive film is arranged below the first extension section and extends to a lower edge area of the back plate included by the laminated piece; one or more drainage holes are formed in the side face of the frame. And filling a second packaging adhesive film between the closed area and the laminated piece aiming at the closed area without the drain hole in the frame. According to the embodiment, accumulated water can be drained, and meanwhile, the side, close to the frame, of the back plate is effectively protected, so that water vapor cannot permeate into the laminated structure of the back plate in the drainage process, and the layering problem of the photovoltaic module is avoided.

The present invention relates to the technical field of battery manufacturing, and provides a tab smoothing mechanism and a cell processing system, wherein the tab smoothing mechanism has a fixing member, which is arranged on one side of the end of the winding core with the tab, and the fixing member has a guide surface facing the end of the winding core, and the distance between the guide surface and the end of the winding core with the tab gradually decreases from the feed end to the discharge end, so that the tab moves relative to the fixing member as the winding core is wound, and when passing through the guide surface, the tab is squeezed by the guide surface toward the end of the winding core, and the tab squeezed by the guide surface can bend toward the end face of the winding core, which can effectively avoid the tab folding, wrinkling, disorder and other undesirable phenomena during the winding process, thereby improving the winding quality of the winding core. The cell processing system having the tab smoothing mechanism also has the above advantages.

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.