2879 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.

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 discloses a negative electrode slurry cracking reduction method, which specifically comprises the following steps: S1, negative electrode slurry formula improvement: on the basis of original raw materials of negative electrode slurry: graphite, a conductive agent, a thickening agent, a binder and deionized water, adding a specific additive-N-methyl pyrrolidone accounting for 0.5% of the total weight of the raw materials; the invention relates to the technical field of battery manufacturing. According to the method for reducing the cracking of the negative electrode slurry, coating cracking is remarkably reduced: by adding NMP in a specific proportion, the problem of coating cracking of the negative electrode slurry is effectively improved, and the yield and quality of a negative electrode plate are improved; the cracking-free negative plate can maintain better structure and performance stability, and is beneficial to improving the overall performance and prolonging the service life of the lithium ion battery; the rejection rate and the rework rate caused by cracking are reduced, and the production cost and resource waste are reduced; nMP is used as a common solvent and is widely applied to the battery manufacturing industry.

The invention discloses a back surface structure of a TBC battery, a preparation method of the back surface structure, the TBC battery and a preparation method of the TBC battery, and belongs to the technical field of solar batteries. According to the back surface structure of the TBC battery, the first doped polycrystalline silicon layer is provided with the high-concentration doped region and the low-concentration doped region, so that on one hand, good contact between a metal electrode and polycrystalline silicon is ensured, and meanwhile, the battery has relatively low contact resistance and high conversion efficiency. According to the back surface structure of the TBC battery or the preparation method of the TBC battery provided by the invention, on the basis of ensuring that the thickness of the first doped polycrystalline silicon layer is not reduced, by arranging the low-concentration doped region, the adverse effect of laser patterning processing on subsequent wet etching of polycrystalline silicon is reduced, the wet etching effect of the polycrystalline silicon is ensured, and the production efficiency of the TBC battery is improved. Therefore, on the basis of ensuring the battery performance, the difficulty of the preparation process is reduced, and the battery manufacturing yield is improved.

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.

The invention discloses a solar cell process passivation monitoring and repairing device, which relates to the technical field of crystalline silicon solar cell manufacturing, and comprises a test probe row, a roller slide platform, a data analysis system and a laser, the laser is a purple picosecond laser, the pulse energy density is 500W / cm < 2 >-8000W / cm < 2 >, the laser repetition frequency is 500KHz-2000KHz, and the pulse stability is less than 3% RMS. According to the invention, monitoring data is collected, an abnormal area and repair data are analyzed and fed back to the laser, the laser adopts laser with a certain pulse signal to carry out thermal processing, crystal lattices are enabled to vibrate orderly through thermal driving, and internal doping of polycrystalline silicon is redistributed, so that the purpose of repairing an abnormal silicon wafer is achieved. And the manufacturing cost of the solar cell is further reduced.

A green method for producing a nickel-cobalt-manganese new energy raw material from laterite nickel ore based on hydrometallurgy, mainly comprising ore blending, ore washing, ore separation, pressurization leaching or oxygen pressure leaching, cyclic leaching and neutralization, counter-current washing, multi-segment removal of iron chromium aluminum, multi-segment synthesis of nickel-cobalt-manganese hydroxide, ion extraction, preparation of a nickel-cobalt-manganese mixed salt solution, preparation of a separate nickel-cobalt-manganese salt solution, preparation of a nickel-cobalt-manganese mixed salt crystal, preparation of a separate nickel-cobalt-manganese salt crystal, preparation of a ternary precursor, comprehensive treatment of wastewater, waste gas, and waste residue, and other techniques and processes. Efficient simultaneous extraction of nickel-cobalt-manganese is achieved; ferrochrome, copper, zinc, scandium and other valuable metal elements are effectively recovered; a nickel-cobalt-manganese raw material meeting the requirement of a high-nickel ternary battery is produced; and a ternary precursor material directly used for manufacturing of the ternary battery is manufactured.

Systems and methods for executing a virtual reality (VR)-based simulation for secondary battery production are disclosed. One method includes receiving a gaze direction and gaze location of a user identified from a HMD. Content associated with a secondary battery production apparatus corresponding to the received gaze direction and gaze location is displayed on an area of a display of the HMD. User behavior information indicating a motion of the user determined from at least one of the HMD or a controller associated with the HMD is obtained. The content associated with the secondary battery production apparatus is executed based on the obtained user behavior information.

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 discloses a battery anomaly detection method and device and electronic equipment. The method relates to the technical field of batteries, and comprises the following steps: in response to a received electrolyte injection instruction, controlling to inject an electrolyte into a to-be-detected battery, so that the electrolyte infiltrates a pole piece of the to-be-detected battery; acquiring a voltage change curve of the to-be-tested battery in the infiltration process; and based on the voltage change curve, determining an anomaly detection result of the to-be-detected battery, the anomaly detection result being at least used for indicating whether self-discharge anomaly exists in the to-be-detected battery. According to the invention, the technical problem of low detection efficiency of battery self-discharge anomaly detection after battery manufacturing in the prior art is solved.

The invention discloses a lithium ion battery electrical abuse stability evaluation method and device and electronic equipment, and belongs to the technical field of lithium ion batteries. The method comprises the following steps: carrying out multiple overcharge cycles on the lithium ion battery by adopting constant current; wherein one overcharge cycle comprises discharging the lithium ion battery to a discharge cut-off voltage and charging the lithium ion battery to an overcharge cut-off voltage; and evaluating the overcharge stability of the lithium ion battery according to the discharge capacity of the lithium ion battery before multiple overcharge cycles and the discharge capacity of the lithium ion battery after multiple overcharge cycles. According to the method, the voltage is used as the cut-off condition of overcharge, so that side reactions caused by overcharge in the battery stability evaluation process can be reduced, the evaluation result is more reliable, the discharge capacity of the battery before and after multiple overcharge cycles is used for evaluation, and the evaluation efficiency is improved. The influence of factors such as a battery manufacturing process and a use environment on an evaluation result can be reduced, and the accuracy of electric abuse stability evaluation of the lithium ion battery 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.

A pouch type battery manufacturing apparatus according to an embodiment of the present disclosure is a secondary battery manufacturing apparatus for sealing a pouch type battery case, the apparatus including: an upper sealing tool and a lower sealing tool, wherein each of the upper sealing tool and the lower sealing tool is formed by assembling a plurality of sealing parts, wherein the plurality of sealing parts includes a central sealing part, a first sealing part located on the left and right sides of the central sealing part, and a second sealing part disposed outside the first sealing part, and wherein the central sealing part corresponds to an electrode lead covered by a lead film, and an upper surface and a lower surface of the central sealing part are parallel to each other.

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 belongs to the technical field of battery manufacturing, and relates to a cadmium chloride heat treatment method of a cadmium telluride battery and a device system thereof, and the cadmium chloride heat treatment method comprises the steps of cadmium telluride sample preheating, cadmium chloride thermal spraying and annealing treatment which are carried out in sequence; wherein in the cadmium chloride thermal spraying process, a cadmium chloride solution and a cadmium telluride sample are heated respectively; the cadmium chloride thermal spraying and the annealing treatment are respectively carried out for at least one time. According to the cadmium chloride heat treatment method provided by the invention, the cadmium telluride sample and the cadmium chloride solution are respectively heated before spraying, so that refined and dispersed cadmium chloride particles mainly reach the surface of the cadmium telluride sample, and the continuity and microscopic uniformity of a cadmium chloride film layer are improved; the efficiency of the cadmium telluride thin film assembly is improved, and meanwhile the processing cost and the equipment cost are reduced.

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.

The utility model provides a battery top cover assembly and a secondary battery, and relates to the technical field of battery manufacturing. The battery top cover assembly comprises a top cover plate, an anti-explosion valve, a first protective cover and a second protective cover, the top cover plate is provided with an anti-explosion valve hole communicated with the inner side and the outer side. The anti-explosion valve is installed in the anti-explosion valve hole, the first protective cover is installed on the side, close to the outer side, of the anti-explosion valve, and the second protective cover is installed on the side, close to the inner side, of the anti-explosion valve. And meanwhile, the section size of the first through hole in the first protective cover is smaller than that of the second through hole in the second protective cover. The first protective cover and the second protective cover are respectively arranged on the inner side and the outer side of the anti-explosion valve, so that a larger second through hole in the second protective cover can meet the requirement of quickly discharging gas and heat in the battery, meanwhile, larger high-temperature particles are blocked, and smaller high-temperature particles are blocked by the first protective cover; therefore, most of high-temperature particulate matters can be prevented from being discharged under the condition that gas and heat are not prevented from being quickly discharged from the inside of the battery.