Summarize the innovative product technologies of more than 20 lithium battery equipment companies

　　The lithium battery industry was originally an industry driven by technological innovation. Especially at the moment when the performance of power batteries is in urgent need of improvement, all links of the industry chain are spending great energy to promote product technology innovation, and good results have been achieved.

　　1, pilot intelligence

　　The leading intelligent "18650/21700 Cylindrical Lithium Battery Winding Machine" solves the efficiency bottleneck of the equipment. The maximum efficiency is expected to reach 40ppm, far exceeding the level of 28PPM for Japanese and Korean equipment; a large number of servo technology is adopted to make the product specification switching more convenient; More advanced correction technology makes the winding alignment of the battery core stabilized below 0.2mm, which is higher than the domestic 0.5mm and foreign 0.3mm standards.webcam factory

　　Specifically, the product has the following five major advantages: 1) Better compatibility: It can be compatible with 18650, 21700, 26650 batteries that are outsourced by the diaphragm and the anode, while the domestic winding equipment produces conventional 18650 batteries; 2) Higher productivity: the highest efficiency is expected to reach 40ppm; 3) higher winding accuracy: the winding alignment of the battery core is stabilized below 0.2mm; 4) higher stability: the utilization rate can reach more than 98%, while the peer equipment Only 95%; 5) Higher safety: The dust control is more stringent, not only considering the cutting of raw materials, the control and detection of falling dust, but also the precise control of the dust generated by the organization itself.

　　2, Leiyu Technology

　　The special feature of the fully automatic ROLLTOROLL drying system developed by Leiyu Technology in cooperation with domestic first-line mainstream power battery companies is that it subverts the rear cell assembly drying process. The pole pieces are replaced by drying.

　　Compared with the traditional post-drying process and production line, the drying consistency of the above equipment is 99.99%, the drying speed can reach 120m/min, the width is 85 cm, and the energy consumption is reduced by more than 8 times under the same capacity. After using the fully automatic ROLLTOROLL pole piece drying equipment, the purchase cost of drying equipment can be reduced by at least 50%, and the drying room and its construction costs can be reduced by 50% respectively.

　　3, Han's Laser

　　Han's laser power cell cover top welding high-speed welding system. The power battery high-speed sealing welding workbench of this equipment has high working efficiency, simple structure, convenient maintenance, and can make better use of space and resources to produce high-quality products.

　　Taking the 2614897 square cell as an example, the efficiency of the welding workbench is 1.5 times that of traditional laser equipment; taking 4000W laser welding as an example, the efficiency can reach 20PPM/Min, the welding speed can reach 200mm/s, and the equipment product yield rate is ≥99.5%. Greatly improve customer production efficiency and reduce unit labor production costs.

　　Different from the laser welding head mounted on the XY axis two-dimensional platform layout, the high-speed welding system for the top welding of the power cell cover also adopts a unique gantry-type working method, and the Y-direction linear motor is separated from the X-direction linear motor.

　　According to Han's Laser, this design can achieve the following major effects: First, it not only reduces the load carried by the X-direction linear motor, ensures that the laser welding head can run at a higher speed during welding, but also can maintain the continuous working of the welding head to a greater extent ( Double-fixture double Y-direction linear motor layout method); Second, when the equipment is running, ensure that the Y-direction linear motor and X-direction linear motor use the difference compensation method to realize the welding of the arc angle of the power battery; the third is the reasonable layout position to ensure four axes The manipulator can work with one hand, clamping battery components and battery clamps greatly reduce the weight, ensure smooth functions and improve the handling and transmission speed.

　　4, sea star

　　At present, Hymson's automatic top cover welding machine has been used in many well-known battery manufacturers in the industry. Due to its high stability, low cost and production efficiency, it has been unanimously recognized by customers.

　　Hymson Laser said that the laser station in the automatic top cover welding machine adopts a fixed fixture, the fixture is designed to follow, the welding reference is fixed and unified, and it has the advantages of high precision, good stability, and good welding quality consistency. . In addition, the whole equipment adopts modular design, with fewer parts and components, shortening the changeover time, and greatly reducing the cost.

　　5, Everbright Laser

　　The characteristics of the company's laser film machine models are: 1) dedicated to the forming of the tabs of the lithium-ion battery pole pieces; 2) strong adaptability: it can be adapted to the cutting of different shapes of tabs, convenient and fast to use, and low cost; 3) fast cutting speed : Cutting speed ≥60m/min, leading domestically; 4) Small burrs: cutting burrs ≤10um (distance from the base material); 5) Small cutting heat affected zone: positive plate ≤50um, negative plate ≤30um; 6) The service life of the laser can be Up to 100,000 hours, good stability, high cost performance of the equipment; 7) The maintenance cost of the equipment is very low in the later period, and it is basically maintenance-free;

　　8) Air expansion shaft is used for clamping to realize rapid material change; 9) With variable speed and variable tension control functions; 10) Automatic roll change and unwinding, active deviation correction, with deviation alarm function; 11) Detection before rewinding Whether it is off-track, and actively correct the deviation to ensure the winding accuracy; 12) After cutting, the waste falls into the waste box through the waste port; 13) CCD pole piece defect detection and identification, pole piece laser cutting hole identification and single release and double collection are optional Function.

　　6, Xin Longhao

　　The fully automatic vacuum helium leak detection equipment for power batteries and the oil-free dry helium recovery system developed by Xinlonghao improve the product bulging that may exist after the original helium test is completed, greatly improve product consistency and compatibility. It is relatively strong, which brings convenience to the loading and unloading and circulation of the subsequent processes.

　　At the same time, the equipment can also greatly reduce the cost of helium used by battery companies, and each line can save nearly 200,000 yuan per year. In addition, the equipment is also equipped with standard leaks, which greatly facilitates the calibration of equipment accuracy during production and use, ensures the high precision and high stability of the equipment, and ensures the controllability of product detection.

　　7, Shidai Hi-Tech

　　The fully automatic tunnel vacuum drying system independently developed by Times Hi-Tech is a set of multi-process continuous automatic vacuum drying equipment, overturning the traditional drying process, following Industry 4.0 specifications, fully automated and intelligent control, and realizing the seamless cavity of each process Docking. In the long-term stable operation of the equipment, it can maintain a high vacuum of 1Pa-100Pa, a low humidity dew point value of 2 PPM, a temperature control accuracy of 0.1 degrees, and a high temperature uniformity of 2.5 degrees.

　　The system adopts a tunnel-type full-vacuum closed structure, which integrates the traditional vacuum drying and various dispersion processes into an integrated assembly line operation, completely solves the hidden danger of unstable quality during the drying process, greatly improves the vacuum drying efficiency and shortens the drying time.

　　At the same time, the automatic vacuum drying system also adopts multi-module sub-region heating and multi-point temperature control design structure to solve the problem of temperature uniformity in the vacuum drying furnace and greatly improve the consistency of battery mass production quality; adopts fully automatic closed door technology to ensure Working environment in different process cabins; adopts fully automatic feeding process design.

　　8, Shanghai Jun Yi

　　Shanghai Junyi laser welding equipment (application in battery packaging and wiring). The equipment adopts laser welding to achieve complete sealing of the weld seam. Specifically, the battery welding stations included in the equipment include product transfer, product positioning, column vision positioning system, laser welding system, etc.

　　1) The product positioning fixture uses an electric cylinder + pressure switch + displacement sensor to monitor the pressing force and length of the battery pack during positioning, ensuring that the battery pack length accuracy is 0.2mm, and it has a blowing protection air mechanism and a dust suction mechanism; 2) The fixture is equipped with the first fixture to realize the verification of welding parameters; 3) The 4-6KW high-power laser + galvanometer is used to realize the welding of the spiral track with the galvanometer. The body of the equipment does not move to avoid tremor and the welding power is stable. Floating at 50W, to ensure wide welding penetration, uniform welding seam, high welding speed and high efficiency, welding speed 80-100mm/s;

　　4) Post-weld quality inspection system: through laser contour scanning and smart camera, the weld length, width, height, color, etc. are detected, with an accuracy of 0.1mm; 5) The equipment is equipped with dust removal equipment, stabilizer cold water equipment, and dehumidification equipment. Monitoring equipment to ensure stable operation of the workstation, and implement monitoring to collect pollutants.

　　9, Haoneng Technology

　　High-speed precision double-sided extrusion coating machine is another masterpiece of Haoneng Technology in the field of coating equipment. It has three characteristics: 1) The equipment efficiency is greatly improved. The current coating speed can reach 80m/min. The efficiency of a high-speed precision double-sided extrusion coating machine is 10 times that of the previous single-layer extrusion coating equipment. above;

　　2) Through the adoption of a series of product quality closed-loop control technologies, the accuracy and consistency of the products have been greatly improved, and the yield rate of the equipment has been increased (≥99%); A series of automatic control technologies, such as automatic feeding system and automatic wind speed monitoring, make the coating machine truly an intelligent equipment, reducing manual intervention.

　　10, supersonic speed

　　The fully automatic online high-speed surface defect visual inspection machine for lithium battery cell materials independently developed by supersonic speed broke the domestic dependence on imported products. The accuracy of the equipment can reach within plus or minus 0.3mm, the detection speed is fast, up to 80 meters per minute, and the metal leakage foil with a diameter greater than 0.2mm can be distinguished. All the indicators have reached the domestic leading level, shortening the same as the international Industry gap.

　　11, Dacheng Precision

　　Dacheng Precision launched an innovative device to measure the thickness and surface density of lithium batteries. This product integrates the two core technologies of "sub-micron-level high-precision thickness measurement technology" and "XRay/βRay high-precision areal density measurement technology" independently developed by Dacheng Precision. In view of the characteristics of the coating process of lithium batteries, the "micro-spot area density measurement technology" was first created, which broke the current situation that the coating edge and thinning cannot be measured online, so that there is no dead corner in the coating area density measurement.

　　This product can measure the surface density of the pole piece coating in real-time online without dead corners, and assist the production equipment to adjust the process parameters online, which can greatly improve the quality of the pole piece products and establish a foundation for improving battery consistency. At the same time, through timely measurement, batch scrapping is avoided. Today, the cost of raw materials for lithium batteries is soaring, using the "Integrated Machine for Measuring the Thickness of Lithium Battery Coating and Area Density" can significantly reduce the cost of undesirable scrap for lithium battery manufacturers.

　　12, Hangke Technology

　　Hangke Technology’s soft-packed lithium-ion battery hot and cold press forming equipment includes a rack, variable condition charge and discharge power supply, hot press forming fixture, cold press fixture, loading and unloading mechanism and battery gripper, variable condition charge and discharge power supply, hot pressing Formation fixture, cold press fixture, loading and unloading mechanism and battery gripper.

　　The above components are all controlled by the same control mechanism. The loading and unloading mechanism is located at the two ends of the frame; the cold pressing fixture is located between the hot pressing forming fixture; the variable-condition charge and discharging power supply is connected to the hot pressing forming fixture; the hot pressing forming fixture and the cold fixture both include aluminum laminate and are connected to Battery contact: The battery gripper can grab the battery at one time, and circulate between the loading and unloading mechanism, the hot-compression forming addition fixture and the cold-pressing fixture. The equipment combines the three processes of battery formation, hot pressing, and cold pressing in the same equipment to further simplify the process, and its battery flatness, battery life, and process aging time are also greatly improved.

　　13, Suzhou Juyi

　　Suzhou Juyi’s new automatic thickness measuring and weighing equipment, six-sided automatic coating machine and its coating method have the following competitive advantages compared with traditional coating methods:

　　1) The thickness measuring and weighing device uses the gravity of the workpiece to drop onto the placement surface when the workpiece is placed, so as to avoid hard contact when the manipulator directly places the workpiece on each placement surface; 2) Six-sided parts automatic coating machine , The effective integration of thickness measurement, weighing and encapsulation, high equipment integration, stronger automation and higher efficiency;

　　3) Adding a correction device to the film supply device and adding a roller for the bottom bread glue can effectively ensure the consistency of the battery core and the film position during the encapsulation process, and avoid the formation of bubbles on the bottom and sides after the encapsulation. The pass rate of the product and the consistency of multiple products are guaranteed; 4) It can realize the six-bread glue, which effectively prevents the problem of the film eversion and the increase of the thickness of the workpiece due to the lack of glue on the top surface, which is conducive to the later processing.

　　14, United Win Laser

　　Compared with traditional laser welding technology, single-wavelength lasers are mostly used for welding, which is prone to welding defects such as splashes and pores, resulting in low welding efficiency. The dual-wavelength laser hybrid welding technology launched by Lianying Laser has adopted optical fiber for the first time in the world. The composite welding technology of laser and semiconductor laser, and applied to the welding of power battery top cover, sealing nail, pole, soft connection, etc., can effectively reduce welding defects and improve welding efficiency.

　　Compared with traditional single-wavelength laser welding, dual-wavelength laser hybrid welding in the pole welding, the welding advantage rate can be increased from 94% to more than 98%; The 80mm/s is increased to 200mm/s, while welding defects such as spatter and pores are greatly reduced, which greatly improves the welding quality and welding efficiency. At present, the technology has obtained utility model patents, and invention patents and PCT international patents are pending.

　　15, Shenghong shares

　　Shenghong shares electric energy feedback inverter technology, pulse formation process. The technology adopts the new IGBT inverter technology to realize the AC-DC bidirectional conversion function, which effectively solves the problems of power factor, harmonic current, inverter feedback and energy saving on the AC side of the battery manufacturer's power supply; the dynamic response time of the equipment can reach within 10ms, and the control accuracy Reached 0.05%FS+0.05%RD. The positive and negative pulse technology greatly shortens the formation cycle, reduces the heat of the battery, greatly improves the production efficiency, and saves the production cost.

　　Shenghong shares stated that the battery testing and formation equipment independently developed and produced by the company adopts brand-new IGBT switching power supply technology and DSP control algorithm.