1.let the battery quality to a higher level
(1) Precision processing, the output of high-quality parts
The primary task of the powder press machine is to press various powder materials for lithium batteries, such as positive, negative and diaphragm raw materials, into specific shapes and sizes to provide quality parts for subsequent assembly of batteries. Take the positive electrode material as an example, ternary materials, lithium iron phosphate, etc., are pressed into a positive electrode sheet with the cooperation of the powder press machine and the mold. The thickness and density of the positive electrode is not accurate, which is directly related to how much electricity the battery can store, and the speed of charging and discharging.
On the negative material side, the graphite and silicon carbon composite materials are processed by the tablet press and become negative electrode sheets. The quality of the negative plate will affect the number of times the battery can be charged and discharged, and the performance of the high current charge and discharge. After Matsushita adopted the advanced tablet press, the compaction density of the negative sheet was greatly increased, and the number of battery charge and discharge times increased from 1800 to 2500 times. In this way, the cost of using the product is reduced and it is more popular in the market.
(2) Increase density and improve battery performance
When pressing the material, the powder press machine can make the gap between the powder smaller and improve the density of the material. In this way, the ability of the material to conduct electricity and transfer ions is stronger, the internal resistance of the battery is reduced, the charging and discharging speed is accelerated, and the use time is longer. According to authoritative tests, after optimizing the pressing process of lithium batteries, the internal resistance can be reduced by about 20%, the charging and discharging speed can be increased by 35%, and the number of uses can be increased by more than 300 times. When charging electric vehicles quickly, this advantage can be clearly felt, which greatly facilitates users.
2. Greatly improve production efficiency
(1) Automatic production, greatly improve efficiency
Now, the lithium battery market demand is increasing, and the requirements for production efficiency are becoming higher and higher. Today's powder press machine has a high degree of automation, from adding powder to the machine, to pressing and unloading, it can be automatically completed. Some high-end equipment can press more than 60 times per minute, and compared with manual operation, production efficiency is 60 times higher. Automated production is not only fast, but also reduces the impact of human factors on product quality and ensures stable product quality. At BYD's lithium battery production base, many automated powder press machines work together to produce hundreds of thousands of lithium batteries in a day, meeting a large number of market demands.
(2) Multi-station design to achieve scale efficiency
In order to further improve production efficiency, some powder press machinees use a multi-station design. This design allows the equipment to press multiple molds at the same time, which is equivalent to concentrating the functions of several simplex tablet presses in one device, greatly improving the production capacity. For example, LG Chemical used a four-station powder press to increase production per unit time by four times. Production costs have come down and companies are more competitive in the market. Therefore, the multi-station tablet press is very popular with large-scale production enterprises.
3. drive the industry technology upgrade
(1) Adapt to new materials and break through technical problems
With the development of lithium battery technology, new materials such as Li-rich mangan-based cathode materials and silicon-based negative electrode materials continue to appear. These new materials can make the battery performance better, but also put higher requirements on the powder press machine. In order to adapt to the characteristics of new materials, equipment manufacturers continue to develop new technologies and design special molds and pressing processes. Taking silicon based anode material as an example, its volume will expand during charging and discharging, which brings great difficulties to pressing. A well-known equipment manufacturer has developed a special mold and process to solve this problem, so that silicon-based negative electrode materials can be mass-produced and applied, so that the energy density of lithium batteries has increased by more than 25%.
(2) Intelligent upgrading to help industrial transformation
powder press machine is developing in the direction of intelligence. Through the introduction of artificial intelligence, big data and other technologies, the press machine itself checks problems, optimizes parameters, and can be controlled remotely. The intelligent press machine can automatically adjust the pressing parameters according to the production data to improve production efficiency and product quality. Operators can monitor and operate equipment from anywhere, making it easier to manage production. Samsung SDI's intelligent upgrade of powder press machinees enables remote monitoring and management of equipment at multiple production sites around the world. Production efficiency was increased by 25% and equipment maintenance costs were reduced by 35%. The intelligent upgrade not only makes the equipment perform better, but also promotes the entire lithium battery industry to digital transformation.
4, help the industry green development
(1) Optimize energy utilization and reduce energy consumption
In the global environment of advocating energy conservation and emission reduction, powder press manufacturers are looking for ways to improve the energy efficiency of equipment. After using energy-saving technologies such as servo motor drive, the energy consumption of the new tablet press is about 40% lower than that of the traditional hydraulic driven tablet press. Some tablet presses are also equipped with waste heat recovery systems to collect and reuse the heat generated in the production process, further improving energy efficiency. There is an enterprise with waste heat recovery system, the heat generated by the tablet press is used to heat the workshop and supply hot water, which can save 800,000 yuan in energy costs a year.
(2) Reduce waste discharge and protect the environment
In the production process, the powder press machine reduces the production of waste and scrap products through precise control and optimization of the process. Equipment manufacturers have also developed waste recovery systems to recycle waste generated during production and reduce environmental impact. There is a waste recycling system for enterprises, which increases the waste recovery rate to 85%, greatly reducing the emission of waste, and contributing to the green development of the industry.
5. Choosing the right equipment is crucial
(1) Select according to the production scale
If you are doing research and development in the laboratory, or small batch production, manual powder press is a good choice. It is flexible in operation and relatively cheap in price, which is convenient for scientific researchers to do various experiments and explore new processes. Medium-sized production enterprises can choose semi-automatic powder press machine. It can improve the production efficiency and reduce the labor intensity of workers to a certain extent. If the enterprise large-scale production, you need automatic, multi-station powder press machine. This type of equipment can meet the needs of large-scale production and reduce the production cost per unit of product.
(2) Pay attention to equipment performance indicators
Pressing accuracy: High precision tablet press, can better control the size and density of the product, so that product quality is more consistent. For production scenarios with high battery performance requirements, equipment with a pressing accuracy of ±0.01mm and above should be selected.
Pressure range: Different lithium battery materials and products require different pressing pressures. When selecting, ensure that the pressure range of the tablet press can meet the production needs, and the pressure control is stable.
Automation function: The tablet machine should have real-time monitoring, automatic adjustment of parameters, fault diagnosis and other functions, which can make the production more stable, management more efficient, and reduce maintenance costs.
In short, lithium battery powder press machine is indispensable in the lithium battery industry. From improving battery quality, to innovating production modes, promoting technological innovation, and practicing environmental protection concepts, powder press machinees run through all aspects of lithium battery production, which has a far-reaching impact on the entire industry. Enterprises in the selection of powder press machine, according to their own production needs, comprehensive consideration of equipment performance, manufacturer strength and cost effectiveness and other factors, to make a reasonable choice. With the continuous development of the lithium battery industry and the continuous progress of technology, the lithium battery powder press machine will also play an important role in helping the global energy transformation and sustainable development.
