2025 button cell battery

How to avoid "technological hollowing out" in power 2025 button cell battery

On December 5, the third exchange meeting of the special topic "Power lithium battery technology upgrade and industrial chain research" initiated by the my country Electric Vehicle Hundred People's Association was held at the Tsinghua Unigroup International Exchange Center. More than 60 guests from universities, research institutes and companies discussed "power lithium battery design, process and equipment".

The industry unanimously believes that power lithium battery process and equipment companies should take the high-end and international route, formulate a roadmap for large-scale intelligent manufacturing, study manufacturing processes, methods and standards, and guard against the "technological hollowing out" of power 2025 button cell battery.

Equipment companies should move closer to high-end and internationalization

The rapid development of new energy vehicles has led to the expansion of lithium battery production, and the demand for lithium battery equipment began to explode in the second half of 2015. Lithium battery equipment first appeared in Japan and South Korea. In recent years, as the market share of my country's battery companies has continued to increase, the market share of domestic equipment has also increased significantly. At present, the domestic substitution of lithium battery equipment has reached 50%, and it is expected to increase to 80% in 2020.

Experts at the meeting said that the main shortcomings of domestic equipment exist in the batching system, coating machine, slitting machine, assembly line, logistics warehousing system, production and manufacturing system, online monitoring system and other aspects.

Ouyang Minggao, executive vice president of my country Electric Vehicle Hundred People's Association, believes that the rapid increase in market size requires the optimization of the material system and the formulation of manufacturing process requirements based on the characteristics of the material. In addition, the product market terminal has put forward more and more stringent requirements, and the degree of automation may still be behind the advanced level abroad.

Shen Xi, general manager of BYD's second business unit energy storage and automotive battery factory, pointed out that the development of power lithium battery equipment should focus on "four highs" and "two majors". Among them, "four highs" means that the equipment must be highly reliable, high-precision, high-efficiency and highly automated. "Two majors" means that equipment development should be based on large-scale production, and equipment integration and optimization should be carried out under the premise of mass production; secondly, equipment development should be the integration of large systems, and the entire large system should be organically connected in series to control all aspects of battery production.

Lithium battery automation equipment directly determines the performance of the battery cell. At present, the competition of domestic and foreign equipment is mainly concentrated on the battery cell and top equipment. At present, domestic equipment has reached the level of leading companies in Japan and South Korea in the middle and back stages. A number of domestic leading companies have emerged and are constantly integrating the market and laying out the industry.

Wang Yanqing, chairman of Wuxi Pioneer Technology Co., Ltd., pointed out that for domestic equipment, high-end, intelligent and international are the development directions.

Industry experts said that in addition to building a leading company for power lithium batteries, it is also necessary to focus on building a leading company for production equipment and increase support for leading companies in technological transformation, research and development innovation. As a leading company, it is necessary to increase the coverage of the entire industrial chain, carry out mergers and acquisitions, and pursue economies of scale.

The government can provide support in terms of policies and regulations, financing channels, and subsidies for special funds. The company should increase investment in research and development, take an international route, and quickly learn the relevant experience of advanced foreign companies. Of course, it does not mean copying, but to insist on independent research and development, master independent intellectual property rights, and promote the technological progress and improvement of front-end equipment with the middle and back ends.

Standardization is the prerequisite for realizing intelligent manufacturing of power lithium batteries

Li Jianjun, director of the lithium battery laboratory of Tsinghua University, believes that now electric vehicles or energy storage system batteries are large-scale series-parallel systems, which puts higher requirements on battery manufacturing processes, technical levels and control.

The lithium-ion process is very complex, with many processes, and each process has an impact on the performance of the battery. The entire manufacturing process must control the environment, and production must be more scientific, reasonable, and standardized to reduce human operations. In addition, high-precision and stable equipment should be used to strictly and effectively monitor and control each node in the battery production process to reduce battery differences and thus improve battery quality.

Yang Rukun, chairman of Jiyang Intelligent Technology Co., Ltd., introduced that from the perspective of control process management, there are nothing more than four aspects: fixed-point control, foreign matter management, moderate management, and online monitoring. Some new technologies can be introduced, such as manufacturing solid-state batteries through sputtering technology, laser die cutting, laminated winding, high-speed assembly technology, etc.

Yang Rukun pointed out that the current power lithium battery is 1MWh per production line, and there are problems such as low qualified output, poor consistency, poor safety, maintenance troubles, and high costs. In the future, a production line will have to produce 1GWh to 5GWh, which is 1,000 times or even thousands of times more than the original. To achieve this goal, in addition to large-scale manufacturing, intelligent manufacturing is an important solution.

Industry experts analyzed that our power 2025 button cell battery is still in the "primary intelligence" stage, and the qualified rate in the entire industry is about 90%. In the future, we hope to increase the qualified rate of the entire battery to more than 99% through intelligent manufacturing.

Regarding the implementation path of large-scale intelligent manufacturing, industry experts said that from size, output, digitization, full-process monitoring, to the integration of the manufacturing process, as well as equipment interconnection, intercommunication, and interoperability, a lot of work needs to be done.

The manufacturing of power lithium batteries is developing in the direction of intelligence, which is mainly divided into three stages. The first stage is to realize an automated factory, and each process segment realizes automation engineering to reduce labor costs. The second stage is to realize a digital factory with comprehensive analytical capabilities to make production decisions faster and more accurate. The third stage is a smart factory, combining existing assets, resources, and infrastructure with digital processes to achieve further optimization of the business.

Industry experts generally believe that standardized production is a prerequisite for the intelligent manufacturing of power lithium batteries. Yang Xulai, executive vice president of Guoxuan High-tech Engineering Research Institute, pointed out that the standardized production of battery cells involves standardization of manufacturing equipment from the front end to the standardization of PACK equipment in the later stage. Liu Zhen, deputy general manager of Fujian Xingyun Electronics Co., Ltd., believes that the standardization of battery cells and battery packs in design and process is a prerequisite for the large-scale manufacturing of power lithium batteries. He also said that many power lithium battery production equipment have not been standardized, which has also consumed too much cost and energy for equipment manufacturing companies.

Large-scale manufacturing is the production trend of power lithium batteries

my country's electric vehicle industry has developed rapidly, and the demand for power lithium batteries has exploded. By 2020, the number of electric vehicles is expected to reach 5 million. Liu Zhen said that if the power lithium battery system does not achieve large-scale manufacturing, it will not be able to meet this demand.

Large-scale manufacturing is the production direction and an important way to reduce costs and improve quality. Its core is automated equipment, process detection systems, and production and manufacturing execution systems, including MES systems.

Liu Zhen believes that there are many problems in achieving large-scale manufacturing, such as the production of power lithium battery systems is still mainly semi-automated; the running-in of battery system production companies and automation equipment companies is not enough, and the industrial chain collaboration is not enough; the battery module design verification is not sufficient, and many have not undergone a systematic evaluation and testing phase; the key process design of the battery module is immature, the verification is not sufficient, and the one-time pass rate is low. To achieve large-scale manufacturing, the battery company, BMS R&D company, battery pack system company, equipment company, vehicle company and other industrial chains must work together.

Xiao Chengwei, director of the 18th Institute of my country Electronics Technology Group Corporation, believes that the large-scale process equipment depends on its degree of automation, including the reliability of the process, production, equipment, and control accuracy.

In addition, the MES system is indispensable for all modern manufacturing. The reason why equipment companies are currently difficult to do is that all equipment is basically "non-standard". It may take half a year to communicate in the early stage of a production line, and another half a year for the manufacturing process. It may only take one line a year. If a lot of manpower and material resources are spent, the cost will be very high. If you do module research and development yourself now, I will help you design it. After the design is completed, all the patents will be licensed to you, and you can buy my production line. For example, this company supplies battery cells, another company makes PACK or BMS, and I have modules. We will work together to do this.

Beware of the "technical hollowing out" of power 2025 button cell battery

Chen Qingtai, chairman of the Electric Vehicle Hundred People's Association, analyzed that after entering the 1990s, power lithium batteries had a relatively rapid development and saw hope, so everyone quickly focused on electric vehicles, which in turn promoted everyone to widely study power lithium batteries. Power lithium batteries have a "positive feedback" process, so progress is relatively fast.

my country's electric vehicles have risen to a national strategy, and production and sales are leading in the world. But recently many developed countries have begun to exert their strength, including Germany, Europe, and Japan, and they are all making strategic adjustments. Once these countries' large automobile companies begin to exert their strength, what kind of impact will it have on my country's electric vehicles is worth paying attention to.

Wang Chiwei, vice president of Jiewei Power, believes that South Korea and Japan are particularly focused on making equipment, and they have a very thorough understanding of equipment. The process manufacturing of power lithium batteries must also have this strategic determination and market determination.

Chen Qingtai pointed out that what he is most worried about is that the production and sales of electric vehicles have increased, but the industry is still in a state of technological hollowing out, which is too dangerous. From the perspective of new energy vehicles, do not repeat the path taken by fuel vehicles; the development process of electric vehicles must have real and core technologies of their own at the starting point, and no longer repeat the process of "technological hollowing out". He believes that domestic companies have opportunities, but this opportunity will probably only last for 3 or 5 years, because large foreign automobile companies have sufficient reserves on any route.

Chen Qingtai believes that many people talk about the focus of the industry. my country needs small giants, and the field should not be too large, but no one can beat you in this field. This is your competitiveness and this is your hope.

Industry experts generally believe that whether it is a battery company or an equipment company, it should not be troubled by production, but should invest important energy in core technology and try its best to improve quality, which involves a series of management, including equipment and technology. To master the real core technology and build core competitiveness, we don't have to wait for 300GW or 500GW of production. Waiting there means backward production capacity. my country's industry is in the process of progress. If the production capacity is advanced, the pre-production part will definitely be backward in the future. We strive to grow a company with global competitiveness.

"my country's demand for power lithium batteries is unprecedented. We should seize the opportunity and focus on improving core technology and product quality, and enhance core competitiveness in the process." Chen Qingtai emphasized.

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