ã€How to develop lithium batteries to resist risks? On May 8, the White House issued a news report that Liu Chuan, member of the Political Bureau of the CPC Central Committee and Vice Premier of the State Council, will visit Washington, the capital of the United States, next week to hold economic and trade consultations with U.S. economic and trade officials. On this occasion, Xiao Bian continued to analyze lithium battery manufacturing equipment, automation, industrial chain cooperation, and cross-industry cooperation, and how lithium batteries should withstand external risks.
Battery manufacturing equipment technology gap
At present, the speed of development of domestic power batteries has surpassed that of foreign countries, but manufacturing equipment paired with batteries still has a large gap with foreign manufacturing equipment. These include the accuracy, speed, reliability, unmanned, visualization, information, and other aspects of the equipment, which have a certain relationship with the overall level of industrialization in China.
The investigation results of OFweek Industrial Research Center show that in the lithium production and preparation process, there are several stages of equipment that have not yet been fully domesticated, such as coating machines, coiling equipment, and lithium-ion battery composition tanks. There are manufacturers in the country, but few companies have mastered relevant technologies or technologies to achieve first-class levels. The application level of these three kinds of Chinese products is relatively high. Even so, compared with foreign manufacturers, there is still a big gap.
Taking a coating machine as an example, domestic coating machines are in urgent need of improvement in both precision and speed. The average speed of coating equipment for imported equipment is about 80m/min, although Shenzhen Yakang (acquired by Wonhe Technology) will be in 2016. The coating speed 100m/min and the world's first zero-speed butt-joint double-sided adhesive slot extrusion coating machine were introduced, but the average level of domestically produced equipment is still at a level of 40-50m/min, which is still a small gap.
Picture Source: Weisheng Machinery TB Series Coating (Composite) Machine
Due to the backwardness of domestic manufacturing equipment, battery manufacturers often choose to purchase higher-level equipment internationally when selecting production equipment for the sake of better battery quality. To reduce R&D investment in manufacturing equipment technology, the core technology is still in the hands of foreign equipment manufacturers.
Editor's opinion: In a situation where the external environment is unstable, it is particularly necessary for domestic companies to carry out research and development and manufacture of large-scale, continuous manufacturing technologies and equipment, special advancement, and unified planning equipment. On the one hand, in order to deal with emergencies, once a black swan event occurs, foreign companies cut off supply equipment, and at least their own equipment is available. On the other hand, upgrading the equipment level can also improve the performance of China’s power lithium battery and establish a foothold in the overseas group. It is also an effective measure to achieve “Made in China 2025â€, and it really provides support for China’s response to the technical pressure on the periphery. Therefore, China's lithium battery companies or equipment manufacturing enterprises should increase investment in R&D, adhere to independent intellectual property rights, and independently innovate. In the design and manufacture of equipment, we should also make full use of modeling and simulation analysis, pay attention to mechanism research, and can make full use of upstream and downstream resources, active and effective communication, clear development goals, and fully consider the cost of the entire life cycle.
Power lithium battery automation level is low
At present, the output scale of the power battery system has a certain amount of space compared to the number of batteries required by 5 million new energy vehicles in 2020. The main reason is that from the market point of view, since the second half of 2015, China’s power battery system began to show explosive growth, and the product design and manufacturing process technology upgrade of the domestic power battery did not keep up with the development speed, especially the battery module. In terms of key production processes, the design and verification are not sufficiently complete. The one-time pass rate is low, and online automatic testing and quality tracking are difficult to achieve. Therefore, the production of power battery systems is still mainly semi-automated, and only a few battery manufacturers have realized the automated production of power battery modules or modules. In addition, the pre-market demand for many types of products, different car companies frequently change the type of battery, resulting in a lack of scale effect, which is the company did not invest in automatic production equipment, the main reason.
Take the power battery PACK system as an example. The analyst of OFweek Industry Research Center believes that the automation level of PACK is not high, which is related to China's national conditions. The layout of China's power battery industry is closely related to the layout and geographical location of new energy automobile industry parks. Therefore, when battery design is PACK, it is often necessary to reconstruct different types of car companies according to the different types of car companies, because different cores and different circuit designs bring about differentiation. The requirements caused automation design difficulties. As a result, enterprises cannot use fixed one or several modes when performing battery PACK, and they often need to be adjusted according to the battery demand of the car manufacturer.
Editor's opinion: On the one hand, as the car companies and battery companies form a stable cooperation, the battery design gradually matures, production specifications and scale, the lithium battery factory automation process is expected to accelerate; on the other hand, with "process detection and information "Incremental management" as the core of the production management method is gradually deepening, and the intensification of product competition forced companies to give priority to quality control, but also will urge companies to speed up the process of automated production.
Collaboration between the industry chain or cross-industry is still not tight
There is a deficiency in the assistance between different types of participating entities and enterprises in the upstream and downstream industries of China's power battery industry chain. In terms of improving the energy density of the power battery, it is difficult and not effective if the negative energy material R&D enterprise solely increases the energy density of the battery by going it alone.
If power battery companies can co-develop with the upstream raw material companies, the difficulty in improving battery energy density will be reduced, and the effect will become significant. The reality is that in addition to the Ningde era, BYD and other lithium giant companies can achieve close cooperation and development relations with the upstream raw material companies, the remaining more than 200 lithium battery companies and anode materials companies and other battery materials companies to cooperate Not enough. In addition, the participation of BMSs, battery pack systems, PACKs, etc., is particularly important in the process of cell grouping.
In addition, in certain aspects of the power battery industry, cross-industry, cross-sector collaboration is urgent. As the power battery enters the end-of-life period, the use of waste power batteries and waste recycling have become a new outlet. In the process of ladder utilization, it involves multiple fields and multiple industries, including coding in the production process of power batteries, scrapping of new energy vehicles, and use of used batteries in the fields of electric power and energy storage. Material recycling. Therefore, in the entire life cycle of a power battery, more industries are required to cooperate in a wider area. However, so far, the cooperation in the whole life cycle of China's power battery is in its infancy, relevant laws and regulations are not perfect, and collaboration between companies is not close.
Editor's opinion: Therefore, companies in the lithium battery industry chain such as battery companies, BMS R&D companies, battery pack system PACK companies, equipment companies, inspection centers, and vehicle companies need more joint development to strengthen supply chain collaboration and cooperation. Advantages to give full play to avoid weaknesses. In addition, the cross-domain beyond the industrial chain is also the profit point of the power battery industry chain. If cross-industry cooperation such as gradient utilization and material recycling can be formed, it will undoubtedly create a broader moat for the power battery industry chain and resist the outside. The risk is more favorable.
With long hands in the hands, you can bind the dragon. When China's manufacturing industry encounters foreign countries, especially the current economic counter-resistance of the United States, only by mastering key technologies and equipment, and building a broader moat around the industrial chain, can it be unrestrained and resistant to external risks. Confidence is more expensive than gold. Under the existing power lithium battery scale and market conditions, we are confident that in the near future, China's power lithium battery industry can break the current foreign technology monopoly and take the initiative in its own hands, not only Big, do more.
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