CR927 battery

　　What is the manufacturing process of CR927 battery?

　　1. Lithium battery manufacturing process:

　　Lithium battery manufacturing process: three processes, front, middle and last, accounting for nearly 35%/30%/35%. The main production process mainly covers the stirring and coating stage of electrode production (front stage), the winding liquid injection stage of cell synthesis (middle stage), and the packaging and testing stage of chemical encapsulation (back stage). The value (purchase amount) accounts for approximately It is (35~40%): (30~35)%: (30~35)%. The differences mainly come from different equipment suppliers, differences in the proportion of imported/domestic products, etc. The process flow is basically the same, and the value ratio is biased but generally consistent with the ratio.

　　Lithium battery front-end production process: pole piece manufacturing is related to the core performance of the battery

　　The result of the lithium battery front-end process is to prepare the positive and negative electrode sheets of the lithium battery. The first step is stirring, that is, mixing the positive and negative solid-state battery materials evenly, adding the solvent, and stirring them into a slurry through a vacuum mixer. The mixing of ingredients is the basis for the subsequent lithium battery process, and high-quality mixing is the basis for the high-quality completion of the subsequent coating and rolling processes.

　　Lithium battery mid-stage process flow: efficiency first, winding before lamination

　　In the lithium battery manufacturing process, the middle process is mainly to complete the forming of the battery. The main process includes sheeting, pole piece winding, die cutting, cell winding and lamination forming, etc. It is currently a fierce competition among domestic equipment manufacturers. A field that accounts for about 30% of the value of lithium battery production lines.

　　Lithium battery back-end process flow: volumetric formation is the core link

　　The back-end production process of CR927 battery mainly consists of four processes: volume separation, formation, testing and packaging and warehousing, accounting for about 35% of the value of the production line. Formation and volume separation are the most important links in the back-end process, and the formed batteries are activated and tested. Since the battery has a long charge and discharge test cycle, the value of the equipment is the highest. The main function of the formation process is to charge and activate the cells after liquid injection and encapsulation. The capacity dividing process is to test the battery capacity and other electrical performance parameters and classify them after the battery is activated. The formation and volume separation are performed by the formation machine and the volume separation machine respectively, usually by an automated volume separation and conversion system.

　　2. Introduction to raw materials for lithium battery production:

　　The main raw materials for the production of CR927 battery include lithium cobalt oxide, lithium nickel oxide, lithium manganate, three raw materials, lithium iron phosphate, etc.

　　The main materials for lithium battery production include: positive electrode materials, negative electrode materials, separators, and electrolytes. It also includes other parts such as packaging. At present, the supply of lithium battery raw materials is sufficient, and the production capacity of some products is sufficient. Competition is fierce, and their market prices continue to fall. However, the production capacity of a small number of high-end products is insufficient, and the prices of high-end raw material products are too high. Overall, the lithium battery industry is still booming.

　　In fact, in the field of lithium battery cathode materials, any minor technological innovation is likely to set off a new round of market expansion. Chinese enterprises should strengthen the research and development of key cathode material technologies, achieve international leadership, and enhance core competitiveness. Gain an advantage in international competition.

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