What are the effects on life when customizing lithium-ion batteries?

The charging and discharging cycle of lithium-ion batteries is a complex physical and chemical reaction process, and its cycle life influence factors are various. On the one hand, it is related to the characteristics of the battery itself, such as the design, manufacturing process, and material performance degradation; on the other hand, it is related to the external influence of the battery during use, such as the use environment and the charging and discharging system. The following is an analysis of the factors affecting the cycle life of lithium-ion batteries with a set of pictures of a set of 7-series 24V lithium-ion battery customization cases. 2. Application scenarios 2. With the development of technology and maturity of technology, customized applications of lithium-ion batteries are becoming more and more extensive. Under the same conditions, the faster the battery capacity decays, the lower the battery quality will be. Lithium-ion batteries have the advantages of high cell voltage, relatively light weight, and environmental friendliness, but after multiple cycles of charge and discharge cycles, performance such as battery capacity will decrease. The cycle performance of lithium-ion batteries is an important indicator of its quality. Many standards related to lithium-ion batteries have cycle life. 3. Lithium-ion battery customization structure and principle analysis Before the lithium-ion battery customization, it was first known that during the charging and discharging process of the battery, a passivation film can be formed on the phase interface between the negative electrode and the electrolyte. It serves as a diaphragm between the electrode and the electrolyte. It is an electronic insulator but an excellent conductor of lithium. Lithium can be freely inserted and extracted through the passivation layer. It has the characteristics of a solid electrolyte, so this passivation film is called It is a solid electrolyte interface membrane (solidelectrolyteinterface), referred to as SEI. The customization of lithium-ion batteries is mainly composed of positive and negative electrode materials, electrolyte, separator, current collector and battery casing. The positive and negative electrode materials are composed of two different lithium intercalation compounds. When charging, lithium is extracted from the positive electrode and inserted into the negative electrode through the electrolyte through the separator. When discharging, the opposite is true. Statement: Some pictures and content of articles published on this site are from the Internet, please contact to delete if there is any infringement.