What types of lithium batteries are there? What are their characteristics.

Power batteries are used in all walks of life. With the development of the lithium battery industry, lithium batteries with higher energy density and smaller volume are gradually replacing the original nickel-metal hydride, lead-acid and manganese-acid batteries. Then the lithium batteries currently on the market What are the types? What are their characteristics. At present, power batteries are divided into soft and hard packs, and the hard packs are further subdivided into: cylindrical and square. From the structural point of view, different packaging structures have their own advantages, and different packaging structures are also an evolutionary way to meet the different needs of the market. 1) Cylindrical lithium battery features: ①The cylindrical lithium battery has mature production technology, high degree of automation, and low PACK cost; ②There are many models. 18650, 21700, 26500, etc.; ③Cylindrical battery has a variety of shapes, suitable for full layout of electric vehicle space design; ④Cylindrical battery pack has a large heat dissipation area, and generally adopts steel shell or aluminum shell to encapsulate with relatively low specific energy. 2) Features of square lithium battery cells: square and cylindrical aluminum shells are generally aluminum shells, and the protection of the cells is better than that of aluminum-plastic film batteries (ie soft-pack batteries), and the safety of the cells is also better than that of cylindrical batteries. Great improvement; however, it is difficult to ensure consistency, too many models, and difficult to unify the process. It is suitable for customized production and is not convenient for automated production of battery packs. 3) Features of soft-packed lithium battery cells: Soft-packed batteries are another name for polymer batteries. Compared with cylindrical batteries, they are small in size, light in weight, high in specific energy, high in safety, and flexible in design. advantage. ①The weight of the soft pack battery is 40% lighter than the steel shell lithium battery of the same capacity, and 20% lighter than the aluminum shell battery; ②The capacity is large. The capacity of the soft pack battery is 10-15% higher than that of the steel shell battery of the same size and 5-10% higher than that of the aluminum shell battery. ③Small internal resistance. The internal resistance of the soft-pack battery is lower than that of the lithium battery. At present, the internal resistance of the domestic soft-pack battery core can be as low as 35mΩ, which greatly reduces the self-consumption of the battery. ④ Flexible design. The shape of the soft pack battery can be customized according to the needs of customers, and new battery cell models can be developed. Different fields have different requirements for lithium batteries. Square, round and soft-packed lithium batteries are different types derived from the different needs of the industry, and each has different advantages and applications. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Application of Random Access Memory F-RAM in Power Battery Management