source:other news
release time:2023-03-02
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According to the shape, the lithium -ion battery has square batteries, column -shaped batteries and buckle batteries; divided by outsourcing materials, aluminum shell batteries, steel shell batteries, and soft bag batteries; Lithium iron phosphate, lithium manganate, lithium polymer. Among them, square lithium batteries are commonly used as a type of battery with a high domestic penetration rate. What kind of structure is there?
structure
A typical square lithium battery, the main components include: top cover, shell, positive plates, negative plates, and blocks of stacks or wounds, insulation parts, safety components, etc. Among them, the two in the red circle are the security structure, NSD acupuncture safety device; OSD over charge protection device.
advantage
High -reliability of square lithium batteries; high system energy efficiency; relatively light weight, high energy density; simple structure and relatively convenient expansion, which is currently an important option to increase energy density by improving the capacity of the single; The system composition is relatively simple, making it possible to monitor the monomer one by one; another benefit brought by the system is that the stability is relatively good.
shortcoming
The disadvantage is that because the square lithium battery can be customized according to the size of the product, there are tens of thousands of models on the market, but because there are too many models, the process is difficult to uniform; Large, in large -scale applications, there is a problem that the system life span is much lower than the single life.
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