main shortcomings of ternary lithium batteries

　　Poor safety and short cycle life are the main shortcomings of ternary lithium batteries, especially safety performance, which has been a major factor limiting their large-scale assembly and integration applications. A large number of actual tests have shown that large capacity ternary batteries are difficult to pass safety tests such as needle puncture and overcharging, which is why manganese elements are generally introduced more into large capacity batteries, and even mixed with lithium manganese oxide for use. The cycle life of 500 cycles is relatively lower than average in lithium batteries, so the main application areas of ternary lithium batteries are consumer electronics products such as 3C digital.

　　2. Classification based on product appearance

　　Divided into: cylinder, soft bag, and square

　　Cylindrical and square outer packaging are usually made of steel or aluminum. The outer packaging of the soft bag is made of aluminum-plastic film. Actually, the soft bag is also square. The aluminum-plastic packaging used in the sales market is called a soft bag. Some people refer to soft bag batteries as lithium polymers.

　　For lithium-ion battery models, it is a universal 5-bit specification. The first two digits are the middle number between the direct number and the rechargeable battery. It is enterprise mm. For example, 186 lithium ions are 58 millimeters wide and 65 millimeters high.

　　3. According to the different electrolyte materials, lithium batteries are divided into liquid lithium batteries (LIB) and polymer lithium batteries (PLB)

　　Liquid lithium batteries are used for liquid electrolytes (mainly for rechargeable batteries). It can be replaced by a lithium polymer solid polymer electrolyte solution, which can be dry or gel like. Currently, most of them are polymer electrolyte solutions. For solid-state batteries, the exact meaning is that both the liquid level and electrolyte are solid.

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