Cylindrical lithium battery is divided into lithium iron phosphate, lithium cobaltate, lithium manganate, cobalt-manganese mixed, ternary material different systems, the shell is divided into steel shell and polymer two, different material system battery has different advantages.
First, what is a cylindrical lithium battery?
Cylindrical lithium battery is divided into lithium iron phosphate, lithium cobaltate, lithium manganate, cobalt-manganese mixed, ternary material different systems, the shell is divided into two kinds of steel shell and polymer, different material system battery has different advantages. At present, cylindrical mainly steel-cased cylindrical lithium iron phosphate battery, the performance of this battery for high capacity, high output voltage, good charge and discharge cycle performance, stable output voltage, can high current discharge, stable electrochemical performance, safe to use, wide operating temperature range, friendly to the environment, widely used in solar lamps, lawn lamps, backup energy, power tools, toy models.
Second, the structure of cylindrical battery
The structure of a typical cylindrical battery includes: shell, cap, positive electrode, negative electrode, diaphragm, electrolyte, PTC element, gasket, safety valve, etc. The general battery shell is the negative terminal of the battery, the cap is the positive terminal of the battery, and the battery shell is made of nickel-plated steel.
Third, the advantages of cylindrical lithium batteries
Compared with soft pack lithium battery and square lithium battery, cylindrical lithium battery has the longest development time, higher standardization, more mature process, high yield rate and low cost.
1, the production process is mature, PACK cost is low, the battery product yield is high, good heat dissipation performance
2、The cylindrical battery has formed a series of internationally unified standard specifications and models, and the process is mature and suitable for high-volume continuous production.
3、The cylindrical body has large specific surface area and good heat dissipation effect.
4、The cylindrical battery is generally a sealed battery, and there is no maintenance problem during the use.
5、The battery shell has high pressure resistance, and there will be no phenomenon such as square and soft packing battery expansion during use.
