Cylindrical lithium-ion batteries are a kind of lithium-ion batteries. They are cylindrical in shape, so they are called cylindrical lithium-ion batteries. Cylindrical lithium batteries are divided into lithium cobalt (LiCoO2), lithium manganese (LiMn2O4), lithium nickel cobalt manganese (LiNiMnCoO2 or NMC), lithium nickel cobalt aluminate (LiNiCoAlO2 or NCA), lithium iron phosphate (LiFePO4) and lithium titanate (Li4Ti5O12) according to the positive electrode material.
Cylindrical lithium battery structure: A typical cylindrical battery structure includes: shell, cap, positive electrode, negative electrode, diaphragm, electrolyte, PTC components, gasket, safety valve, etc. Generally, the battery shell is the negative electrode of the battery, the cap is the positive electrode of the battery, and the battery shell is made of nickel-plated steel plate.
Compared with soft pack lithium battery and square lithium battery, cylindrical lithium battery has the longest development time, higher standardization degree, more mature technology, high yield and low cost.
Mature production technology, low PACK cost, high yield of battery products, good heat dissipation performance.
Cylindrical battery has formed a series of international unified standard specifications and models, mature technology, suitable for mass continuous production.
The surface area of the cylinder is large and the heat dissipation effect is good.
Cylindrical batteries are usually sealed batteries, and there is no maintenance problem during use.
The battery shell can withstand high voltage, and will not appear in the process of use, such as square, flexible packaging battery expansion phenomenon.