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What are cylindrical lithium batteries and their advantages?
2023-12-11
1、 What is a cylindrical lithium battery?
Cylindrical lithium batteries are divided into three different systems: lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide, cobalt manganese mixture, and ternary materials.
The shell is divided into two types: steel shell and polymer. Different material systems have different advantages for batteries. At present, cylinders are mainly composed of steel shell cylindrical lithium iron phosphate batteries.
These batteries have high capacity, high output voltage, good charge discharge cycle performance, stable output voltage, high current discharge, stable electrochemical performance, safe use, wide working temperature range, and are environmentally friendly. They are widely used in solar lamps, lawn lamps, backup energy, electric tools, and toy models.
2、 Cylindrical battery structure
A typical cylindrical battery structure includes: shell, cap, positive electrode, negative electrode, diaphragm, electrolyte, PTC component, gasket, safety valve, etc. Generally, the battery casing is the negative electrode of the battery, the cap is the positive electrode of the battery, and the battery casing is made of nickel plated steel plate.
3、 Advantages of cylindrical lithium batteries
Compared with soft pack lithium batteries and square lithium batteries, cylindrical lithium batteries have the longest development time, higher standardization level, more mature technology, high yield rate, and low cost.
