Lithium battery is a primary battery which uses lithium metal or lithium alloy as cathode material and uses non-aqueous electrolyte solution. It is different from rechargeable lithium-ion battery and
In life, we use a lot of electronic products is inseparable from the battery, such as: watches, alarm clock, flashlight, radio, etc., and also includes ordinary battery and lithium battery, so who knows what is lithium battery? Do you know how lithium batteries work?If you don’t know much, you may wish to learn with the editor!
Because the chemical properties of lithium metal is very lively, the processing, preservation and use of lithium metal, the environmental requirements are very high. Therefore, lithium batteries have not been used for a long time. With the development of microelectronics technology at the end of the 20th century, the number of miniaturized devices is increasing, which puts forward high requirements for power supply. Lithium batteries have entered the large-scale practical stage.
Lithium batteries are usually divided into two categories
Lithium metal battery: lithium metal battery generally uses manganese dioxide as cathode material, lithium metal or its alloy metal as negative electrode material, and uses non-aqueous electrolyte solution.
Lithium-ion battery: Lithium-ion battery is generally a battery that uses lithium alloy metal oxide as the positive electrode material, graphite as the negative electrode material, and non-aqueous electrolyte.
Generally, the power batteries we talk about most are lithium iron phosphate batteries, lithium manganate batteries, lithium cobalate batteries and ternary lithium batteries (ternary nickel cobalt manganese).
Cause analysis of lithium battery explosion: ① internal polarization; ① absorb water, react with electrolyte; quality and performance of ③ electrolyte itself; (4) The amount of liquid injection can not reach the process requirements; (5) Poor sealing performance, leakage and leakage detection in laser welding in the assembly process; ⑥ Dust, pole dust is easy to lead to micro short circuit; ⑦The positive and negative electrodes are thicker than the process range, and it is difficult to enter the shell; ⑧The problem of liquid injection sealing, the poor sealing performance of steel balls leads to air bulging;