What are the three main contraindications of lithium-ion batteries?

The three major contraindications of lithium-ion batteries

 

The first temperature, lithium-ion batteries are afraid of high temperature.

 

The second current, such as 18650 cell is 3C discharge, electric car is 8000W, with the cell is lower than the electric car discharge current, which will lead to lithium-ion battery temperature is too high, the current is too large and the life of the short, there will be a bulging scrap, if the electric car power is very large, the speed is very fast, the choice of the right battery cell is obviously very important.

 

The third is full storage, ternary lithium-ion full charge is 4.35V, the current market protection plate is 4.2V on the cut-off charge, so many people buy electric car lithium-ion battery said no nominal capacity, in fact, is the reason for this, the general storage of lithium-ion batteries for electric cars for a long time, full of half of 50 of the best, such as when you buy a new cell phone, a lot of power on the 50 percent of the power. If you buy a new cell phone, many of them are powered on at 50 percent. If the full power storage time is long, it will make the lithium-ion battery capacity decrease. Lithium iron phosphate and lithium titanate except, these two can be stored at full power, but also pay attention to is to choose the better quality of the protection plate, lithium-ion batteries is the biggest taboo is overshooting over discharge, ternary lithium once over discharge on the scrap, overshooting must be bulging also scrapped.

 

Look at the lithium-ion battery varieties. Ordinary lithium-ion battery about 400 cycles, lead-acid is about 300. The more stable customized lithium ternary is 500-600 cycles, this is not stable, and the assembler's process has a lot to do with the choice of battery cell customized lithium iron phosphate is about 1000 cycles.