Did you know that the vast majority of lithium battery accidents are caused by chargers.
For example, chargers for lithium batteries for electric vehicles are 48V,60V, and 72V. How many kinds of chargers do you think there are for these three voltages?
Three kinds?
The answer is: 8!!!
Battery Specifications Charger Selection
13 string/14 string ternary lithium 48V13 string selection 54.6V charger,
14 string selection 58.8V charger,
16 strings of lithium iron phosphate 48V select 58.4V charger,
16/17 string ternary lithium 60V16 string selection 67.2V charger
17 string selection 71.4V charger
20 strings of lithium iron phosphate 60V choose 73V charger
20 string ternary 72V select 84V charger
24 string lithium iron 72V select 87.6V charger
Most people think that electric cars are 48V/60v/72V lithium batteries, so they can buy a charger online at will.
This often has two consequences!
1. The battery is not fully charged,
2. If the protection plate is damaged, it may lead to long-term overcharge or damage and fire of some batteries.
We have surveyed 90% of people do not know that there is a circuit board (protection board) inside the lithium battery, so they often only install the voltage to buy the lithium battery charger when buying the charger, without considering the current.
Our battery is not the bigger the current, the better, many people think that the faster the battery charging current charger is good, in fact, a large current will cause more problems!
The common problems are: 1. Large current leads to an increase in the internal resistance of the battery (affected by diaphragm crystallization) 2. Large current leads to a decrease in battery life. 3. High current breakdown protection board (the charger current should be less than the charging current of the protection board, and the protection board will be damaged due to MOS damage caused by high current overheating)
We need to choose the protection board according to the discharge capacity of the protection board and the battery. When we don't know the situation of the protection board and the battery, it is best to choose the protection board with a current within 5A. In the long run, it is beneficial to the life of the battery.
Of course, it does not mean that we must choose a low-current protection board. We must choose the voltage of the charger according to the number of strings and types of lithium batteries we ride/use. In terms of charging current, it is best to choose the charger according to the recommendations of the original manufacturer selling batteries/electric vehicles.
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