The solution of lithium battery low temperature protection is a problem that many friends want to understand, because ordinary batteries are easily damaged irreversibly when used at low temperatures, the main reason is that if they are used at low temperatures, it is easy to cause lithium separation problems, resulting in a decrease in the number of lithium ions inside the battery.
Low-temperature battery applications
If you usually pay attention, you will find that when the battery is used at low temperature, the lower the temperature, the more the battery is not disabled, and it will soon run out of power, and if the temperature is too low, the battery can not even be used directly, so in order to solve this problem, some lithium battery manufacturers have developed a low-temperature battery specially used at low temperature, so that even at a lower temperature, it can also ensure a certain working time.
40 60 Special Low Temperature Lithium Battery Products".
If you want to talk about the battery low-temperature protection solutions, you can mainly solve them from two aspects: increasing the insulation system through technology and developing and manufacturing low-temperature batteries specially applied to low temperaturesLet's briefly talk about what these solutions look like.
1. Increase the insulation system through technology
This kind of battery low temperature protection method is to install a self-heating system on the outside of the battery, that is, before entering the low temperature application, turn on the self-heating system, so that the battery can be kept at a certain temperature that can work normally, although this method is feasible, but it will not only increase the cost of battery manufacturing, but also increase the work burden of the battery, waste a part of the battery capacity of the battery itself, and the work efficiency effect is not very ideal.
Therefore, many lithium battery manufacturers will now adopt the following methods.
2. R&D and manufacturing of low-temperature batteries specially applied to low temperatures
R&D and manufacturing of low-temperature batteries specially used for applications in low-temperature environments is the best way to solve the low-temperature protection of batteries. After years of battery research and development and manufacturing, the relatively good low-temperature batteries on the market are low-temperature 18650 lithium batteries and lithium iron phosphate low-temperature batteries
Low temperature over acupuncture explosion-proof 18650 2200mah
40℃ 0.5C discharge capacity 70%.
Charging temperature: 0 +45
Discharge temperature: -40 +60
Maximum Continuous Charge Current: 22a
Maximum continuous discharge current: 22a
40 Support maximum discharge rate: 1C
40 Discharge capacity retention: 05C discharge capacity 70%.
Exic IIB T4 GC compliant.
Low-temperature square lithium iron phosphate battery cell 32v 20ah
Cell model: JD2270160CFL
Charging temperature: -20 +45
Discharge temperature: -40 +55
Maximum continuous charge current: 20A
Maximum continuous discharge current: 60A
Cell size: T22*W70*L160mm
40 Support maximum discharge rate: 3C
40 3C discharge capacity retention rate 70%.
Battery Application Knowledge Supplement:
Whether it is a low-temperature battery or an ordinary battery, when in use, if it is a high-current operation, it is recommended to work with a small current before use, and preheat the battery before it really works, which has the first benefit of prolonging the service life of the battery.