What tricks to double the life of electric vehicle lithium batteries

1. Lithium batteries are afraid of cold and heat. Don’t make lithium battery electric vehicles in extreme environments in summer. Many people like to expose lithium battery electric vehicles to the sun, or park them in the yard or on the road in winter. This is about the use of lithium batteries. Life is very unfavorable. The migration rate of lithium ions in the electrolyte and the electrode sheet is closely related to temperature. Theoretically, the temperature can be used normally between -20℃-55℃. In daily life, the use temperature of lithium batteries is 5℃. There is no harm to lithium batteries between -35°C. Users in the north should take lithium batteries home as much as possible for storage in winter, and do not put them outdoors. Users in the south should be wary of exposure in summer. 2.jpg 2. Do not charge and discharge the lithium battery frequently. Many people think that the number of cycles of charging the lithium battery hundreds of times in the manual of the electric vehicle is that it can be used once as long as it is plugged and unplugged. In fact, this is a misunderstanding. The number of discharges, lithium batteries are different from nickel-cadmium batteries. Lithium batteries do not have any memory effect and can be recharged anytime and anywhere. Charging the battery with residual power will not shorten the service life, but can also maintain the battery and extend its cycle. Regarding the life cycle of lithium batteries, the correct approach is slow charging instead of deep charging. 3.jpg 3. Use a suitable charger to charge. Beware that the chemical activity of high-current lithium batteries is much more active than that of lead-acid batteries. The requirements for chargers are higher. Once you use a brand-name charger or unsuitable fast charging The device not only affects the service life of the lithium battery itself, but also severely explodes due to the breakage of the diaphragm due to overheating. 4.jpg In addition, the 18650 battery is 3C discharge, and your electric car is 8000W. The battery used is lower than the discharge current of your electric car. This will cause the lithium battery to have too high temperature, too much current and shorter life. There will be bulging scraps. If your electric car has a very high power and a very fast speed, it is recommended to choose a 10 current 18650 battery cell, so it is obviously very important to choose a suitable battery cell! 4. Do not overcharge or activate lithium batteries. Many users buy lithium batteries for electric vehicles and follow the lead-acid battery method. Charge the lithium batteries for 10-12 hours for the first three times, thinking that the lithium batteries should be activated. In fact, this affects the life of lithium batteries. Some people think that superstitious trickle charging is to continue charging for an hour after the electric vehicle is overcharged to offset the interference of internal resistance. These practices are wrong and correct. The approach should be to unplug the power supply straight after the battery overflows. Try not to charge the lithium battery of an electric vehicle overnight, which is prone to fire. 5.jpg 5. Do not store the electric vehicle lithium battery (18650 battery cell) with full power. When you buy it, it is usually 2-3 grids. There are very few fully charged batteries. Long storage time will reduce the capacity of the lithium battery. . In addition, we should pay attention to choosing a better quality protection board. Pay attention to these points, your electric car lithium battery is no problem for five or six years. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How is the processing technology of the lithium iron battery separator?