Does the number of electric vehicle charging affect the battery loss?

Cars are a good restraint device. At present, the power lithium-ion battery of new energy vehicles is mainly used for three yuan lithium batteries, lithium cobalt oxide batteries, and lithium iron phosphate batteries. In these two types of batteries, there are stature and power. Lithium-ion battery life is measured according to the cycle, charging and discharging, the battery life will be less. The national mandatory requirement for the battery cycle time of power lithium-ion batteries must exceed 1,000 cycles. Lithium iron phosphate can generally achieve 2,000 cycles, while ternary lithium batteries can generally achieve more than 1,000 cycles. To say that the cycle time is not to say that it can only be charged 1000 times, but it refers to the depth of the charging and discharging time, and it is almost a cycle in use. If the power is not completely used up, the time is continued to be charged, in fact, it is not a Deep charge and discharge time. In order to let you understand more intuitively, we take the baicEU series as an example. The BAIC EU version series quickly changed the Lebel ternary lithium battery capacity to 45 degrees. NEDC concluded that the driving range was 300 kilometers. If we travel a distance of 600 kilometers a week, it is equivalent to 2 times a week. The depth of charge and discharge is required 104 times of charging and discharging, and the charging and discharging frequency of deep ternary lithium battery is about 1000 times, which means that the service life of BAIC EU series battery can theoretically be as long as 10 years. Of course, this is just a theoretical reference data at this moment. The actual service life of the battery has a very direct relationship with our ordinary car's usage habits, external environment temperature, charging habits and other behaviors. For example, parking for a long time in the case of power failure, frequent running until the battery is completely empty, and walking for a long time in a low temperature environment, these behaviors can easily reduce the life of the battery. In order to extend the service life of the power lithium-ion battery, the best way is to replenish the battery in time every time the remaining power is about 20-30%. It must be remembered that at that time, the power lithium-ion batteries used in my country's new energy vehicles can be divided into ternary lithium batteries and lithium iron phosphate batteries. Lithium batteries have a certain capacity, and its capacity is the charge and discharge of the battery. As the battery continues to rise, the amount of charge and discharge will also decrease. The loss of capacity is the loss of the battery, and the process of the loss of the battery is the decay process of the battery. According to national regulations, the attenuation of lithium-ion batteries for new energy vehicles is less than 80%, that is, more than 20% of power loss. It is not suitable for continued use of new energy vehicles and should be regarded as the end of the life of the power lithium-ion battery and forced to enter cascade use link. In other words, the degree of battery wear is the only basis for judging whether the battery life is over. Generally speaking, the service life of lithium batteries is determined by the number of recharges. The so-called charging cycle time refers to the process in which the lithium battery is discharged from the fully charged state to 0 and overflows. If driving a new energy car to work every day, the car consumes 50% of the electric energy, then the power lithium-ion battery of the new energy car needs 2 days to complete a charging cycle; since then, he changed the address and still uses the same new energy car When commuting to and from get off work, only 10% of the electricity is used, so it now takes 10 days to complete a charging cycle. Of course, if the charge and discharge capacity of the car is not fixed every time, it is not good to judge the end time of a charging cycle. In the laboratory, engineers measure by charging ternary lithium batteries one by one. After 800 recharges, the battery decays to 80%, which means that the battery loses 20%. On the other hand, a lithium iron phosphate battery needs to be charged 2000 times to lose 20% of its power. At this point, the life of the battery can be regarded as over. Engineers also found in the experiment that whether it is a ternary lithium battery or a lithium iron phosphate battery, if the shallow charging method is used to charge and discharge, its service life will be much longer, and the number of charging cycles of the ternary lithium battery can easily be broken. 1000 times. It can be seen that although the number of charges determines the loss of the lithium battery, multiple shallow charges can also complete a charge. Therefore, the number of charging will affect the wear of the battery. Of course, the number of charging refers to the charging of the current into the battery, not just plugging in the charging gun. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Will ternary lithium batteries be more prone to spontaneous combustion than lithium phosphate batteries?