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Dec 24, 2021

Is there a correlation between the number of cycles and the battery itself?

For power batteries, the factors that affect the cycle charge times, that is, the service life, mainly come from two aspects, on the one hand, the battery itself, and on the other hand, it comes from the outside.



The answer is yes, in fact, for power batteries, the factors that affect the number of cycle charging is also the service life, mainly from two aspects, on the one hand, the battery itself, the other side is from the outside. Let's look at what external factors will affect the number of charging cycles, first of all, the usual use, such as the temperature of the battery in use and the degree of battery discharge, etc. will affect the service life of the battery.



In addition, the timing of charging is also very important, it is generally recommended that the use of shallow charge shallow discharge of the battery, if there is over-discharge or over-charge, in fact, the battery life is more affected, generally keep the power from 25% to 75% between must not wait until completely discharged and then recharge. Finally, the use of different charging methods will also affect the service life of the battery, such as the current market charging pile there are two main, one is a fast charging pile another is a slow charging pile if you often use fast charging pile charging, the battery life will also have an impact


After looking at the external influencing factors, we will look at the battery itself. First of all, the most important factor in determining the number of battery cycle charging is the electromagnetic material, for example, the current mainstream use of electric vehicles on the two batteries, ternary lithium batteries and lithium iron phosphate batteries. These two batteries use different cathode materials, the characteristics of the two batteries in later use is not the same, and at the same charging rate, lithium iron phosphate battery cycle charging times can reach 2000 times, while the ternary lithium battery charging cycle times can only reach 1000 times, which is enough to see the impact of the material on the life of the battery is very large.


Second is the quality of the battery cell, from the current point of view there are a lot of battery manufacturers are providing batteries for electric vehicles, but each brand has its own characteristics, and from the quality point of view also vary. Although from a theoretical point of view, as long as the same specifications of the battery cell charging cycle number is the same, but different brands use different production processes will also lead to different life later. Finally, in addition to the cell itself power battery pack also needs a set of perfect battery management system, this management system can make the cell more reasonable charging and discharging, which has a great impact on the battery life. For example, one of the thermal management system as well as the battery equalization system, for the power battery pack are critical.



The number of cycles of battery charging represents the life of the battery, and the factors that affect the life of the battery are related to the battery itself and the usage factors. For pure electric car owners the battery itself is a factor that we can't decide, but we can extend the service life of the power battery by developing good habits with the car, which we can do. 


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