How much do you know about the battery life of new energy vehicles?

How much do you know about the battery life of a new energy vehicle? The core component of a new energy vehicle should belong to the automotive power lithium-ion battery, which is the energy source of the new energy vehicle, which directly determines the car’s range and performance, and the service life of the ternary lithium battery How long is it? This needs to be analyzed from the structure and use of the battery itself, and determined according to the battery's service life factors, such as the battery's material, use environment and the best working condition. The battery life has the resolution of elements such as battery structure and information. The existing ternary battery is a positive data ternary lithium battery. According to battery standards, the life of a ternary lithium battery is determined by the number of cycles of the battery. The current cycle life of lithium batteries can theoretically reach 800-1000 times. According to the current technical level of ternary lithium batteries, the capacity density of power lithium-ion batteries is commonly used for electric vehicles is 260wh/kg. Calculated according to the energy density, 20,000 kilometers a year is calculated, and the calculation is charged according to the shallow calculation. The cycle life is at least 1,000 times. . If used properly, the electric vehicle can be used for at least 5 to 8 years. If used improperly, the life of the lithium battery will be reduced by 2-3 years. The so-called proper use depends on whether you can abide by the shallow and superficial rules, and don't overuse it. Secondly, regarding the battery life, there are also some factors that will determine the battery life, such as the battery's use environment and the battery used to determine the battery's state. In the process of use, an irreversible electrochemical reaction will occur inside the lithium battery to reduce the ability, such as the decomposition of the internal electrolyte of the battery, or even the loss of activity. The activity of the internal data of the battery can cause this situation to occur, and secondly, others. , The battery cycle life is also in the process of using, the ternary lithium battery technology is constantly innovating, and the service life of the battery is also continuously extending. The active material on the positive plate of the nickel-cadmium battery is composed of nickel oxide powder and graphite powder. Graphite does not participate in chemical reactions, and its important function is to improve conductivity. The active material on the negative plate is composed of cadmium oxide powder and iron oxide powder. The purpose of the iron oxide powder is to make the cadmium oxide powder have a higher diffusion rate, prevent agglomeration, and increase the load-bearing capacity of the plate. The active material is wrapped in a perforated steel tape to form the positive and negative plates of the battery under pressure. These boards should be separated by alkali-resistant hard rubber insulation rods or perforated PVC corrugated boards. The electrolyte is usually potassium hydroxide solution. Compared with other batteries, nickel-cadmium batteries have a moderate self-discharge rate (the discharge rate of the battery when not in use). During the use of NiCd battery, if it is not fully discharged and then recharged, the next time it is discharged, it will not be able to release all its power. For example, the battery can only release 80% of its power before it is fully charged. This is called the recall effect. Of course, a few complete discharge/charge cycles will restore normal operation of the nickel-cadmium battery. Due to the memory effect of nickel-cadmium batteries, if the battery is not fully discharged, each battery should be discharged less than 1V before charging. 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: What are the potential safety risks of new energy vehicles?