EV battery
How long is the life of the new energy vehicle ternary lithium battery?
by:Vglory
2021-04-24
Ternary lithium batteries are also referred to as ternary polymer lithium batteries, which refer to lithium batteries with nickel cobalt manganate or lithium nickel cobalt aluminate as the positive electrode material. Due to the smaller size, higher capacity density, and low temperature resistance of ternary lithium batteries, they are currently being widely used in new energy vehicles. The service life of the ternary lithium battery needs to be decomposed from the structure and use of the battery itself. The factors that determine the service life of the battery are: battery material, use environment and best working condition. The life of the battery is determined by factors such as the structure and material of the battery. The existing ternary battery is a lithium battery with a ternary cathode material. According to battery standards, the life of a ternary lithium battery is determined by the number of cycles of the battery, and the capacity of a ternary lithium battery will continue to decay as the number of charging and discharging increases. In the relevant laboratory, the ternary lithium battery was continuously charged and discharged at a charge-discharge rate of 1C. After 1,000 charging cycles, the battery capacity dropped to 80% of the new battery state. The current technical level of ternary lithium batteries, the current capacity density of power lithium-ion batteries commonly used in electric vehicles is 260Wh/kg. Calculated according to this energy density, it is calculated at 20,000 kilometers a year and calculated based on shallow charge and shallow discharge. If the cycle life is at least 1000 times. If used properly, it can be used for at least 5 to 8 years on an electric vehicle. An irreversible electrochemical reaction occurs inside the lithium battery, which leads to a decrease in capacity. For example, the analysis of the electrolyte inside the battery or even the loss of activity of the active material inside the battery will cause this situation to occur. In addition, the cycle life of the battery is not good. The battery is related to the process of use, and the technology of the ternary lithium battery is constantly changing with each passing day, and the service life of the battery is also constantly improving. The battery life of an electric vehicle depends on the environment and method of use. Of course, due to various influences in real life, especially when the battery is in use, since the depth of charge and discharge is not fixed, the battery life can only be used as a reference. Instead of worrying about the life of the power lithium-ion battery pack, it is better to pay attention to your usual car usage habits. 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 is the general battery discharge cut-off voltage?
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