Ternary Lithium Battery
What are the advantages and disadvantages of ternary lithium batteries
The advantages of ternary lithium battery are: smaller volume, higher capacity density, low temperature resistance, better cycle performance, and it is the mainstream of new energy passenger vehicles. Disadvantages: poor thermal stability, it will decompose at 250-300 ℃, and the chemical reaction of ternary lithium material is particularly strong. Once oxygen molecules are released, the electrolyte will burn rapidly under the action of high temperature, and then deflagration will occur.
The ternary lithium battery, also known as “ternary lithium polymer”, refers to the lithium battery with nickel cobalt manganate or nickel cobalt aluminate as the cathode material. Ternary lithium batteries are widely used in new energy vehicles because of their smaller size, higher capacity density, low temperature resistance and other advantages. For example, we are familiar with Tesla. All its models use ternary lithium batteries. Theoretically, the service life of the ternary lithium battery is 2000 charge discharge cycles. If we count it as charging once a day, it can last for more than five years. However, in fact, there is a difference between use and theory. If 1000 cycles of charging and discharging are carried out, the ternary lithium battery has actually declined by 50%, which means that it can only run half of the original mileage after being fully charged. So how to avoid this situation? Charge when you use it. Recharge when you run out of power. In addition, excellent battery management system can also slow down the attenuation of ternary lithium batteries.
How long is the life of a ternary lithium battery?
The theoretical life of the ternary lithium battery is 1200 times that of the full charge and discharge, that is, the full cycle life. According to the use frequency, the battery is charged and discharged every three days, 120 times a year, and the service life of the ternary lithium battery reaches about 10 years. The service life of the battery is affected by many factors, such as the driver’s usage habits and regular maintenance, and the actual use situation shall prevail.
Ternary lithium battery, also known as ternary lithium polymer, refers to lithium battery with nickel cobalt manganate or nickel cobalt aluminate as cathode material. Ternary lithium batteries are widely used in new energy vehicles because of their smaller size, higher capacity density, low temperature resistance and other advantages. For example, we are familiar with Tesla. All its models use ternary lithium batteries.
The service life of the ternary lithium battery is calculated according to the proportion of the capacity attenuation degree after use to a certain extent, and it is directly terminated until the capacity life is zero. Generally, the industry algorithm is to discharge the ternary lithium battery once after it is fully charged, which is called cycle life. In the process of use, the irreversible chemical reaction inside the lithium battery will cause the battery capacity to drop, such as improper use, or extremely high or low temperature.