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The charging and discharging cycle life of ternary lithium-ion batteries can generally reach 500-2000 times. The important impact of materials and technology on the charging and discharging cycle life is still significant. With the increasing maturity of ternary lithium-ion battery technology, some ternary lithium-ion batteries can also achieve a charging and discharging cycle life of more than 2000 times. What is the lifespan of ternary lithium-ion batteries for new energy vehicles?

Ternary lithium-ion batteries, also known as ternary polymer lithium-ion batteries, refer to lithium-ion batteries with nickel cobalt manganese lithium or nickel cobalt aluminum lithium as positive electrode materials. Due to its smaller size, higher capacity density, and low temperature resistance, ternary lithium-ion batteries are currently widely used in new energy vehicles.

The service life of ternary lithium-ion batteries needs to be analyzed from the structure and usage of the battery itself. The factors that determine the service life of the battery include: battery material, usage environment, and optimal working state. The lifespan of a battery is determined by factors such as its structure and material. Existing ternary batteries are lithium-ion batteries with ternary cathode materials.

According to battery standards, the lifespan of ternary lithium-ion batteries is determined by the number of battery cycles, and the capacity of ternary lithium-ion batteries will continuously decline with the increase of charging and discharging cycles. In relevant laboratories, ternary lithium-ion batteries were continuously charged and discharged at a rate of 1C. After 1000 charging cycles, the battery capacity decreased to 80% of the new battery state.

At present, the technology level of ternary lithium-ion batteries is at present. The capacity density of power lithium-ion batteries commonly used in electric vehicles is 260Wh/kg. Calculated based on this energy density, it is calculated at 20000 kilometers per year. If calculated based on shallow charging and discharging, the cycle life is at least 1000 times. If used properly, electric vehicles can last for at least 5 to 8 years.

Irreversible electrochemical reactions occur inside lithium-ion batteries, leading to a decrease in capacity, such as the decomposition of the electrolyte inside the battery, and even the loss of activity of the active materials inside the battery. In addition, the cycle life of the battery is also related to the process of use. With the rapid development and continuous innovation of ternary lithium-ion battery technology, The service life of batteries is also constantly improving.

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