When it comes to battery life, lithium batteries work differently depending on their type. Imported ternary lithium batteries can generally withstand about 3,000 charge and discharge cycles, while similar domestic products can last 800 to 1,000 times. A charge cycle refers to the complete process of a battery from completely discharged to fully charged, which does not mean that it will reach that number of times every time it is charged. In fact, under normal use, lithium batteries can be charged and discharged up to 2,000 times, depending on the battery type. Ternary lithium batteries, lithium iron batteries and lithium polymer batteries differ in their durability. In comparison, lead-acid batteries can generally be charged and discharged about 500 times, which is a significant difference in their durea of life. Therefore, when choosing a battery, it is very important to understand the charging and discharging performance of its type.
Is the lifespan of a lithium-ion battery the number of years or the number of uses?
The number of life cycles of lithium batteries is determined based on the quality of the batteries and the materials used:
1. The number of cycles of ternary materials is about 800 times.
2. The number of cycles of the lithium iron phosphate battery is about 2,500 times.
3. There is a difference between the cycle times of genuine batteries and defective batteries. Genuine batteries are designed and produced according to the cycle times stated in the battery manufacturer's specifications, while the cycle times of defective batteries can sometimes. be even 50 times less than.
I hope Dianchizhidu's answer is helpful to you.
Of course, it's the number of years. Generally speaking, lithium batteries can be used for 2 to 4 years and recycled about 300 times.
The charging timing and development of lithium battery technology has made it possible to charge and use the battery at any time, instead of charging it after use as before, so that the battery can always be in optimal condition. active state.
The second is to drive at a constant speed as much as possible. Electric vehicles are the same as traditional fuel vehicles. Driving at a constant speed is conducive to the protection of the trielectric system.
The third is that when electric vehicles are not used for a long time, they need to be recharged frequently. Battery characteristics determine that the lifespan decreases rapidly when the battery is exhausted for a long time. ByTherefore, when the electric vehicle is not used for a long time, it should be charged frequently to ensure that the battery has sufficient power. .
Generally speaking, the battery life of new energy vehicles is generally 6 to 7 years, under the condition of maintaining good driving habits, learning correct battery management methods. charge and be careful not to leave the battery in any place. exhausted state for a long time, then the life of your car battery can be extended.
Detailed informationAfter the battery has been used for a period of time, the battery capacity is attenuated to 70% of the rated capacity (battery capacity at 25°C ambient temperature, atmospheric pressure standard and discharged). at 0.2C), and the battery life is considered to be at the end of its life. In industry, the lifespan is generallyent calculated based on the number of complete cycles and discharge of lithium batteries. During use, irreversible electrochemical reactions will occur inside the lithium battery, leading to a decrease in capacity, such as decomposition of electrolyte, deactivation of active materials, collapse of cell structures. positive and negative electrodes, resulting in a reduction in the number of lithium. intercalated and deintercalated ions, etc. Experiments have shown that higher discharge rates lead to a faster decrease in capacity. If the discharge current is lower, the battery voltage will be close to the equilibrium voltage and more energy can be released.
The theoretical life of lithium batteries is about 800 cycles, which is average among commercial rechargeable lithium batteries. Lithium iron phosphate is about 2,000 times higher, tandis that lithium titanate would be capable of reaching 10,000 cycles. At present, major battery manufacturers promise in their battery cell specifications that they can be used more than 500 times. However, once cells are assembled into a battery, due to consistency issues, the voltage and internal resistance cannot be exactly the same. , the lifespan of cells cannot be exactly the same. About 400 times. Xi'an Huamai has been manufacturing lithium batteries for a long time.
Baidu Encyclopedia-Lithium-ion battery