How many times does a lithium battery last its life?

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.

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Is the lifespan of a lithium-ion battery the number of years or the number of uses?

Ranging from 300 to 3000 times. Lithium battery is a type of battery that uses lithium metal or lithium alloy as electrical materials.positive/negative electrode and uses a non-aqueous electrolyte solution. Lithium metal batteries were first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M.S Whittingham proposed and began studying lithium-ion batteries. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream. Generally, the life of lithium batteries is 300 to 500 times, and the number of charging and discharging times of lithium batteries based on different materials varies from 300 to 3,000 times. According to the charge and discharge rate specified by the manufacturer (for example, charge and discharge 0.5 C, charge from 0% to 100% each time and repeat this cycle), after 500 cycles, the capacityof the battery will remain at 80% original. %. The number of charges that can be used is more related to usage habits.

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. The characteristicsBattery conditions determine that the lifespan decreases rapidly when the battery is depleted for a long period of time. Therefore, 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.

After 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 the industry, lifespan is generally calculated based on the number of complete cycles and discharge of lithium batteries. During its use, irreversible electrochemical reactions will occur inside the lithium battery, leading to a decrease in capacity, such as the decomposition of the electrolyte and the degradation of the active materials. Deactivation, collapse of structures positive and negative electrodes results in a reduction in the number of intercalated and deintercalated lithium ions, etc. Experiments have shown that higher discharge rates will cause capacity to decrease more quickly. If the discharge current is lower, the battery voltage will be close to the equilibrium voltage and more energy can be released.

The theoretical lifespan of lithium batteries is approximately 800 cycles, whichi is average among commercial rechargeable lithium batteries. Lithium iron phosphate is about 2,000 times that, while lithium titanate is said to 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