How long does a ternary lithium battery last?

Introduction How long does a ternary lithium battery last? The theoretical life of ternary lithium batteries is around 800 cycles, which is average among commercial rechargeable lithium batteries. Ternary lithium battery refers to the use of nickel-cobalt-manganese

How long does a ternary lithium battery last?

The theoretical life of ternary lithium batteries is about 800 cycles, which is average among commercial rechargeable lithium batteries. Ternary lithium battery refers to a secondary lithium battery that uses three transition metal oxides: nickel, cobalt and manganese as the positive electrode material. Fully integrating the good cycle performance of lithium cobalt oxide, the high specific capacity of lithium nickel oxide and the high safety performance and cost savings of lithium manganate, using methods such as molecular level interweaving, inclusion, coating and surface modification to synthesize nickel, cobalt, manganese, etc. Synergistic multi-element composite oxide integrated with lithium. This is a rechargeable lithium-ion battery that is currently widely researched and used. New energy vehicle batteries useusually ternary lithium batteries. The advantages of this type of battery are sufficient power and less pollution. The normal life of qualified ternary lithium batteries is 8 years, and the specific mileage is 150,000-200,000 kilometers. Ternary lithium batteries cooperate well and have the highest power for the same weight. However, if the items are packed tightly, the temperature will be a little high. Therefore, ternary lithium batteries have very strict heat dissipation requirements. To ensure safety, each battery must have a safety device.

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

1. The most direct algorithm:

First get the current of the electrical appliance, then divide the battery capacity by the current of the electrical appliance. usable time.

For example:

A 3000 mAH battery with a nominal voltage of 5 V powers an electrical appliance with a power consumption of 2.5 W and a voltage of 5 V. Its Theoretical useful life is . :

I=P/U => 2.5w/5v => 0.5A => 500MA.

3000mAh means that a current of 3000MA can be discharged for one hour,

3000/500=6 hours.

2. Coulomb charge algorithm:

C=IS => 3A*3600s => 10800c Coulomb (charge).

Electric energy 10800c*5v=54000w.

54000w/2.5w=21600/3600s=6h.

Detailed information

Common batteries

1 Dry batteries

Dry batteries are also called manganese- . Zinc batteries, called dry cells, are compared to voltaic batteries, and the term manganese-zinc refers to their raw materials. For dry cell batteries made from other materials such as silver oxide batteries and nickel cadmium batteries. The tension of the bmanganese-zinc battery is 1.5V. Dry batteries consume chemical raw materials to generate electrical energy. Its voltage is not high and the direct current it can produce cannot exceed 1 ampere.

2. Lead acid battery

The battery is one of the most used batteries. Use a glass or plastic tank, fill it with sulfuric acid, and insert two lead plates, one is connected to the positive electrode of the charger and the other is connected to the negative electrode of the charger. , a battery is formed. There is 2 volts of voltage between its positive and negative poles. The advantage of batteries is that they can be used repeatedly. In addition, its internal resistance being extremely low, it can provide a significant current. Use it to power the car engine, and the instantaneous current can reach more than 20 amps. The battery stores electrical energy during charging and converts itchemical energy into electrical energy during discharge.

3. Lithium battery

The advantages of lithium battery are high single cell voltage, high specific energy, long storage time (up to 10 years), good high and low performance temperature, and can be used at -40~150℃. The disadvantages are that it is expensive and unsafe. Additionally, voltage mismatch and safety issues need to be improved. The vigorous development of power batteries and the emergence of new cathode materials, especially the development of lithium-iron-phosphate materials, are of great help to the development of lithium batteries.

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.

Charging timing and the development of lithium battery technology have enabled chargingr 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. 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 vehiclesThe battery life is generally 6-7 years, provided you maintain good driving habits, learn proper charging methods, 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 information

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 use, irreversible electrochemical reactions will occur inside the lithium battery, resulting in a decrease in capacity, such as decomposition.position of the electrolyte, deactivation of active materials, collapse of the positive and negative electrode structures, resulting in a reduction in the number of lithium. intercalated and deintercalated 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 life of lithium batteries is about 800 cycles, which 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 the cellsIn 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

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