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Characteristics and service life of lithium iron phosphate battery
2024-02-21

Lithium iron phosphate batteries are characterized by high efficiency output, excellent safety performance, excellent high and low temperature performance, long cycle life, price advantage, small self-discharge rate and no memory effect. From the perspective of the service life of lithium iron phosphate batteries, this type of lithium battery is characterized by a long cycle life, usually lithium iron phosphate battery 1C cycle life is generally up to 2,000 times, or even more than 3,500 times, and for the energy storage market requires more than 4,000-5,000 times, to ensure that the service life of 8-10 years.


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Lithium iron phosphate batteries are a type of lithium-ion batteries using lithium iron phosphate (LiFePO4) as the anode material and carbon as the anode material. This type of battery has a single unit rated voltage of 3.2V, while the charging cutoff voltage is between 3.6V and 3.65V. During the charging process, some of the lithium ions in lithium iron phosphate will be dislodged, passed through the electrolyte to the negative electrode, and embedded in the carbon material of the negative electrode. At the same time, electrons will be released from the positive electrode, and these electrons reach the negative electrode through an external circuit, thus maintaining the balance of the chemical reaction. During the discharge process, lithium ions will be detached from the negative electrode and pass through the electrolyte to reach the positive electrode, and at the same time the negative electrode will release electrons, and these electrons will reach the positive electrode through the external circuit to provide energy for the outside world.

Lithium iron phosphate battery features:

1, high efficiency output : lithium iron phosphate batteries can be realized in continuous high-current discharging, such as the normal rated discharge current size of 2 ~ 5C, instantaneous pulse Discharge (≤10S) can be up to 20C.

2. Good safety performance : Even in the case of battery abuse resulting in internal or external damage, lithium iron phosphate battery will not explode or catch fire and other dangerous situations.

3. Excellent high and low temperature performance: Compared with other types of batteries, lithium iron phosphate batteries have quite good temperature performance, which can work at high temperatures as well as maintain stable performance at low temperatures.

4, Long cycle life: Lithium iron phosphate batteries have a long cycle life, after 2000 times of charging and discharging cycles, its dischargeable capacity can still be greater than 80% of the initial capacity.

5. Price advantage: In all secondary batteries, the price of lithium iron phosphate battery is the lowest, which makes it has a wide range of applications in many fields.

6, Self-discharge rate is small and no memory effect: These characteristics of lithium iron phosphate batteries make them more convenient to use and maintain.

7, Environmentally friendly and non-polluting : The production process of lithium iron phosphate batteries is pollution-free, and the waste batteries are not harmful to the environment, which is in line with the current social requirements for environmental protection and sustainability.

The market outlook for lithium iron phosphate batteries:

From the point of view of the market demand for the use of lithium iron phosphate batteries due to its advantages in good safety, low cost and other advantages are widely used in passenger cars, buses, logistic trucks, low-speed electric vehicles and so on. Compared with lead-acid batteries, lithium iron phosphate batteries have the advantages of long cycle life, safety and stability, green environmental protection, small self-discharge rate, etc. With the continuous maturation of the integration technology and the continuous reduction of costs, lithium iron phosphate batteries will be widely used in UPS power supply batteries.

From the common charging technology on the lithium iron phosphate battery in the charging stage, intermittent power supply or grid for the energy storage system for charging, AC power after rectifier rectified to DC power to the storage battery module for charging, storage of energy; discharge stage, the energy storage system to the grid or load discharge, storage battery module DC power through the inverter inverter for AC power, through the centralized Through the central monitoring system to control the inverter output, it can realize to provide stable power output to the grid or load. The market development of lithium iron phosphate batteries is driven by a variety of factors, including government policies, technological advances, and market demand.

With the development of new energy sources and changes in the use of automotive energy power, government policies also play an important role in promoting the development of the lithium iron phosphate battery market. In addition, technological progress is also an important factor in promoting the development of the lithium iron phosphate battery market. With the continuous innovation and advancement of battery technology, the energy density of lithium iron phosphate battery has been improved, the cost has been reduced, and the performance has been continuously optimized. This makes the lithium iron phosphate battery in the cost-effective more advantageous, further expanding its share in the market. The market demand is also an important driving force to promote the development of lithium iron phosphate battery market. With the transformation of the global energy structure and the rise of the new energy market, the demand for lithium iron phosphate batteries in the field of energy storage power stations, electric vehicles and other fields is also increasing. The market for lithium iron phosphate batteries has a broad development prospect, but as a manufacturer more need to continue to make efforts and innovations in technological progress, cost control, market expansion and other aspects.