What is the service life of lithium iron phosphate batteries in different applications?

1, Lithium Iron Phosphate Battery used in room temperature environment

(1) Low current charging and discharging

In this case, the use is mainly used in 3C electronic products, in this field of application of lithium iron phosphate battery normal use, if the battery brand manufacturers are strong, good quality, basically more than 2000 cycle life; Small lithium-ion battery manufacturers, slightly inferior quality also has more than 1000 cycle life;

(2) High rate stable charge and discharge use

Most of the applications of high-rate discharge are power-type lithium-ion batteries, most of which are applied to the application of supplying power to the motor, such as new energy vehicles, electric vehicles, fishing boats and so on. Because most lithium-ion iron phosphate batteries operate under high load conditions, accelerating the attenuation time of battery materials, the cycle life will be greatly reduced, and the poor quality cell may be about 500 cycles; The strong battery brand manufacturers will be better in equipment technology and material application, and the cell quality will be better, but the cycle life will be about 800 times.

(3) High rate unstable charge and discharge use

The lithium-ion iron phosphate battery used in this case will have a shorter life and will be discarded about 300 times. The unstable discharge used by the battery, when high and low, will promote the use of battery attenuation.

2, lithium iron phosphate battery used in high temperature environment

The high temperature performance of Lithium Iron Phosphate Batteries is not very mature at present, the operating temperature is -20℃ to 125℃, this temperature range is the theoretical value, and the practical application temperature range is smaller.

If the lithium-ion iron phosphate battery is normally used in this field, if the battery brand manufacturers are strong and the quality is good, the cycle life is basically more than 1000 times; Small lithium-ion battery manufacturers, slightly inferior quality also has more than 500 cycle life; Because it is used at high temperature, the damage to the battery is relatively large.

(2) High rate stable charge and discharge application

The application of high rate discharge of batteries in high temperature environment, most of them are power-type lithium-ion batteries, most of them are applied to the application of supplying power to the motor. The batteries produced by domestic strong lithium-ion battery manufacturers are mainly used in new energy vehicles, electric vehicles, fishing boats and electromechanical power supplies, etc. The battery manufacturers with low strength are mostly used in some relatively niche fields. Such as medical treatment, boiler starting. Because most lithium-ion iron phosphate batteries operate under high load conditions, accelerating the attenuation time of battery materials, the cycle life will be greatly reduced, and the poor quality cell may be about 300 cycles; The strong battery brand manufacturers will be better in equipment technology and material application, and the cell quality will be better, but the cycle life will be about 500 times.

(3) High rate unstable charge and discharge use

High temperature plus discharge rate unstable operation, greater damage to the battery, cycle life is relatively low, several battery manufacturers do tests found that 250 to 300 times, the battery can not be used.

3, lithium iron phosphate battery used in low temperature environment

The low temperature environment has a greater impact on the performance of lithium-ion iron phosphate batteries than high, as far as the current market situation is, lithium-ion iron phosphate batteries work below -20 ° C to -40 ° C, the life is significantly reduced, the discharge current range of 0.2C to 1C, the discharge capacity of 50% to 60%, the temperature is also low, the worse the discharge capacity. Therefore, there are not many low-temperature lithium iron phosphate batteries for mature applications on the market, with a temperature range of -20°C to 55°C and a cycle life of about 300 times.