Views: 6 Author: Site Editor Publish Time: 2024-04-25 Origin: Site
At present, the standard cycle life of lithium iron phosphate batteries on the market is around 2000 times, which refers to the ideal number for stable and normal small current charging and discharging and application in normal temperature environments. However, in reality, the actual cycle life of lithium iron phosphate batteries varies under different usage conditions. What is the service life under different usage scenarios.
In this case, most of the usage is for 3C electronic products. If lithium iron phosphate batteries are used normally in this field, if the battery brand manufacturer has strong strength and good quality, the basic cycle life is more than 2000 times; Small lithium battery manufacturers with slightly lower quality have a cycle life of over 1000 cycles;
The application of high rate discharge is mostly in power type lithium batteries, which are mostly used to provide power to motors, such as new energy vehicles, electric vehicles, fishing boat electromechanical power supplies, etc. Due to the fact that most lithium iron phosphate batteries operate under high load conditions, the material decay time of the battery is accelerated, and the cycle life is sharply reduced. Poor quality battery cells may only have about 500 cycles; A strong battery brand manufacturer will have better equipment technology and material application, resulting in better battery cell quality, but the cycle life is only about 800 times.
The lithium iron phosphate battery used in this situation will have a shorter lifespan, and it will be scrapped after about 300 cycles. The unstable discharge during battery use, with varying durations, will have a greater promoting effect on battery attenuation.
The high-temperature performance of lithium iron phosphate batteries is currently not very mature, with operating temperatures ranging from -20 ℃ to 125 ℃. This temperature range is theoretical, but the actual application temperature range is smaller.
If lithium iron phosphate batteries are used normally in this field, if the battery brand manufacturer has strong strength and good quality, the basic cycle life is more than 1000 times; Small lithium battery manufacturers with slightly lower quality have a cycle life of over 500 cycles; Because using it at high temperatures can cause significant damage to the battery.
The application of high rate discharge of batteries in high-temperature environments is mostly for power type lithium batteries, which are mostly used to provide power to motors. The battery cells produced by strong domestic lithium battery manufacturers are mostly used in new energy vehicles, electric vehicles, fishing boat electromechanical power supplies, etc. The battery manufacturers with poor strength are mostly used in some relatively niche fields, such as medical treatment, boiler equipment start-up, etc. Due to the fact that most lithium iron phosphate batteries operate under high load conditions, the material decay time of the battery is accelerated, and the cycle life is sharply reduced. Poor quality battery cells may only have about 300 cycles; A strong battery brand manufacturer will have better equipment technology and material application, resulting in better battery cell quality, but with a cycle life of only about 500 times.
The unstable operation of high temperature and discharge rate causes greater damage to the battery, and the cycle life is relatively low. After testing several battery manufacturers, it was found that the battery can hardly be used after 250 to 300 cycles.
The impact of low temperature environment on the performance of lithium iron phosphate batteries is greater than that of high temperature. Based on the current market situation, lithium iron phosphate batteries operate below -20 ℃ to -40 ℃, with a significant decrease in lifespan. The discharge current range is 0.2C to 1C, and the discharge capacity is 50% to 60%. The lower the temperature, the poorer the discharge capacity. Therefore, there are not many mature low-temperature lithium iron phosphate batteries in the market now, with a temperature range of -20 ℃ to 55 ℃ and a cycle life of about 300 times.
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