Views: 82 Author: RJ Publish Time: 2019-11-20 Origin: RJ
LiFePO4 Battery is a kind of lithium-ion battery with lithium iron phosphate as cathode material.
The cycle life of long-life lead-acid battery is about 300 times, and the maximum is 500 times. The RJ lithium iron phosphate power battery has a cycle life of more than 6000 times, and can be used for 6000 times with standard charging (5-hour rate). The same quality of lead-acid battery is "new half year, old half year, maintenance half year", at most 1-1.5 years, while the theoretical life of LiFePO4 Battery under the same conditions will reach 10-15 years. Overall, the performance price ratio is more than 4 times that of lead-acid battery in theory. High current discharge can quickly charge and discharge high current 2C. Under the special charger, the battery can be fully charged within 40 minutes of 1.5C charging, and the starting current can reach 2c, while the lead-acid battery has no such performance.
I. LiFePO4 Battery will have different discharge rates in different environments:
First of all, what I want to introduce to you is the lithium iron phosphate battery. It has different discharge rates in different environments. The minimum discharge rate can reach 0.5c, and the maximum discharge rate can reach 10C. However, no matter what kind of discharge rate this battery has, it will be very flat in the discharge process. Generally speaking, the voltage is very stable, almost unchanged. Only when When the power generation of LiFePO4 Battery is about to end, it will be found that it will have a sharp decline, which can be very effective to show that LiFePO4 Battery has very good discharge characteristics, which shows that its real life is very long.
II. Display of LiFePO4 Battery at different temperatures:
LiFePO4 Battery will have different discharge phenomena under different regulated temperatures. We will set the temperature to - 20 ℃ to 40 ℃ or above. At this time, you will find that when LiFePO4 Battery is at 23 ℃, its power generation capacity can reach 100%, and when it is at 0 ℃, its discharge capacity will be 78%, that is to say, its discharge under different temperature conditions The rate is not the same, so when we want to estimate the lithium iron phosphate battery, we must keep it in a specific temperature area. In this way, the estimated result is better. But in terms of its performance under the extreme temperature conditions, the real life of LiFePO4 Battery is very long, which can reach more than 570 discharge cycles.
III. experiment of putting LiFePO4 Battery at zero voltage:
Put LiFePO4 Battery in the zero voltage experiment, you will find that after the battery is fully charged in three days, it will continue to discharge in such an environment, and its capacity will change very little, which shows that its capacity recovery is very good.