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​Lifepo4 Battery Working principle

​Lifepo4 Battery Working principle

Lifepo4 Battery Working principle

Working principle
The full name for the lithium iron phosphate battery is the lithium iron phosphate lithium ion battery, which is too long, referred to as "lithium iron phosphate battery". Because its performance is particularly suited for power applications, the term "power" is added to the name, i.e., lithium iron phosphate power battery. Some people call it "LiFe power battery"".
Metal trading market, cobalt (Co) is the most expensive, and storage capacity is not much, nickel (Ni), manganese (Mn) cheaper, while iron (Fe) cheapest. The price of the cathode material is also in line with the price of these metals. Therefore, the lithium-ion battery using LiFePO4 cathode material should be the cheapest. Another characteristic of it is its pollution-free environment.
As the battery requirements are: high capacity, high output voltage, good cycling performance, stable output voltage, high current charge discharge and electrochemical stability, the use of security (not due to overcharge and overdischarge and short circuit operation caused by improper combustion or explosion), wide temperature range, non-toxic or less toxic, no pollution to the environment. The lithium iron phosphate battery using LiFePO4 as anode in the performance requirements are good, especially in the high rate discharge discharge (5 ~ 10C discharge), stable discharge voltage, safe (no burning, no explosion), life (cycles), no pollution to the environment, it is the best. Is currently the best high current output power battery.
Structure and working principle
The internal structure of the LiFePO4 battery is shown in figure 1. The Peridot structure is on the left
LiFePO4 as the anode, cathode and battery are connected by aluminum foil, intermediate polymer diaphragm, which separates the anode and the cathode of lithium ion, but Li+ can through the electronic e- couldn't pass on the right is made of carbon (graphite) battery cathode, anode and battery are connected by copper foil. The battery between the upper and lower ends of the battery is sealed by a metal casing.
Figure 1 internal structure of LiFePO4 battery
When the LiFePO4 battery is charged, the Li ion Li+ in the positive electrode moves through the polymer diaphragm to the negative electrode. During the discharge, the lithium ion Li+ in the negative electrode moves through the diaphragm to the positive electrode. Li ion batteries are named after lithium ions move back and forth during charging and discharging.
main performance
The nominal voltage of the LiFePO4 battery is 3.2V, the end charge voltage is 3.6V, and the termination voltage is 2.0V. Because of the quality and technology of positive and negative materials, electrolyte materials, and some manufacturers, there will be some differences in their performance. For example, the same model (standard battery in the same package) has a large difference in battery capacity (10% - 20%).

The main performance of lithium iron phosphate battery is shown in table 1. In order to compare with other rechargeable batteries, other types of rechargeable battery performance are also listed in the table. To note here is that the lithium iron phosphate battery of different factories there will be some differences in the performance parameters; in addition, there are some batteries not included, such as the internal resistance of the battery self discharge rate, charge and discharge temperature etc..

Company specializing in the production,Lifepo4 Battery,Motive Battery ,Ev Battery ,Renewable Energy Battery,Storage Battery,Marine Battery

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