Structure and working principle
As the Positive electrode of battery, it connected with aluminum foil. In the middle is a polymer separator, which separates the positive and anode electrodes, but Li can pass through and electrons e- cannot. On the right side is a battery anode electrode composed of carbon (graphite), which is connected to the battery negative electrode by a copper foil.
Between the upper and lower ends of the battery is the electrolyte of the battery, and the battery is hermetically sealed by a metal casing. When LiFePO4 batteries are charged, the lithium ions Li in the positive electrode migrate to the negative electrode through the polymer separator; during the discharge process, the lithium ions Li in the negative electrode migrate to the positive electrode through the separator. Lithium-ion batteries are named after lithium ions migrate back and forth during charging and discharging.
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The volume and weight of lithium iron phosphate batteries are only about one-third of the lead-acid batteries of the same capacity.
Good temperature performance, especially outstanding high-temperature performance. The working range of lithium iron phosphate batteries can reach -20 ℃ ~ 60 ℃, and they can work at high temperatures for a long time without affecting the battery life.
Under the premise of not affecting the battery capacity, the lithium iron phosphate battery can meet the needs of high-current charging and discharging, and solve the problem of excessive battery capacity loss when the traditional lead-acid battery is discharged at a high current.
The lithium iron phosphate material does not contain any heavy metals and rare metals, and will not pollute the environment during production and use, avoiding the pollution of traditional batteries to the environment.
1. Application in the new energy vehicle industry.
Lithium iron phosphate batteries are widely used in passenger cars, passenger cars, logistics vehicles, low-speed electric vehicles, etc.
2. Start the application on the power supply.
In addition to the characteristics of power lithium batteries, the start-up type lithium iron phosphate battery also has the ability to output high power instantaneously.
3. Application of energy storage market.
LiFePO4 battery has a series of unique advantages such as high working voltage, high energy density, long cycle life, low self-discharge rate, no memory effect, green environmental protection, etc.
4. Applications in other fields.
Lithium iron phosphate batteries are also widely used in the military field due to their good cycle life, safety, low temperature performance and other advantages.
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1. Ferric phosphate drying to remove water.
2. Grinding machine mixing process.
3. Dispersing machine and material dispersing process.
4. Spray drying process.
5. Hydraulic press.
6. The sintering furnace is heated first, and nitrogen is passed through to reach the atmosphere requirement below 100ppm.
7. Rolling superfine grinding.
8. Screening and packaging.
9. Inspection and storage.
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Lithium iron phosphate is the safest cathode material for lithium ion batteries. Although the tap density is low and the voltage platform is low, due to the safety and stability of the cathode material, it is subject to abuse conditions such as extrusion, overcharge and short circuit.
Due to its safety and stability, lithium iron phosphate batteries have become an important development direction of lithium-ion power batteries.
Get A QuoteThe Lithium battery, also called LiFePO4 battery, has combined the LiFePO4 as Positive electrode material and carbon as anode material. The rated voltage of the monomer is 3.2V, and the charge cut-off voltage is 3.6V~3.65V.
The energy density of lithium iron phosphate batteries is lower than that of ordinary lithium-ion batteries, but this kind of battery has better safety, longer life, higher temperature resistance, and lower cost than the ordinary.
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