What is the charging and discharging principle of lithium iron phosphate battery?

　　The charge and discharge reaction of lithium iron phosphate battery is carried out between lithium iron phosphate and fepo4. During the charging process, lithium iron phosphate gradually separates from lithium ions to form fep04. During the discharge process, lithium ions intercalate into fep04 to form lifepo4.

　　When the battery is charged, lithium ions migrate from the lithium iron phosphate crystal to the surface of the crystal, enter the electrolyte under the action of the electric field, and then pass through the diaphragm, then migrate to the surface of the graphite crystal through the electrolyte, and then embed the characteristics of graphite. At the same time, electrons flow through the conductor to the aluminum foil collector of the positive electrode, pass through the electrode lug, battery positive pole, external circuit, negative pole, and the negative pole of the copper foil collector of the battery negative electrode, and then reach the graphite negative electrode through the conductor, so that the charge of the negative electrode is balanced. . After removing the lithium ions from the lithium iron phosphate, the lithium iron phosphate is converted into a lithium iron phosphate battery.

　　When the battery is discharged, lithium ions are removed and intercalated from the graphite crystal, enter the electrolyte, and then pass through the separator, migrate through the electrolyte to the surface of the lithium iron phosphate crystal, and then re-insert into the lithium iron phosphate lattice. At the same time, electrons flow through the conductor to the copper foil collector of the negative electrode, through the electrode tabs, the negative electrode of the battery, the external circuit, the positive electrode of the battery and the positive electrode of the aluminum foil collector, and then reach the lithium iron phosphate positive electrode through the conductor, so that the charge of the positive electrode is balanced.