How does the lithium iron phosphate battery work?

Lithium iron phosphate battery refers to a lithium-ion battery using lithium iron phosphate as a positive electrode material. As the positive electrode of the battery, lithium iron phosphate is connected to the positive electrode of the battery by aluminum foil, and a polymer separator is in the middle, which separates the positive electrode from the negative electrode, but lithium ions can pass but electrons cannot pass. The battery negative electrode made of carbon (graphite), The copper foil is connected to the negative electrode of the battery. 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. Charging methods and techniques for lithium iron phosphate batteries New battery activation Because the lithium iron phosphate battery may be placed in the warehouse for a period of time before it reaches the user's hand, and the battery will enter the dormant state after being placed for a period of time, it must be activated at this time. The battery can be activated as long as 3-5 normal charge and discharge cycles Normally used for charging Before charging starts, the charger will supply the battery with a small current, and at the same time detect the battery voltage change, and gradually increase the current until the set value. This process can be regarded as an activation or test charge. When the battery reaches the 4.2V cut-off voltage, the battery only charges about 70% (not full) at this time. At this time, the charger continues to charge the battery with a constant voltage and a gradually decreasing current, until the value is less than 0.1A and the battery voltage continues to rise when the battery voltage continues to rise before stopping charging.