How does the lithium iron phosphate battery work?

Lithium iron phosphate battery structure and working principle Lithium iron phosphate battery refers to a lithium battery that uses lithium iron phosphate as the positive electrode material. As the positive electrode of the battery, lithium iron phosphate is connected with the positive electrode of the battery by aluminum foil. In the middle is a polymer separator, which separates the positive electrode from the negative electrode, but lithium ions can pass through but electrons cannot pass. The negative electrode of the battery composed 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. Lithium iron phosphate battery charging methods and techniques New battery activation Because the lithium iron phosphate battery may have been placed in the warehouse for a period of time before it reaches the user, and the battery will enter the dormant state after being placed for a period of time, it must be activated at this time. As long as 3-5 normal charge and discharge cycles can activate the battery for normal charging and use, the charger will supply the battery with a small current and detect the change in battery voltage at the same time, 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% of the power (not full) at this time. At this time, the charger continues to charge the battery with a constant voltage and a gradually decreasing current. The charging is stopped when the battery voltage continues to rise and the battery voltage continues to rise until the value is less than 0.1A. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What technical factors will affect the quality of UPS batteries?