How to charge lithium iron phosphate battery

Lithium iron phosphate battery refers to a lithium battery using lithium iron phosphate as the positive electrode material. Its working principle is: when the battery is charged, the lithium ions in the positive electrode material are released, pass through the electrolyte, pass through the diaphragm and enter the negative electrode material; When discharging, lithium ions are extracted from the negative electrode again, pass through the electrolyte, pass through the diaphragm and return to the positive electrode material. So those points should be paid attention to when charging? The rated voltage of lithium iron phosphate is 3.2V. During the charging process, the full-charge voltage is related to the charging current. When the current is 0.3C, 3.8V can be judged as overflowing. If it is 0.1C, charging to 3.65V can be considered as overflowing. Therefore, the amount of voltage overflowed by different currents is also different. It is proposed to use the CCCV charging method for charging lithium iron phosphate batteries, that is, first constant current and then constant voltage. Constant current proposes 0.3C. Constant voltage proposal 3.65. That is, 0.3C current charge in the constant current process, when the battery voltage reaches 3.65V, use 3.65V voltage constant voltage charge, when the charging current is lower than 0.1C (or 0.05C), stop charging, that is, the battery is already Overflowing. At the same time, everyone must pay attention when charging, it is best not to charge the lithium iron phosphate battery pack below 0 degrees Celsius. In addition, when you charge with a constant voltage power supply, you also need to look at the charging current. It is recommended not to charge with a voltage that is too high. After adjusting the voltage, ensure that the charging current is below 0.5C, which is good for large-capacity lithium batteries. In the current society, lithium iron phosphate batteries are widely used in the cleaning industry due to their various advantages, and bring much convenience and speed to people's lives in industry, medical treatment and transportation. 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: Origin and development of lithium batteries