What are the charging voltages and charging methods for lithium iron phosphate battery packs?

The charging voltage of the lithium iron phosphate battery pack should be set at 3.65v, and the nominal voltage is 3.2v. Generally, the maximum charging voltage can be 20% higher than the nominal voltage, but too high voltage can easily damage the battery, and the 3.6v voltage is lower than this index. , There is no overcharge. If the battery is set to be charged at the lowest 3.0v, then 3.4v is 0.4v higher than the lowest, and 3.6 is 0.6v higher than the lowest. This 0.2v can release half of the electric energy, which means that every time it is charged, it is half more than 3.4v. Use time, because the battery is used for a certain number of times, this will increase the life by half, so if the charging voltage is added without damaging the battery, the battery life will be increased. The 3.6v charging limit of the lithium iron phosphate battery pack design must be based on the actual use of the lithium battery, which can fully activate the battery capacity to the maximum without damaging the battery. The number of charging refers to the number of full charge and discharge cycles. The design is 3.4V although there is no Overcharging is just like, but there will be a small number of people who do not participate in the cycle of charging and discharging, and most of the participants will increase to a certain number of cycles due to the number of cycles, and the performance will still deteriorate, and the vicious cycle will become unusable. This is the limitation of its life, the overlap of various unsuspecting harmful and unfavorable factors, and the inevitable performance cannot maintain the original design parameters. What are the charging methods for lithium iron phosphate battery packs? (1) Constant voltage charging method: During the charging process, the output voltage of the charging power supply remains constant. As the state of charge of the power lithium-ion battery changes, the charging current is automatically adjusted. If the specified voltage is constant, it can not only ensure the full charge of the iron-lithium battery pack, but also minimize gassing and water loss. (2) Constant current charging method: During the entire charging process, the charging current is kept constant by adjusting the output voltage. Keep the charging current constant, the charging rate is relatively low. The constant current charging control method is simple, but because the acceptable current capacity of the lithium iron phosphate battery pack gradually decreases with the progress of the charging process, in the later stage of the charging, the power receiving capacity of the power lithium-ion battery decreases, and the charging current utilization rate is greatly reduced. . (3) Constant current and constant voltage charging method: the first stage adopts the constant current charging method to guard against excessive charging current at the beginning of constant voltage charging. The second stage adopts the constant voltage charging method to guard against the phenomenon of overcharging during constant current charging. Lithium iron phosphate battery packs are the same as any other sealed rechargeable batteries. The charging must be controlled, and excessive charging is not allowed, otherwise the battery will be easily damaged. Lithium iron phosphate battery packs generally adopt a charging method of constant current first and then voltage limiting. Reminder: When using the lithium iron phosphate battery pack, pay attention to waterproof and dustproof, so there should be no water in the storage place, which will affect the performance and service life of the battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.