What are the charging methods and advantages of energy storage lithium iron phosphate battery packs?

Energy storage lithium iron phosphate battery pack charging method (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 lithium iron phosphate battery pack changes, the charging current is automatically adjusted. If the specified voltage is constant, it can not only ensure the full charge of the power lithium ion battery, but also minimize gassing and water loss. This charging method only considers the change of the battery voltage in a single state, and cannot effectively reflect the overall charging status of the battery. Its initial charging current is too large, which often causes damage to the power lithium-ion battery. In view of this shortcoming, constant voltage charging is rarely used. (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 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. The advantages of this method are simple, convenient, and easy to implement, and the charging power is easy to calculate. (3) Constant current and constant voltage charging method: This charging method is a simple combination of the above two. The constant current charging method is used in the first stage to prevent excessive charging current at the beginning of constant voltage charging. The second stage adopts the constant voltage charging method to prevent 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 overcharged, otherwise the battery will be easily damaged. Lithium iron phosphate batteries generally adopt a charging method of constant current first and then voltage limiting. Advantages of energy storage lithium iron phosphate battery pack ① Ultra-long life: The power lithium ion battery with lithium iron phosphate as the cathode material has a cycle life of more than 2000 times. ②Quick charge and discharge: It can charge and discharge quickly with 2C high current. ③Safe use: The lithium iron phosphate battery pack will not explode even in the worst traffic accidents, and has undergone strict safety tests. ④High temperature resistance: The thermal peak value of lithium iron phosphate battery can reach 350~500℃, the working temperature range is wide (-20~+75℃), and it can still release 100% capacity under high temperature (60℃). 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 are the classifications of lithium batteries for new energy vehicles?