The correct charging method of lithium iron phosphate battery pack

(1) Constant voltage charging method: During the charging process, the output voltage of the charging power supply remains constant. Following the change in the state of charge of the lithium-ion battery pack, the charging current is automatically adjusted. If the specified voltage is constant, it can guarantee the full charge of the power lithium battery, but also eliminate gassing and water loss. This kind of charging method only considers the change of the single state of the battery voltage, 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 battery. In view of this shortcoming, constant voltage charging is rarely recycled. (2) Constant current charging method: During the whole charging process, the charging current is kept constant by adjusting the output voltage. To keep the charging current stable, the charging rate is relatively low. The constant current charging control method is simple, but because the current capacity of the lithium-ion battery pack gradually decreases with the charging process, in the later stage of charging, the power lithium battery receiving capacity decreases, and the charging current operation rate is greatly reduced. The benefits of this method are simple, convenient, easy to implement, and easy to care about charging power. (3) Constant current and constant voltage charging method: This charging method is the simple unity of the above two. In the first stage, the essentials of constant current charging are recovered to prevent excessive charging current at the beginning of constant voltage charging. The second stage recovers the essentials of constant voltage charging to prevent overcharging during constant current charging. The lithium iron phosphate battery pack communicates with any other sealed rechargeable batteries, and the charging must be controlled, not overcharging, otherwise the battery will be easily damaged. Lithium iron phosphate batteries generally recycle the charging method of first constant current and then voltage limiting. (4) Chopper charging method: recycle the essentials of chopping to conduct charging. Under this method, the current of the constant current source is stable, and the switch tube is controlled so that it is turned on for a period of time and then turned off for a period of time. The advantage of this method is that when the battery is charged through an external circuit, The internal ion of the battery must have a certain response time. If it is continuously charged, it will probably reduce its capacity potential. After charging for a period of time, intervening in a shutdown time can allow the ions present in the north and south poles of the battery to have a diffusion process, so that the battery has a time for digestion, which will greatly increase the operating rate of the battery and improve it. Charging result. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.