Lithium iron phosphate battery( LiFePO4 battery ) pack charging mode
(1) Constant voltage charging method:
During the charging process, the output voltage of the charging power supply is kept constant.With the change of the charge state of the lithium iron phosphate battery pack, the charging current is automatically adjusted. If the specified voltage constant value is appropriate, it can not only ensure the complete charging of the power battery, but also reduce gas and water loss as far as possible.This charging method only considers the change of the battery voltage, which can not reflect the whole charging condition of the battery effectively.Its initial charging current is too large, often causing damage to the power battery.In view of this disadvantage, constant voltage charging is rarely used.
(2) Constant current charging method:
During the whole charging process, the charging current is kept constant by adjusting the output voltage.Keeping the charging current constant, the charging rate is relatively low.Constant current charging control method is simple, but because the lithium battery's acceptable current capacity is gradually decreased with the process of charging, to the later period of charging, the power battery's receiving capacity decline, charging current utilization greatly reduced.The advantages of this method are simple operation, convenience, easy to realize, easy to calculate the charge.
(3) Constant current and constant voltage charging method:
This charging method is a simple combination of the above two. In the first stage, constant current charging method is adopted to avoid excessive charging current at the beginning of constant voltage charging. In the second stage, the constant voltage charging method is adopted to avoid the overcharging phenomenon caused by constant current charging. Lithium iron phosphate battery pack is the same as any other sealed rechargeable battery, needs to control the charge, not excessive charge, otherwise easy to damage the battery. Generally, the charging method of lithium iron phosphate batteries is constant current and then voltage limit.
(4) Chopper charging method: The chopper charging method is adopted. Under this method, the constant current source current, and switch tube controls the charge circuit, to make it open again after a period of time off for a period of time, cycle, the advantage of this approach is that when through an external circuit for the battery, the battery inside the ion needs to have certain response time, if continued to charge of it, may reduce the potential of its capacity.And after charging for a period of time, add a turn off time, can let the battery bipolar ions have a diffusion process, so that the battery has a "digestion" time, which will make the battery utilization rate greatly increased, improve the charging effect.
Starlight is a professional manufacturer engaging in research, development, production, marketing and service of lithium ion battery pack and battery management system.
LiFePo4 is the major and super safe material. We have more 30 types of battery model, and could make OEM battery pack from 12v-200v, 10-200ah, which can be used in cars starting, motorcycle, electric vehicle, E-bike, UPS, energy storage system, E-scooter, E-tools,unmanned airplane, golf cart, fork lift, cleaning car , electric wheelchair, etc.
If you have any questions about the LiFePO4 battery, you can contact us! We can quickly deal with your problem!