EV battery
How to charge a new lithium battery?
by:Vglory
2021-04-09
How to charge a new lithium battery? As we all know, the lithium battery pack has no memory and can be charged at any time. Using the correct charging method to charge the lithium battery pack can prolong the service life of the battery pack and prevent potential safety hazards. The following is how to charge a new battery and how to charge a lithium battery pack. The charging process of lithium batteries can be divided into four stages: trickle charge (low-voltage precharge), constant current charge, constant voltage charge and charge termination. Lithium battery pack charging method: the first stage: trickle charge trickle charge is used to pre-charge a fully discharged battery. When the lithium battery voltage is lower than about 3V, trickle charging is used. The trickle charging current is one-tenth of the constant current charging current, that is, 0.1c (for example, the constant current charging current is 1A, and the trickle charging current is 100mA). The second stage: constant current charging. When the battery voltage rises above the trickle charging threshold, the gradual charging current is used for constant current charging. The current for constant current charging is between 0.2c and 1.0c. As the constant current charging process progresses, the voltage of the lithium battery gradually increases. In general, the voltage of a single battery is set to 3.0-4.2v. The third stage: constant voltage charging. When the battery voltage rises to 4.2v, the constant current charging is completed and the constant voltage charging stage begins. According to the fullness of the battery, as the charging process continues, the current gradually decreases from the maximum value. When the current decreases to 0.01C, the charging is considered to be stopped. Stage 4: Charge termination-There are two typical methods of charge termination: choose the minimum charging current or choose a timer. The minimum current method monitors the charging current in the constant voltage charging stage, and stops charging when the charging current drops to 0.02~0.07c. The second method is to start from the constant voltage charging stage and stop charging after two hours of charging. At this point, we know how to have a charging theory for lithium battery packs. Users of lithium batteries just follow the normal charger clarification method. Since the design of the normal lithium battery charger is based on the characteristics of the lithium battery charging form, it includes In the process of constant current and constant voltage charging, we only need to identify whether the battery is fully charged according to the light on the charger. How to charge a new lithium battery? How to charge a lithium battery for the first time? When using a lithium battery, it should be noted that the battery enters the dormant state after a period of time, and the capacity at this time is lower than the normal value. Also shortened. But the activation of the lithium battery is very simple, only through 3-5 normal charge and discharge cycles to activate the battery and restore the normal capacity. Due to its own characteristics, lithium batteries have almost no memory effect. Therefore, the new lithium battery does not require special methods and equipment during the activation of the user's mobile phone. From a theoretical and practical point of view, the effect of whether the first recharged lithium battery pack is recharged after use or recharged after use is exactly the same. The above content is limited to the power-saving author who knows some common sense, light, welcome to correct me. For the correct charging method of the lithium battery pack and how to charge the newly purchased lithium battery for the first time, I hope it will be helpful to you. 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: The difference between the capacity unit of lithium battery mAh and Wh
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