Proper charging method of lithium battery

In recent years, the lithium battery market share increase rapidly. Lithium battery development is rapid. The relevant data shows that lithium ion battery market is expected to reach 450 billion yuan in 2020. As more and more people use lithium battery, there is some concern and hidden trouble. At present, lithium ion batteries technology is mature. Using lithium batteries properly to charge and discharge the lithium battery, can not only guarantee the life of the battery, but also eliminate potential safety problems.

How for lithium battery charging problem, we know that lithium batteries need to form a complete set of charger, in industrial market, because each product is single, each other is not universal, therefore, should according to used lithium battery pack choose corresponding charger, charging in strict accordance with the requirements. Both industrial and civil market, due to the basic principle of lithium ion battery to charge is consistent, thus, the steps for the lithium battery, standards can be specifications, in general, the nominal voltage of 3.7 V lithium battery, charging voltage is 4.2 V. Below we to 1000 mAh capacity of the battery as an example to illustrate the lithium battery charging method correctly.

The original right of lithium battery charging method is as follows

Lithium batteries are divided into two phases:

One, constant current charge, that is, a certain current, and lithium battery voltage with the charging process gradually rise, according to the above standard take the charging current of 0.2 C (C is a sign of nominal capacity battery current control methods, 0.2 C or 200 ma), when the battery voltage is close to full electric voltage of 4.2 V, the change of constant current charging for constant voltage charging. This process is about five hours.

Second, the constant voltage charging, the voltage must be, and current with the batteries saturation degree deepen gradually decreases, and in accordance with the specification, when the current is reduced to 0.01 C or 10 ma, think charging termination. The process and the constant current charging time add up to the total charging time should not more than eight hours. Therefore, whether the lithium battery has reached saturation, there are two standard: one is the current of 0.01 C, 2 it is the total length is not more than eight hours, in other words, the lithium battery charging process if still can't reached 0.01 C, after eight hours, as nonconforming product. At this point, how are we to the lithium battery charging with a theoretical knowledge of the user to lithium batteries, just according to the normal charger manual methods on the can, because the normal lithium battery charger is designed according to the characteristics of lithium battery charging mode, which includes the process of constant current and constant voltage charge, we just need according to the light on the charger to judge whether the battery is fully charged. Charger abnormal case, we can to eight hours of time as a basis for (premise condition is your charger is 0.1 C).

The page contains the contents of the machine translation.