Introduction Lithium battery charging process and charging precautions

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Four processes for charging of lithium ion batteries: The most suitable charging process of lithium-ion batteries can be divided into four stages: trickle charging, constant current charging, constant voltage charging and charging termination. Stage 1: Trickle charging trickle charger first pre-charged the fully discharged lithium ion battery unit (recovery charging). When the battery voltage is less than 3V, charging the battery first using a constant current of the maximum 0.

1c. Phase 2: Constant current charging When the battery voltage rises to the trickle charging threshold, improve the charging current for constant current charging. Constant current charging current between 0.

2c to 1.0c. The current at constant current charging does not require it very accurate, and the regular constant current can also.

In linear charger design, current often increases with the rise of the battery voltage to minimize heat dissipation problems on the transmission transistor. Phase 3: Constant voltage charging When the lithium ion battery voltage rises to 4.2V, the constant current charging ends and starts the constant voltage charging phase.

In order to achieve the best performance, the regulator tolerance should be better than + 1%. Stage 4: Different charging and nickel batteries, it is not recommended to continuously charge lithium ion batteries. Continuous trickle charging can result in a plate electroplating effect of metal lithium.

This will make the battery unstable and may result in sudden automatic fast disintegration. What is precautions for lithium-ion battery charging? ⒈ Prevent charging under the overheightening, such as the predetermined operating temperature, that is, the use of lithium ion batteries in the 35C or more environment, the battery will continue to decrease, that is, the power supply time of the battery will not be as long as it is often. If you are charged at such temperatures, the damage to the lithium ion battery will be larger.

Even if the battery is stored in a hot environment, the quality of the battery will cause corresponding damage to the quality of the battery. Therefore, try to maintain a good way to extend the life of lithium-ion battery life. ⒉ Prevents charging at a low temperature, such as low temperature environments, ie 4C below 4C, and also find that the battery use time is reduced, some mobile phone's original lithium electricity is even charged in a low temperature environment.

But don't have to worry too much, this is just a temporary situation, different from the use of high temperature environments, once the temperature rises, the molecules in the lithium ion battery are hot, and immediately return to the previous power. ⒊ often use life lies in sports. To play the maximum effectiveness of lithium-ion batteries, it is necessary to use it, so that the electrons in lithium electrons are always in a flow state.

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