Modern people must learn the use of lithium batteries

First, the correct charging method for lithium batteries:

The chemical nature of lithium is very active and it is easy to burn. When the battery is discharged and charged, the internal temperature of the battery will continue to rise. The gas generated in the activation process will expand and the internal pressure of the battery will increase to a certain extent. If there are scars on the shell, it will rupture, causing fluid leakage, fire and even explosion.

1, charging:

The safe working voltage range of lithium battery is 2.8~4.2V. Below or above this voltage range, the lithium ions in the battery become very unstable and even cause accidents. In order to ensure that the battery is in a safe range, a special charger is required. These chargers automatically adjust the charging method based on the current state of the battery.

2. Activate:

Before the charger starts charging, it will supply the battery with a small current, and simultaneously detect the battery voltage change, and gradually increase the current until the set value. This process can be thought of as an active or test charge.

3, constant current transformer charging:

The charger charges the battery with a constant current. As the battery voltage increases, the charger simultaneously increases the charging voltage to speed up the charging.

4, variable current constant voltage charging:

When the battery reaches the 4.2V cut-off voltage, the battery is only about 70% of the battery (not full). At this point, the charger continues to charge the battery with a constant voltage and a decreasing current. The value is less than 0.1A. The charging still stops when the battery voltage continues to rise.

Second, the storage voltage of the model lithium battery

The model lithium battery is generally a lithium polymer battery, and the minimum value of the safe use voltage is 3.6V, but in order to ensure that the battery will not be damaged due to excessive discharge, the minimum safe voltage is 3.7V, and the maximum charge cut-off voltage is 4.2V, when the voltage is the highest, the battery energy storage is the peak. If the high voltage is not used for a long time, the gas generated by the reaction in the lithium battery cell will start to collect and start to accumulate. After a long time, the lithium battery will bulge. In order to avoid this situation, the storage voltage of the model lithium battery is generally controlled at 3.7~3.8V.

Third, lithium battery storage conditions

The most critical storage conditions for model lithium batteries are temperature and humidity. Generally, room temperature has little effect on the state of lithium batteries, but there is no direct sunlight. High temperature can easily cause model lithium batteries to bulge or explode, so model lithium batteries will generally be used. They need to be stored in a tin box or plastic box that is protected from light and gas. If the discharge performance of a single model lithium battery is very good, you need to purchase a model lithium battery explosion-proof protection bag. This reinforced bag has a reinforcing mesh inside to prevent high-energy model lithium battery. Harm to other items in the event of a gas leak.

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