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Charging precautions

From:CTECHI GROUP Limited     Release time:2019-04-23

Overview:Charging is an important step in the repeated use of batteries. The charging process of Lithium Manganese Dioxide battery for digital cameras is divided into two phases: a constant current fast charging phase and a constant voltage current decreasing phase.

Charging is an important step in the repeated use of batteries. The charging process of Lithium Manganese Dioxide battery for digital cameras is divided into two phases: a constant current fast charging phase and a constant voltage current decreasing phase. During the constant current fast charge phase, the battery voltage is gradually increased to the standard voltage of the battery, and then transferred to the constant voltage stage under the control chip, the voltage is no longer raised to ensure that it does not overcharge, and the current is gradually weakened as the battery power rises. Go to the set value and finally finish charging. The power statistic chip can calculate the battery power by recording the discharge curve. After repeated use of lithium-ion batteries, the discharge curve will change. Although lithium-ion batteries do not have a memory effect, improper charging and discharging can seriously affect battery performance.

Excessive charging and discharging of lithium-ion batteries can cause permanent damage to the positive and negative electrodes. Over-discharge leads to collapse of the negative carbon sheet structure, and collapse can cause lithium ions to be inserted during charging; excessive charging causes excessive lithium ions to be embedded in the negative carbon structure, and some of the lithium ions can no longer be released.

The amount of charge is equal to the charging current multiplied by the charging time. When the charging control voltage is constant, the charging current is larger (the charging speed is faster), and the charging amount is smaller. If the battery charging speed is too fast and the termination voltage control point is improper, the battery capacity will also be insufficient. Actually, some of the electrode active materials of the battery are not fully reacted and the charging is stopped. This phenomenon of insufficient charging is aggravated as the number of cycles increases. If you want to learn more about 3.6V 2000mah Li-SOCl2 battery,you can contact us.


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