What is the principle of lithium battery charger
The battery receives electrical energy from an external circuit and converts it into the chemical energy of the battery. After the energy of the battery is consumed by discharge, it can be recovered by charging and can be re-discharged to form a charge-discharge cycle.
During the charging process, we usually use direct current for charging, but special methods such as asymmetric alternating current or pulse current can also be used.
Different charging methods are suitable for different scenarios and needs.
For example, constant current charging can keep the charging current constant, which is suitable for conventional charging of most batteries; constant voltage charging keeps the charging voltage constant, which is suitable for fine adjustment when the battery is close to full charge; floating charge is used to maintain the battery in a fully charged state without deep charging; trickle charge is a small current charging method, which is suitable for long-term slow charging of the battery; fast charging shortens the charging time by increasing the charging voltage or current, but it may have a certain impact on the battery life.
According to the formula of power = voltage * current * time, when the power is fixed, the charging time can only be shortened by increasing the voltage or increasing the current.
