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When charging, it is the flat cable connected to the balanced charging board, which is usually directly connected in series from both ends for overall charging. The voltage of the charger is greater than the voltage of the battery pack. The voltage of each individual cell detected by the cable is equivalent to parallel connection of multiple voltage regulators. The charging voltage of the individual cells does not exceed the voltage regulator value, while other individual batteries continue to charge through the bypass of the voltage regulator. Because the power of each individual cell is almost fully charged at this time, it is only balancing each cell, so the charging current is low and each cell is fully charged to supplement the balance. The charger can only protect the voltage at the end of the entire battery pack. The balanced charging board ensures that each unit is overcharged and fully charged, and cannot stop the entire battery pack from charging because one battery cell is fully charged.
1. Some mobile phone chargers themselves are protected and stop charging when the voltage of the lithium-ion battery reaches 4.2 volts. My idea is to connect a slightly higher power silicon diode (positive voltage drop is about 0.6 V) between the Lithium iron phosphate ion battery and the charger in series. When the voltage of the Lithium iron phosphate ion battery reaches 3.6 V, plus the diode voltage drop is exactly 4.2 V, the charger can also detect it and stop charging.
2. The protection circuit of mobile phone battery, taken out, is used for the charging protection of Lithium iron phosphate ion battery. It is also based on the above principle that a diode is connected in series during charging, which plays a 4.2 volt protection role.
Well, the above is about the performance and charging method of Lithium iron phosphate ion battery. Various types of batteries have been increasingly used in daily life, and people can also learn more about different types of batteries made of different materials and their usage methods. Lithium iron phosphate ion batteries are also used in our daily life. Have you learned how to charge them?
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