How to charge lithium iron battery

Batteries have long been widely used in our lives. I believe that everyone has ever seen a battery, and the battery has a high status in all aspects of life. Whether it's a mobile computer flashlight or a remote control, there are batteries inside, enough to see that the battery has penetrated into every aspect of our lives. Nowadays, the form of the battery is not limited to ordinary batteries. More and more types of batteries are widely used in our lives. Let me introduce the performance and charging method of lithium iron phosphate battery.

lithium iron phosphate battery charging method

Lithium rechargeable batteries have been widely used. lithium iron phosphate batteries have many advantages due to their unique advantages. The charger for lithium iron phosphate batteries is different from ordinary lithium batteries. The maximum termination charging voltage of a lithium battery is 4.2 volts; the lithium iron phosphate battery is 3.65 volts (there is a maximum of 3.8 volts on the Internet), and the question now is: Can you use the charger of the mobile phone (slightly modified)? Charging lithium iron phosphate battery; or using a scrapped lithium battery protection circuit board (slightly modified) for charging protection of lithium iron phosphate battery.

Series battery current is consistent, then charging, low capacity will be full of, but the overall voltage to charge cut-off voltage, will continue to charge the overcharge, discharge, cycle number is much, will damage, so there is always one of the worst series batteries. Protective plate is not a single charge, but to protect, if without a balanced function, is the worst of protection, the actual overall is not full. Even with balanced protection plate, is also a false balance, through the shunt resistance, the bypass of the battery, to continue with other battery, to achieve the overall effect, because the bypass resistance power is limited, it will make a great general 100mah, in fact, for the whole battery pack in the ocean. Actually series battery equalization, can say is the world's problems, low cost of large current balance, and the serial number, the greater the equilibrium of the more difficult. It’s because bad series battery overcharge discharge control, and lithium electricity charge discharge damage extremely fast, and security issues, to the development of lithium iron phosphate, lithium iron phosphate capacity is low, the energy is also low, various aspects than lithium electricity, is because of its resistance to overcharge, to be popular.

Ribbon cable is to protect the board don't need a thick line of line, red black line is the power supply line, after the current big need bold lines. It’s detection of each monomer batteries voltage protection plate, both to protect each monomer, but discharge protection but also recharge, otherwise can't discharge or charge by protecting plate, protective.

When charging, it is the cable that balances the charging board. Generally, the whole charging is directly connected in series from both ends, and the charger voltage is greater than the battery voltage. The cable detects the voltage of each cell, which is equivalent to a parallel voltage regulator. The charging voltage of the cell does not exceed the regulation value, while the other cells continue to be charged and bypassed by the Zener diode. Because the charge of each cell is almost full at this time, just balancing each cell, so the charging current is small. And the balance is filled with each cell. The charger can only protect the voltage of the entire battery pack. The balance of the charging board is to ensure that each unit is overcharged and that each unit is full. It cannot stop charging the entire battery pack because one of the batteries is full.

1, some mobile phone charger is to protect itself, when detect the lithium battery voltage is 4.2 v, it stops charging. My train of thought is in the lithium iron phosphate batteries and chargers in series between a power slightly larger silicon diode (positive pressure drop is about 0.6 v) when charging, such as lithium iron phosphate battery voltage is 3.6 v, and the pressure drop of the diode is 4.2 v, can also be charger detected, stop charging.

2, mobile phone battery protection circuit, and used in lithium iron phosphate battery charging protection, but also in charging time series according to the principle of the above a diode, the 4.2 v protection.

The above is about the performance and charging method of lithium iron phosphate battery. Various batteries have been used more and more in life, and you can learn more about the different types of batteries and how to use them. I hope this article can help everyone.

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