Charging method of lithium iron phosphate battery

The battery in our life has been widely used. Battery has high status in all aspects of life. Whether mobile computer torch or remote control, have a battery inside, which means that battery has already penetrated into every aspect of our lives. But now, the battery has not only confined to the ordinary battery in the form. More and more types of batteries are widely used in our life. Let' me introduce lithium iron phosphate batteries performance and charging method on below.

Iron phosphate lithium battery charging method

Iron phosphate lithium battery charging method

Lithium rechargeable batteries have been widely used. The lithium iron phosphate batteries due to its unique advantages, use up, too. The lithium iron phosphate battery charger with normal lithium battery is different. The highest end of lithium battery charging voltage is 4.2 v; lithium iron phosphate battery is 3.65 v (online and some said, the highest can't higher than 3.8 v), now the question is: can you use mobile phone charger (slightly modified) used in lithium iron phosphate battery charging; Or the use of scrap (slightly modified) lithium battery protection board used in lithium iron phosphate battery charging protection.

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, cyclic number is much, will be damaged, 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 100 mAh, 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 is because of 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, because of its resistance to overcharge too, to be popular.

Ribbon cable is to protect the board don't need a thick line of line, red and black line is the power supply line, after the current big need bold lines. Protective plate is detection of each monomer batteries voltage, discharge, though, both to protect each monomer charging protection but also, otherwise will not be able to discharge or charge by protecting plate, protective.

When charging, is balance pad line row, usually from both ends series overall charge directly, the charger voltage is greater than the battery voltage. The bottom line test of each monomer batteries voltage, equivalent to parallel stabilivolt, monomer charging voltage will not exceed voltage value, while other monomer charging the battery to charge by stabilivolt bypass. Because the power of each monomer is close to full of, just in the balance of each monomer, so the charging current is small, each cell is full of supplementary balance. The charger can only is to protect the voltage of the battery pack, balance pad is to ensure that each monomer of charging is each monomer is full, not because there is a battery full of caused to stop the battery.

lithium iron phosphate battery charging method

1, some mobile phone charger is to protect itself, when detect the lithium battery voltage is 4.2 v, stop 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.

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