Deep discharge can also lead to battery failure. An ideal lithium-ion battery charger should have voltage and current stabilization as well as a balancing system for battery banks. The voltage of a fully charged lithium-ion cell is 4.2 Volts. Once the bank reaches this voltage, charging should stop.
e +0 stops discharging. When battery voltage falls belowoverdischarge detection voltage due to overdischarge current, th +0 stop discharging by overdischarge current detection. In this case the recovery of battery volta e is so slow that if battery voltage after overdischargevoltage detection delay time is still lower than over
Improper charging can cause lithium-ion batteries to swell or even explode. Deep discharge can also lead to battery failure. An ideal lithium-ion battery charger should have voltage and current stabilization as well as a balancing system for battery banks. The voltage of a fully charged lithium-ion cell is 4.2 Volts.
Protection Circuits are crucial components in a BMS, safeguarding Li-ion batteries from potential risks such as overcharge, over-discharge, and short circuits. These protection circuits monitor and prevent overcharging, a condition that can lead to thermal runaway and damage. They may include voltage limiters and disconnect switches.
With quality components, this charging system can match commercial lithium-ion chargers, though it will produce more heat. The experiments demonstrated that the balancing circuit functions optimally. The charging process reaches completion upon attaining the designated voltage of 4.2 Volts. Overall, I would recommend utilizing this circuit.
From the above image, it is clear that one IC is responsible for overvoltage, overcurrent, and short circuit protection and that IC is DW01-A, whereas another IC BB3A is responsible for the cell balancing. DW01-A: Battery Protection IC DW01-A is a 1 cell Li-ion/ Polymer battery protection IC.