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4. Short circuit protection function: In addition to controlling integrated circuits, another important element in the circuit is a MOSFET, which acts as a switching circuit because it directly connects the battery and external loads. This is because the conduction impedance affects the performance of the battery. When selecting MOSFETs, it is better, with very small conduction resistance, small internal resistance of the battery, strong load capacity, and less energy consumption during discharge. When your battery accidentally shorts, the shielding layer will automatically close within a few milliseconds and will not be charged, so it would be great if the anode and cathode collide.
The lithium-ion battery protection board is the charging and discharging protection for a series of lithium-ion batteries; After charging, it can ensure that the voltage difference between each individual battery is less than the set value (usually± 20mV), thereby achieving uniform charging of each individual battery and effectively improving the charging effect in series charging mode. Simultaneously detect the overvoltage, undervoltage, overcurrent, short circuit, and overtemperature states of each individual battery to protect and extend battery life. Low voltage protection can prevent battery damage during discharge due to over discharge.
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