Count several commonly used protection circuits (III)

Battery undervoltage protection:

In order to prevent the battery from being over-discharged and damage the battery, we need to let the inverter stop working when the voltage is discharged to a certain voltage. It should be pointed out that if the battery under-voltage protection is too sensitive, it will be protected when the impact load is started. This makes it difficult for the inverter to start such loads, especially if the battery is not sufficiently charged. Please see the battery undervoltage protection circuit below.

It can be seen that this circuit can quickly establish the battery sampling voltage and delay protection due to the addition of D1 and C1.