Battery charging question

肖柳子

Battery charging question [Copy link]

    The microcontroller PWM charges the battery (in two stages of constant voltage and constant current). During the charging process, the system power is cut off and charging stops. The battery discharges to the load for a period of time. When the system power is restored, the battery stops supplying power to the load. If the battery needs to be charged again at this time, how can we determine whether the battery needs constant voltage or constant current charging range? Thank you

maychang

The battery terminal voltage after discharge should be used to determine whether constant voltage or constant current mode should be adopted when the battery continues to be charged.

chunyang

The charging process is determined by the terminal voltage of the battery. Regardless of whether the situation described by the original poster exists, the first thing to do when charging is to detect the terminal voltage of the battery, rather than constant current or constant voltage. Therefore, the original poster does not need to care about other things, just care about the terminal voltage.