Distribution network power supply online capacity checking control method and device, distribution network power supply and storage medium

The invention discloses an online capacity checking control method and device for a distribution network power supply, the distribution network power supply and a storage medium, and the method comprises the steps: controlling a temperature adjustment device to output a cold medium or a hot medium to a battery compartment when the temperature in the battery compartment is detected out of a preset temperature range, collecting the voltage and current of a battery, and storing the collected voltage and current in the battery compartment; inputting the collected voltage, current and temperature into a capacity prediction model to obtain the predicted capacity of the battery when a preset nuclear capacity condition is met, calculating the confidence coefficient of the predicted capacity according to the collected temperature, voltage and current, and determining the predicted capacity as the nuclear capacity of the battery when the confidence coefficient is greater than a threshold value. The temperature adjustin