System with multiple functions of energy storage, internet of things and disaster communication and control method thereof

A control method of a system with multiple functions of energy storage, IoT and disaster communication, comprising the following steps:

• (a) providing a system with multiple functions of energy storage, IoT and disaster communication;
• the system including a power input, a digital meter, an energy storage battery pack, a power inverter, an automatic transfer switch system, a human-machine interface and an energy management controller;
• the energy management controller being connected to the power input, the digital meter, the energy storage battery pack, the power inverter, the automatic transfer switch system and a communication device with Internet of things (IoT) and wireless communication function, and being used to control the energy storage battery pack into a charge/discharge mode or into a protection mode and to receive at least frequency conversion, voice or text messages from the communication device with IoT and wireless communication function;
• and the energy management controller controlling the automatic transfer switch system to enable an emergency power supply control procedure when a utility power grid tripping occurs in any emergency condition;
• (b) the energy management controller determining whether the utility power grid is currently supplying power to the system or not;
• (c) if not, the energy management controller controlling the automatic transfer switch system to enable the emergency power supply control procedure and further determining a state of charge (SoC) or energy storage of the energy storage battery pack;
• wherein the emergency power supply control procedure is performed when it is determined the energy storage of the energy storage battery pack is larger than a first SoC threshold, or the emergency power supply control procedure is performed while the energy management controller keeps determining the energy storage of the energy storage battery pack when it is determined the energy storage of the energy storage battery pack is smaller than the first SoC threshold, or the energy storage battery pack is controlled into a low voltage protection mode when it is determined the energy storage of the energy storage battery pack is smaller than or equal to a second SoC threshold;
• and wherein the first SoC threshold is larger than the second SoC threshold;
• and
• (d) if yes, the energy management controller determining a state of charge (SoC) or energy storage of the energy storage battery pack;
• wherein the energy management controller calculates a required power consumption of a store that uses the system when it is determined the energy storage of the energy storage battery pack is larger than a first SoC threshold, or the energy management controller controls the energy storage battery pack into a peak load shaving mode when it is determined the energy storage of the energy storage battery pack is smaller than the first SoC threshold.