ENERGY STORAGE SYSTEM HAVING MULTIPLE DEVICES CONNECTED IN PARALLEL AND CHARGING AND DISCHARGING CONTROL METHOD THEREOF

The present application relates to the technical field of energy storage power supplies, and in particular, to an energy storage system having multiple devices connected in parallel and a charging and discharging control method thereof. The energy storage system having multiple devices connected in parallel comprises: a single-path renewable energy device, at least two energy storage devices, an alternating-current bus, and a load. When the renewable energy device is connected to any one of the at least two energy storage devices, a master and a slave are determined. The master is configured to: dynamically acquire first data, second data, and third data; according to the first data, the second data, and the third data, determine a current state of the energy storage system having multiple devices connected in parallel; when the current state meets a charging condition, control the renewable energy device to provide electric energy to the master; and when the master is in a full-power state, control the renew