Device for integrating an energy storage system into on-grid photovoltaic installations, and a photovoltaic installation

Abstract

The subject of the application is a device for incorporating an energy storage into on-grid photovoltaic installations and a photovoltaic installation.A device (1) comprising at least one single-, two- or three-phase AC input (2), an AC current measuring circuit (3), a battery charging circuit (5), at least one DC input / output (6), a DC / DC converter (9), a control circuit (10), an output for connection to a battery (7) characterized in that the AC input (2) of the device (1) is connected to an AC input of a battery charging circuit (5), the battery charging circuit (5) is an AC / DC converter and its DC output is connected to a battery charging output (7) or directly to a battery (8) and to a DC input of a DC / DC converter (9), the output of the DC / DC converter (9) is connected to a DC input / output (6) of the device (1), the AC current measuring circuit (3) and the AC input (2) and the DC input / output (6) are connected to a control circuit (10), the outputs of the control circuit (10) are connected to the DC / DC converter (9) and the battery charging circuit (5).