Inverter and photovoltaic energy storage system

A photovoltaic energy storage system, the photovoltaic energy storage system comprising:

• an energy storage system;
• and
• an inverter, which comprises:
• a plurality of power devices;
• a chassis;
• and
• a partition and blocking assembly,
• wherein the plurality of power devices and the partition and blocking assembly are accommodated in a cavity of the chassis,
• wherein the partition and blocking assembly divides the cavity of the chassis into a first installation cavity and a second installation cavity,
• wherein a volume of the first installation cavity is less than a volume of the second installation cavity,
• wherein a part of power devices in the plurality of power devices are disposed in the first installation cavity, and another part of power devices in the plurality of power devices are disposed in the second installation cavity;
• wherein the chassis comprises a first side wall and a second side wall that are adjacent to each other,
• wherein the partition and blocking assembly comprises a fan,
• wherein an air inlet of the fan communicates with the first installation cavity, and an air outlet of the fan communicates with the second installation cavity,
• wherein a direction from the air inlet to the air outlet faces away from the first side wall,
• wherein a gap exists between the partition and blocking assembly and the second side wall, or the partition and blocking assembly is provided with a through hole,
• wherein a direct current input end of the inverter is configured to connect to a photovoltaic module, and
• wherein an alternating current output end of the inverter is connected to an alternating current output end of the energy storage system and a load.