Fluid immersion cooling system

A fluid immersion cooling system, comprising a housing, a circuit board and a partition, wherein the housing has an accommodating cavity, and the accommodating cavity is configured for accommodating cooling liquid;

• there are a plurality of circuit boards, the plurality of circuit boards are spaced apart from each other in the accommodating cavity and are all located at a bottom of the housing, and a side of the circuit board close to the bottom of the housing is provided with a guide hole;
• there are a plurality of partitions, and one partition is located between two adjacent circuit boards and spaced apart from the corresponding circuit board;
• areas between the partitions and the circuit boards, top areas of the partitions and the guide holes together form a continuously bent flow channel for the cooling liquid to flow.