Single-layered immersion cooling battery module and stacked immersion cooling battery module

A single-layered immersion cooling battery module comprising:

• a tank having an accommodation space, at least one battery cell and a battery management circuit board are arranged in the accommodation space, and the accommodation space is filled with an insulating cooling liquid to immerse the at least one battery cell and the battery management circuit board;
• an upper cover arranged on a top of the tank and penetrated with a gas discharging channel, the gas discharging channel is provided with a pressure relieving and superheat releasing device, so that the tank and the upper cover form a closed space, the pressure relieving and superheat releasing device opens the gas discharging channel based on pressure or temperature of the closed space, so that the accommodation space communicates with the gas discharging channel, and the gas discharging channel guides generated gas in the closed space to flow out, so as to adjust pressure or temperature of the closed space;
• and
• a gas filtering device, arranged on a top of the upper cover, covering the pressure relieving and superheat releasing device, a side of the gas filtering device is provided with a gas outlet, and the gas filtering device is configured to filter the generated gas and discharge the filtered generated gas from the gas outlet.