Gas-liquid separator with controllable separation efficiency and fuel cell module

The invention provides a gas-liquid separator with controllable separation efficiency and a fuel cell assembly, the gas-liquid separator comprises a shell, a gas-liquid separation cavity is formed inthe shell, a plurality of separation baffles are arranged in the gas-liquid separation cavity, and the separation baffles are arranged between the separation baffles and the inner wall of the shell. Or channels for air and water to pass through are formed among the plurality of separation baffles, the angle of at least one separation baffle is adjustable, and the sectional area of the channel corresponding to the angle-adjustable separation baffle is changed along with the adjustment of the angle of the separation baffle. According to the gas-liquid separator with the controllable separation efficiency and the fuel cell assembly, the separation efficiency of the gas-liquid separator can be controlled by adjusting the cooling flow in the first separation baffle plate and controlling the angle of the third separatio