Humidifier for fuel cell system and debugging and working method thereof

Abstract

The invention provides a humidifier for a fuel cell system and a debugging and working method of the humidifier. The humidifier is characterized in that a plurality of humidifying membrane assemblies are arranged in the humidifier; the humidifier is provided with a dry air flow channel and a wet air flow channel; the dry gas flow channel and the wet gas flow channel coincide at the humidifying film assembly; a humidity sensor is arranged at the outlet end of the dry gas flow channel; the first guide valve plate is arranged at the inlet end of the dry gas flow channel or the wet gas flow channel; the opening degree of the first guide valve plate is adjusted through the first actuator, the flowing path of the airflow is changed, the contact space of the airflow and the humidification membrane assembly is increased or decreased, and wet airflow and dry airflow conduct moisture exchange through the humidification membrane assembly which is in contact with the first guide valve plate. The flowing path of the air flow can be changed through the arranged first guide valve plate, so that the dry air flow passes through the wetted humidifying film assembly as much as possible, and the humidity of the output dry air flow is finely adjusted under the condition of the same air inflow.

Description

technical field [0001] The invention relates to the technical field of a humidifier, in particular to the technical field of a humidifier used in a fuel cell system. Background technique [0002] A fuel cell is a power generation system that converts the chemical energy of fuel into electrical energy by chemically reacting with oxygen or other oxidizing agents. Hydrogen is typically the most common fuel, but hydrocarbons such as natural gas and alcohols like methanol are also sometimes used as fuels. [0003] A fuel cell system typically includes a cell stack that includes a plurality of individual fuel cells forming a power generating assembly, each having a cathode and an anode that allow electrical charge to move across the fuel cell. The fuel cell system also includes an air supply device that supplies air to a cathode of the fuel cell and a hydrogen gas supply device that supplies hydrogen to an anode of the fuel cell. Here, hot and humid air is exhausted from the cat...

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a humidifier for a fuel cell system and its debugging and working methods, which are used to solve the uneven distribution of water vapor and humidification efficiency in the prior art decrease, and the inability to adjust the humidity of the dry airflow from the humidifier

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