Fuel cell system structure having hydrogen circulation and heat exchange functions

Abstract

The invention provides a fuel cell system structure having hydrogen circulation and heat exchange functions. The fuel cell system structure comprises at least one fuel cell stack, an intermediate connection plate, a hydrogen convergence box, a hydrogen circulation pump, a gas-liquid separator and a heat preservation pipeline, wherein the intermediate connection plate is fixedly connected with theat least one fuel cell stack, an end surface of the intermediate connection plate is connected with a hydrogen inlet / outlet passage and a cooling liquid outlet of a front end plate, a hydrogen total inlet, a hydrogen total outlet and a cooling liquid total outlet are arranged in the other end surface of the intermediate connection plate, the hydrogen convergence box is arranged around the hydrogentotal inlet, a hydrogen outlet formed in one side of the hydrogen convergence box is connected with the cooling liquid inlet, the hydrogen total inlet and the cooling liquid outlet, a humid hydrogeninlet, and a dried hydrogen inlet and a cooling liquid outlet are arranged in the other side of the hydrogen convergence box. A component having an integration function is employed, the hydrogen circulation pump and the heat preservation pipeline are utilized, high-efficient utilization of hydrogen is achieved, and minimum volume of the fuel cell system is achieved as well as the high-power outputperformance of the fuel cell system is improved.

Description

technical field [0001] The invention relates to the field of proton exchange membrane fuel cells, in particular to a fuel cell system structure with hydrogen circulation and heat exchange functions. Background technique [0002] Because the proton exchange membrane fuel cell has outstanding features such as rapid startup at room temperature, no electrolyte loss, easy water discharge, long life, high specific power and specific energy, it is suitable as a power system for vehicles and other vehicles. Usually, the fuel cell stack, the core component of the fuel cell system, must use moist oxidant gas (air) and reductant gas (hydrogen) to provide continuous power to the outside, or at least one of the two should be wet. By using air humidification, the fuel cell system is easy to ensure smooth operation at low load, which is easier to achieve in comparison. As the main driving energy generating device of a passenger car, the fuel cell system is generally installed in the engin...

AI Technical Summary

Problems solved by technology

It is worth mentioning that currently, the hydrogen cycle does not heat up the newly incoming hydrogen, which would have a detrimental effect on the fuel cell stack

At the same time, the layout of the hydrogen circulation pump is often directly installed on the fixed plate, and the optimization of the vibration reduction effect needs to be improved

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