Vehicle proton exchange membrane fuel cell air supply system and working method

Abstract

The invention discloses a vehicle proton exchange membrane fuel cell air supply system and working method, and the system comprises an air filter, an air flow meter, an air compressor, an oxygen storage tank, a three-way proportional valve, an intercooler, a radiator, a cooling fan, a water pump, a humidifier, a mixer, a circulating pump, a fuel cell stack, a drain valve, a water-steam separator and a three-way valve, and the working method comprise the working methods of the fuel cell air supply system under the working conditions of low-temperature pre-starting and normal driving of the fuel cell and the working method of the fuel cell air supply system under the working conditions of high altitude and low oxygen. According to the vehicle proton exchange membrane fuel cell air supply system and working method, a fuel cell vehicle can run under a normal running working condition and a high-altitude low-oxygen working condition, efficient and stable operation of a fuel cell is ensured, and rapid warming-up of a fuel cell stack is realized; and the service life of the fuel cell and the operation stability of the system are improved.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an air supply system and working method for a vehicle-used proton exchange membrane fuel cell. Background technique [0002] With the country's increasing emphasis on environmental pollution and the goal of green development, the proton exchange membrane fuel cell, known as the "ultimate environmental protection engine", has been applied to fuel vehicles as a clean, pollution-free and efficient power generation device, and has been carried out demonstration promotion. For vehicle fuel systems, the air supply system is an indispensable auxiliary system. Existing fuel cell air supply systems cannot work well under high-altitude and low-oxygen conditions. How to innovatively propose a proton exchange membrane fuel cell air supply system for vehicles, so that fuel cell vehicles can operate in normal driving conditions? It is an urgent problem in this field to be able to drive un...

AI Technical Summary

Problems solved by technology

Existing fuel cell air supply systems cannot work well under high-altitude and low-oxygen conditions. How to innovatively propose a proton exchange membrane fuel cell air supply system for vehicles, so that fuel cell vehicles can operate in normal driving conditions? It is an urgent problem in this field to be able to drive under high-altitude and low-oxygen conditions and ensure the efficient and stable operation of fuel cells.

[0003] Invention patent CN201811554594.5 proposes a fuel cell air supply system and air supply method. The disadvantage of this patent is that it only provides a method for fast warm-up and start-up of the fuel cell in a low-temperature environment, and cannot quickly Warm up the engine and fail to provide a fuel cell air supply method under special working conditions; the invention patent CN201910690153.6 proposes an air supply system and method for a fuel cell engine, which only provides a possible energy recovery and improves energy utilization efficiency air supply system and method, also failed to provide fuel cell air supply method under high-altitude low-oxygen conditions

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