Low-temperature cold starting operation system for proton exchange membrane fuel cell

Abstract

The invention discloses a low-temperature cold starting operation system for a proton exchange membrane fuel cell. The system comprises: the feed end of the proton exchange membrane fuel cell is connected with an electricity generating hydrogen gas input pipe and an electricity generating air input pipe, wherein the electricity generating hydrogen gas input pipe is communicated with a hydrogen gasbottle through a hydrogen gas input header pipe, the electricity generating air input pipe is communicated with an air compressor through an air input header pipe, a refrigerant circulating pipe is arranged between the feed end and discharge end of the proton exchange membrane fuel cell, the discharge end of the proton exchange membrane fuel cell is connected with an air and waste gas pipe, a hydrogen gas circulating pipe, a condensate water discharge pipe and a heating waste gas pipe, and the proton exchange membrane fuel cell structurally comprises a pair of end plates, wherein a pluralityof monocells, which are arranged in a mutual series connection mode, and a plurality of heating units are arranged between the pair of end plates, and each heating unit is arranged between a pair of adjacent monocells. The system has the advantages that the system can be started in the condition of ultralow temperature, consumes less hydrogen gas during cold starting and is short in cold startingtime.

Description

technical field [0001] The invention relates to the technical field of proton exchange membrane fuel cells, in particular to proton exchange membrane fuel cells. Background technique [0002] Proton exchange membrane fuel cell is an electrochemical power generation device that uses hydrogen and oxygen as raw materials to electrochemically react to generate water and convert chemical energy into electrical energy at the same time. It has the characteristics of cleanness, high efficiency, energy saving and environmental protection, and high energy conversion rate. [0003] The current proton exchange membrane fuel cell operating system includes: a proton exchange membrane fuel cell. The two ends of the proton exchange membrane fuel cell are the feed end and the discharge end respectively. The power generation hydrogen input pipe of the solenoid valve, the power generation air input pipe with the power generation air solenoid valve, the power generation hydrogen input pipe is c...

AI Technical Summary

Problems solved by technology

[0004] Because the water produced by the chemical reaction will remain inside the proton exchange membrane fuel cell, in the low temperature environment below the freezing point, the liquid water inside the proton exchange membrane fuel cell will freeze, and the reaction heat generated when the proton exchange membrane fuel cell starts is not enough Melt ice, which affects the start-up of the proton exchange membrane fuel cell operating system. In the harsh low temperature environment, the proton exchange membrane fuel cell operating system may have problems such as slow start, difficult start or start-up failure.

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