Proton exchange membrane fuel cell system with low-temperature storage and starting functions

Abstract

The invention discloses a proton exchange membrane fuel cell system with low-temperature storage and starting functions. The system comprises a galvanic pile of a proton exchange membrane fuel cell. An air inlet and a hydrogen inlet of the galvanic pile are communicated through an air circulating pump and a first electric heating wire by a pipeline, and an air outlet and a hydrogen outlet of the galvanic pile are communicated through a drying agent by a pipeline to form the closed circulation of the air circulating pump, the first electric heating wire, the galvanic pile and the drying agent. A water inlet and a water outlet of the galvanic pile are communicated through a first water pump and a small water tank with a second electric heating wire by a pipeline to form the closed circulation of the small water tank, the first water pump and the galvanic pile. The water inlet and water outlet of the galvanic pile are also communicated through a second water pump and a large water tank with a third electric heating wire by a pipeline to form the closed circulation of the large water tank, the second water pump and the galvanic pile. The top end of the large water tank is connected with the pipeline for controllably communicating with the atmosphere. The system can simultaneously realize the low-temperature storage and rapid low-temperature starting of the galvanic pile of the proton exchange membrane fuel cell, and equipment is simple and easy to operate.

Description

technical field [0001] The invention belongs to the field of proton exchange membrane fuel cells, and specifically refers to a proton exchange membrane fuel cell system capable of low temperature preservation and low temperature start. Background technique [0002] Fuel cell is an electrochemical power generation device. Due to its outstanding advantages such as high energy conversion efficiency (50% to 70%), environmental friendliness, and low noise, the research and development of fuel cell technology has been favored by governments and large companies in various countries. It is considered to be the preferred clean and efficient power generation technology in the 21st century. Among various types of fuel cells, proton exchange membrane fuel cells (PEMFC) are well suited for portable power sources and vehicles. Fuel cells developed by most automotive companies also focus on PEMFCs. [0003] In addition to the advantages of other ordinary fuel cells, proton exchange membr...

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Problems solved by technology

This method is easy to implement, but the startup speed is slower

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