Contactless cold starting device of proton exchange membrane fuel cell

Abstract

The invention discloses a contactless cold starting device of a proton exchange membrane fuel cell. The contactless cold starting device comprises a direct-current power supply, a microwave generator, a microwave output device and a microwave heater, which are connected in sequence, wherein the microwave heater is used for carrying out contactless microwave heating on the proton exchange membrane fuel cell locate at the outer part of the microwave heater. For not influencing a structure of the cell and a normal working state of the cell, a microwave heating principle is utilized and the fuel cell in a cold starting process is heated, so that on one hand, the structure of the cell does not need to be changed and the working performance of the cell is not influenced; on the other hand, the starting problem of the fuel cell under a lower temperature is solved better and a commercialization progress of the proton exchange membrane fuel cell is accelerated. Meanwhile, the single-ridge type microwave heater has an effective heating speed on a thin-sheet-shaped or linear object; moreover, the vehicle-mounted direct-current power supply can meet the power supply requirements of the microwave heater; the microwave heater has a small size and high microwave heating efficiency, and a whole cold starting system occupies a small space.

Description

technical field [0001] The invention relates to a starting device for a battery, in particular to a non-contact cold starting device for a proton exchange membrane fuel cell. Background technique [0002] The contradiction between the increasing demand for energy consumption and the increasingly depleted fossil energy has become more prominent in recent years. As a clean energy conversion device, a fuel cell directly converts chemical energy into electrical energy, and thus has a high energy conversion efficiency. Among many fuel cells, proton exchange membrane fuel cells have the advantages of high energy density, low operating temperature, and no pollutant emissions, and have become a research hotspot all over the world. However, the cold start capability of proton exchange membrane fuel cells is one of the main bottleneck technologies in its commercialization process. At present, the solutions to the cold start problem of proton exchange membrane fuel cells mainly inclu...

AI Technical Summary

Problems solved by technology

For the third method, studies have shown that the cold start method using electrochemical reaction heat can only be successfully started at a higher temperature (about -5-0°C), which cannot meet the requirements in the practical application of fuel cells.

Therefore, the technology to improve the cold start capability of PEMFC has yet to be developed.

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