Fuel feeding device of high temperature liquid fuel cell or cell stack

Abstract

The invention relates to a fuel feeding subsystem of a high temperature liquid fuel cell system. The high temperature liquid fuel cell system comprises a fuel tank, a fuel feeding subsystem, a fuel reformer consisting of a fuel combustion chamber and a fuel reforming chamber, a gas feeding subsystem consisting of a gas pump and a gas pipe, and a fuel cell stack. The fuel feeding subsystem comprises a liquid pump and a flow control part which are located between a material outlet of the fuel tank and a material inlet of the fuel reformer, and are orderly connected through a liquid pipe; the fuel feeding subsystem also comprises a controller for controlling the start and stop of fuel feeding and the flow of the fuel feeding; the controller controls the start and stop of fuel feeding subsystem according to a temperature signal sent by a temperature sensor disposed inside the fuel reformer; the controller controls the flow of the liquid fuel flowing into the fuel reformer according to the temperature signal. The fuel feeding subsystem reduces the high requirements for liquid pump flow by the system, and more facilitates system integration.

Description

technical field [0001] The present invention relates to a high-temperature liquid fuel cell system; specifically, the present invention relates to a fuel feed subsystem of the high-temperature liquid fuel cell system; the present invention also relates to a fuel feed method of the above-mentioned high-temperature liquid fuel cell system. Background technique [0002] Proton exchange membrane fuel cell has become a new type of clean power generation method due to its high efficiency and non-polluting characteristics. Conventional proton exchange membrane fuel cells use pure hydrogen as fuel, which limits its application range. The development of proton exchange membrane fuel cells using reformed gas as fuel gas (commonly known as high-temperature reforming fuel cells) is of great importance for the commercialization of fuel cells. meaning. [0003] In the high temperature reforming fuel cell system, the reformed gas supply device processes the fuel source to generate hydroge...

AI Technical Summary

Problems solved by technology

On the one hand, this method increases the internal consumption of the system (two pumps work at the same time); on the other hand, it also occupies a certain amount of system space; at the same time, due to the limitation of the selection of the micro-flow pump, the liquid fuel passing through the reformer is excessive, resulting in reforming The gas cannot be fully utilized by the fuel cell system, and then returns to the reformer, which increases the complexity of the fuel cell system and increases the cost of the system

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