A hydrogen fuel cell low temperature quick start system

Abstract

The invention provides a low-temperature quick start system for a hydrogen fuel cell, comprising: a fuel cell system; and a vortex heating device, wherein the eddy current heating device is installed on the air conveying pipeline and the hydrogen conveying pipeline in the fuel cell system, and the eddy current heating device comprises: The aluminum tube is a hollow cylindrical shape; the heating tube is a hollow cylindrical shape, and is sleeved on the radial outer side of the aluminum tube, and is closely fitted with the aluminum tube; the heat insulation tube is a hollow cylindrical shape, and is sleeved on the diameter of the heating tube. To the outside, an annular cavity is formed between the inner wall of the heat insulation tube and the outer wall of the heating tube; and the electromagnetic coil is wound on the outer wall of the heat insulation tube; wherein, the aluminum tube is communicated with the hydrogen conveying pipeline, and the annular cavity is conveyed with the air. The pipeline is connected. The invention adopts the eddy current heating method to avoid direct contact between the hydrogen and the AC coil, realizes non-contact heating, has the advantage of heat conduction from the inside to the outside, can realize the low temperature and rapid start of the fuel cell, and has high efficiency, energy saving and higher system safety. .

Description

technical field [0001] The invention relates to vehicle-mounted fuel cell technology, in particular to a hydrogen fuel cell low-temperature quick start system. Background technique [0002] A hydrogen fuel cell is a power generation device that directly undergoes an electrochemical reaction inside the battery to convert fuel chemical energy into electrical energy. Its power generation system is mainly composed of electric stack, hydrogen supply system, air supply system, water and heat management system and control system. The main product of the hydrogen fuel cell reaction is water. When the system stops running, some water will adhere to the membrane electrode and the hydrogen circulation pump. When the temperature is lower than the freezing point of water, the rotor of the membrane electrode and the hydrogen circulation pump will appear. The phenomenon of icing, starting the fuel cell system again, will cause the reaction of the membrane electrode of the stack to be slow...

AI Technical Summary

Problems solved by technology

The main product of the hydrogen fuel cell reaction is water. When the system stops running, some water will adhere to the membrane electrode and the hydrogen circulation pump. When the temperature is lower than the freezing point of water, the rotor of the membrane electrode and the hydrogen circulation pump will appear. If the phenomenon of icing occurs, starting the fuel cell system again will cause the membrane electrode of the stack to react slowly, or even fail to start due to the stuck rotor of the hydrogen circulation pump, which will cause irreversible damage to the entire fuel cell system

[0003] The prior art discloses the method of installing heaters at the inlet sections of cathode gas, anode gas and cooling liquid of the stack to heat the cathode gas, anode gas and cooling liquid separately or at the same time, so as to realize the heating and starting of the fuel cell. However, due to the installation Three heaters are installed, which makes the structure of the equipment complex and cannot solve the problem of freezing of the rotor of the hydrogen circulation pump

The prior art also discloses the method of blowing the humidifier with hot air to melt the ice layer inside the stack and start the fuel cell at low temperature. long, can not achieve low-temperature rapid start-up of the fuel cell

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