A device and method for increasing the inlet temperature of the cathode and anode of a fuel cell

Abstract

The invention discloses a device and method for increasing the temperature of the anode and cathode of a fuel cell, including an air intake and exhaust system and a hydrogen intake and exhaust system. Detection and precise control, by using the self-boosting power of the air compressor, the boosted air with a suitable temperature enters the stack through multiple bypasses, increasing the cathode intake temperature, without redundant external auxiliary equipment, and without excessive cost investment , which is convenient for vehicle operation. The hydrogen inlet and exhaust system uses a cooling circuit to realize the heat exchange system through the water heat cycle to raise the temperature of the anode hydrogen. At the same time, the temperature of the cathode air is raised, which directly melts the ice crystals in the diffusion layer, meets the requirements of the electrochemical reaction, and realizes non-reliable heat conduction in a true sense, which can completely solve the problem of low-temperature start-up of the core component of the fuel cell engine, the stack. To solve the problem, shorten the low temperature start-up time. And the low temperature mode can still be used at normal temperature.

Description

technical field [0001] The invention relates to the technical field of low-temperature start-up of a new energy hydrogen fuel cell engine, in particular to a device and a method for increasing the intake air temperature of a cathode and anode of a fuel cell. Background technique [0002] A fuel cell is an energy conversion device that completes the chemical reaction discharge through the hydrogen and oxygen inside it under the action of catalysis, and then realizes energy conversion. Its advantage is that the only product after the reaction is water, so it is called "the ultimate energy source in the 21st century". Because it is regarded as the main energy source to replace fossil energy, it is currently mainly used in the field of new energy vehicles, which we call hydrogen fuel cell engines. At present, hydrogen fuel cell engine technology is gradually mature, and its stability is developing for the better. It has received high attention in the field of public transportat...

AI Technical Summary

Problems solved by technology

However, there are technical difficulties in the collection and storage of waste heat, and the storage capacity is also severely limited, so it is impossible to realize full recovery and full utilization of energy in the true sense.

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