Device and method for quickly increasing air inlet temperature of anode and cathode of fuel cell

Abstract

The invention discloses a device and a method for quickly increasing the inlet air temperature of a cathode and an anode of a fuel cell. The device comprises an air inlet and outlet system and a hydrogen inlet and outlet system, and the air inlet and outlet system employs a multi-way valve and temperature, pressure and humidity sensors of all branches for detection and precise control, self-pressurization acting of an air compressor is used for enabling air with the proper temperature after pressurization to enter a galvanic pile through multiple paths of bypasses, the cathode air inlet temperature is increased, external auxiliary equipment redundancy is avoided, excessive cost investment is avoided, and vehicle-mounted operation is facilitated. A hydrogen inlet and outlet system adopts acooling loop to realize temperature rise treatment of anode hydrogen by a heat exchange system through hydrothermal circulation. Meanwhile, the temperature of cathode air is increased, ice crystals ofa diffusion layer are melted most directly, the requirement of electrochemical reaction is met, heat conduction is truly achieved, the problems encountered in low-temperature starting of a core component galvanic pile of a fuel cell engine can be solved most simply and completely, and the low-temperature starting time is shortened. A low-temperature mode can still be adopted at a conventional 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 method for rapidly increasing the intake air temperature of a fuel cell cathode and anode. 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 transporta...

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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