A kind of SOFC temperature control method, temperature control system and vehicle

Abstract

The invention relates to an SOFC temperature control method. The SOFC comprises a heat preservation state and a usage state, one part of reaction units forming an electric pile of the SOFC are heat preservation units while the other part is energy generation units; when in the heat preservation state, the heat preservation units work continuously, and the energy generation units stop working; andwhen in the usage state, both he heat preservation units and the energy generation units work. According to the SOFC temperature control method disclosed by the invention, the condition that the SOFCis always at relatively high temperature can be effectively ensured, the next start time of the SOFC can be greatly shortened, and the advantages are built for the application and popularization of the SOFC. The invention synchronously discloses an SOFC temperature control system and a vehicle.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a SOFC temperature control method, a temperature control system and a vehicle. Background technique [0002] SOFC (Solid Oxide Fuel Cell Solid Oxide Fuel Cell) is a new type of power generation device, which has the advantages of high power generation efficiency, no pollution, all-solid structure and adaptability to a variety of fuel gases. [0003] At present, some vehicles try to use SOFC as a source of electric energy. However, SOFC is a high-temperature fuel cell, and the reaction temperature of the battery is as high as 600-1000°C. Due to the limited energy of a single battery, it is often necessary to connect multiple battery cells in series or in parallel to form a stack. The stack is the core device of the entire SOFC power generation system, providing a reaction site for the redox reaction, so that the fuel chemical can be directly converted into electricity. [000...

AI Technical Summary

Problems solved by technology

[0005] Due to the temperature requirements of SOFC, SOFC needs to inject fuel into the exhaust burner at cold start, and the fuel burns in the exhaust burner to release heat, and the released heat is sent to the air heater and fuel reformer. The air is heated in the air heater and enters the cathode of each reaction unit, and the fuel is heated and reformed into H in the fuel reformer 2 and CO, etc., and then enter the anode of the reaction unit, and the heated air and fuel heat the stack, thereby gradually increasing the temperature to the reaction temperature of SOFC. The whole process takes several hours, which seriously limits the promotion of SOFC. and application

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