Fuel cell fast heating system and method adopting cold starting

Abstract

The invention discloses a fuel cell fast heating system adopting cold starting. The fuel cell fast heating system comprises a hydrogen conveying pipeline and a fuel cell stack, wherein the hydrogen conveying pipeline is used for conveying hydrogen to a channel on the anode side of the fuel cell stack. The fuel cell fast heating system is characterized by further comprising a heater, a thermometer and a cell control system, wherein the heater is arranged on the hydrogen conveying pipeline and used for heating hydrogen; the thermometer is arranged in the fuel cell stack and used for measuring the temperature of the fuel cell stack; the data acquisition end of the cell control system is connected to the thermometer, and the output end of the cell control system is connected to the heater; the cell control system controls the on / off of the heater according to the internal temperature, measured by the thermometer, of the fuel cell stack. According to the fuel cell fast heating system, the heater is arranged on the hydrogen conveying pipeline to be used for heating hydrogen fed to the fuel cell stack, so as to ensure a reaction in the anode side of the fuel cell stack goes fast at a proper temperature; superfluous heat can be transferred to the cathode side of the fuel cell stack; thus, the fuel cell stack can quickly go into the best working state.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell cold start rapid heating system and method. Background technique [0002] As a high-efficiency and environment-friendly power generation device, fuel cells have broad application prospects in base station power supplies, small and medium-sized power stations, electric vehicles, backup power supplies, and portable power supplies. Fuel cells can be divided into proton exchange membrane fuel cells, direct methanol fuel cells, alkaline fuel cells, solid oxide fuel cells, molten salt fuel cells, microbial fuel cells, biofuel cells, etc. Fuel cells are mainly composed of end plates, collector plates, bipolar plates, membrane electrodes, etc. [0003] In order to make the fuel cell work better in various environments, the fuel cell system is mainly composed of a fuel cell, a control system, a power conversion system, a starting power supply and other auxiliary systems. ...

AI Technical Summary

Problems solved by technology

Due to the large air flow, the air exhaust will take away most of the heat, resulting in large energy consumption and low heating efficiency, which is unfavorable to the energy output of the entire fuel cell system and reduces the efficiency of the fuel cell system

[0008] 2. To heat the entire stack, an artificial environment is required to ensure the temperature of the stack, and there are also problems of excessive device size and energy consumption

[0009] 3. Heating the pole plate, the structure of the stack is complex, which affects the electrical output performance of the pole plate, and has high requirements for the processing of the pole plate

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