Intelligent feeding system used for passive direct methanol fuel cell

Abstract

The invention discloses an intelligent feeding system used for a passive direct methanol fuel cell. The intelligent feeding system comprises a feeding unit, a singlechip control unit, a temperature control unit and an evaporation unit; the feeding unit is connected with a spraying nozzle of the evaporation unit through an infusion pipe; the evaporation unit is provided with a boiling strengthening plate which is heated by a heating rod of the evaporation unit; the singlechip control unit is connected with a pressure sensor of the evaporation unit and the feeding unit; the pressure sensor detects the internal pressure of the evaporation unit, and generated electrical signals are fed back to the singlechip control unit; the temperature control unit is connected with the heating rod of the evaporation unit and a thermocouple; the thermocouple detects the temperature of the evaporation unit, and generated electrical signals are fed back to the temperature control unit; the temperature control unit regulates the heating temperature of the heating rod according to the fed electrical signals. The intelligent feeding system can supply material for the passive direct methanol fuel cell according to actual requirements, flexibly controls the running time of the cell and improves the fast reaction capacity of the cell.

Description

Technical field [0001] The present invention relates to the technical field of fuel cells, in particular to an intelligent feeding system for passive direct methanol fuel cells. Background technique [0002] Direct Methanol Fuel Cell (DMFC) is a fuel cell that directly uses methanol aqueous solution as fuel and oxygen or air as oxidant. [0003] The half-cell reaction and total reaction of DMFC can be expressed as follows: [0004] Anode reaction is CH 3 OH+H 2 O→6H + +6e - +CO 2 [0005] Cathodic reaction is 3 / 2O 2 +6H + +6e - →3H 2 O [0006] The total reaction of the battery is CH 3 OH+3 / 2O 2 →2H 2 O+CO 2 [0007] Due to its high energy density, easy access to fuel, easy use, simple equipment, and environmental protection, DMFC is considered by the industry to be the first type of fuel cell with the most potential to achieve marketization. Although my country has achieved certain research results in the research and development of DMFC at this stage, it uses liquid methanol solution...

AI Technical Summary

Problems solved by technology

Although my country has achieved certain research results in the research and development of DMFC at this stage, they all use liquid methanol solution as raw material, which inevitably encounters the following problems: (1) serious methanol breakthrough; (2) low concentration of methanol , methanol reaching the anode is diluted; (3) low reaction temperature leads to low battery activity; (4) two-phase mass transfer is hindered at both poles of the battery

The above factors work together to greatly limit the performance of DMFC, making people have to continue to explore the use of steam supply to provide fuel for DMFC

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