Gifford, Krass, Sprinkle, Anderson & Citkowski, P.C.
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초록▼
Disclosed is a fuel cell simulator for predicting the power generation performance of a fuel cell including a membrane-electrode assembly having an electrolyte membrane, a catalyst layer, and a diffusion layer. The fuel cell simulator includes a model creation unit for modeling a catalyst layer from
Disclosed is a fuel cell simulator for predicting the power generation performance of a fuel cell including a membrane-electrode assembly having an electrolyte membrane, a catalyst layer, and a diffusion layer. The fuel cell simulator includes a model creation unit for modeling a catalyst layer from the geometry and property data of the catalyst layer, and a calculation unit for calculating the power generation state distribution of the catalyst layer or macro physical property values by using the catalyst layer model and establishing simultaneous equations of gas transportation, water production-transportation phase change, electrical conduction, heat conduction, and catalytic reaction.
대표청구항▼
1. A fuel cell simulator for predicting power generation performance of a fuel cell including a membrane-electrode assembly having an electrolyte membrane, a catalyst layer, and a diffusion layer, the fuel cell simulator comprising: a CPU having a model creation unit for modeling the catalyst layer
1. A fuel cell simulator for predicting power generation performance of a fuel cell including a membrane-electrode assembly having an electrolyte membrane, a catalyst layer, and a diffusion layer, the fuel cell simulator comprising: a CPU having a model creation unit for modeling the catalyst layer from geometry and property data of the catalyst layer, the geometry data being in the form of at least one of a particle size of a catalyst metal forming the catalyst layer, a particle size of a carbon forming the catalyst layer and an ionomer ratio; andthe CPU also having a calculation unit for calculating at least one of power generation state distribution and macro physical property values of the catalyst layer by using a catalyst layer model and establishing simultaneous equations of gas transportation, water production transportation phase change, electric conduction, heat conduction, and catalytic reaction,whereinin the model creation unit, the geometry data is actual image data or numeric data of the catalyst layer, and the property data is actual physical property data of the catalyst layer,the model creation unit models the electrolyte membrane and the diffusion layer from geometry and property data of the electrolyte membrane and the diffusion layer; andthe calculation unit calculates at least one of power generation state distribution and macro physical property values of the electrolyte membrane and the diffusion layer by using an electrolyte membrane model and a diffusion layer model and establishing simultaneous equations of gas transportation, water production transportation phase change, electric conduction, heat conduction and catalytic reaction. 2. The fuel cell simulator according to claim 1, wherein the model creation unit performs modeling from a material composition ratio and material physical properties of the catalyst layer, the electrolyte membrane, and the diffusion layer, in addition to the geometry and the property data thereof. 3. The fuel cell simulator according to claim 2, wherein a molecule model by means of quantum molecular dynamics calculation is used in place of the material physical property data. 4. The fuel cell simulator according to claim 1, wherein a micro two-phase flow model is used for the equations of gas transportation and water production transportation phase change. 5. The fuel cell simulator according to claim 1, wherein the calculation unit introduces a time parameter in each of the equations to calculate dynamic properties of the power generation state distribution of the catalyst layer, the electrolyte membrane, and the diffusion layer. 6. The fuel simulator according to claim 1, comprising: a repetition unit which causes the model creation unit to repeat modeling and causes the calculation unit to repeat calculation by varying the geometry and the property data such that a difference between a calculation result by the calculation unit and a target value is a predetermined value or less. 7. The fuel cell simulator according to claim 1, wherein in the power generation state distribution of the catalyst layer, the calculation unit obtains distribution of water and gas in the catalyst layer from the equations of gas transportation and water production transportation phase change, obtains distribution of temperature in the catalyst layer from the equation of heat conduction, and obtains distribution of current in the catalyst layer from the equations of electric conduction and catalytic reaction. 8. A method for manufacturing a fuel cell including a membrane-electrode assembly having an electrolyte membrane, a pair of catalyst layers sandwiching the electrolyte membrane, and a pair of diffusion layers sandwiching both outer surface of the pair of catalyst layers, the method comprising: providing a fuel cell simulator having a CPU with a model creation unit for modeling the catalyst layer from geometry and physical property data of the catalyst layer, the geometry data being in the form of at least one of a particle size of a catalyst metal forming the catalyst layer, a particle size of a carbon forming the catalyst layer and an ionomer ratio; andthe CPU also having a calculation unit for calculating at least one of power generation state distribution and macro physical property values of the catalyst layer by using a catalyst layer model and establishing simultaneous equations of gas transportation, water production transportation phase change, electric conduction, heat conduction, and catalytic reaction,calculating a power generation state distribution of the catalyst layer using the fuel cell simulator;whereinthe model creation unit models the electrolyte membrane and the diffusion layer from geometry and property data of the electrolyte membrane and the diffusion layer, andthe calculation unit calculates at least one of power generation state distribution and macro physical property values of the electrolyte membrane and the diffusion layer by using an electrolyte membrane model and a diffusion layer model and establishing simultaneous equations of gas transportation, water production transportation phase change, electric conduction, heat conduction and catalytic reaction,determining geometry and physical property data of the catalyst layer based on the power generation state distribution; andmanufacturing the fuel cell having the determined geometry physical property data. 9. A fuel cell simulator for predicting power generation performance of a fuel cell including a membrane-electrode assembly having an electrolyte membrane, a catalyst layer, and a diffusion layer, the fuel cell simulator comprising: a CPU having a model creation unit for modeling the catalyst layer from geometry and property data of the catalyst layer, the geometry data being in the form of at least one of a particle size of a catalyst metal forming the catalyst layer, a particle size of a carbon forming the catalyst layer and an ionomer ratio;the CPU also having a calculation unit for calculating at least one of power generation state distribution and macro physical property values of the catalyst layer by using a catalyst layer model and establishing simultaneous equations of gas transportation, water production transportation phase change, electric conduction, heat conduction, and catalytic reaction; andthe CPU also having a repetition unit for causing the model creation unit to repeat modeling and causing the calculation unit to repeat calculation by varying the geometry and the property data such that a difference between a calculation result by the calculation unit and a target value is a predetermined value or less.
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이 특허에 인용된 특허 (3)
Baker,Marek, Method and system for verification, calibration and simulation of a fuel cell test station.
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