阅读说明：本技术 一种ht-pem甲醇水燃料电池的甲醇水浓度及电堆活性计算方法 (Method for calculating methanol water concentration and electric pile activity of HT-PEM methanol water fuel cell ) 是由 荆涛 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种HT-PEM甲醇水燃料电池的甲醇水浓度及电堆活性计算方法,涉及燃料电池技术领域,方法包括：设定料燃料电池系统运作状态下的参考甲醇水浓度阈值和电堆活性阈值；获取燃料电池系统运作状态下的相关参数数据；根据所述相关参数数据依次计算甲醇水浓度值和电堆活性值；根据所述甲醇水浓度值和电堆活性值得出分析结果,并对燃料电池系统做出总体评价。本发明能够直接测量得到甲醇水溶液实时浓度和燃料电池电堆的实时活性,从而为评估燃料电池的工作状态提供了可以量化的指标,并可通过将该指标稳定控制在一定范围内,来提升甲醇水燃料电池的工作效率。(The invention discloses a method for calculating methanol water concentration and electric pile activity of an HT-PEM methanol water fuel cell, which relates to the technical field of fuel cells and comprises the following steps: setting a reference methanol water concentration threshold value and a galvanic pile activity threshold value under the operation state of the fuel cell system; acquiring relevant parameter data of a fuel cell system in an operating state; sequentially calculating a methanol water concentration value and an electric pile activity value according to the relevant parameter data; and obtaining an analysis result according to the methanol water concentration value and the cell stack activity value, and performing overall evaluation on the fuel cell system. The invention can directly measure and obtain the real-time concentration of the methanol water solution and the real-time activity of the fuel cell stack, thereby providing quantifiable indexes for evaluating the working state of the fuel cell and improving the working efficiency of the methanol water fuel cell by stably controlling the indexes within a certain range.)

1. A method for calculating methanol water concentration and electric pile activity of an HT-PEM methanol-water fuel cell comprises the following steps:

s1, setting a reference methanol-water concentration threshold value and a galvanic pile activity threshold value under the operation state of the fuel cell system;

s2, acquiring relevant parameter data of the fuel cell system in the operating state;

s3, sequentially calculating a methanol water concentration value and a galvanic pile activity value according to the relevant parameter data;

and S4, obtaining an analysis result according to the methanol water concentration value and the cell stack activity value, and performing overall evaluation on the fuel cell system.

2. The method of claim 1, wherein the related parameter data comprises combustor temperature Tb, feed pump rotation speed Vp, system operation time t, reformer feed pump feed volume Vr, reformer temperature Tr, stack temperature Tf and stack output power Pf.

3. The method of claim 2, wherein said method of calculating methanol-water concentration and stack activity of an HT-PEM methanol-water fuel cell,

the method for calculating the concentration value of the methanol water comprises the following steps:

Tc1＝∫Vp×t×k1，

wherein Tc1 is the equivalent temperature reference value of the combustion chamber in unit time, Vc is the methanol water concentration value, K1 is the temperature conversion coefficient, and K2 is the concentration conversion coefficient.

4. The method of claim 2, wherein said method of calculating methanol-water concentration and stack activity of an HT-PEM methanol-water fuel cell,

the method for calculating the stack activity value comprises the following steps:

Tc2＝∫Vr×t×k3；

wherein Tc2 is the equivalent temperature reference value of the reforming chamber per unit time, phi is the stack activity value, and k3 is the temperature conversion coefficient.

Technical Field

The invention relates to the technical field of fuel cells, in particular to a methanol-water concentration and galvanic pile activity calculation method of an HT-PEM methanol-water fuel cell.

Background

Methanol fuel cells, which are one type of Proton Exchange Membrane Fuel Cells (PEMFCs), directly use methanol aqueous solution or steam methanol as a fuel supply source without hydrogen production through reforming of methanol, gasoline, and natural gas for power generation. Compared with Proton Exchange Membrane Fuel Cells (PEMFCs), Direct Methanol Fuel Cells (DMFCs) have the characteristics of low-temperature quick start, clean and environment-friendly fuel, simple cell structure and the like. This makes Direct Methanol Fuel Cells (DMFCs) likely to become the mainstream of future portable electronic product applications.

Disclosure of Invention

In order to overcome the problems in the prior art, the invention provides a method for calculating the concentration of methanol water and the activity of a galvanic pile of an HT-PEM methanol-water fuel cell, and a method for adjusting the working parameters of a methanol-water fuel cell system in time, thereby improving the working efficiency of the methanol-water fuel cell.

The technical scheme of the invention is as follows:

a method for calculating methanol-water concentration and electric pile activity of an HT-PEM methanol-water fuel cell comprises the following steps:

s1, setting a reference methanol-water concentration threshold value and a galvanic pile activity threshold value under the operation state of the fuel cell system;

s2, acquiring relevant parameter data of the fuel cell system in the operating state;

s3, sequentially calculating a methanol water concentration value and a galvanic pile activity value according to the relevant parameter data;

and S4, obtaining an analysis result according to the methanol water concentration value and the cell stack activity value, and performing overall evaluation on the fuel cell system.

Preferably, the relevant parameter data comprises combustion chamber temperature Tb, liquid inlet pump rotating speed Vp, system running time t, reforming chamber liquid inlet pump liquid inlet flow Vr, reforming chamber temperature Tr, electric pile temperature Tf and electric pile output power Pf.

Preferably, the method for calculating the methanol water concentration value is as follows:

Tc1＝∫Vp×t×k1，

wherein Tc1 is the equivalent temperature reference value of the combustion chamber in unit time, Vc is the methanol water concentration value, K1 is the temperature conversion coefficient, and K2 is the concentration conversion coefficient.

Preferably, the calculation method of the stack activity value is as follows:

Tc2＝∫Vr×t×k3；

wherein Tc2 is the equivalent temperature reference value of the reforming chamber per unit time, phi is the stack activity value, and k3 is the temperature conversion coefficient.

Compared with the prior art, the invention has the beneficial effects that: the invention can directly measure and obtain the real-time concentration of the methanol water solution and the real-time activity of the fuel cell stack, thereby providing quantifiable indexes for evaluating the working state of the fuel cell and improving the working efficiency of the methanol water fuel cell by stably controlling the indexes within a certain range.

Drawings

FIG. 1 is a flow chart of a computing method of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention are clearly and completely described below with reference to the drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

As shown in fig. 1, the present invention provides a method for calculating methanol-water concentration and stack activity of an HT-PEM methanol-water fuel cell, the method comprises the following steps:

s1, setting a reference methanol-water concentration threshold value and a galvanic pile activity threshold value under the operation state of the fuel cell system;

s2, acquiring relevant parameter data of the fuel cell system in the operating state;

and the related parameter data comprises combustion chamber temperature Tb, liquid inlet pump rotating speed Vp, system running time t, reforming chamber liquid inlet pump liquid inlet flow Vr, reforming chamber temperature Tr, galvanic pile temperature Tf and galvanic pile output power Pf.

S3, sequentially calculating a methanol water concentration value and a galvanic pile activity value according to the relevant parameter data;

specifically, the calculation method of the methanol water concentration value comprises the following steps:

Tc1＝∫Vp×t×k1，

wherein Tc1 is the equivalent temperature reference value of the combustion chamber in unit time, Vc is the methanol water concentration value, K1 is the temperature conversion coefficient, and K2 is the concentration conversion coefficient.

The method for calculating the stack activity value comprises the following steps:

Tc2＝∫Vr×t×k3；

wherein Tc2 is the equivalent temperature reference value of the reforming chamber per unit time, phi is the stack activity value, k3 is the temperature conversion coefficient, and the values of k3 and k1 are different.

And S4, obtaining an analysis result according to the methanol water concentration value and the cell stack activity value, and performing overall evaluation on the fuel cell system.

The method for calculating the methanol water concentration and the electric pile activity of the HT-PEM methanol-water fuel cell can directly measure and obtain the real-time concentration of the methanol water solution and the real-time activity of the electric pile of the fuel cell, thereby providing quantifiable indexes for evaluating the working state of the fuel cell and improving the working efficiency of the methanol-water fuel cell by stably controlling the indexes within a certain range.

The above disclosure is only for the preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.