Molten carbonate fuel cell life prediction method

A molten carbonate and fuel cell technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of unrelated discussions and works on MCFC life prediction methods

Inactive Publication Date: 2019-04-30
HUANENG CLEAN ENERGY RES INST
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the units engaged in MCFC research mainly include Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China Huaneng Group Clean Energy Technology Research Institute Co., Ltd., and some colleges and universities, but there are no relevant discussions and works on MCFC life prediction methods. Therefore, MCFC life Prediction is particularly critical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The specific process of life prediction for MCFC battery stack with rated power of 15kW is as follows:

[0029] 1) Assemble an MCFC battery stack with a rated power of 15kW. The battery stack is composed of 100 single cells in series, and the effective area of ​​the single cell is 0.2m 2 , the stack discharge current density is 100mA / cm 2 , the working voltage is 75V, the discharge current is 200A, and the average single-cell working voltage of the battery stack shall not be lower than 0.6V;

[0030] 2) Under stable working conditions, record the voltage-time, current-time and power-time data of the continuous operation of the battery stack for 1000 hours. The discharge voltage is 74.63V, the current is still 200A, and the power is 14.926kW. The calculated voltage and the attenuation rate of power is 0.49%;

[0031] 3) When the voltage of the battery stack is reduced to 60V, it can be calculated that the maximum acceptable attenuation rate of the voltage is 20%;

[0...

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PUM

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Abstract

The invention discloses a molten carbonate fuel cell life prediction method. The method comprises the following steps: 1) the average voltage-time data of cells under working current are calculated; 2) in a preset operation time, when the average voltage of the cells is no smaller than the minimum working voltage, the power attenuation rate mu of the molten carbonate fuel cell under the present discharge current is calculated; 3) according to the relationship between the power attenuation rate mu of the molten carbonate fuel cell under the present discharge current and the operation time, thelifetime of the molten carbonate fuel cell for continuous operation under operation in the current working condition is calculated; and 4) according to the lifetime of the molten carbonate fuel cell for continuous operation under operation in the current working condition, the whole life cycle of the molten carbonate fuel cell is estimated. The method can predict the life of the molten carbonate fuel cell.

Description

technical field [0001] The invention belongs to the technical field of molten carbonate fuel cells, and relates to a life prediction method for molten carbonate fuel cells. Background technique [0002] Molten carbonate fuel cell (MCFC) is a high-temperature fuel cell that works at 650°C. It does not require noble metals as catalysts, has a wide range of fuel sources, low noise, basically achieves near-zero emissions of pollutants, high power generation efficiency, and can realize thermoelectricity. Combined power supply and other advantages are suitable for hundreds of kilowatts to megawatts distributed power stations or fixed power stations, and have good development prospects. [0003] At present, MCFC is in the United States, Germany, Italy, Japan, South Korea and other countries as a demonstration operation of distributed power generation systems, and the application effect is relatively good. Judging from the operation status of MCFC in the United States, Germany, Ital...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/392G01R31/396
Inventor 张瑞云程健许世森王洪建卢成壮任永强杨冠军黄华
Owner HUANENG CLEAN ENERGY RES INST
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