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Fault diagnosis method and device for air supply system in fuel cell system

A fuel cell system and air supply technology, applied in fuel cells, electrical components, circuits, etc., can solve problems such as unsatisfactory fault diagnosis results

Active Publication Date: 2019-12-20
SHANGHAI ELECTRICGROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a fault diagnosis method and device for an air supply system in a fuel cell system in order to overcome the defects in the prior art that the fuel cell fault diagnosis effect is not ideal

Method used

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  • Fault diagnosis method and device for air supply system in fuel cell system
  • Fault diagnosis method and device for air supply system in fuel cell system
  • Fault diagnosis method and device for air supply system in fuel cell system

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Effect test

Embodiment 1

[0124] Such as figure 1 As shown, the fault diagnosis method of the air supply system in the fuel cell system of this embodiment includes:

[0125] S101. Obtain the corresponding historical air data in the air supply system when the fuel cell system works at different historical powers;

[0126] S102. Obtain the target power of the fuel cell system;

[0127] S103. Obtain target air data corresponding to the target power according to the historical power and historical air data;

[0128] Specifically, the linear interpolation method is used to calculate the target air data corresponding to the target power according to the historical power and historical air data. Specifically, each historical power can be fitted with the corresponding historical air data to obtain a data table, and then according to the data table. The linear interpolation calculation obtains the target air data corresponding to the target power.

[0129] Wherein, performing linear interpolation calculation...

Embodiment 2

[0139] The fault diagnosis method of the air supply system in the fuel cell system in this embodiment is a further improvement on Embodiment 1, specifically:

[0140] The air supply system of this embodiment includes a flow sensor, which is arranged on the inlet air pipeline of the fuel cell stack of the fuel cell system, and is used to obtain the air flow in the inlet air pipeline.

[0141] Step S104 includes:

[0142] Obtain the actual air flow in the inlet air line collected by the flow sensor;

[0143] Step S105 includes:

[0144] Obtaining a first difference between the target air flow and the actual air flow, and determining that the air supply system is faulty when the first difference exceeds a first set threshold;

[0145] The air supply system also includes a pressure sensor, which is arranged on the inlet air pipeline;

[0146] Step S104 includes:

[0147] Obtain the actual air pressure in the inlet air pipeline collected by the pressure sensor;

[0148] Step S...

Embodiment 3

[0208] Such as figure 2As shown, the fault diagnosis device of the air supply system of the fuel cell in this embodiment includes a historical data acquisition module 1, a target power acquisition module 2, a target data acquisition module 3, an actual data acquisition module 4, a calculation module 5, and an operating state acquisition module 6 and the fault type determination module 7 .

[0209] The historical data acquisition module 1 is used to acquire the corresponding historical air data in the air supply system when the fuel cell system works under different historical powers;

[0210] The target power acquisition module 2 is used to acquire the target power of the fuel cell system;

[0211] The target data acquisition module 3 is used to obtain the target air data corresponding to the target power according to the historical power and historical air data. Specifically, each historical power can be fitted with the corresponding historical air data to obtain a data tab...

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Abstract

The invention discloses a fault diagnosis method and device for an air supply system in a fuel cell system. The fault diagnosis method comprises the following steps: obtaining historical air data; obtaining the target power of the fuel cell system; obtaining the target air data; obtaining the actual air data in the air supply system; obtaining the difference value between the target air data and the actual air data and determining that the air supply system fails when the difference value exceeds a set threshold; and obtaining the operation state data of the target equipment in the air supplysystem so as to determine the corresponding fault type of the air supply system. Each component of the air supply system having a fault can be judged in time, the performance of the fuel cell system is prevented from being affected by the performance attenuation, damage and the like of the component and the occurrence of serious damage to the fuel cell system is effectively avoided; meanwhile, thefault diagnosis types of the air supply system are comprehensively detected, thus improving the accuracy and the fficiency of the fault diagnosis of the air supply system.

Description

technical field [0001] The invention relates to the technical field of battery management, in particular to a fault diagnosis method and device for an air supply system in a fuel cell system. Background technique [0002] With the widespread use of fuel cell systems, their safety and reliability have also been raised higher. The fuel cell system generates electricity through the electrochemical reaction of hydrogen and oxygen. The air flow and air pressure of the air supply system in the fuel cell stack have a direct impact on the performance of the fuel cell system. The air supply system has many parts and control parameters, so the fault diagnosis of the air supply system is also very important for the operation of the fuel cell system. [0003] In the prior art, the fault diagnosis of the fuel cell is mainly carried out through the following two methods: 1) through the method of extracting and preprocessing the original data to form a fault diagnosis classifier, so as to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04664H01M8/0438
CPCH01M8/04686H01M8/04395Y02E60/50
Inventor 吴炎花林业发王志斌徐吉林陈建平
Owner SHANGHAI ELECTRICGROUP CORP
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