CN-122000389-A - Method for monitoring hydrogen injector performance during operation of fuel cell system

CN122000389ACN 122000389 ACN122000389 ACN 122000389ACN-122000389-A

Abstract

The application relates to a method for monitoring the performance of a hydrogen injector during operation of a fuel cell system, comprising at least the steps of SS1 obtaining a first real-time detection of an operating parameter of the hydrogen injector and a second real-time detection of an output electrical characteristic of the fuel cell system, and SS2 diagnosing the current performance of the hydrogen injector based on both the first and second real-time detection obtained in step SS 1. A computer program product in which the method can be implemented and a related electronic control unit for a fuel cell system are also provided.

Inventors

YANG YANG
WU XINYI
LAN QIN
PENG DAN
WANG JUNYU
YUE LANG

Assignees

博世氢动力系统(重庆)有限公司

Dates

Publication Date: 20260508
Application Date: 20241105

Claims (10)

1. A method of monitoring hydrogen injector performance during operation of a fuel cell system, comprising at least the steps of: SS1, acquiring first real-time detection information for an operating parameter of the hydrogen injector and second real-time detection information for an output electrical characteristic of the fuel cell system, and SS2, diagnosing the current performance of the hydrogen injector based on both the first and second real-time detection information acquired in step SS 1.
2. The method of monitoring hydrogen injector performance during operation of a fuel cell system of claim 1, wherein the operating parameter of the hydrogen injector is an injector current that regulates a fuel flow output from the hydrogen injector and/or the output electrical characteristic of the fuel cell system is an output current or an output power of a stack of the fuel cell system.
3. The method of monitoring the performance of the hydrogen injector during operation of the fuel cell system according to claim 1 or 2, wherein the step SS2 includes the substep SS21 of diagnosing the current performance of the hydrogen injector as normal when the first real-time detection information falls within a performance safety range corresponding to the second real-time detection information, or diagnosing the current performance of the hydrogen injector as abnormal when the first real-time detection information falls within a performance degradation range corresponding to the second real-time detection information.
4. The method of monitoring hydrogen injector performance during operation of a fuel cell system as set forth in claim 3 wherein step SS2 further comprises a substep SS20 prior to substep SS21 of confirming whether said performance safety range or said performance degradation range is suitable for diagnosis of hydrogen injector performance at the current fuel cell system operating state.
5. The method of monitoring hydrogen injector performance during operation of a fuel cell system of claim 4, Wherein the method further comprises the step SS0 of acquiring third real-time detection information of hydrodynamic parameters for nodes and/or components upstream and downstream of the hydrogen injector along the fuel supply flow path, and Wherein sub-step SS20 includes determining that the performance safety range or the performance degradation range is not suitable for diagnosis when the third real-time detection information does not satisfy the suitable determination condition related to the performance safety range or the performance degradation range, and skipping sub-step SS21.
6. The method of monitoring hydrogen injector performance during operation of a fuel cell system of claim 5, wherein the third real-time detection information includes at least an inlet pressure of the hydrogen injector, a fuel cell system anode hydrogen circulation pump speed, a fuel cell system stack anode inlet pressure, and a hydrogen pressure output by the fuel storage system to the fuel cell system anode subsystem, and/or the applicable decision condition is related to the second real-time detection information.
7. The method of monitoring hydrogen injector performance during operation of a fuel cell system as recited in claim 5, wherein step SS0 includes an optional substep SS01 of determining whether a leak and/or failure has occurred in other portions of the fuel supply flow path than the hydrogen injector based on the third real-time detection information.
8. The method of monitoring hydrogen injector performance during operation of a fuel cell system according to claim 6 or 7, wherein the method further comprises step SS3 of reporting the diagnosis made in step SS2 and outputting first, second and third real-time detection information related to the diagnosis.
9. A computer program product comprising computer programs/instructions which, when executed by a processor, implement the steps of the method according to any of claims 1-8.
10. An electronic control unit for a fuel cell system comprising a memory and a processor, wherein a computer program product as claimed in claim 9 is stored on the memory and in response to an enablement of the fuel cell system is executed by the processor to implement the steps of the method of any one of claims 1-8, optionally the electronic control unit is a fuel cell control unit of a fuel cell system configured to manage and control operation of the fuel cell system.

Description

Method for monitoring hydrogen injector performance during operation of fuel cell system Technical Field The present application relates to the field of fuel cell system safety monitoring, and more particularly to a method for monitoring the performance of a hydrogen injector during operation of a fuel cell system, and to a related computer program product and electronic control unit. Background The fuel cell is a power generation technology which is widely applied day by day, and utilizes the electrochemical reaction of fuel and oxidant to directly convert chemical energy of the fuel into electric energy. System safety is an important aspect of fuel cell system use. In particular, leakage of fuel can cause danger and safety accidents in certain situations. Therefore, the operating conditions of the fuel cell anode sub-system in connection with the storage, transfer and handling of fuel need to be closely monitored to eliminate potential safety hazards and to meet safety regulations for use of the fuel cell system. In addition, to protect against system safety risks caused by unexpected component failure, the safety of the anode subsystem components also needs to be closely addressed and tracked. Although it is possible to check whether the system components are degraded and confirm whether the components are functioning properly when the fuel cell system is deactivated by means such as regular maintenance, servicing, etc., it is still possible that the components are unexpectedly disabled or performance unexpectedly drops when the fuel cell system is running and are difficult to be recognized in time, thereby resulting in a safety event. It is therefore desirable to provide a method of diagnosing component performance conditions and evaluating component operational safety while the fuel cell system is operating so as to be able to pre-warn of component failure or inefficiency and allow related measures to be taken to avoid the occurrence of potential safety hazards. Disclosure of Invention The present invention has been made in view of the above-identified need for improvement in the prior art. According to one aspect of the present application, there is provided a method of monitoring the performance of a hydrogen injector during operation of a fuel cell system, comprising at least the steps of SS1, obtaining first real-time detection information for an operating parameter of the hydrogen injector and second real-time detection information for an output electrical characteristic of the fuel cell system, and SS2, diagnosing the current performance of the hydrogen injector based on both the first and second real-time detection information obtained in step SS 1. According to another aspect of the present application there is provided a computer program product comprising a computer program/instruction, characterized in that the computer program/instruction, when executed by a processor, implements the steps of the method as described above. According to yet another aspect of the present application there is provided an electronic control unit for a fuel cell system comprising a memory and a processor, wherein a computer program product as described above is stored on the memory and in response to an enablement of the fuel cell system, the computer program product is executed by the processor to implement the steps of the method as described above, optionally the electronic control unit is a fuel cell control unit of the fuel cell system configured to manage and control operation of the fuel cell system. Drawings Embodiments in accordance with the principles of the present application are described in detail below with reference to the drawings. The accompanying drawings are given by way of illustration to facilitate an understanding of the specific embodiments described. However, the drawings are not intended to be limiting. Accordingly, any non-claimed features shown in the drawings should not be construed as essential to the practice of the principles of the application, nor should any of the features claimed and shown in the drawings be construed as the only way to achieve the functionality associated with the features. Fig. 1 is a flow chart illustrating an example of a method for monitoring fuel cell system hydrogen injector operational safety in accordance with principles to which the present disclosure relates. Fig. 2 is a block diagram schematically illustrating an example of a fuel cell anode subsystem that may employ the method as shown in fig. 1 to effect component operational safety monitoring. Fig. 3A-3D are two-dimensional graphical representations of a real vehicle test dataset of a fuel cell vehicle employing the fuel cell anode subsystem of fig. 2, wherein fig. 3A shows hydrogen injector current I HGI versus stack current I stack for different hydrogen injector inlet pressures (in data point grayscale), fig. 3B shows hydrogen injector current I HGI versus stack current I stack for different