Fuel cell system fault diagnosis method and device, apparatus and medium

Abstract

The invention discloses a fuel cell system fault diagnosis method and device, an apparatus and a medium. The method comprises the following steps of detecting whether a vehicle starting signal is received or not; when the vehicle starting signal is received, determining a target fuel cell subsystem from a plurality of fuel cell subsystems in a fuel cell system, and obtaining an awakening moment of the target fuel cell subsystem; and within the preset activation time after the wake-up moment of the target fuel cell subsystem, activating a target fault diagnosis mechanism of the target fuel cell subsystem, the target fault diagnosis mechanism being used for performing fault diagnosis on the target fuel cell subsystem. Within the preset activation time after the wake-up time of the target fuel cell subsystem, the target fault diagnosis mechanism of the target fuel cell subsystem is activated, so that the probability that the target fault diagnosis mechanism misreports a fault due to the fact that the target fuel cell subsystem is not started is greatly reduced, and under a better condition, the condition of false fault report of the fault diagnosis mechanism can even be avoided.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell system fault diagnosis method, device, equipment and medium. Background technique [0002] A fuel cell system refers to a power generation system with a fuel cell as the core and a fuel supply and circulation system, an oxidant supply system, a water / heat management system, and a control system. In order to monitor the operating status of the fuel cell system, a fault diagnosis mechanism for the fuel cell system is generally equipped. However, the fault diagnosis mechanism provided in the related art is fully activated after the fuel cell controller wakes up, and when the fault diagnosis mechanism is activated, the components to be diagnosed in the fuel cell system may still be in a state of waiting to wake up, which will cause the fuel cell system to start The probability of false alarm failure is high. Contents of the invention [0003] The embodiment of the ...

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Problems solved by technology

[0003] The embodiment of the present application provides a fuel cell system fault diagnosis method, device, equipment, and medium, which solves the technical problem in the prior art that the probability of falsely reporting faults is high when the fuel cell system is started, and realizes the reduction of fuel cell system startup. The technical effect on the probability of false alarm failure when

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