Fault diagnosis display method and system for all-in-one integrated controller of hydrogen fuel commercial vehicle

By designing a fault diagnosis and display method for all-in-one integrated controllers, the information comparison between high and low voltage plate modules and VCU controllers is used to solve the generality and low efficiency of fault diagnosis for hydrogen fuel commercial vehicles, and the accurate fault diagnosis and real-time display are achieved, which improves maintenance efficiency.

CN119758963AActive Publication Date: 2025-04-04QINGDAO MEIJIN NEW ENERGY VEHICLE MANUFACTURING CO LTD
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Patent Information

Application Number
CN202411919612.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-04-04
Estimated Expiration
2044-12-25

AI Technical Summary

Technical Problem

The all-in-one controller of hydrogen fuel commercial vehicles has general and low efficiency in fault diagnosis and display, which leads to inconvenient after-sales maintenance, long maintenance time, and large workload for troubleshooting points.

Method used

A fault diagnosis and display method for all-in-one integrated controller is designed. By comparing the current output of each module, contactor and load through high and low voltage plate modules, it combines the communication and interaction information of the VCU controller to realize fault diagnosis and display.

Benefits of technology

This method can accurately determine the fault point and display it in real time through the instrument module, which improves the efficiency and accuracy of fault diagnosis and reduces maintenance time and workload.

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Abstract

The invention provides a fault diagnosis display method and system for an all-in-one integrated controller of a hydrogen fuel commercial vehicle. The all-in-one integrated controller comprises a high-low pressing plate module, a hydrogen fuel cell input module, a high-pressure fan output module, a DC-DC output module, an air pump output module, an oil pump output module, a PTC output module, a VCU controller and an instrument module. The fault diagnosis display method comprises the following steps: a high-low pressure plate module of the all-in-one integrated controller compares a direct output current of a module with a current fed back by communication of a VCU controller, compares a current directly output by a contactor with the current fed back by communication of the VCU controller, and compares a current directly output by each load with a current interacted by communication of the VCU controller; comparing the current input by each battery module with the current fed back by the VCU controller in a communication manner; by means of the method and the corresponding system, which section of a defective part has a problem can be diagnosed, a problem point is detected, meanwhile, accurate feedback is carried out on an instrument, and after-sales problem processing can be carried out more accurately.
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