Fuel cell system based on multi-sensing information

Abstract

The invention discloses a fuel cell system based on multi-sensing information and relates to the field of fuel cells. The fuel cell system comprises a proton exchange membrane fuel cell obtaining assisting system, i.e., a temperature regulator, a humidity regulator and a gas inlet pipeline temperature, humidity and gas pressure sensor of a working state of a compressor; the fuel cell system further comprises a limited area current and temperature detection sheet for obtaining current density and temperature information of two polar plates in a proton exchange membrane fuel cell stack; the fuelcell system based on the multi-sensing information comprises a vehicle-mounted proton exchange membrane fuel cell system, an intelligent communication system, a cloud computation system based on sharing information and a proton exchange membrane fuel cell state monitoring and abnormal state early warning system, and further comprises a signal amplification and processing module and a data receiving and storage module. By adopting the fuel cell system disclosed by the invention, the defects in the prior art that a state monitoring signal of a vehicle-mounted fuel cell is not accurate and the timeliness is not good are also overcome.

Description

technical field [0001] The invention relates to a vehicle-mounted proton exchange membrane fuel cell system, in particular to a fuel cell system based on multi-sensing information. Background technique [0002] With the continuous development of new energy technology, compared with pure electric vehicles powered by power batteries, fuel cell electric vehicles are considered to have the most potential for development due to their zero pollution, adaptability to low temperature environments, and convenient hydrogenation. New energy vehicles, currently fuel cell vehicles as well as pre-sales in some countries. [0003] As the power source of fuel cell vehicles, the vehicle-mounted fuel cell system, due to its complex structure, harsh service conditions, and frequent changes in operating conditions, will inevitably have various failures during the use of fuel cells. If it cannot be detected in time Internal faults will cause the system to fail to work normally, cause irreversib...

AI Technical Summary

Problems solved by technology

[0003] Vehicle-mounted fuel cell system is the power source of fuel cell vehicles. Due to its complex structure, harsh service conditions and frequent changes in operating conditions, various failures will inevitably occur during the use of fuel cells. If it cannot be detected in time Internal faults will cause the system to fail to work normally, cause irreversible damage to the fuel cell system, and even cause a major hydrogen safety accident. The third) fuel cell vehicle industry forum mentioned that the on-board fuel cell system and hydrogen storage and transportation device will With the implementation of information management, the on-board fuel cell system will be under the management of cloud data, and the service life and safety of the on-board fuel cell system will be further guaranteed, but the reliability and durability of the fuel cell and the internal state of the fuel cell and early warning research

[0004] Most fuel cell fault diagnosis is based on offline detection. When the fuel cell has a visible fault, shut down the fuel cell to check the problems one by one. This method often relies on the experience of maintenance personnel and has a large blindness , even misjudgments or missed judgments of faults, the current research on online monitoring methods is mainly based on the fact that the single-chip polarization voltage of the fuel cell is a direct reflection of the performance of the fuel cell system, which is determined by measuring the overall polarization voltage of the battery The internal state and fault analysis of the fuel cell, that is, the internal state of the fuel cell is determined by its external output, and the current density and temperature distribution inside the fuel cell cannot be accurately determined. This kind of fuel cell fault diagnosis based on the fuel cell output characteristics is with certain limitations

In terms of state monitoring of solid oxide fuel cells, there has been some research on reflecting the state of fuel cells based on some measuring devices installed inside the fuel cells. In the patent application number 201710354426.0 "a solid oxide fuel cell stack In "Fault Diagnosis Method and System", the internal temperature and current parameters of the fuel cell are obtained by simulating the normal working state of the fuel cell, the internal state of the fuel cell stack is monitored in real time, and a corresponding diagnostic model is established to judge the collected solid oxide fuel. Whether the internal temperature and current parameters of the battery stack are in a normal state; in terms of proton exchange membrane fuel cells, this means of monitoring the working state of fuel cells based on internal state parameter monitoring is rarely used in proton exchange membrane fuel cells, in order to improve For the accuracy of proton exchange membrane fuel cell status monitoring, a fuel cell status monitoring and abnormal signal early warning system based on the measurement of internal parameters of the proton exchange membrane fuel cell stack should be established

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