Device and method of realizing high-speed acquisition and real-time transmission of hydrogen fuel cell voltage

Abstract

The invention relates to a device and a method of realizing high-speed acquisition and real-time transmission of hydrogen fuel cell voltage, mainly to sample the analog voltage of each single cell ofa hydrogen fuel cell stack system at a high speed, perform analog-to-digital conversion after signal conditioning and anti-interference processing, upload the converted voltage data to a BMS main control unit and a background server at a high speed and thus, realize accurate control on each functional component of the hydrogen fuel cell stack system and background big data analysis and mining. Compared with the prior art, the device and the method have the advantages that by using a distributed synchronous sampling technology, high-speed synchronous acquisition of the cell voltage is realized;by adopting an Ethernet switch, a local area network is constructed to realize remote high-speed data transmission; by increasing the number of servers and utilizing a multi-threading technology, distributed data acquisition can be realized, the number of simultaneous online devices is expanded, remote management, monitoring and big data mining on the hydrogen fuel cell are realized, and the networking communication method has high efficiency, fast communication speed and good real-time performance.

Description

technical field [0001] The invention relates to the technical field of hydrogen fuel cells, and more specifically, to a device and method for realizing high-speed acquisition and real-time transmission of hydrogen fuel cell voltages. Background technique [0002] With the deterioration of the global environment and climate and the shortage of primary energy such as coal, oil, and natural gas, my country has vigorously developed new energy vehicles in recent years. According to statistics from the China Association of Automobile Manufacturers: From January to November 2018, the production and sales of new energy vehicles in my country were Completed 1.054 million and 1.03 million vehicles, an increase of 63.6% and 68% respectively over the same period of the previous year. Substituting electricity for oil, saving energy and reducing emissions is not only in line with my country's national conditions, but also represents the development direction of the world's automobile indus...

AI Technical Summary

Problems solved by technology

[0004] Although the hydrogen fuel cell has many outstanding advantages, it also has its disadvantages compared with the general power storage battery. First, the voltage platform of a single cell is low. Usually, the theoretical voltage value of a single fuel cell It is 1.2V, and the actual operating voltage is generally 0.6V~0.8V, or even lower. Therefore, in practical applications, multiple fuel cells will be connected in series to form a fuel cell stack to supply power to external circuits; second, the output volts The safety characteristics are relatively soft, and the power variation range is large, that is, when the load power assumed increases, the slope of the output voltage drop of the fuel cell is much larger than that of the general power battery. When the load fluctuates, the fluctuation of the output voltage of the fuel cell is larger The fluctuation is much larger than that of ordinary power batteries

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