Start-up preparation method for fuel cell system

A technology of a fuel cell system and a preparation method, applied in the control field, can solve the problems of the decay of the life of the stack, the longer accumulation time of the start-up, the lag of the transient response, etc.

Active Publication Date: 2020-02-28
BEIJING SINOHYTEC
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the start-up process of the fuel cell, in order to prevent the attenuation of the life of the stack caused by the "hydrogen-oxygen interface", the anode hydrogen purge is performed before the stack air supply is turned on. At this time, the fuel cell air supply cannot be used to realize the anode hydrogen purge. The hydrogen concen...

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  • Start-up preparation method for fuel cell system
  • Start-up preparation method for fuel cell system

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Embodiment Construction

[0032] Figure 1-2 and the following description describe alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. In order to teach the technical solutions of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art should understand that modifications or substitutions from these embodiments will fall within the protection scope of the present invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. As such, the invention is not limited to the alternative embodiments described below, but only by the claims and their equivalents.

[0033] figure 1 A schematic diagram of a fuel cell system according to one embodiment of the present invention is shown. Such as figure 1 As shown, the fuel cell system includes a stack assembly 1, a hydrogen supply assembly 2, a ga...

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Abstract

The invention provides a start-up preparation method for a fuel cell system. The method comprises the following steps: opening a bypass valve; starting an air compressor of an air supply assembly; starting a hydrogen supply assembly; opening an inlet throttle and an outlet throttle in the air supply assembly; and closing a tailgate valve. The advantages of the method are as follows: the opening ofa fuel cell air supply system is not restricted by the off state of an electric pile, and the starting can be performed before anode hydrogen purging or performed synchronously with the anode hydrogen purging; flexible opening of the fuel cell air supply system under the off state of the electric pile is realized; the air requirements of dilution of mixed air generated by anode hydrogen purging and ventilation of a fuel cell box body are met; the start-up time of the fuel cell air compressor is more flexible; slowing down of the lag effect due to the transient response of the air compressor can be avoided, and the on-off time of the fuel cell can be shortened.

Description

technical field [0001] The present invention relates to a control method, in particular to a start preparation method for a fuel cell system. Background technique [0002] Hydrogen fuel cell vehicle technology is becoming more and more mature. As a new energy vehicle with zero pollution and zero emissions, hydrogen fuel cell vehicles have increasingly entered the transportation system and have been widely recognized by the public. Fuel cell vehicles use hydrogen as fuel, and through the fuel engine, chemical energy is efficiently converted into electrical energy to drive the vehicle. The whole process only discharges pure water, so it is the most ideal energy-saving, environmentally friendly and zero-emission vehicle to replace traditional fossil fuel vehicles in the near future Transportation. [0003] In the air supply system of the fuel cell, the air compressor is the power source of the air flow. Air is sucked in from the environment, and enters the cathode side of the ...

Claims

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Application Information

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IPC IPC(8): H01M8/04225H01M8/04302
CPCH01M8/04225H01M8/04302Y02E60/50
Inventor 徐云飞张国强周鹏飞曲观书胥巍巍
Owner BEIJING SINOHYTEC
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