Opening control method for hydrogen cylinder system of hydrogen fuel cell

Abstract

The invention provides an opening control method for a hydrogen cylinder system of a hydrogen fuel cell. The opening control method comprises the following steps: S100, acquiring the current pressure of each hydrogen cylinder; S200, sequencing and numbering the hydrogen cylinders according to the pressure difference threshold values of bottleneck valves; S300, screening out the cylinder opening valve with the maximum pressure difference threshold value in the cylinder opening valves which are not opened, wherein the number of the hydrogen cylinder corresponding to the cylinder opening valve is A, the pressure of the hydrogen cylinder with the number A is P (A), and the pressure difference threshold value of the cylinder opening valve of the hydrogen cylinder with the number A is DPmax; S400, reading the current pressure Ptube of a hydrogen supply pipeline, judging whether P(A) -Ptube is greater than or equal to DPmax or not, if so, executing step S600, and if not, executing step S500; S500, keeping the bottleneck valve of the hydrogen cylinder with the serial number of A in a closed state, operating a hydrogen fuel cell, and turning to step S400; S600, opening the cylinder opening valve of the hydrogen bottle with the serial number of A, and after waiting for time twait, turning to step S700; and S700, judging whether the bottleneck valves of all the hydrogen cylinders are opened or not, if so, ending the process, and if not, turning to step S300.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a method for controlling opening of a hydrogen cylinder system of a hydrogen fuel cell. Background technique [0002] Hydrogen proton exchange membrane fuel cell is an efficient and pollution-free energy conversion device, which can convert the chemical energy stored in hydrogen into electrical energy and supply it to external loads. In the field of transportation, in order to improve the mileage of vehicles loaded with hydrogen fuel cells, hydrogen cylinders with a certain volume and pressure are usually equipped. The hydrogen cylinders are organically combined with valves, pipelines, sensors and controllers to form a fully functional system. Hydrogen cylinder system. The hydrogen cylinder system has various functions, such as filling hydrogen, supplying hydrogen to fuel cells, storing hydrogen, etc. [0003] The solenoid valve can be used as the bottle mouth valve of the h...

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Problems solved by technology

[0004] For the hydrogen that has selected the hydrogen bottle bottle mouth valve (that is, the second hydrogen bottle bottle mouth valve) that "the smaller the pressure difference between the hydrogen gas pressure stored in the hydrogen gas bottle and the hydrogen gas pressure in the high-pressure pipeline, the easier it is to open". For the hydrogen bottle system, after the hydrogen bottle system of the fuel cell receives the command to open the bottle mouth valve of the hydrogen bottle, if it is required to open a

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