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Control method and device of vehicle-mounted hydrogen system and vehicle-mounted hydrogen system

A control method and control device technology, applied in the direction of battery/fuel cell control devices, electric vehicles, vehicle components, etc., can solve problems such as the inability to meet the hydrogen demand of fuel cell systems, improve real-time load-changing capabilities, and meet frequent changes , to ensure the effect of real-time supply

Active Publication Date: 2020-06-05
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a control method and device for a vehicle-mounted hydrogen system, which is used to solve the problem that the control method in the prior art cannot meet the hydrogen demand of the fuel cell system

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  • Control method and device of vehicle-mounted hydrogen system and vehicle-mounted hydrogen system
  • Control method and device of vehicle-mounted hydrogen system and vehicle-mounted hydrogen system
  • Control method and device of vehicle-mounted hydrogen system and vehicle-mounted hydrogen system

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Embodiment Construction

[0029] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Method example:

[0031] In order to realize the real-time demand of the fuel cell system for hydrogen, this embodiment proposes a control method for the vehicle-mounted hydrogen system to control the low-pressure output of the vehicle-mounted hydrogen system, which specifically includes the following steps:

[0032] Establish the pressure prediction model of the output gas of the on-board hydrogen system. Specifically, the actual pressure value of the output gas of the on-board hydrogen system is continuously collected within a set time (for example, n sampling times), and the original data sequence is established according to these actual pressure values, which is x (0) ={x (0) (1), x (0) (2),...,x (0) (n)}, then the original data sequence establishes a gray prediction model GM (1, 1) (for the gray system of the hydrogen system w...

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Abstract

The invention relates to a control method and device of a vehicle-mounted hydrogen system and the vehicle-mounted hydrogen system, and belongs to the field of fuel cell buses. The method comprises: establishing a pressure prediction model of an output gas of the vehicle-mounted hydrogen system, and determining a pressure prediction value used for controlling the pressure of the output gas of the vehicle-mounted hydrogen system according to the pressure prediction model; calculating a difference value between the pressure prediction value and a set target pressure value to obtain a prediction error; obtaining an actual pressure value of output gas of the vehicle-mounted hydrogen system, and calculating a difference value between the actual pressure value and the target pressure value to obtain an actual error; and comparing the prediction error with the actual error, and when the prediction error is smaller than the actual error, outputting a pressure prediction value of the next momentby using the pressure prediction model as a target pressure of the next moment to control the vehicle-mounted hydrogen system to output gas. The change trend of the output pressure of the vehicle-mounted hydrogen system is judged in advance, and the pressure of the output gas of the vehicle-mounted hydrogen system is adjusted in advance, so that the supplied hydrogen can meet the requirements ofa fuel cell system.

Description

technical field [0001] The invention belongs to the field of fuel cell passenger cars of new energy vehicles, and in particular relates to a control method and device for a vehicle-mounted hydrogen system and the vehicle-mounted hydrogen system. Background technique [0002] The on-board hydrogen system is the fuel supply assembly of the fuel cell system. Its main function is to reduce the 35MPa high-pressure hydrogen in the high-pressure hydrogen storage bottle to the low-pressure hydrogen below 1MPa through the pressure regulating valve to meet the needs of the internal chemical reactions of the fuel cell system. gas flow and pressure. However, the working conditions of fuel cell buses are constantly changing, and the output power of the fuel cell system varies with the working conditions of the whole vehicle, which makes the amount of hydrogen required change accordingly. The output power of the battery system varies greatly, and the demand for hydrogen increases sharply...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04746H01M8/04992B60L58/30
CPCH01M8/04992H01M8/04753B60L58/30Y02T90/40Y02E60/50B60L2260/44H01M2250/20H01M8/04388
Inventor 李贺张涛张龙海蒋尚峰司耀辉李维国
Owner ZHENGZHOU YUTONG BUS CO LTD
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