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Fuel cell purging method, system, control method and control device

A fuel cell and gas control technology, applied in fuel cell control, fuel cells, fuel cell additives, etc., can solve the problem of inability to dry the membrane electrode moisture, and achieve the effect of speeding up the drying speed and improving the purging efficiency

Active Publication Date: 2022-02-15
CHINA AUTOMOTIVE INNOVATION CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above problems in the prior art, the present application provides a fuel cell purging method, system, control method and control device to solve the technical problem that the prior art cannot quickly dry the moisture in the membrane electrode

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Embodiment Construction

[0039] The embodiment of the present application discloses a fuel cell purging method, system, control method and control device, which can accelerate the drying speed of moisture in the fuel cell and improve the purging efficiency of the fuel cell.

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the invention with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0041] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a spe...

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Abstract

The invention relates to the technical field of fuel cells, and discloses a fuel cell purging method and system, a control method and a control device.The method comprises the steps that first preset gas is introduced into the cathode side of a fuel cell, and second preset gas is introduced into the anode side of the fuel cell, so that the fuel cell is purged; intermittently a preset current on the fuel cell is loaded based on the preset interval time; the voltage of the fuel cell in the purging process is monitored; and when it is monitored that the voltage value of the current voltage is smaller than or equal to the first target voltage threshold value, intermittent loading of the preset current is stopped, and introduction of the first preset gas and the second preset gas is stopped. In the purging process of the fuel agent cavity and the oxidizing agent cavity of the fuel cell, purging is carried out by monitoring the voltage of the fuel cell, loading the fuel cell for multiple times and stopping loading the current, the drying speed of water in the fuel cell can be increased, and the purging efficiency of the fuel cell is improved.

Description

technical field [0001] The present application relates to the technical field of fuel cells, in particular to a fuel cell purging method, system, control method and control device. Background technique [0002] A fuel cell is a device that directly converts fuel chemical energy into electrical energy, and can be widely used in many fields such as mobile, fixed and portable auxiliary power systems, submarines and space shuttles. [0003] Compared with traditional internal combustion engines, fuel cells have the advantages of high power density, high efficiency, and no pollution. However, at present, fuel cells are mainly used in room temperature conditions, and cannot be widely used in sub-zero low temperature environments. [0004] The fuel cell generates electricity by the reaction of hydrogen and oxygen, and the reaction product is liquid water, so there is a large amount of liquid water in the battery. In sub-zero and other low-temperature environments, the liquid water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04119H01M8/04298H01M8/04302H01M8/04492H01M8/04537
CPCH01M8/04156H01M8/04298H01M8/04302H01M8/04492H01M8/04544Y02E60/50
Inventor 王英陶安文金伟鲍晓囡李庆兵
Owner CHINA AUTOMOTIVE INNOVATION CORP
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