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Hydrogen emission control method for hydrogen fuel cell

A fuel cell and emission control technology, applied in fuel cells, electrical components, circuits, etc., can solve problems such as difficult to accurately control hydrogen emissions, achieve the effects of improving hydrogen utilization, precise control, and preventing excessive frequency

Pending Publication Date: 2022-07-08
XIANGYANG DAAN AUTOMOBILE TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a hydrogen fuel cell hydrogen emission control method, which can solve the technical problem that it is difficult to accurately control the hydrogen emission in the prior art

Method used

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  • Hydrogen emission control method for hydrogen fuel cell
  • Hydrogen emission control method for hydrogen fuel cell
  • Hydrogen emission control method for hydrogen fuel cell

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Embodiment Construction

[0041]In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0042] The embodiment of the present invention provides a method for controlling hydrogen emission of a hydrogen fuel cell, which can solve the technical problem that it is difficult to accurately control the amount of hydrogen emission in the prior art.

[0043] see figure 1 As shown, an embodiment of the present invention provides a method...

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Abstract

The invention discloses a hydrogen emission control method for a hydrogen fuel cell, and relates to the technical field of fuel cells, and the method comprises the following steps: step S10, calibrating the opening time and the closing time of a hydrogen emission valve of the hydrogen fuel cell under constant-power and variable-power operation; and step S20, controlling the opening and closing of the hydrogen discharge valve according to the actual working condition of the hydrogen fuel cell and the calibrated opening time and closing time of the hydrogen discharge valve when the hydrogen fuel cell operates at constant power and variable power. The hydrogen discharge amount can be accurately controlled, on one hand, performance reduction of the hydrogen fuel cell caused by accumulation of hydrogen impurity gas and redundant water vapor can be prevented, on the other hand, over-high-frequency hydrogen discharge is prevented, and the hydrogen utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a method for controlling hydrogen emission of a hydrogen fuel cell. Background technique [0002] The working principle of proton exchange membrane fuel cell is that hydrogen and oxygen undergo a redox reaction under the catalytic action of a catalyst, generating charge transfer and releasing heat. After the hydrogen enters the fuel cell, it cannot 100% participate in the reaction, and there is still a large amount of hydrogen that does not participate in the reaction. In order to improve the utilization rate of hydrogen, the hydrogen recycling mode is generally adopted, that is, the hydrogen that has not fully participated in the reaction enters the hydrogen inlet through the external pipeline. The hydrogen fuel cell is recirculated inside, which can not only improve the hydrogen utilization rate, but also use the water carried by the hydrogen circulation to humidify the hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04992H01M8/04537H01M8/04089
CPCH01M8/04097H01M8/04604H01M8/04992Y02E60/50
Inventor 张晓鹏张华树钟兵刘浪张斌
Owner XIANGYANG DAAN AUTOMOBILE TEST CENT
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