Hydrogen fuel cell engine cold start method

A fuel cell, cold start technology, applied in the direction of fuel cells, fuel cell additives, fuel cell control, etc., can solve problems such as difficulty in engine cold start

Active Publication Date: 2019-11-08
深圳国氢新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to propose a hydrogen fuel cell engine cold start method, which aims to solve the problem of difficult cold start of hydrogen fuel cell engines in the prior art

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  • Hydrogen fuel cell engine cold start method
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  • Hydrogen fuel cell engine cold start method

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Embodiment Construction

[0037] Embodiments of the present invention will be described in detail below, examples of which are shown in the drawings, wherein like reference numerals designate like elements or elements having the same function throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, but cannot be construed as limitations to the present invention. Based on the embodiments in the present invention, those of ordinary skill in the art have no creative work All other embodiments obtained under the premise all belong to the protection scope of the present invention.

[0038] The present invention provides a hydrogen fuel cell engine cold start method that can be quickly self-started in a low temperature environment. The method is based on the structure of the hydrogen fuel cell system, such as figure 1 As shown, the hydrogen fuel cell system includes an electric stack 1, an air supply module, a hydro...

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Abstract

The invention discloses a hydrogen fuel cell engine cold start method which comprises: performing a communication check on an electrical device; if no fault is found out in the communication check, performing a boot check; if no fault is found out in the boot check, turning on a contactor to start the engine; enabling a hydrogen fuel cell to output a preset current, increasing the load of the hydrogen fuel cell if no fault is detected within a preset time in order that the output power of the hydrogen fuel cell reaches at least 50% of the rated power. The method preheats the hydrogen fuel cellwith a preset small current before increasing the load of the hydrogen fuel cell, and melts the ice and frost on a proton exchange membrane by the heat generated by an electrochemical reaction in thepreheating process so as to prevent the ice and frost from affecting the start speed of the hydrogen fuel cell and prevent the excessively low voltage of a single hydrogen fuel cell caused by excessively low temperatures from resulting in a cold start failure, thereby increasing a cold start success rate.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a method for cold starting a hydrogen fuel cell engine. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) has the advantages of high energy conversion efficiency, low operating temperature, zero pollution, high energy density, and wide source of fuel. , Backup power supply, distributed power station and many other fields. [0003] When a hydrogen fuel cell works in a low temperature environment, the internal cathode side H + ions and incoming O 2 The water generated by the reaction remains inside the stack, and will freeze in a low-temperature environment below the freezing point, resulting in the blockage of the catalytic layer and diffusion layer in the stack, hindering the progress of the electrochemical reaction, and the volume change caused by the freezing of water is also It will cause damage to the internal structure of the hydrogen fuel cell, resulting ...

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Application Information

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IPC IPC(8): H01M8/04223H01M8/04298H01M8/04302
CPCH01M8/04253H01M8/04268H01M8/04298H01M8/04302Y02E60/50
Inventor石宝宝彭旭彭晖郭玉平
Owner深圳国氢新能源科技有限公司