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High potential control method and device for fuel cell system

A technology for fuel cell systems and fuel cell stacks, applied in the direction of fuel cell control, fuel cells, fuel cell additives, etc., can solve problems such as high potential of fuel cells, increase power output, suppress high The effect of voltage jump

Active Publication Date: 2019-08-09
ZHENGZHOU YUTONG BUS CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high potential control method and device for a fuel cell system, which is used to solve the problem of high potential in low-load or no-load operation of the fuel cell

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] The invention provides a high-potential control device for a fuel cell system, the control device includes a processor and a memory, and the processor is used to process instructions stored in the memory to realize a high-potential control method for the fuel cell system. The high potential control method and device of the fuel cell system limit the generation of high potential of the fuel cell system during low-load or no-load operation only by improving the control method without changing the original structure and components of the fuel cell vehicle. figure 1 The logic control diagram of the high potential control method of the fuel cell system is given, which specifically includes the following steps:

[0035] (1) Detect the tot...

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Abstract

The invention relates to a high potential control method and device for a fuel cell system. The control method comprises the following steps: the total voltage of a fuel cell stack is detected and whether the total voltage of the fuel cell stack is greater than a voltage set threshold is judged; if the total voltage of the fuel cell stack is greater than the voltage set threshold, whether the charging condition for the power cell and / or the turn-on condition corresponding to the electric equipment in the vehicle are met is judged; and if the charging condition for the power cell and / or the turn-on condition corresponding to the electric equipment in the vehicle are met, the power cell is charged and / or the electric equipment in the vehicle is turned on so as to increase the output power ofthe fuel cell. According to the control method, the power output of the fuel cell system is improved by charging the power cell through the fuel cell or turning on one or more corresponding electricequipment in the vehicle when the total voltage of the fuel cell stack is judged to be greater than the voltage set threshold, and generation of the high potential of the fuel cell is effectively suppressed without changing the original structure and components of the fuel cell vehicle.

Description

technical field [0001] The invention relates to a high potential control method and device for a fuel cell system, belonging to the technical field of fuel cell systems. Background technique [0002] Under the dual pressure of energy and environment, fuel cell vehicles have become the direction of the future development of the automobile industry and the focus of research in the field of automobiles. Among the many factors affecting the life of fuel cells, the attenuation of cathode catalyst caused by high potential is considered to be the main factor causing the attenuation of stack performance. Under the condition of high potential, the carrier carbon material is easily oxidized, thereby weakening the binding force between the Pt particles and the carbon support, causing the Pt particles to fall off, and finally causing the Pt particles to dissolve in the electrolyte, which affects the catalytic performance of the stack. What's more serious is that the stripped Pt particl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04298H01M8/04302H01M8/04537
CPCH01M8/04298H01M8/04537H01M8/04559H01M8/04302Y02E60/50
Inventor 李进李维国张鹏凡曹卓涛周鑫杨春博
Owner ZHENGZHOU YUTONG BUS CO LTD
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