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Air-cooled fuel cell hydrogen supply system and control method

A fuel cell and supply system technology, applied in the direction of fuel cells, power system fuel cells, electrical components, etc., can solve problems such as unreasonable exhaust methods, achieve simple and efficient implementation, expand the number of use places, and improve service life Effect

Active Publication Date: 2021-06-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The present invention aims at the problem of unreasonable exhaust methods in the above-mentioned prior art, and proposes a hydrogen supply system and control method for air-cooled fuel cells, which can intelligently and dynamically adjust the exhaust cycle, time, and pressure changes inside the stack

Method used

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  • Air-cooled fuel cell hydrogen supply system and control method

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Embodiment 1

[0037] This embodiment proposes a hydrogen supply system for an air-cooled fuel cell, such as image 3 As shown, it includes a hydrogen storage bottle, a hydrogen pipeline, a mechanical pressure reducing valve, an intake solenoid valve, an exhaust proportional solenoid valve, a fuel cell controller, an intake pressure detection device, an outlet pressure detection device and a voltage saving detection device; The hydrogen storage bottle is connected to the intake end of the air-cooled fuel cell stack through a hydrogen pipeline provided with a mechanical decompression valve, an intake pressure detection device, and an intake solenoid valve in sequence, and the exhaust end of the air-cooled fuel cell stack is passed through the outlet pressure. The detection device and the exhaust proportional solenoid valve are exhausted. The node voltage detection device is arranged on each battery unit in the air-cooled fuel cell stack. The fuel cell controller receives the intake air pressur...

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Abstract

The invention discloses an air-cooled fuel cell hydrogen supply system and a control method, and belongs to the technical field of new energy power generation. The hydrogen supply system comprises a hydrogen storage bottle, a hydrogen pipeline, a mechanical pressure reducing valve, an air inlet valve, an exhaust proportional electromagnetic valve, a fuel cell controller, an air inlet pressure detection device, an air outlet pressure detection device and a power saving voltage detection device. The control method comprises the steps that the mechanical pressure reducing valve and the air inlet valve are opened, the exhaust proportional electromagnetic valve is closed, the battery begins to output electric energy, when the average power saving voltage is reduced to U1, the inlet pressure of the exhaust proportional electromagnetic valve is controlled to be PB or the exhaust proportional electromagnetic valve is opened to the opening degree tau1, and when the average power saving voltage is recovered to U2, the inlet pressure P is controlled to be gradually increased to PA or the opening tau is controlled to be gradually reduced to 0, and the process is continuously repeated in the working process of the cell, so that intelligent emission of redundant hydrogen in the air-cooled fuel cell stack is realized, and the working performance of the cell and the hydrogen utilization rate are improved.

Description

technical field [0001] The invention belongs to the technical field of new energy power generation, and in particular relates to an air-cooled fuel cell hydrogen supply system and a control method. Background technique [0002] Proton exchange membrane fuel cell has the advantages of high energy density, high energy conversion efficiency, and zero pollution. It is an excellent choice for human beings in the face of energy crisis and has broad development prospects. Among them, the air-cooled fuel cell eliminates the equipment for cooling liquid circulation and external humidification, reduces the energy loss of the system on the auxiliary parts (Bop) of the system while reducing the weight of the entire system, and thus has higher energy efficiency, so air-cooled Fuel cells have great advantages in fields such as unmanned aerial vehicles and small and lightweight power systems. [0003] The usage scenarios of air-cooled fuel cells are mostly small power systems. The amount ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04089H01M8/0438H01M8/04537H01M8/04746H01M8/04992
CPCH01M8/04104H01M8/04388H01M8/04402H01M8/04559H01M8/04761H01M8/04753H01M8/04992H01M2250/20Y02E60/50
Inventor 高艳赵英昊汤浩殷聪李凯
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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