Vehicle proton exchange membrane fuel cell (PEMFC) pressure control system

A technology of pressure control and pressure system, which is applied in the field of PEMFC pressure control system for vehicles, can solve problems such as unsolved stack pressure coordination control, and achieve the effects of ensuring high efficiency and safety, realizing coordinated control, and satisfying control characteristics

Active Publication Date: 2012-01-18
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above scheme improves the performance of PEMFC for vehicles to a certain extent, but this invention does not solve the problem of coordinated control of the pressure on both sides of the stack

Method used

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  • Vehicle proton exchange membrane fuel cell (PEMFC) pressure control system
  • Vehicle proton exchange membrane fuel cell (PEMFC) pressure control system

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Embodiment Construction

[0019] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] like figure 1As shown, the vehicle PEMFC pressure control system is arranged on the vehicle PEMFC pressure system, and the vehicle PEMFC pressure system includes a fuel cell stack 5, a hydrogen gas supply device 1 connected to the hydrogen inlet and outlet of the fuel cell stack 5, and a hydrogen gas supply device 1 connected to the fuel cell stack 5. The air supply device 2 for the air inlet and outlet of the battery stack 5, its hydrogen gas supply device 1 includes an air filter 19, a high-speed fan 20, a humidifier 21 and an air flow control valve 22 connected in sequence, and the output end of the air flow control valve 22 is It is connected with the air inlet of the fuel cell stack 5, and the air outlet of the fuel ...

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Abstract

The invention provides a vehicle proton exchange membrane fuel cell (PEMFC) pressure control system, which belongs to the technical field of automobiles and solves the problem of uncoordinated control over pressure on the two sides of a galvanic pile in the prior art. The system is arranged on a vehicle PEMFC pressure system, and the pressure system comprises a fuel cell stack, a hydrogen supply device connected to a hydrogen inlet and a hydrogen outlet of the fuel cell stack and an air supply device connected to an air inlet and an air outlet of the fuel cell stack. The PEMFC pressure control system comprises a hydrogen pressure control circuit and an air pressure control circuit. The hydrogen inlet and the air inlet are provided with a hydrogen pressure sensor and an air pressure sensor respectively. The air pressure control circuit comprises an air proportion integration differentiation (PID) controller and a middle controller connected with the input end of an air PID controller. The hydrogen pressure sensor and the air pressure sensor are both connected with the middle controller. The air PID controller is connected with the air supply device. The system can realize coordinated control over the pressure of a cathode and an anode.

Description

technical field [0001] The invention belongs to the technical field of automobiles and relates to a PEMFC pressure control system for automobiles. Background technique [0002] PEMFC is the English abbreviation of proton exchange membrane fuel cell (proton exchange membrane fuel cell). In principle, PEMFC power generation is equivalent to the "reverse" device of water electrolysis. Its single cell is composed of anode, cathode and proton exchange membrane. The anode is the place where the hydrogen fuel is oxidized, and the cathode is the place where the oxidant is reduced. Both electrodes contain catalysts to accelerate the electrochemical reaction of the electrode, and the proton exchange membrane is used as the electrolyte. When working, it is equivalent to a DC power supply, its anode is the negative pole of the power supply, and the cathode is the positive pole of the power supply. Proton exchange membrane fuel cell (PEMFC) does not involve hydrogen-oxygen combustion i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/0438H01M8/04746
CPCY02E60/50
Inventor 褚磊民李志成孙文凯李传海由毅丁勇赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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