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Metal bipolar plate for proton exchange membrane fuel cell

A technology of metal bipolar plates and proton exchange membranes, applied in fuel cells, circuits, electrical components, etc., can solve problems such as insufficient reaction between hydrogen and oxygen, reduced fuel cell output performance, and supply rate that cannot match the hydrogen supply rate. Achieve the effect of convenient full contact and improved output performance

Pending Publication Date: 2021-12-14
嘉寓氢能源科技(辽宁)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that the groove structure corresponding to the flow field area of ​​the anode unipolar plate and the cathode unipolar plate is the same, and both oxygen and hydrogen diffuse in the groove, but because the diffusion rate of hydrogen is faster than that of oxygen , so the supply rate of oxygen cannot match the supply rate of hydrogen, and part of the hydrogen enters the flow field area and is discharged before reacting, which makes the reaction of hydrogen and oxygen insufficient, reducing the output performance of the fuel cell

Method used

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  • Metal bipolar plate for proton exchange membrane fuel cell
  • Metal bipolar plate for proton exchange membrane fuel cell
  • Metal bipolar plate for proton exchange membrane fuel cell

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Embodiment Construction

[0034] The following is attached Figure 1-5 The application is described in further detail.

[0035] The embodiment of the present application discloses a metal bipolar plate used in a proton exchange membrane fuel cell. refer to figure 1, the metal bipolar plate includes an electrode assembly 1, the electrode assembly 1 includes a set of anode plates 11 and cathode plates 12 welded on the back, the anode plates 11 and the cathode plates 12 are rectangular, and the anode plates 11 and the cathode plates 12 are made of Made of sheet metal. A first hydrogen inlet 111, a first condensate inlet 112 and a first oxygen inlet 113 are opened on one side of the anode plate 11, and the first hydrogen inlet 111, the first condensate inlet 112 and the first oxygen inlet 113 are along the The anode plate 1 is arranged in the width direction, and a second hydrogen inlet 123 , a second condensing agent inlet 124 and a second oxygen inlet 125 are opened on the corresponding position of th...

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Abstract

The invention relates to a metal bipolar plate for a proton exchange membrane fuel cell, and the bipolar plate comprises an electrode assembly; the electrode assembly comprises an anode plate and a cathode plate, the backs of the anode plate and the cathode plate are welded, and the anode plate is provided with a first hydrogen inlet and a first oxygen inlet; a second hydrogen inlet, a second oxygen inlet, a second hydrogen outlet and a second oxygen outlet are formed in the cathode plate, a first flow guide area is arranged in the middle of the side, away from the cathode plate, of the anode plate, and a hydrogen channel distributed in a snake shape is arranged in the first flow guide area; the first hydrogen inlet and the first hydrogen outlet are both communicated with the hydrogen channel, a second flow guide area is arranged in the middle of the side, away from the anode plate, of the cathode plate, a plurality of oxygen channels are arranged in the second flow guide area, and the second oxygen inlet and the second oxygen outlet are both communicated with the oxygen channels. The fuel cell has the effects that hydrogen and oxygen react more sufficiently, and the output performance of the fuel cell is improved.

Description

technical field [0001] The present application relates to the field of fuel cells, in particular to a metal bipolar plate for a proton exchange membrane fuel cell. Background technique [0002] In principle, the proton exchange membrane fuel cell is equivalent to the "reverse" device of water electrolysis. A fuel cell consists of a bipolar plate and a proton exchange membrane, wherein the proton exchange membrane is the core of the fuel cell, and the bipolar plate plays the role of collecting current and gas distribution in the fuel cell. [0003] The Chinese utility model patent with authorized notification number CN203760565U discloses a metal bipolar plate for a proton exchange membrane fuel cell. The metal bipolar plate includes a cathode unipolar plate and an anode unipolar plate made of metal sheets. The back of the polar plate and the anode unipolar plate are facing each other, and the opposite surfaces of the cathode unipolar plate and the anode unipolar plate are p...

Claims

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Application Information

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IPC IPC(8): H01M8/0258H01M8/0263
CPCH01M8/0258H01M8/0263Y02E60/50
Inventor 任杰施忠贵孟洪亮张洋徐小龙
Owner 嘉寓氢能源科技(辽宁)有限公司
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