Making method of proton exchange film fuel cell electric piling

A fuel cell stack and proton exchange membrane technology, which can be applied to fuel cell components, fuel cells, solid electrolyte fuel cells, etc., can solve the failure to improve the reaction efficiency, the problem of MEA support, and the failure to improve the volume specific power. and other problems, to achieve the effect of improving laser welding efficiency, affecting contact resistance, and increasing contact area

Active Publication Date: 2007-11-28
上海氢晨新能源科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, neither of the above two aspects can fundamentally change the form of the membrane and plate of the traditional fuel cell. Although the first method participates in the MEA of the spiral structure, it still uses a planar plate, and the volume specific power has not been improved. , and at the same time bring the MEA support problem; although the second method solves the corrosion problem, the contact area between the fuel gas and the MEA has not increased, and the reaction efficiency has not been improved.

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  • Making method of proton exchange film fuel cell electric piling
  • Making method of proton exchange film fuel cell electric piling
  • Making method of proton exchange film fuel cell electric piling

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Embodiment 1

[0035] This embodiment is implemented under the following conditions of implementation and technical requirements:

[0036] The corrugated MEA 2 is formed by hot pressing, and the upper and lower dies are made of metal aluminum. When the temperature of the hot pressing process is controlled at 130°C, the overall chemical and physical properties of the MEA will not be affected during bending. The unipolar plate 8 is made of 0.2mm ultra-thin stainless steel, and the dense pores are obtained through a precision punching process with a diameter of 0.4mm. At the same time, a laser welding area 9 is reserved according to the design requirements, and the area width is 0.6mm. Using laser welding technology with concentrated energy and small heat-affected zone, the spot width is 0.4mm, and a pair of unipolar plates are precisely welded into bipolar plates. In this embodiment, a fiber laser is used.

[0037] For the acidic working environment of proton exchange membrane fuel cells, the ...

Embodiment 2

[0041] This embodiment is implemented under the following conditions of implementation and technical requirements:

[0042] The corrugated MEA 2 is formed by hot pressing, and the upper and lower dies are made of metal aluminum. When the temperature of the hot pressing process is controlled at 135°C, the overall chemical and physical properties of the MEA will not be affected during bending. The unipolar plate 8 is made of 0.5mm ultra-thin stainless steel, and the dense pores are obtained through a precision punching process with a diameter of 0.8mm. At the same time, a laser welding area 9 is reserved according to the design requirements, and the area width is 1mm. Using laser welding technology with concentrated energy and small heat-affected zone, the beam spot width is 0.6 mm, and a pair of unipolar plates are precisely welded into bipolar plates. In this embodiment, a fiber laser is used.

[0043] This embodiment also adopts cyclic voltammetry, and the electrolyte is a mi...

Embodiment 3

[0047] This embodiment is implemented under the following conditions of implementation and technical requirements:

[0048] The corrugated MEA 2 is formed by hot pressing, and the upper and lower dies are made of metal aluminum. When the temperature of the hot pressing process is controlled at 140°C, the overall chemical and physical properties of the MEA can not be affected during bending. The unipolar plate 8 is made of 1.0mm ultra-thin stainless steel, and the dense pores are obtained through a precision punching process with a diameter of 1mm. At the same time, a laser welding area 9 is reserved according to the design requirements, and the area width is 1.2mm. Using laser welding technology with concentrated energy and small heat-affected zone, the spot width is 0.8mm, and a pair of unipolar plates are precisely welded into a bipolar plate. In this example, a fiber laser is used.

[0049] This embodiment also adopts cyclic voltammetry, and the electrolyte is a mixed solut...

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Abstract

The invention discloses a making method of proton exchange film fuel battery pile in the fuel battery technical domain, which comprises the following steps: (1) pressing plane MEA into wave shape under heating condition; (2) adopting micro-fine pushing technique to punch the hyperthin plane metal plate; punching the plate with hole into wave shape to mate wave-shaped MEA; obtaining monopole board; (3) adopting laser welding technique to weld a couple of monopole board into double-pole board; (4) plating a layer of conductive polyaniline on the metal surface through circulating volt-ampere method. The invention improves the reacting efficiency and energy density, which lightens the weight and resists corrosion.

Description

technical field [0001] The invention relates to a method for manufacturing a cell stack in the technical field of fuel cells, in particular to a method for manufacturing a proton exchange membrane fuel cell stack. Background technique [0002] The fuel cell with hydrogen as raw material is not a storage battery in the traditional sense, but a promising new power generation technology with high efficiency and cleanliness recognized by the world. In this century, it is likely to replace conventional thermal power generation in large quantities and become the fourth major power generation method after hydropower, thermal power and nuclear power. However, the current high manufacturing cost and low power density hinder the popularization and application of fuel cells. [0003] A typical proton exchange membrane fuel cell is mainly composed of a bipolar plate, a proton exchange membrane, and a catalyst. At present, the manufacturing cost per kilowatt of fuel cells is about 500 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/24H01M8/10H01M8/02H01M8/0245H01M8/0247H01M8/1006H01M8/2404
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 来新民易培云倪军林忠钦彭林法刘东安蓝树槐胡鹏
Owner 上海氢晨新能源科技有限公司
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