Metal sheet profiled proton exchange membrane fuel cell bipolar plate

A proton exchange membrane and thin metal plate technology, applied in solid electrolyte fuel cells, fuel cells, fuel cell components, etc., can solve the problems of increasing assembly processes, assembly errors, increasing the weight of bipolar plates, etc., and achieve improved sealing performance Effect

Active Publication Date: 2008-05-21
上海氢晨新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The form of three metal plates is easier to implement structurally, but it will increase the weight of the bipolar plate, and at the same time increase the assembly process, which may cause additional assembly errors

Method used

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  • Metal sheet profiled proton exchange membrane fuel cell bipolar plate
  • Metal sheet profiled proton exchange membrane fuel cell bipolar plate

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Embodiment Construction

[0016] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0017] Figure 1 is a schematic diagram of the overall structure, including two identical flow field veneers 1 and 2. The entire plate structure is almost completely symmetrical, and can be formed by one stamping under a set of molds, which are respectively used as the cathode and anode of the bipolar plate.

[0018] As shown in Figure 2, it is the front view of the flow field veneer. The middle area of ​​the flow field veneer is the reaction flow field 3, which adopts the improved straight flow channel interdigitated flow field, and the cross section of the flow chann...

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Abstract

The invention relates to a fuel-cell bipolar plate of proton exchange membrane by metal veneer forming, belonging to a fuel cell technical field, comprising two same flow-field veneers. The inventionis characterized in that: the two same flow-field veneers are respectively used as an anode and a cathode, and the two same flow-field veneers are connected together by a peripheral interface and a middle flow-field interface and welded together via symmetrical joint; three inlets and three outlets are arranged on each flow-field veneer and respectively are a fuel gas inlet, a fuel gas outlet, anoxidant inlet, an oxidant outlet, a coolant inlet and a coolant outlet; a plurality of rounded locating holes are respectively arranged at the middle of the two sides. The invention has the advantagesof simpler structure for only two same metal veneers, lower manufacturing cost for only a forming die, using special design of only adding sealing rings to a couple of inlet and outlet to the inletsand the outlets of the reaction gases and reducing use time of the sealing rings.

Description

technical field [0001] The invention relates to a bipolar plate in the technical field of fuel cells, in particular to a proton exchange membrane fuel cell bipolar plate formed from a thin metal plate. Background technique [0002] With the development of modern civilization, people gradually realize that there are two major drawbacks in the traditional way of energy utilization. One is that the chemical energy stored in the fuel must first be converted into thermal energy before it can be converted into mechanical energy or electrical energy. Limited by the Carnot cycle and modern materials, the efficiency obtained at the machine end is only 33-35%, more than half of the energy It is lost in vain; the second is that the traditional energy utilization method has caused a huge amount of waste water, waste gas, waste residue, waste heat and noise pollution to the human living environment today. Fuel cells are known as the fourth-generation power generation device after water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/86H01M8/10H01M8/1004
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 来新民胡鹏彭林法林忠钦倪军刘冬安麦建明
Owner 上海氢晨新能源科技有限公司
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