Clamping-pressure-formation-based proton exchange membrane fuel cell metal bipolar plate processing method

Abstract

The invention discloses a clamping-pressure-formation-based proton exchange membrane fuel cell metal bipolar plate processing method, which comprises the following steps of: (1) processing a clamping pressure formation die according to the design requirement of a proton exchange membrane fuel cell metal bipolar plate, wherein the die comprises left and right male steel dies and a middle composite die, the middle composite die comprises a left female steel die, a soft die and a right female steel die connected sequentially from left to right, the left male steel die is opposite to the left female steel die, the right male steel die is opposite to the right female steel die, and a gap between the left male steel die and the left female steel die and a gap between the right male steel die and the right female steel die are processing stations of the bipolar plate; (2) putting the bipolar plate blank into the processing stations, and pressing the left and right male steel dies to the middle part to form the bipolar plate; and (3) cutting the formed bipolar plate to obtain the proton exchange membrane fuel cell metal bipolar plate. According to the method, the processing efficiency can be improved, the cost can be reduced, the process is simple, and batch production is easily realized.

Description

technical field [0001] The invention relates to a manufacturing method in the technical field of fuel cells, in particular to a method for processing a metal bipolar plate of a proton exchange membrane fuel cell. Background technique [0002] The fuel cell is mainly composed of a membrane electrode (MEA) and a bipolar plate; the MEA is the core of the fuel cell, and the bipolar plate is one of the key components of the battery, which plays the role of current collection, gas distribution, water and heat management, and the cost accounts for More than 46% of the total cost of fuel cells is one of the important reasons for the high price of proton exchange membrane fuel cells, and the quality directly determines the output power and service life of fuel cell stacks. [0003] At present, the research on fuel cell bipolar plates mainly focuses on flexible graphite bipolar plates (and injection molded graphite bipolar plates), metal bipolar plates and composite bipolar plates. T...

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Problems solved by technology

[0007] In order to overcome the shortcomings of low processing efficiency, high cost, complicated process and unfavorable mass production of the existing manufacturing method for metal bipolar plates of proton exchange membrane fuel cells, the present invention provides a process that improves processing efficiency, reduces costs, and has a simple process. A processing method for metal bipolar plates of proton exchange membrane fuel cells based on clamping forming that is easy to realize mass production

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