Forming method of electromagnetic driving flexible-mould for fuel cell metal bipolar plate

A metal bipolar plate and fuel cell technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve problems such as difficulty in coordination, cost of driving plates that cannot be reused, etc., to increase the selection range, improve the forming limit, and improve flexibility Effect
CN102263272BActive Publication Date: 2013-07-03HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2013-07-03

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Abstract

The invention relates to a method for forming a fuel cell metal bipolar plate. The invention aims at the problems of a conventional plastic deformation means (such as a punching forming means) for forming a metal sheet that a raised mould and a concave mould are difficult to match with each other and a driving sheet cannot be reused in a process of electromagnetically forming a metal bipolar plate. The device is characterized in that a forming mould, a flexible mould, a driving plate, a support frame and an upper fixing plate are stacked on a lower fixing plate from bottom to top, wherein a coil is arranged in a groove on a lower end face of the support frame; two adjacent circles of leads are separated by high-pressure isolating material; high-pressure high-strength isolating materials are filled between the groove and the coil and on the surface of the coil, thereby forming a flat coil; two ends of the coil are serially connected to a capacitor bank; and the upper fixing plate and the lower fixing plate are fixedly connected through a fastening bolt. The method comprises the following steps: placing a plate blank on the forming mould and fastening the upper fixing plate and the lower fixing plate; and performing discharging forming; and taking out a formed piece, thereby acquiring the metal bipolar plate. The device and the method provided by the invention are used for forming the fuel cell metal bipolar plate.
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Description

technical field

[0001] The invention relates to a method for forming a metal bipolar plate of a fuel cell. Background technique

[0002] With its high efficiency and cleanliness, fuel cells meet the requirements of sustainable development. It can be used not only as a fixed power station, but also as a power source for mobile vehicles. It is considered to be one of the most competitive power sources to replace automobile power. one. In addition to the general characteristics of fuel cells, proton exchange membrane fuel cells also have outstanding features such as rapid and frequent start-up in greenhouses, no electrolyte loss, easy water discharge, long life, and high specific power and specific energy. Proton exchange membrane fuel cell is mainly composed of three parts: porous gas diffusion electrode, proton exchange membrane and bipolar plate. Among them, bipolar plates account for 60-80% of the total weight of the entire fuel cell stack and 30-45% of the cost of the st...

Claims

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