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Method for processing micro-channels on surface of metal bipolar plate by adopting plate electrode in electrolytic transfer, as well as plate electrode thereof

A metal bipolar plate and flat electrode technology, used in electric machining equipment, electrochemical machining equipment, machining electrodes, etc., can solve the problem of being unsuitable for mass production, shorten the machining gap, ensure tight bonding, and smooth the flow field Effect

Inactive Publication Date: 2013-07-03
NANTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this traditional mask electrolytic machining technology, the workpiece needs to be processed by photolithography before electrolytic machining, and the surface needs to be degummed after electrolytic machining. Therefore, this process is not suitable for mass production. When it rises to engineering practice limitations

Method used

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  • Method for processing micro-channels on surface of metal bipolar plate by adopting plate electrode in electrolytic transfer, as well as plate electrode thereof
  • Method for processing micro-channels on surface of metal bipolar plate by adopting plate electrode in electrolytic transfer, as well as plate electrode thereof
  • Method for processing micro-channels on surface of metal bipolar plate by adopting plate electrode in electrolytic transfer, as well as plate electrode thereof

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Embodiment Construction

[0027] Combine below figure 1 , figure 2 and image 3 Specific description implements the present invention:

[0028] 1) The flat tool electrode (4) used in the method of electrolytically transferring the microfluidic channel on the surface of the metal bipolar plate by using the flat electrode is characterized in that: the flat tool electrode is used as the tool cathode in the electrolytic processing and consists of three parts , followed by photolithographic base metal (1), photoresist (2) and filling metal (3); the photolithographic base metal (1) is the carrier of photoresist, on the surface of photolithographic base metal (1) Coated with photoresist (2), the exposure light source (9) passes through the mask plate (9) to irradiate the photoresist for development, and the photoresist is engraved with a hollow flow channel, and then through the electroforming process, the The hollow runner is filled with filler metal (3);

[0029]2) Place the flat tool electrode (4) and...

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Abstract

The invention discloses a method for processing micro-channels on the surface of a metal bipolar plate by adopting a plate electrode in electrolytic transfer, and belongs to the field of electrochemical machining. The method is characterized by comprising the following steps: (a), filling a hollowed-out photoresist channel with metal, and producing a plate tool negative electrode (4); (b) fixing the plate tool negative electrode (4) with a workpiece positive electrode (6) and reserving a small gap; (c), connecting the plate tool negative electrode (4) and the workpiece positive electrode (6) with the anode and the cathode of a power supply (7) respectively; (d) introducing an electrolyte (5) between the plate tool negative electrode (4) and the workpiece positive electrode (6); and (e), connecting the power supply (7) for electrochemical machining. With the adoption of the method and the plate electrode thereof, the binding force between an insulating layer and a base is enhanced, tight combination between the insulating layer and the base is guaranteed, and the utilization rate of tool electrodes is improved; besides, the adoption of the plate electrode can guarantee the timely update of the electrolyte in a processing area, and the locality of the electrolytic processing is improved effectively.

Description

technical field [0001] The invention discloses a method for processing a microchannel on the surface of a metal bipolar plate by electrolytic transfer printing of a flat electrode, belonging to the technical field of electrolytic processing. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a power generation device that converts chemical energy directly into electrical energy, using hydrogen or purified reformed gas as fuel, and air or pure oxygen as oxidant. As an ideal conversion device for hydrogen energy, PEMFC has attracted extensive attention from research institutions in various countries and major automobile companies due to its high specific power, high conversion efficiency, and low environment. Since the 1990s, PEMFC technology has developed rapidly and is now on the eve of commercialization. The bipolar plate is one of the core components of PEMFC. It has the functions of isolating and evenly distributing the reaction gas, collecting a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H3/00B23H3/04
Inventor 钱双庆周一丹倪红军黄明宇
Owner NANTONG UNIVERSITY
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