Injection molding method of metal bipolar plate for fuel cell and its seal
A metal bipolar plate and fuel cell technology, applied to fuel cell parts, fuel cells, electrical components, etc., can solve the problems of difficult operation, high cost, and high precision requirements
Active Publication Date: 2022-07-29
WUHAN TROOWIN POWER SYST TECH
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Problems solved by technology
like figure 1 As shown, in the glue injection process, under the action of pressure, the fluid sealant may flow between the cathode plate and the anode plate of the metal bipolar plate through the penetration hole, destroying the pre-assembled cathode plate and the anode plate. The structure formed by the anode plate even results in separation of the regions where the cathode plate and the anode plate are partially bonded or welded together
The existing solution to the above problem is to weld or bond the cathode and anode plates at the edge of the penetration hole, so that the fluid sealant cannot flow into the cathode plate and the anode plate through the penetration hole. between
However, the process of welding or bonding the edges of the penetration holes of the cathode and anode plates is complicated, requires high precision, is difficult to operate, and is expensive
Method used
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[0040] The following description is provided to enable those of ordinary skill in the art to practice the present invention. Other obvious alternatives, modifications and variations will occur to those of ordinary skill in the art. Accordingly, the scope of protection of the present invention should not be limited by the exemplary embodiments described herein.
[0041] It should be understood by those of ordinary skill in the art that, unless otherwise specified herein, the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in In other embodiments, the number of the elements may be multiple.
[0042] It will be understood by those of ordinary skill in the art that the terms "portrait", "landscape", "upper", "lower", "front", "rear", "left", "right", "vertical", unless otherwise specified herein. "," "horizontal", "top", "bottom", "inside", "outside", etc. refer to the orientation or positio...
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The present invention provides an injection molding method for a metal bipolar plate for a fuel cell and a seal for the metal bipolar plate for a fuel cell, wherein the metal bipolar plate for a fuel cell of the present invention is based on cathodes with different sizes The plate and the anode plate realize the injection molding of the sealant, which solves the technical problem of abnormal deformation of the metal bipolar plate that may be caused by the sealing member of the metal bipolar plate during the injection molding process.
Description
technical field [0001] The present invention relates to the technical field of fuel cells, in particular to a metal bipolar plate for fuel cells. The present invention still further relates to an injection molding method for a sealing member of a metal bipolar plate of a fuel cell. Background technique [0002] A fuel cell is a power generation device that converts chemical energy in a fuel into electrical energy through an electrochemical reaction, and includes a plurality of stacked fuel cell cells, wherein each fuel cell cell includes a cathode plate, an anode plate, and a clamp. A membrane electrode assembly is provided between the cathode plate and the anode plate. In order to ensure the normal operation of the fuel cell, the anode flow field formed between the anode plate and the membrane electrode assembly and the cathode flow field formed between the cathode plate and the membrane electrode assembly should be relative to The external environment is sealed to preven...
Claims
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IPC IPC(8): H01M8/0247H01M8/0286B29C45/14
CPCH01M8/0286H01M8/0247B29C45/14Y02P70/50
Inventor 李骁龙红涛
Owner WUHAN TROOWIN POWER SYST TECH