Structure of cutting die stamping gas diffusion layer

Abstract

The invention provides a structure for stamping a gas diffusion layer by a cutting die, which comprises a conveying roller, the cutting die and a protective film laminating piece, and is characterized in that the conveying roller is used for conveying the gas diffusion layer to be cut to the cutting die; the cutting die is used for cutting the gas diffusion layer and transmitting the cut gas diffusion layer to the protective film laminating piece; the protective film attaching part is used for attaching a protective film to the surface of the cut gas diffusion layer to obtain a product, so that the size, appearance and broken filament length precision of the product obtained by cutting the gas diffusion layer are improved, the precision requirement of the product obtained by cutting the gas diffusion layer is met, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of gas diffusion layer processing, in particular to a structure for stamping a gas diffusion layer with a knife die. Background technique [0002] In recent years, proton exchange membrane fuel cell stacks have attracted widespread attention at home and abroad because of their clean and efficient advantages. As domestic car companies increase their investment in proton exchange membrane fuel cells, the fuel cell industry chain develops rapidly. Good porous material composition, with anisotropic porous micro-morphology in the structure, undertakes various functions such as gas transmission and distribution in the stack, electron conduction, supporting the catalytic layer, improving water management, etc., which affects the electrochemical performance of the fuel cell one of the key components. [0003] In the proton exchange membrane fuel cell, it is inevitable to cut the gas diffusion layer. Therefore, the...

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Problems solved by technology

[0003] In the proton exchange membrane fuel cell, it is inevitable to cut the gas diffusion layer. Therefore, the precision of the product obtained after cutting the gas diffusion layer is relatively high. Currently, laser burning gas diffusion layer is used for cutting the gas diffusion layer. process, the length of the filaments of the traditional laser fired gas diffusion layer is about 1mm, the size, appearance and accuracy of the filament length of the product obtained by the traditional laser fired gas diffusion layer are not ideal, and cannot meet the requirements of the gas diffusion layer after cutting. Product Accuracy Requirements

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