Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Unit cell structure comprising composite-gasket for fuel cell stack

A fuel cell stack and unit cell technology, which is applied to fuel cell components, fuel cells, fuel cell grouping, etc., can solve problems such as reducing surface pressure and sealing performance, poor installability, and reducing fuel cell functions.

Inactive Publication Date: 2005-09-28
HYUNDAI MOTOR CO LTD
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microvoids cause capillary phenomena that allow coolant in the manifold to enter chemical reaction areas in the fuel cell, contaminating the MEA and drastically reducing fuel cell functionality
Moreover, when the gasket moves in the groove of the separator, the gasket in double contact of the two surfaces of the MEA is misaligned, thereby reducing the surface pressure and sealing performance
[0007] Therefore, the gasket used in the conventional unit cell for the fuel cell stack has the disadvantage that the ethylene glycol for preventing the operating temperature rise of the separator penetrates into the inside of the separator, and requires more time to install

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Unit cell structure comprising composite-gasket for fuel cell stack
  • Unit cell structure comprising composite-gasket for fuel cell stack
  • Unit cell structure comprising composite-gasket for fuel cell stack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0024] like Figure 1-3 As shown, in the assembly of separator 10 and MEA 11 together with composite gasket 12 , the boundaries of separator 10 , MEA 11 and gasket 12 are aligned by the two rows of shims 14 of gasket 12 . That is, the separators 10 are disposed on opposite sides of the MEA 11 with the gasket 12 disposed between each separator 10 and the MEA 11 . When the separator 10, the MEA11 and the gasket 12 are assembled into one, the two rows of gaskets 14 of the gasket 12 are finally pressed, and the outer gaskets of the two rows of gaskets 14 reach a position that completely surrounds the MEA11, so that its boundary is in line with the gasket 12. border alignment. This is possible because the position at which the gasket 12 is attached to the partition 10 is determined from the calculation of the amount of deformation of the ga...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A composite gasket for fuel cell stack comprises two rows of beads and a support which can improve mountability and sealing property and reduce the assembly pressure by using materials having low hardness with reduced volume. This invention also relates to a structure for the assembly of the composite gasket.

Description

technical field [0001] The present invention relates to composite gaskets for fuel cell stacks. Background technique [0002] A proton exchange membrane fuel cell (PEMFC) stack, widely used in automobiles and mobile phones, has a specific structure in which a membrane electrode assembly (MEA) is interposed between a proton electrode and an oxygen electrode. This structure is repeated to finally obtain a laminated structure. [0003] The number of separators and MEAs is directly related to the function of the fuel cell and varies widely with the required output. In particular, PEMFC stacks can have as many as several hundred such structures. Therefore, two gaskets installed in each bulkhead must be easily installed so that the bulkhead and the MEA can be efficiently assembled. Also, it is desirable for the gasket to be lightweight and compact so that stress is kept to a minimum during assembly. In addition, gaskets are needed to prevent impurities from entering the stack ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/10H01M8/00H01M8/02H01M8/10H01M8/24
CPCH01M8/1004H01M8/0297Y02E60/50H01M8/0276H01M8/0284H01M8/0273H04M1/0264H04M1/0227H04N23/51
Inventor 曺圭择林泰源李起春金守焕李钟贤崔树显
Owner HYUNDAI MOTOR CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com