Unlock instant, AI-driven research and patent intelligence for your innovation.

Solid polymer fuel cell

A solid polymer, fuel cell technology, applied in the direction of solid electrolyte fuel cells, fuel cells, fuel cell components, etc., can solve the problems of reduced battery performance, deterioration of temperature distribution, etc., and achieve the effect of preventing flow

Inactive Publication Date: 2007-02-28
MITSUBISHI ELECTRIC CORP
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the gas flowing in this passage passes irrespective of the cell reaction, the amount of gas supplied to the oxidant electrode and the fuel electrode is reduced, and there is a problem that the battery performance is lowered or the temperature distribution in the cell element surface is deteriorated.

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
  • Solid polymer fuel cell
  • Solid polymer fuel cell
  • Solid polymer fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0030] FIG. 1 is a partial sectional view of a solid polymer fuel cell according to Embodiment 1 of the present invention. FIG. 2 is a plan view of a separator according to Embodiment 1. FIG. Fig. 3 is a cross-sectional view along line A-A of Fig. 2 . FIG. 4 is a view showing a sealing material application area opposite to the separator of FIG. 2 .

[0031] As shown in FIG. 1 , a solid polymer fuel cell 1 according to Embodiment 1 of the present invention includes a membrane electrode assembly 7 including, as shown in FIG. 1 : an electrolyte membrane 2 composed of an ion exchange membrane; The fuel electrode 4 formed on one side of the catalyst layer 3 arranged so that the layer 3 is connected to the central part of one surface of the electrolyte membrane 2; the catalyst layer 5 arranged so that the catalyst layer 5 is connected to the central part of the other surface of the electrolyte membrane 2 Oxidant electrode 6 formed on one side.

[0032] In addition, the solid poly...

Embodiment approach 2

[0058] 5 is a plan view of a fuel gas separator according to Embodiment 2 of the present invention.

[0059] The polymer electrolyte fuel cell according to Embodiment 2 of the present invention is the same except that the fuel gas separator 9B is different from the polymer electrolyte fuel cell 1 according to Embodiment 1, so the same parts are given the same components. symbol, and its description is omitted.

[0060] As shown in FIG. 5 , the separator 9B for fuel gas according to the second embodiment differs from the separator 9 for fuel gas according to the first embodiment in the arrangement of the recesses 23 , but is the same except for that, so the same parts are given same symbols, and their descriptions are omitted.

[0061] In the fuel gas separator 9B, a plurality of independent recesses 23 are arranged in parallel in multiple rows, and are arranged in such a manner that the recesses 23 in adjacent rows are alternately arranged, and the fuel gas flow path 8 is sur...

Embodiment approach 3

[0067] 6 is a plan view of a separator for fuel gas according to Embodiment 3 of the present invention.

[0068] The polymer electrolyte fuel cell according to Embodiment 3 of the present invention is the same except that the fuel gas separator 9C is different from the polymer electrolyte fuel cell 1 of Embodiment 1, so the same parts are given the same components. symbol, and its description is omitted.

[0069] As shown in FIG. 6, the separator 9C for fuel gas according to Embodiment 3 is the same as the separator 9 for fuel gas according to Embodiment 1 except that the position where the concave portion 23 is provided is different. , and its description is omitted.

[0070] In the separator plate 9C for fuel gas, the recessed portion 23 is not provided at a portion where a pressure difference occurs between the two parallel fuel gas passages 8 .

[0071] Since such a polymer electrolyte fuel cell does not provide the recess 23 near the portion of the fuel gas flow path 8 ...

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 polymer solid fuel cell comprises cells (12), each with a membrane transition unit (7) with an electrolyte membrane (2), fuel (4) and oxidant (6) electrodes, two separators (9, 11) and a seal (30,35). The membrane transition unit is formed by sandwiching the electrolyte membrane surfaces with the electrodes and is itself sandwiched by the separators, that have central gas flow channels (8, 10). The sealing surfaces (27, 28) of the separators have independent recesses (23, 26) surrounding the gas flow channels.

Description

technical field [0001] The invention relates to a sealing structure of a solid polymer fuel cell. Background technique [0002] In conventional solid polymer fuel cells, in order to seal the oxidant electrode and the fuel electrode from the outside, a sealing portion is provided between the outer edge portions of the portion that surrounds the opposing separator and the portion facing the oxidant electrode and the fuel electrode, and inside the sealing portion The electrolyte membrane is inserted in the peripheral part. Furthermore, when a connection load is applied, the seal portion in the region where the electrolyte membrane is sandwiched between the separators is excessively compressed, and the creep increases and the creep speed increases. As a result, the required surface pressure cannot be secured between the oxidant electrode and the fuel electrode, and a problem of so-called degradation of battery performance occurs. [0003] Therefore, by forming the sealing mate...

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): H01M8/02H01M2/08H01M8/10
CPCH01M8/04067H01M8/0271H01M2008/1095H01M8/0267H01M8/2405Y02E60/50H01M8/241H01M8/2483H01M8/2457H01M8/0263H01M8/0258H01M8/0276
Inventor 八木哲也冈田达典
Owner MITSUBISHI ELECTRIC CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com