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Fuel cell

A fuel cell and fuel technology, applied in the direction of fuel cells, fuel cell additives, fuel cell components, etc., can solve problems such as uneven distribution of supply, large fuel supply, and power generation changes

Inactive Publication Date: 2008-07-16
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the amount of fuel supplied near the fuel supply port is large and decreases with distance from the fuel supply port, resulting in an uneven distribution of the supply amount
This uneven distribution of supply causes variations in power generation

Method used

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Embodiment Construction

[0048] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0049] figure 1 is a conceptual cross-sectional view showing the basic constitution of a fuel cell according to an embodiment of the present invention.

[0050] More specifically, the fuel cell of the present embodiment has a structure in which a fuel supply section 2, a power generation section 4, and an oxygen introduction section 6 are stacked in this order.

[0051] The fuel supply part 2 supplies methanol or other fuels to the power generation part 4 , and a fuel supply port 10 is provided on the bottom surface or the side surface of the fuel supply part 2 . A tank or the like filled with methanol or other liquid fuel is connected to the fuel supply port 10 through which the liquid fuel is supplied to the fuel supply portion 2 . Note that fuels are not limited to liquids, for example, solid fuels can also be used by sublimation.

[0052] On the other hand, t...

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Abstract

A fuel cell comprising a fuel supply unit having a diffusion unit for diffusing fuel supplied from a fuel supply port and an opening plate having a plurality of openings for ejecting the fuel from the diffusion unit, an oxygen introduction unit for introducing oxygen from the outside, and a power generation unit for generating power by means of the fuel supplied from the fuel supply unit and oxygen supplied from the oxygen introduction unit, characterized in that the opening ratio of the plurality of openings provided in the opening plate has an almost radiating distribution in which it is smaller near the fuel supply port and gradually increases as it is away from the fuel supply port. Accordingly, a spontaneous respiration type fuel cell that can supply fuel uniformly and is high in power generation efficiency is provided.

Description

technical field [0001] The present invention relates to a fuel cell, particularly a fuel cell including a power generating portion that supplies fuel through openings in a current collector. Background technique [0002] Fuel cells using methanol or the like as fuel are gradually being put into practical use as power sources for small electronic devices such as notebook personal computers, small audio players, and wireless earphones. A methanol fuel cell (DMFC: Direct Methanol Fuel Cell) is a spontaneous breathing type fuel cell in which methanol as a fuel is spontaneously transported to a fuel electrode by a capillary phenomenon and a diffusion phenomenon. Activated hydrogen elements (hereinafter referred to as protons) and electrons generated at the fuel electrode then electrochemically react with oxygen from the air side through the electrolyte membrane to generate electricity (for example, Patent Document 1). [0003] Another fuel cell using a current collector formed o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/10
CPCH01M8/1011H01M8/0258Y02E60/523H01M8/04186H01M8/04201H01M8/023Y02E60/50H01M8/2483H01M8/0263
Inventor 东真也中川泰忠寺田贵洋吉田勇一
Owner KK TOSHIBA
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