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Fuel container for fuel cell

A fuel cell and fuel container technology, applied in the direction of fuel cells, fuel cell additives, solid electrolyte fuel cells, etc., can solve the problems of fuel storage room volume reduction, etc., to reduce the possibility, improve sliding, and defective rate Reduced effect

Inactive Publication Date: 2008-07-09
TOKAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] When the container body is thickened to increase strength to withstand high pressure, the volume of the fuel storage chamber for storing liquid fuel decreases.

Method used

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  • Fuel container for fuel cell
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  • Fuel container for fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] Repeated durability tests were performed using the inner container 24 , the partition member 3 (main body member 31 , O-ring 32 ) and the valve 4 described in the above embodiment. The inner container 24 and the main body member 31 were PP molded products, and the O-ring used had a structure in which a p-xylene dimer covering layer with a film thickness of 1 μm was formed on the outer surface of the EPDM molded product.

[0131] 1) First, in the state where the partition member 3 is located at the uppermost part of the inner container 24, a valve 4 is installed in the through hole 242, and 2 mL of pure methanol is filled into the inner container 24 through the valve 4, and then, the partition member 3 is placed downward. Push to expel the filled pure methanol through the valve. In order to remove the gas in the inner container 24, this operation is repeated twice.

[0132] 2) Next, 6 ml of a 30% by weight methanol aqueous solution containing 30% by weight of methanol a...

Embodiment 2

[0142] The aging test was carried out using the same apparatus as in Example 1 above. The test method was to perform the same operations as (1) to (2) of the above-mentioned Example 1, and then place the above-mentioned device in an environment of 65° C., and perform the operation of (3) after a predetermined time elapsed.

[0143] 5) after the measured value, install valve 4 rapidly, fill described 30% by weight aqueous methanol solution in inner container 24 through valve 4, return to the state after (2) action of above-mentioned embodiment 1, then, put above-mentioned device again Place it in an environment of 65°C, and carry out the operation of (3) after the predetermined time has elapsed. Then, the operation of (5) above was repeated, and the change in the sliding friction force was measured when the standing time elapsed. In this test, the standing time refers to the cumulative time of standing in an environment of 65° C., and does not include the time required for mea...

Embodiment 3

[0151] The seal failure test of the O-ring was performed using the same apparatus as in Example 1 above. The test method is to carry out the same operation as (1)-(2) of the above-mentioned embodiment 1, and then, make the filled 30% by weight methanol aqueous solution flow out from the container for 30 minutes through the valve 4 at an outflow rate of 6mL / 60-120min . Then, the number of containers in which gas was mixed due to poor sealing of the O-ring was counted.

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Abstract

The present invention provides a fuel container for fuel cell in which failure rate is lowered while increasing the number of times of repeated use and the bulk ratio of the fuel by securing positive slidability, sufficient durability and adhesion of a partition wall member. A fuel container (1) for fuel cell comprises a container body (2) having a connection opening (23a) to be connected with a fuel cell or a pressure regulator and containing liquid fuel F to be supplied to the fuel cell and an extrusion means G for pushing out the liquid fuel F. A partition wall member (3) for sectioning the interior of the container body (2) into a fuel storage chamber (11) for containing the liquid fuel F, and a chamber (12) for containing the extrusion means G is arranged slidably in the container body (2). Furthermore, a valve (4) for releasing or interrupting conduction of the liquid fuel F is provided at the supply opening (23a). Sliding frictional force occurring on the sliding surface of the container body (2) and the partition wall member (3) is 10 N or less.

Description

technical field [0001] The present invention relates to a fuel container for a fuel cell that accommodates liquid fuel to be supplied to a fuel cell such as a direct methanol fuel cell (hereinafter referred to as DMFC (Direct Methanol Fuel Cell)), and supplies the fuel to the fuel cell. Relates to a separating member that separates liquid fuel from the expulsion medium through which the liquid fuel is expelled. Background technique [0002] In recent years, studies have been conducted on the use of fuel cells as small power sources for small portable terminals such as notebook computers and PDAs (Personal Data Assistants). Furthermore, a fuel container (for example, a fuel cartridge) has been proposed as a device for supplying fuel to the fuel cell. [0003] As the fuel filled in the fuel container, it has been proposed to use a liquid fuel in which methanol and pure water are mixed or ethanol and pure water are mixed. [0004] On the other hand, for a small portable termi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/10
CPCH01M8/1011H01M8/1009H01M8/04208Y02E60/50H01M8/04186B65B3/00H01M8/04H01M8/10
Inventor 中村保昭臼井秀人小见山聪广富光男
Owner TOKAI
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