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Electric vehicle

An electric vehicle and voltage technology, applied in electric vehicles, circuits, fuel cells, etc., can solve the problems of difficult hydrogen operation, poisoning of reforming catalysts, and difficult to achieve, and achieve the effect of reducing energy, shortening time, and reducing manufacturing costs.

Inactive Publication Date: 2007-03-28
GS YUASA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, with regard to electric vehicles carrying hydrogen as fuel, it is pointed out as a problem in the popularization of electric vehicles that it is difficult to widely distribute and easily obtain hydrogen used for filling gas cylinders or storing hydrogen in hydrogen storage alloys.
In particular, the handling of hydrogen is not easy, and there are many problems to be solved to easily transport and store large amounts of hydrogen
If hydrogen storage alloys are used for hydrogen transportation and storage, the operation will become easier, but the known hydrogen storage alloys are all rare metals, so the price is very high, and all hydrogen storage alloys are used to form the means of hydrogen transportation and storage. method is also difficult to achieve
The problem is that no matter what method is used to transport and store hydrogen, in order to directly supply hydrogen as fuel to electric vehicles, it is necessary to re-establish a stable hydrogen circulation system
[0013] In addition, with regard to the reformer used for carrying raw fuel on electric vehicles, methanol, dimethyl ether (DME), ethanol, natural gas, propane, or gasoline are used as fuels, and the development and development of the methanol reformer with the lowest reforming temperature The fastest reforming method currently adopts steam reforming, partial oxidation reforming and combined reforming of these two methods (refer to non-patent document 1), but any reforming method, In order to produce hydrogen-containing gas, reforming must be carried out at a high temperature of 200°C or higher, and there are problems such as poisoning of the reforming catalyst, removal of CO contained in the reformed gas (hydrogen-containing gas), and partial oxidation reforming Or use the nitrogen in the air mixed with the reformed gas in the reforming process
[0022] The invention described in the above-mentioned Patent Document 10 is similar to the inventions described in the above-mentioned Patent Documents 8 and 9 in that protons generated at the anode 112 serving as the fuel electrode permeate the diaphragm 110 and hydrogen is generated at the cathode 114 serving as the counter electrode. It uses the anode of the fuel pole and the counter electrode as the cathode to apply voltage from the DC power supply 120 to electrolyze organic fuels such as methanol, and the generation of hydrogen is on the counter electrode side of the fuel pole, and no oxidant is supplied to the counter electrode, so it is consistent with the present invention. Hydrogen production equipment installed in electric vehicles is significantly different

Method used

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Examples

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Embodiment 1

[0249]An example of the case where hydrogen is produced by the hydrogen production device (open circuit condition) used in the electric vehicle according to the invention according to claim 2 of the present application is shown below.

manufacture example 1-1

[0251] The hydrogen producing cells in Example 1 (Manufacturing Examples 1-1 to 1-10) had the same structure as a typical direct methanol fuel cell.

[0252] The outline of this hydrogen production cell is shown in FIG. 2 .

[0253] That is, using a proton conductive electrolyte membrane (Nafion 115) manufactured by DuPont Co., Ltd. as an electrolyte, carbon paper (manufactured by Toray) was immersed in a 5% concentration polytetrafluoroethylene dispersion, and then fired at 360° C. to perform hydrophobic treatment. One surface thereof is coated with an air electrode catalyst slurry by mixing an air electrode catalyst (platinum-carrying carbon, manufactured by Tanaka Kikinzoku Co., Ltd.) to form a gas diffusion layer with an air electrode catalyst on the air electrode. ), PTFE fine powder and 5% Nafion solution (manufactured by Aldrich). Here, the weight ratio of the air electrode catalyst, PTEF, and Nafion is 65%:15%:20%. The amount of catalyst in the air electrode produced...

manufacture example 1-2

[0266] Use the same hydrogen production cell as in Hydrogen Production Example 1-1, and then change the air flow rate under the condition that the cell temperature is 70°C and the flow rate of methanol aqueous solution (fuel) with a concentration of 1M is 2, 8, and 15 ml / min, as shown in Fig. 5 The relationship between the fuel flow rate, the air flow rate, the hydrogen generation rate, and the open circuit voltage of the battery at this time is shown.

[0267] It can be seen that the hydrogen generation rate is high when the fuel flow rate is small.

[0268] The results of FIG. 5 are shown in FIG. 6 as a relationship between the open circuit voltage and the hydrogen generation rate.

[0269] From this, it can be seen that the hydrogen generation rate under each condition depends on the open circuit voltage. In addition, at any of the fuel flow rates, as in Hydrogen Production Example 1-1, a peak of the hydrogen production rate was observed around 450 mV.

[0270] Furthermor...

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Abstract

An electric car which can easily supply hydrogen to a fuel cell and mounts a hydrogen producing device capable of producing a hydrogen-containing gas at low temperature. The electric car comprises at least a fuel cell (30) for supplying hydrogen and an oxidizer to generate power, a hydrogen producing device (10) for producing a hydrogen-containing gas for supplying to the fuel cell, and a motor driven by electricity produced in the fuel cell, characterized in that the hydrogen producing device, which decomposes an organic-matter-containing fuel to produce a hydrogen-containing gas, comprises a diaphragm (11), a fuel pole (12) provided on one surface of the diaphragm, a means (16) of supplying to the fuel pole a fuel containing organic matters and water, an oxidizing pole (14) provided on the other surface of the diaphragm, a means (17) of supplying an oxidizer to the oxidizing pole, and a means of producing and retrieving a hydrogen-containing gas from a fuel pole side.

Description

technical field [0001] The present invention relates to an electric vehicle equipped with a hydrogen production device for supplying hydrogen to a fuel cell. Background technique [0002] At present, as countermeasures against environmental problems, resource problems, etc., it is becoming more and more important, and the development of electric vehicles as one of the countermeasures is actively progressing. Among them, various developments are underway for electric vehicles equipped with a fuel cell as a power source for obtaining driving force, and devices for carrying hydrogen, which is a fuel for generating electricity using the fuel cell, or a raw fuel for generating hydrogen. [0003] Electric vehicles carrying hydrogen carry hydrogen by filling hydrogen as compressed gas in a high-pressure gas cylinder or storing hydrogen in a hydrogen-absorbing alloy (for example, refer to Patent Documents 1 to 3). In such an electric vehicle loaded with hydrogen, since the fuel gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18C01B3/32C25B1/02C25B5/00H01M8/00H01M8/06H01M8/10H01M8/0656H01M8/0668
CPCY02E60/522Y02E60/566Y02E60/50
Inventor 奥山良一山本好浩元井昌司芦田胜二
Owner GS YUASA CORP
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