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Fuel cell system and method for estimating output characteristic of fuel cell

A fuel cell system and fuel cell technology, applied in the direction of fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problems of not obtaining high estimation accuracy, and achieve the effect of improving estimation accuracy

Inactive Publication Date: 2009-02-25
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, high estimation accuracy will not necessarily be obtained

Method used

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  • Fuel cell system and method for estimating output characteristic of fuel cell
  • Fuel cell system and method for estimating output characteristic of fuel cell
  • Fuel cell system and method for estimating output characteristic of fuel cell

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Embodiment Construction

[0034]Hereinafter, a fuel cell system according to the best mode for carrying out the present invention (hereinafter referred to as "embodiment") will be described with reference to the drawings. The structures of these embodiments are exemplary, and the present invention is not limited to the structures of these embodiments.

[0035] figure 1 is a system configuration diagram of the fuel cell system according to the first embodiment of the present invention. The fuel cell system includes: a fuel cell body 1, which includes a battery pack in which a plurality of unit cells are stacked; an air compressor 2, which supplies air to an air electrode terminal in the fuel cell body 1 through an air supply passage L1; an air flow meter 3 ( It can be regarded as a flow rate measuring unit), which measures the flow rate of the air supplied from the air compressor 2 to the fuel cell body 1; The air pressure of the air electrode end of the discharge passage L2 on the electrode end; the ...

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PUM

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Abstract

A fuel cell system according to the invention includes: a detecting unit (6, 12) that detects an operation parameter of the fuel cell; an internal resistance estimating unit (20) that sets the internal resistance of the fuel cell a basic internal resistance; a flow rate measuring unit (3) that measures the airflow rate; a pressure measuring unit (4) that measures the air pressure; a determining unit (20) that determines the IR-free output characteristic of the fuel cell; a setting unit (20) that sets the basic output characteristic of the fuel cell; an output current measuring unit (8) that measures the output current of the fuel cell; an output voltage measuring unit (9) that measures the output voltage of the fuel cell; and a calculating unit (20) that corrects the basic output characteristic using the output current and the output voltage.

Description

technical field [0001] The present invention relates to fuel cell systems and methods of estimating fuel cell output characteristics. Background technique [0002] In order to improve the power generation efficiency of the fuel cell, a control method generally performed is to determine the fuel cell output based on the current-voltage characteristic (hereinafter referred to as "output characteristic") of the fuel cell. However, the current-voltage characteristics vary depending on the state of the fuel cell or over time. Therefore, a related technique is proposed in, for example, JP-A-2002-231295, in which the output characteristics of the fuel cell are estimated from the temperature of the fuel cell, the hydrogen pressure, etc., and the output of the fuel cell is controlled using the estimated output characteristics to efficiently Operate fuel cells. [0003] However, in the related art described above, the output characteristics of the fuel cell are derived only from the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04B60L11/18
CPCY02T90/34H01M8/04395H01M8/04634H01M8/04007H01M8/04089Y02E60/50H01M8/0432H01M8/04589H01M8/04559H01M8/04492B60L11/1881H01M8/04126B60L58/30Y02T90/40G01R27/00H01M8/04
Inventor 渡边修夫
Owner TOYOTA JIDOSHA KK