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Fuel cell system

一种燃料电池系统、燃料电池的技术，应用在燃料电池、燃料电池助剂、运输燃料电池技术等方向，能够解决不进行怠速停止功能等问题

Active Publication Date: 2009-04-29
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is judged that there is performance degradation despite falling under the prescribed conditions, the conventional fuel cell system does not perform the idle stop function (that is, stops the fuel cell from generating electric power), and maintains the power generation of the fuel cell

Method used

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Embodiment Construction

[0012] The aforementioned conventional fuel cell system has a problem that impurities (for example, nitrogen concentration) tend to leak from the oxidant electrode side and accumulate on the fuel electrode side during the idle stop state. The impurities are discharged according to predetermined time intervals or whenever the accumulated value of power generation reaches a predetermined value. Therefore, when a conventional fuel cell system resumes normal operation from an idle stop state, there may be degradation in performance.

[0013] In contrast, embodiments of the present invention provide a fuel cell system capable of preventing performance degradation when the system resumes normal operation from an idle stop state. According to one embodiment, there is provided a fuel cell system in which the discharge of the anode gas and the fuel gas and Oxidant gas cessation.

[0014] According to the embodiments of the present invention, impurities leaked from the oxidant electro...

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Abstract

A fuel cell system and method of controlling a fuel cell system capable of preventing deterioration in performance when the system reinitiates a normal operation from an idle stop state. For a predetermined time after reinitiating the supply of fuel gas and oxidant gas from the idle stop state, discharge of off-gas occurs and the cessation of fuel gas and oxidant gas supply is prohibited.

Description

technical field [0001] The present invention generally relates to a fuel cell system. Background of the invention [0002] A conventional fuel cell system generally includes a fuel cell and a secondary battery. A conventional fuel cell system also has an idle stop function, in which the fuel cell stops generating electric power under prescribed conditions, and only supplies electric power to a load from a secondary battery. As shown in Japanese Patent Application Laid-Open No. 2005-26054, when the fuel cell starts generating electric power again after performing the idle stop function, it is judged whether there is any deterioration in the performance of the fuel cell (for example, a response delay in electric power generation or a drop in battery voltage) . If it is judged that there is performance degradation despite falling under prescribed conditions, the conventional fuel cell system does not perform the idle stop function (ie, stops the fuel cell from generating elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/00
CPCY02T90/32H01M8/04582H01M2250/20H01M8/04343H01M8/04328H01M8/04723H01M8/04552H01M8/04335Y02E60/50H01M8/04097H01M8/04388H01M16/006H01M8/04761H01M8/04395H01M2008/1095H01M8/0438H01M8/04223H01M8/04358H01M8/241H01M8/2457Y02E60/10Y02T90/40H01M8/04H01M8/04228H01M8/04303
Inventor 米仓健二五士岚仁上原哲也
Owner NISSAN MOTOR CO LTD
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