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Fuel cell system and control method for fuel cell system

一种燃料电池系统、燃料电池的技术，应用在电池/电池的牵引、燃料电池、燃料电池助剂等方向，能够解决阳极电极氧化劣化等问题

Active Publication Date: 2018-08-03
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the oxygen concentration in the anode flow path is high and the fuel cell is not sufficiently cooled, the anode electrode of the fuel cell may be oxidized and deteriorated

Method used

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  • Fuel cell system and control method for fuel cell system
  • Fuel cell system and control method for fuel cell system
  • Fuel cell system and control method for fuel cell system

Examples

Experimental program
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no. 1 approach ＞

[0019] figure 1 It is a schematic configuration diagram showing the main configuration of the solid oxide fuel cell system 100 according to the first embodiment.

[0020] Such as figure 1 As shown, the fuel cell system 100 is a solid oxide fuel cell system including a solid oxide fuel cell stack 10 that receives supply of an anode gas and a cathode gas to generate power. The fuel cell system 100 constitutes, for example, a part of a power supply system for an electric vehicle.

[0021] The fuel cell stack 10 is a stacked cell in which a plurality of solid oxide fuel cells (SOFC: Solid Oxide Fuel Cell) are stacked. A solid oxide fuel cell (fuel cell) is constituted by, for example, sandwiching an electrolyte layer formed of a solid oxide such as ceramics between an anode electrode supplied with an anode gas and a cathode electrode supplied with a cathode gas. For example, the anode gas is a gas containing hydrogen and hydrocarbons, and the cathode gas is a gas containing oxy...

no. 2 approach ＞

[0113] refer to Figure 6 ~ Figure 8 A fuel cell system 100 according to a second embodiment of the present invention will be described. In addition, in the following description, the same code|symbol is attached|subjected to the same component as 1st Embodiment, and unless necessary, the description is abbreviate|omitted.

[0114] The fuel cell system 100 of the second embodiment is substantially the same as the fuel cell system of the first embodiment, but differs from the first embodiment in that a temperature sensor 86 is provided and in the content of the system stop control executed by the control unit 80 . In addition, the fuel cell system 100 of the present embodiment may not include the oxygen concentration sensor 85 .

[0115] Such as Figure 6 As shown, the fuel cell system 100 of the second embodiment includes a temperature sensor 86 in the anode supply passage 21 between the reformer 28 and the fuel cell stack 10 . The temperature sensor 86 detects or estimates...

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PUM

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Abstract

This fuel cell system comprises a solid oxide fuel cell that receives a supply of an anode gas and a supply of a cathode gas, and generates electricity. The fuel cell system comprises: an anode exhaust passage through which an anode off-gas flows, said anode off-gas being expelled from the fuel cell; a cathode exhaust passage through which a cathode off-gas flows, said cathode off-gas being expelled from the fuel cell; and a junction part where the anode exhaust passage and the cathode exhaust passage converge. The fuel cell system is further provided with a gas supply part that, when the system is stopped, supplies fuel gas into the anode exhaust passage, said fuel gas having used fuel that is stored in a fuel tank.

Description

technical field [0001] The present invention relates to a fuel cell system including a solid oxide fuel cell that receives supply of an anode gas and a cathode gas to generate power, and a control method for the fuel cell system. Background technique [0002] In recent years, due to increased interest in global environmental issues, the use of various fuel cells in automobiles has been studied. For example, in the case of a solid oxide fuel cell with high power generation efficiency, power is generated by an electrochemical reaction between an anode gas containing hydrogen and hydrocarbons and a cathode gas containing oxygen. [0003] JP2005-179081A discloses a fuel cell system including: an anode exhaust passage through which an anode exhaust gas discharged from a solid oxide fuel cell flows; a cathode exhaust passage through which a cathode exhaust gas discharged from a solid oxide fuel cell flows. , A confluence portion where these passages merge. The anode off-gas and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04228H01M8/04H01M8/04303H01M8/12B60L11/18C01B3/32
CPCH01M8/04228H01M8/04955H01M8/0432H01M8/04328H01M8/04455H01M8/04731H01M8/04761H01M8/04776H01M8/1231H01M8/04231H01M8/04753C01B3/323C01B2203/0233C01B2203/066C01B2203/0827C01B2203/1229C01B2203/1619C01B2203/1695H01M8/04303B60L50/75Y02T90/40Y02T10/70Y02E60/50H01M8/04067H01M8/04388H01M8/04462H01M8/04537H01M8/12H01M2008/1293
Inventor 矢岛健太郎柳泽政成前岛晋
Owner NISSAN MOTOR CO LTD
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