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Fuel cell system with calculation of liquid water volume

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、电路等方向，能够解决多个误差校正、燃料电池敏感性差、难以准确估计燃料电池中液态水等问题，达到准确估计的效果

Active Publication Date: 2013-01-23
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in the method according to the above prior art, the sensitivity of the voltage, humidity, pressure loss, etc. of the fuel cell is poor, and the operation history cannot be used to correct various errors, etc., so it is difficult to accurately estimate the concentration of liquid water in the fuel cell. quantity

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  • Fuel cell system with calculation of liquid water volume
  • Fuel cell system with calculation of liquid water volume
  • Fuel cell system with calculation of liquid water volume

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Embodiment Construction

[0024] Subsequently, embodiments of the present invention will be described.

[0025] figure 1 is a schematic diagram showing a configuration example of the fuel cell system according to the present embodiment. like figure 1 As shown, the fuel cell system 1 includes a fuel cell 10 (stack) in which a plurality of individual cells are stacked. Each individual cell consists of a membrane electrode assembly (MEA) and a pair of separators. The MEA is formed such that both surfaces of the electrolyte membrane are sandwiched by an anode electrode and a cathode electrode. The pair of spacers sandwich the MEA. One of the pair of separators has fuel gas flow channel grooves on a surface facing the cathode electrode of the MEA. Fuel gas containing hydrogen gas flows through the fuel gas flow channel groove. The fuel gas flow channel grooves of each individual cell are in fluid communication with the fuel gas flow channel grooves of other individual cells via a manifold or the like....

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Abstract

A fuel cell system includes: a fuel cell that generates electricity by reaction between reaction gases; an electricity amount calculating unit that calculates an amount of electricity generated during a voltage drop of the fuel cell from a current generated during the voltage drop; a reaction gas substance amount calculating unit that calculates an amount of substance of at least one of the reaction gases in the fuel cell on the basis of the amount of electricity generated during the voltage drop; a gas volume calculating unit that calculates a gas volume in the fuel cell on the basis of the amount of substance of the at least one of the reaction gases; and a liquid water volume calculating unit that subtracts the gas volume from a fluid flow passage volume in the fuel cell to calculate a liquid water volume in the fuel cell.

Description

technical field [0001] The present invention relates to a technique for a fuel cell system for detecting the volume of liquid water in a fuel cell. Background technique [0002] A fuel cell is, for example, formed such that a single cell is formed by sandwiching both surfaces of an electrolyte membrane by a positive electrode and a negative electrode and further sandwiching the formed membrane electrode assembly by a pair of separators, and then a plurality of single cells are placed on top of each other stacked together. A fuel gas containing hydrogen is introduced to the anode electrode of the fuel cell, and an oxidant gas such as air (oxygen) is introduced to the cathode electrode of the fuel cell to generate electricity through an electrochemical reaction between hydrogen and oxygen thereby generating water. [0003] Incidentally, during operation of the fuel cell, generated water is mainly generated in the cathode electrodes, and the water content in each cathode elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04
CPCH01M8/0438H01M8/04992H01M8/0432Y02E60/50H01M8/04753H01M8/04492H01M8/04589
Inventor 奥吉雅宏
Owner TOYOTA JIDOSHA KK