System and method for fuel cell degradation management

A fuel cell system and fuel cell technology, applied in the field of quantitative systems, can solve problems such as high degradation levels

Active Publication Date: 2015-08-19
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A relatively large current draw over an increasing period of time generally results in a relatively high level of degradation over a large fraction of the discharge situation, becoming increasingly irreversible as the current draw increases or the discharge time period increases

Method used

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  • System and method for fuel cell degradation management
  • System and method for fuel cell degradation management
  • System and method for fuel cell degradation management

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Embodiment approach

[0072] Clause 1: A fuel cell system comprising: a first power source including a fuel cell assembly operable to provide electrical power to a load; a second power source operable to provide electrical power to a load; and a fuel cell discharge controller communicatively coupled to the first power source and the second power source and is operable to reduce one type of degradation of the fuel cell by alternating power to the load between the battery pack and the second power source.

[0073] Clause 2: The fuel cell system of Clause 1, wherein the second power source includes a second fuel cell assembly.

[0074] Clause 3: The fuel cell system according to Clause 1, wherein the fuel cell assembly includes a fuel cell.

[0075] Clause 4: The fuel cell system according to clause 4, wherein the fuel cell assembly includes a plurality of fuel cells.

[0076] Clause 5: The fuel cell system of Clause 4, wherein the fuel cell discharge controller is further operable to alternately pow...

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PUM

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Abstract

A system and method for operating a fuel cell system to control an amount of degradation to the fuel cell system. The fuel cell system is operative to switch between two or more power sources to provide power to a load. The switching is designed to minimize degradation of a fuel cell of the fuel cell system.

Description

technical field [0001] The present invention relates to systems and methods for fuel cell degradation management, and more particularly, to systems and methods for operating a fuel cell system to control the amount of degradation of the fuel cell system. Background technique [0002] The efficiency of batteries and fuel cells typically decreases due to degradation imparted to the battery or fuel cell during use. Deterioration of a fuel cell or battery can be caused by various reasons. For example, degradation of a battery or fuel cell may be caused by changes in the properties of the battery or fuel cell. In another example, degradation of a battery or fuel cell can be caused by loss of active materials. In some cases, the deterioration process is accelerated at higher temperatures. [0003] Deterioration can cause the internal resistance or impedance of the battery or fuel cell to increase, thereby reducing the efficiency of the battery or fuel cell. In some application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04
CPCH01M8/04649H01M8/04992H01M8/04223H01M8/249H01M8/04559H01M8/04365H01M2250/20H01M8/04589H01M8/04955H01M16/006H01M8/04679H01M8/04228H01M8/04303H01M8/04302H01M8/04225Y02T90/40Y02E60/50Y02E60/10H01M8/04619H01M8/04664H01M8/04932H01M8/2425
Inventor 刘生义高立军约瑟夫·S·布赖特
Owner THE BOEING CO
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