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Systems and methods for enhancing fuel cell vehicle startup

A fuel cell system, fuel cell technology, applied in fuel cells, fuel cell additives, battery/fuel cell control devices, etc.

Active Publication Date: 2014-05-14
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This growth can prevent HOR even after sufficient hydrogen is present in the anode compartment, and thus can lead to undesired delays during cold starts

Method used

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  • Systems and methods for enhancing fuel cell vehicle startup
  • Systems and methods for enhancing fuel cell vehicle startup
  • Systems and methods for enhancing fuel cell vehicle startup

Examples

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Embodiment Construction

[0052] Detailed descriptions of devices, systems and methods according to various embodiments and implementations of the invention are provided below. While several examples and implementations are described, it should be understood that this disclosure is not limited to any particular example and / or implementation disclosed, but instead encompasses numerous alternatives, modifications, and equivalents. Furthermore, although numerous specific details are set forth in the following description in order to provide a thorough understanding of the embodiments disclosed herein, some embodiments may be practiced without some or all of these details. Similarly, some embodiments may be practiced without some or all of the steps disclosed below. Also, for the sake of clarity, certain technical material that is known in the related technical fields has not been described in detail to avoid unnecessarily obscuring the disclosure.

[0053] Embodiments of the present disclosure are best u...

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Abstract

The present invention relates to methods and systems for enhancing the performance of fuel cells in fuel cell vehicles. Some embodiments comprise a current control module for controlling the application of a load to the fuel cell and a voltage monitoring module for monitoring one or more voltages within the fuel cell. The current control module may be configured to apply a delay period before applying a load to the fuel cell after the fuel cell has reached an open circuit voltage. In other embodiments, a fixed delay period may be applied before applying a load to the fuel cell after the fuel cell has reached an open circuit voltage or, for example, an incremental set of delay periods that increase as measured temperature decreases.

Description

technical field [0001] The present disclosure relates to methods and systems for enhancing the performance of fuel cells. More specifically, but not exclusively, the present disclosure relates to methods and systems for improving the starting stability of fuel cells at cold temperatures. Background technique [0002] A fuel cell is a device that generates electricity through an electrochemical process without the combustion of fuel. Hydrogen is typically combined electrochemically with oxygen to produce electricity. The only byproducts of this process are water vapor and heat. Thus, fuel cell powered electric vehicles reduce emissions and the need for conventional fossil fuels by eliminating the internal combustion engine or operating the engine only at certain times in the case of hybrid electric vehicles. [0003] However, it has been found that when the anode and cathode are exposed to air prior to start-up, the temperature response to determine the fuel cell voltage m...

Claims

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Application Information

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IPC IPC(8): H01M8/04B60L11/18
CPCH01M8/04365H01M8/04559H01M8/0491H01M8/04455H01M2220/20H01M8/04302H01M8/04225B60L3/0053B60L2240/36B60L2240/662B60L2240/80Y02T90/16B60L50/72B60L58/31B60L58/40B60L58/32Y02T10/72Y02T90/40Y02T10/70Y02E60/50Y02E60/10H01M8/04223
Inventor D.I.哈里斯S.贾纳帕蒂M.卡特赖特P.A.拉帕波特
Owner GM GLOBAL TECH OPERATIONS LLC
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