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Estimating minimum voltage of fuel cells

一种燃料电池、电池电压的技术，应用在燃料电池、燃料电池分组、测量电流/电压等方向，能够解决昂贵、操作性能降低、电压复杂成本等问题

Inactive Publication Date: 2014-05-07
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stack voltage is monitored to ensure good stack operation, and individual fuel cell voltages can be monitored to assess low voltage conditions that may cause reduced operational performance of the stack or the entire fuel cell system including the stack or even closure
[0003] But directly measuring the voltage of each individual fuel cell would be complex and costly

Method used

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  • Estimating minimum voltage of fuel cells
  • Estimating minimum voltage of fuel cells
  • Estimating minimum voltage of fuel cells

Examples

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Embodiment Construction

[0016] The following description of exemplary embodiments is merely descriptive in nature and is not intended to limit the claims, their application, or uses in any way.

[0017] exist figure 1 An exemplary operating environment is shown in and may be used to implement one or more of the methods disclosed herein for estimating the minimum voltage of a fuel cell. The method may be implemented using any suitable system, and more particularly may be implemented in conjunction with a fuel cell system such as system 10 . The following system description simply provides a brief overview of an exemplary fuel cell system, although other systems and components not shown herein may also support the methods disclosed herein.

[0018] Generally speaking, fuel cell system 10 may include a fuel source 12 , an oxidant source 14 , and a fuel cell stack 16 coupled to fuel source 12 and oxidant source 14 .

[0019] The fuel source 12 may be a source of hydrogen gas, and the oxidant source 14 ...

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Abstract

A method of estimating minimum voltage of fuel cells, and a product using same.

Description

technical field [0001] The field to which the invention generally relates includes fuel cells and related methods of operation. Background technique [0002] A fuel cell is an electrochemical energy conversion device that uses input hydrogen and oxygen to perform a catalytic reaction to produce water as a by-product and a useful electrical output. Discrete fuel cells are typically connected electrically in series to form a stack. For example, a stack of 200 fuel cells, each producing about 0.75 volts, can output about 150 volts. The stack voltage is monitored to ensure good stack operation, and individual fuel cell voltages can be monitored to assess low voltage conditions that may cause reduced operational performance of the stack or the entire fuel cell system including the stack or even closure. [0003] But directly measuring the voltage of each individual fuel cell would be complex and costly. To minimize voltage measurements, adjacent fuel cells are typically group...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36G01R19/00H01M8/24
CPCH01M8/04559H01M8/04552H01M8/0488H01M8/24Y02E60/50
Inventor K·马拉瓦拉普S·斯尔吉瓦-罗夫里娅B·拉可什马南M·F·扎维萨
Owner GM GLOBAL TECH OPERATIONS LLC