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Alternative Path Cooling for High Temperature Fuel Cells

一种燃料电池、冷却剂的技术，应用在燃料电池、燃料电池应用、燃料电池助剂等方向，能够解决冷却回路增加重量、增加复杂性等问题，达到防止破坏的效果

Active Publication Date: 2021-04-27
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to the other thermal control systems described above, separate closed system cooling loops add additional weight and complexity due to additional pumps, coolant, piping and energy consumption requirements

Method used

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  • Alternative Path Cooling for High Temperature Fuel Cells
  • Alternative Path Cooling for High Temperature Fuel Cells
  • Alternative Path Cooling for High Temperature Fuel Cells

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Embodiment Construction

[0017] The following detailed description relates to systems and methods for controlling the temperature of a fuel cell. As briefly stated above, a fuel cell system includes two input streams, a fuel and an oxidant. Typical thermal control systems use excess reactant flows and / or separate closed system cooling loops to control the temperature of the respective fuel cells. These systems are not always optimal when fuel cells are operating in vehicles or platforms with severe weight, space and power constraints.

[0018] Throughout this disclosure, for purposes of illustration, various embodiments will be described with respect to the operation of a high temperature fuel cell, such as a SOFC, for generating electrical power for an aircraft or aircraft subsystems. However, it should be understood that the disclosure provided herein is equally applicable to any type of fuel cell used in any application where an ambient flow of coolant is readily available. As examples of "coolan...

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Abstract

Systems and methods are provided for thermally controlling high temperature fuel cells. According to embodiments described herein, the non-reactant coolant is introduced into the fuel cell from a compressor or ram air source. The non-reactant coolant absorbs waste heat from electrochemical reactions within the fuel cell. Hot coolant is exhausted from the fuel cell and either vented to the surrounding environment or directed through a turbine. Energy recovered from the hot coolant by the turbine can be used to drive a compressor or generator to generate additional electricity and increase the efficiency of the fuel cell system. A portion of the hot coolant may be recycled into the non-reactant coolant entering the fuel cell to prevent thermal shock to the fuel cell.

Description

[0001] This application is a divisional application, the filing date of the original application is March 17, 2009, the application number is 200980113492.2 (PCT / US2009 / 037340), and the title of the invention is "Optional Path Cooling of High Temperature Fuel Cell". [0002] Background of the invention [0003] Fuel cells operate by inducing an electrochemical reaction between incoming fuel and oxidant streams to generate electricity. Many fuel cells, such as solid oxide fuel cells (SOFCs), operate at high temperatures. The waste heat generated by the electrochemical reactions in the fuel cell must be removed to control the temperature of the fuel cell in order to prevent the cell from failing. A typical thermal management system involves circulating excess reactants beyond those required for the electrochemical reaction through the fuel cell to absorb heat. However, in some applications, such as air transportation applications where fuel cells are used on board aircraft, weig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04014H01M8/04111
CPCH01M8/04014H01M8/04074H01M8/04111H01M2250/20H01M2250/402H01M2008/1293Y02B90/10Y02E60/50Y02T90/40H01M8/04708
Inventor M·E·马塔T·R·斯托拉C·巴朗
Owner THE BOEING CO