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Variable PEM fuel cell system start time to optimize system efficiency and performance

A fuel cell system and start-up time technology, applied in the direction of power system fuel cells, fuel cells, fuel cell additives, etc., can solve problems such as affecting customer satisfaction and slow start

Active Publication Date: 2014-06-18
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For efficient operation, a slow start is required, which may affect customer satisfaction in some driving situations

Method used

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  • Variable PEM fuel cell system start time to optimize system efficiency and performance
  • Variable PEM fuel cell system start time to optimize system efficiency and performance

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Embodiment Construction

[0044] The following discussion of embodiments of the invention directed to systems and methods for optimizing the start-up time of a fuel cell system based on various system input parameters is merely exemplary in nature and in no way intended to limit the invention or its application or use. For example, the present invention finds particular application in a fuel cell system on a vehicle. However, those skilled in the art will recognize that the systems and methods of the present invention may also be applied to other fuel cell systems.

[0045] figure 1 is a simplified block diagram of a fuel cell system 10 including, for example, a fuel cell stack 12 on a vehicle 52 . Compressor 14 provides air flow to the cathode side of fuel cell stack 12 via cathode input line 16 through a water vapor transfer unit 34 that measures air flow received from an air flow meter 36 that humidifies Cathode input air. Cathode exhaust gas is output from the stack 12 via cathode exhaust gas li...

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PUM

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Abstract

A system and method for controlling a fuel cell system start time based on various vehicle parameters. The method includes providing a plurality of inputs that identify operating conditions of the fuel cell system and determining a maximum allowable start-time of the fuel cell system using a hybridization control strategy and the plurality of inputs. The method then determines a maximum compressor speed and ramp rate to provide the optimal allowable start-time of the fuel cell system minimizing energy consumption and noise.

Description

technical field [0001] The present invention relates generally to systems and methods for optimizing the start-up time of a fuel cell system, and more particularly, to a system and method for optimizing the start-up time of a fuel cell system on a vehicle in order to reduce compressor parasitic losses and compressor noise , wherein the method takes into account various system data such as brake pedal position, accelerator pedal position, gear selector position, ignition key position, vehicle speed, and the like. Background technique [0002] Hydrogen is a very attractive fuel because it is clean and can be used to efficiently generate electricity in fuel cells. A hydrogen fuel cell is an electrochemical device that includes an anode and a cathode with an electrolyte therebetween. The anode receives hydrogen and the cathode receives oxygen or air. Hydrogen dissociates in the anode, resulting in free protons and electrons. Protons travel through the electrolyte to the catho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18B60L15/00H01M8/04
CPCH01M8/04223Y02E60/50H01M8/04089H01M8/04626H01M8/04753H01M8/04776H01M8/04955H01M16/006H01M2250/20H01M8/04225H01M8/04302Y02E60/10Y02T90/40
Inventor D.I.哈里斯L.德夫里斯C.麦金托什J.P.萨尔瓦多D.S.基尔默
Owner GM GLOBAL TECH OPERATIONS LLC