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Method and system for maintaining stability of system of fuel cell vehicle

A fuel cell vehicle, stability technology, applied in the direction of fuel cells, power system fuel cells, battery/fuel cell control devices, etc., can solve the problem that reliability sensors cannot continuously sense

Active Publication Date: 2016-11-23
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sensor-based controllers have problems with reliability or the sensors cannot continuously sense

Method used

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  • Method and system for maintaining stability of system of fuel cell vehicle
  • Method and system for maintaining stability of system of fuel cell vehicle
  • Method and system for maintaining stability of system of fuel cell vehicle

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Embodiment Construction

[0016] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein includes motor vehicles in a broad sense, such as including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles; vessels including boats and seagoing vessels of all kinds, spacecraft, etc., and vehicles including hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuel source for non-petroleum resources). A hybrid vehicle as referred to herein is a vehicle that has more than two sources of power, such as a vehicle that has both gasoline power and electric power.

[0017] Although the exemplary embodiment is described as utilizing a plurality of units to perform the exemplary process, it should be understood that the exemplary process may also be performed by one or more modules. Furthermore, it should be understood that the term controller / control unit refers to ...

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Abstract

A method and system for maintaining stability of a system of a fuel cell vehicle are provided to prevent malfunction of sensors of a low voltage DC-DC converter and the respective controllers. A start timing of a fault diagnosis for the low voltage DC-DC converter and the respective controllers is determined and a deviation between voltages of the sensors of the low voltage DC-DC converter and the respective controllers is detected to determine whether the low voltage DC-DC converter and the respective controllers fail.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims the benefit of priority from Korean Patent Application No. 10-2015-0067562 filed on May 14, 2015, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to a method and system for maintaining the stability of a system of a fuel cell vehicle, and more particularly, to a method for determining the validity of a voltage of a sensor of a low-voltage DC-DC converter and a controller for maintaining A method and system for system stability of a fuel cell vehicle. Background technique [0004] As is well known, in a fuel cell vehicle mounted with a fuel cell system, hydrogen is supplied as fuel to a fuel cell stack to generate electric power, and an electric motor is operated by the electric power generated by the fuel cell stack to drive the vehicle. Specifically, the fuel cell system is not a power generation system ...

Claims

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Application Information

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IPC IPC(8): B60L11/18B60L3/00
CPCB60L58/30B60L3/0053B60L1/00B60L3/003B60L3/0038H01M8/04425H01M2250/20B60L50/72H01M8/04686Y02T90/40Y02E60/50
Inventor 柳盛弼玉成锡金志泰李圭一
Owner HYUNDAI MOTOR CO LTD