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Apparatus for diagnosing relay contact of electric vehicle and method thereof

A relay contact, electric vehicle technology, used in electrical devices, battery/fuel cell control devices, electric vehicles, etc., can solve problems such as driver danger and non-execution, and achieve the effect of improving stability and reliability

Inactive Publication Date: 2013-12-04
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relay diagnostics are generally not performed when individual electronic components fail when closed, exposing the drive to potentially dangerous situations

Method used

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  • Apparatus for diagnosing relay contact of electric vehicle and method thereof
  • Apparatus for diagnosing relay contact of electric vehicle and method thereof
  • Apparatus for diagnosing relay contact of electric vehicle and method thereof

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Embodiment Construction

[0033] The principle of the embodiment will be described below. Therefore, although not specifically described and narrated in the specification, those having ordinary skill in the art can realize the principles of the embodiments and can invent various devices within the concept and scope of the embodiments. Further, in principle, conditional terms and examples mentioned in the specification should obviously be intended for understanding the idea of ​​the examples and not limit the scope of the examples.

[0034] Further, it should be understood that all specific descriptions teaching specific embodiments, as well as principles, aspects, and examples are intended to include structural and functional equivalents. Further, it should be understood that equivalents may include equivalents to be developed in the future as well as known equivalents and may include all devices of the invention for performing the same function regardless of its structure.

[0035] According to an em...

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Abstract

Disclosed are an apparatus for diagnosing a relay contact of an electric vehicle and a method thereof. The method includes measuring a first voltage input from a high-voltage battery to an inverter; comparing the first voltage with a second voltage output through the high-voltage battery; identifying a detection time point of the first voltage when the first voltage is greater than the second voltage; and determining whether a high-voltage relay, which intermits an output voltage of the high-voltage battery, is malfunctioned based on the identified detection time point.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2012-0054264 (filed May 22, 2012) under 35 U.S.C. 119 and 35 U.S.C. 365, which are hereby incorporated by reference in their entirety. technical field [0003] The invention relates to a diagnostic device connected to an inverter for an electric vehicle. More particularly, the present invention relates to a device for diagnosing a relay contact installed at a power line connected to a motor controller to diagnose melting of a high voltage relay contact that closes or disconnects a main power supply, and a method thereof. Background technique [0004] An inverter used as a motor controller employed in an eco-friendly vehicle is an electronic / electrical subassembly (ESA) that converts high-voltage DC power into AC power or DC power for the purpose of controlling a motor. An inverter is a main component of an electric drive device used as a vehicle. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327B60L3/00B60L50/16
CPCH02P6/001G01R31/3278G01R31/007G01R31/40B60L3/0023B60L3/003B60L3/0053B60L3/0061B60L3/0084B60L3/04B60L3/12B60L7/14B60L15/007B60L15/2009B60L2210/10B60L2210/40B60L2240/12B60L2240/421B60L2240/423B60L2240/545B60L2240/547B60L2240/549B60L2250/16B60L2250/26Y02T10/70H02P6/34B60L50/40B60L50/16B60L50/51B60L58/30Y02T10/64Y02T10/72Y02T10/7072Y02T90/40G01R31/327G01R19/165
Inventor 赵德衍
Owner LSIS CO LTD
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