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Main relay monitoring device and method for green vehicle

A technology of main relay and monitoring device, applied in electrical devices, circuit devices, control devices, etc., can solve problems such as cost increase, current consumption, and overall system size increase, and achieve the effect of preventing the increase of failure degree and ensuring vehicle safety.

Inactive Publication Date: 2013-05-08
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the separate additional circuit is configured as above, electric power is required to drive the additional circuit, resulting in unnecessary current consumption, and when the additional circuit fails, the monitoring of the main relay may lack reliability
Also, in this solution, many components are required to configure an additional circuit, which leads to an increase in cost as well as an increase in the size of the entire system

Method used

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  • Main relay monitoring device and method for green vehicle
  • Main relay monitoring device and method for green vehicle
  • Main relay monitoring device and method for green vehicle

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Embodiment Construction

[0023] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

[0024] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein includes motor vehicles in general, for example, passenger vehicles including sport utility vehicles (SUVs), buses, trucks, commercial vehicles of all kinds, including various boats and watercraft of ships, aircraft, etc., and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen vehicles, and other alternative fuel vehicles (eg, fuels derived from sources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, for example, a vehicle that has gasoline power and electric power.

[0025] Furthermore, the control logic of the present invention may be embodied as a non-transitory computer readable medium on a c...

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Abstract

Disclosed is a main relay monitoring system and method for a green vehicle, where a main relay is installed between a high voltage battery and an inverter in order to diagnose whether the main relay, which controls the output of the high voltage battery, is fused. In particular a switching operation of an inverter is stopped when an ignition off is detected, and a main relay is turned off and a voltage output of a main battery is cut. Then, a voltage charged at a DC link capacitor is forcibly discharged once the main relay is completely turned off. A voltage of the main battery is then compared to an input voltage of the inverter, and a determination is made based off of this comparison whether the main relay is fused.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2011-0110727 filed with the Korean Intellectual Property Office on October 27, 2011, the entire contents of which are incorporated herein by reference. technical field [0003] The invention relates to a main relay monitoring device and method of a green vehicle, wherein the main relay is installed between a high-voltage battery and an inverter, thereby diagnosing whether the main relay controlling the output of the high-voltage battery is fused. Background technique [0004] Green vehicles including hybrid vehicles, fuel cell vehicles, and plug-in electric vehicles are provided due to the need to improve vehicle fuel efficiency and stricter exhaust gas regulations. Green vehicles typically utilize a high voltage / high current electrical grid to generate drive torque. [0005] A green vehicle generally utilizes an electric motor to gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00
CPCB60W50/02H02H3/044B60L3/00G01R19/10H02H11/00H02H7/1225B60L11/18B60L3/0023B60L3/003B60L3/04B60L2240/527B60L2240/547G01R19/165G01R31/327
Inventor 文湘贤李永国郑镇焕
Owner HYUNDAI MOTOR CO LTD
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