Vehicle motor drive circuit

A technology of motor drive and motor power, applied in circuit devices, circuits or fluid pipelines, emergency protection circuit devices, etc., can solve problems such as motor drive circuits that are not suitable for automotive safety devices, and motors cannot provide functions, and achieve enhanced signal levels. , The effect of preventing secondary problems and preventing losses

Active Publication Date: 2015-05-27
HYUNDAI MOBIS CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0012] Korean Publication Patent No. 2013-0080505 (published on 2013.07.15) discloses the technology of inductive leakage and stopping the motor action, but this is a technology limited to electric vehicles and is not applicable to automotive safety devices including ordinary cars and The motor drive circuit included on the convenience device
In addition, the technology of stopping the driving of the motor of the electric vehicle when a leakage occurs is not a countermeasure when the power line is broken, but simply stops the driving of the motor, so the motor cannot provide the proper function

Method used

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Embodiment Construction

[0022] In order to fully understand the present invention, its operational advantages, and objects achieved by the embodiments of the present invention, it is necessary to refer to the drawings showing specific embodiments of the present invention and the contents described in the drawings.

[0023] The specific embodiment of the present invention will be described below in conjunction with the accompanying drawings, thereby introducing the present invention in detail. However, the present invention can have various forms and is not limited to the embodiments described here. In addition, in order to clearly describe the present invention, parts irrelevant to the description will be omitted, and the same reference symbols in the drawings denote the same members.

[0024] Throughout the specification, when a certain part "includes" a certain constituent element, unless there is a specific contrary statement, it does not exclude other constituent elements, and means that other co...

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Abstract

Disclosed are a vehicle motor drive circuit and a driving method thereof. In the vehicle motor drive circuit according to the present invention, when the floating voltage is generated on the digital ground line due to a short circuit or a poor contact, the switch control signal is connected to the motor ground power supply to lower the signal level of the switch control signal in response to the voltage difference produced between the digital ground line and the motor ground line. Therefore, it is possible to prevent an erroneous operation of the motor switch or the motor. Accordingly, it is possible to prevent a damage of the motor or the motor switch and a secondary problem caused by unintentional operation of the motor.

Description

technical field [0001] The invention relates to a motor drive circuit for automobiles, in particular to a motor drive circuit for automobiles which can effectively prevent the abnormal operation of the motor caused by the disconnection of the digital ground wire. Background technique [0002] Most cars are no longer made up of just the essentials necessary for the car to run, but are equipped with various safety devices and conveniences. These safety devices and convenience devices are no longer purely additional elements in the car, but become an essential element in the driving of the car. [0003] At present, the most typical safety devices used in automobiles are ESC (Electronic Stability Control: Electronic Stability Control System), and ESC basically includes ABS (Anti-lock Braking System: Anti-lock Braking System) and TCS (Traction Control System: function of the traction control system). ESC is composed of various sensors that acquire the information required for E...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/08
CPCH02P7/285H02P29/032B60R16/02H02H9/04H02P29/02
Inventor 金洛俊
Owner HYUNDAI MOBIS CO LTD
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