Fault detecting device and method for electric vehicle and high-voltage interlocking system thereof

A technology for fault detection and electric vehicles, applied in the field of vehicles, can solve problems such as the inability to realize self-inspection of high-voltage interlock connectors

Active Publication Date: 2019-04-19
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problem with the related technology is that it can only realize faults such as connection and disconnection of the high-voltage plug-in, short-circuit to the power supply and short-circuit to the ground

Method used

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  • Fault detecting device and method for electric vehicle and high-voltage interlocking system thereof
  • Fault detecting device and method for electric vehicle and high-voltage interlocking system thereof
  • Fault detecting device and method for electric vehicle and high-voltage interlocking system thereof

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Embodiment Construction

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0044] The fault detection device and method for an electric vehicle and its high-voltage interlock system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0045] figure 1 It is a schematic block diagram of a fault detection device for a high-voltage interlocking system in an electric vehicle according to an embodiment of the present invention. Such as figure 1 As shown, the high-voltage interlock system includes a high-voltage connector 10. The male end ...

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Abstract

The invention provides a fault detecting device and method for an electric vehicle and a high-voltage interlocking system thereof. The high-voltage interlocking system comprises a high-voltage connecting plug-in member, a male end of the high-voltage connecting plug-in member is provided with a first contact and a second contact, a female end of the high-voltage connecting plug-in member is provided with a third contact and a fourth contact, the first contact cooperates with the third contact, the second contact cooperates with the fourth contact, the device comprises a voltage dividing unit,a first signal collecting end, a second signal collecting end and a control unit, the control unit respectively collects voltages of the first signal collecting end and the second signal collecting end to generate a first voltage value and a second voltage value, according to the first voltage value and the second voltage value, a connection status of the high-voltage connecting plug-in member isjudged, thereby effectively detecting the abnormal connection of the high-voltage connecting plug-in member, a strong guarantee for the subsequent development of refined fault handling measures is provided, and the driving experience of a driver is improved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a fault detection device and method for an electric vehicle and a high-voltage interlocking system thereof. Background technique [0002] In the face of increasingly severe energy and environmental problems, energy-saving and new energy vehicles are becoming research hotspots in various countries. As a kind of energy-saving and new energy vehicle, pure electric vehicle adopts all-electric drive, and its only energy source in the process of driving is the on-board power battery. All pure electric vehicles adopt a high-voltage drive scheme, that is, under normal conditions, the output voltage of the power battery reaches 400V or even higher. In addition, due to the collection of many high-voltage components inside pure electric vehicles, such as power batteries, drive motors, motor controllers, electric air conditioners, and chargers, the operating current of electric vehicles ca...

Claims

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Application Information

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IPC IPC(8): G01R31/04
CPCG01R31/66
Inventor 李玮李党清刘超
Owner BEIJING ELECTRIC VEHICLE
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