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High-voltage interlock detection circuit, method, device and automobile

A technology of high-voltage interlocking and detection circuits, which is applied to measuring devices, measuring electricity, and measuring electrical variables, etc., can solve problems such as high-voltage electric damage, achieve the effects of avoiding damage, improving reliability and accuracy, and ensuring safety

Active Publication Date: 2019-12-17
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Many integrated components in automobiles work under high voltage conditions, so there is a great potential for high-voltage electric injury

Method used

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  • High-voltage interlock detection circuit, method, device and automobile
  • High-voltage interlock detection circuit, method, device and automobile
  • High-voltage interlock detection circuit, method, device and automobile

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Embodiment Construction

[0061] 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 only for explaining the present invention and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents coming within the spirit and scope of the appended claims.

[0062] Specifically, various embodiments of the present invention aim at the problem that many integrated components in automobiles work under high voltage conditions, so there is a great potential for high-voltage electric damage, and propose a high-voltage interlock detection circuit. By determining the connection state of the high-voltage plug according to the voltage c...

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Abstract

The invention provides a high-voltage interlocking detection circuit, method and device and an automobile. The circuit comprises a first resistor, a second resistor, a first switch assembly and a second switch assembly; one end of the first resistor is connected with a first contact of a high voltage plug, and the other end of the first resistor is connected with one end of the first switch assembly and one end of the second switch assembly respectively; the other end of the first switch assembly is connected with a first reference level; the other end of the second switch assembly is connected with a second reference level; one end of the second resistor is connected with a second contact of the high voltage plug, and the other end of the second resistor is connected with the ground; and the working state of the first switch assembly is opposite to that of the second switch assembly. Thus, the connection state of the high voltage plug is determined according to the voltage change law of a detection point, the reliability and accuracy of the high-voltage interlocking detection circuit are improved, the harm of high voltage on human body is avoided, and the safety of the automobile is ensured.

Description

technical field [0001] The invention relates to the field of vehicle safety detection, in particular to a high-voltage interlock detection circuit, method, device and automobile. Background technique [0002] Along with the development of science and technology and the raising of people's economic ability, automobile is more and more subject to people's favor. Many integrated components in automobiles work under high voltage conditions, so there is a great potential for high-voltage electric injury. [0003] In the ISO international standard "ISO6469-3:2001 Electric Vehicle Safety Technical Specification Part 3: Protection of Personnel Electrical Injury", it is stipulated that the high-voltage components on the vehicle should have a high-voltage interlock device, that is, the HazardousVoltage Interlock Loop (HazardousVoltage Interlock Loop, Abbreviated as HVIL). By using small level signals to check the electrical integrity (continuity) of the entire high-voltage product, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/04B60R16/02H02H3/20
CPCB60R16/02G01R31/69H02H3/20
Inventor 张海艳吕志伟
Owner BEIJING ELECTRIC VEHICLE