High voltage detection circuit and its detection method

A high-voltage detection and circuit technology, applied in the power field, can solve problems such as taking a long time to detect faults and increasing the safety risk of high-voltage circuits

Active Publication Date: 2020-10-16
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the increased insulation resistance and capacitance in new energy vehicles, etc., when disconnecting the loop of the high-voltage circuit or turning on the loop of the high-voltage circuit, it takes a long time to achieve accurate fault detection of the high-voltage circuit, increasing The safety risk of high-voltage circuits

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  • High voltage detection circuit and its detection method
  • High voltage detection circuit and its detection method
  • High voltage detection circuit and its detection method

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Embodiment Construction

[0033] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configurations and algorithms proposed below, but covers any modification, replacement and improvement of elements, components and algorithms without departing from the spirit of the present invention. In the drawings and the following description, well-known structures and technologies are not shown in order to avoid unnecessary obscurity of the present inv...

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Abstract

The invention provides a high-voltage detection circuit and a detection method thereof, which relate to the technical field of electric power. The high-voltage detection circuit includes: a current regulation module, which is turned on or off to regulate the current in the high-voltage circuit; a first detection module, which is used to provide a detection signal and transmit the detection signal to a processing module; A processing module, the processing module is used to determine whether the positive switch unit or the negative switch unit fails according to the expected working state of the positive switch unit, the expected working state of the negative switch unit and the detection signal, and the positive switch unit includes a main positive switch, or includes a main positive switch. The positive switch and the main positive precharge switch, the negative switch unit includes the main negative switch, or includes the main negative switch and the main negative precharge switch. The technical solution of the invention can improve the speed of high-voltage circuit fault detection and reduce the safety risk of the high-voltage circuit.

Description

Technical field [0001] The invention belongs to the field of electric power technology, and particularly relates to a high-voltage detection circuit and a detection method thereof. Background technique [0002] With the rapid development of new energy, new energy can provide power for more and more equipment, such as battery modules, battery packs, etc., which can be used as power sources to power new energy vehicles, new energy ships, new energy aircraft, and so on. [0003] The safety of high-voltage circuits such as battery modules and battery packs that provide power is one of the important considerations for the safety of power battery systems. Due to the increased insulation resistance and capacitance in new energy vehicles, etc., it takes a long time to achieve accurate high-voltage circuit fault detection when disconnecting the loop of the high-voltage circuit or turning on the loop of the high-voltage circuit. The safety risks of high-voltage circuits are eliminated. Sum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/316
CPCB60L3/0046B60L3/0069B60L3/04G01R31/3648
Inventor 霍纪荣傅焱辉楚乐李前邓
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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