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Detection circuit and detection method

A technology for detecting circuits and circuits, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., and can solve problems such as the working influence of high-power switching devices

Active Publication Date: 2021-06-08
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Because there may be faults at both the high-side load end and the low-side load end in the drive circuit, which will affect the operation of high-power switching devices

Method used

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  • Detection circuit and detection method
  • Detection circuit and detection method

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Embodiment Construction

[0083] The features and exemplary embodiments of the various aspects of the present invention will be described in detail below, in order to make the objects, technical solutions and advantages of the present invention, the invention will be described in further detail below with reference to the accompanying drawings and examples. It will be appreciated that the specific embodiments described herein are only configured to explain the present invention and is not configured to limit the invention. For those skilled in the art, the present invention can be carried out without some details in these specific details. The description of the embodiments is merely a better understanding of the present invention is provided by way of example to illustrate the examples of the present invention.

[0084] It should be noted that in this article, a relationship term such as the first and second, etc. is only used to separate an entity or operation with another entity or an operational area, ...

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Abstract

The invention discloses a detection circuit and a detection method. The detection circuit includes: a first switch sub-circuit, a second switch sub-circuit and a detection sub-circuit, and a high-side drive unit, a load, and a low-side drive unit connected in sequence; one end of the first switch sub-circuit is connected to the detection power supply, and the second The other end of the first switch sub-circuit is respectively connected to the high-side load end and the low-side load end; one end of the second switch sub-circuit is connected to the reference reference voltage end, and the other end of the second switch sub-circuit is respectively connected to the high-side load end and the low-side load end. The side load terminal is connected; the first switch subcircuit includes at least one switch, and the second switch subcircuit includes at least one switch; the detection subcircuit is connected with the load and used to detect the current direction and magnitude of the load. According to the detection circuit and detection method provided by the embodiments of the present invention, the detection of the fault type and fault location of the driving end is realized, and the reliability of detection is improved.

Description

Technical field [0001] The present invention relates to the field of battery, and more particularly to a detection circuit and a detection method. Background technique [0002] Electric cars have become the trend of the development of automotive industry, and current electric vehicles are generally used as a high-power switching device such as relays, contactors, and the like as a battery powertrain control switch. At present, the high power switching device needs to be driven by the drive circuit to achieve the conduction of high power switching devices. [0003] In the prior art, when the drive circuit of the relay, contactor is bilateral drive, that is, the driving method of the driving circuit of the high power switching device includes a high side drive and a low side drive. The drive circuit typically includes a drive power source, a high side drive unit, a low side drive unit, and a ground. Among them, the high-side drive unit is used to control the connection between the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/385
CPCG01R31/3644
Inventor 曾毓群吴凯娄其栋傅焱辉骆会秀李前邓
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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