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Voltage and current detection device

A voltage and current detection, to-be-detected technology, applied in measurement devices, measurement of current/voltage, measurement of electrical variables, etc., can solve the problem of inability to directly detect the current and voltage of the components to be detected inside the vehicle, achieve accurate measurement, and solve the problem of shielding , the effect of improving safety

Inactive Publication Date: 2019-07-23
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to solve the problem that it is impossible to directly detect the current and voltage of the components to be detected inside the vehicle

Method used

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  • Voltage and current detection device
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  • Voltage and current detection device

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Embodiment Construction

[0030] figure 1 is a schematic structural diagram of a voltage and current detection device 100 according to an embodiment of the present invention. Specifically, the voltage and current detection device 100 is mainly used for detecting the voltage and current of the internal components of the electric vehicle. The voltage and current detection device 100 in this embodiment is connected to the interface of the component to be detected, and may specifically include a loop cable 10 and a bridge circuit 20 . Wherein, the loop cable 10 has an input end 11 and an output end 12, and when the input end 11 and the output end 12 are respectively connected to two interfaces of the component to be tested, a loop is formed with the internal circuit of the component to be tested. The bridge circuit 20 is connected in series in the loop cable 10, and the bridge circuit 20 is provided with two voltage output terminals 23. When the loop cable 10 forms a loop with the inside of the component ...

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Abstract

The invention provides a voltage and current detection device, and relates to the technical field of detection devices. The voltage and current detection device provided by the invention is connectedto two interfaces of a component to be detected, and comprises a loop cable and a bridge circuit, wherein the loop cable is provided with an input end and an output end; when the input end and the output end are connected with two interfaces of the component to be detected respectively, the input end and the output end are constructed into a loop with inside of the component to be detected; the bridge circuit is connected in series in the loop cable; two voltage output ends are provided at the bridge circuit; and after the loop cable is constructed into the loop with the inside of the component to be detected, the ratios of voltages at the two voltage output ends to original voltages at the two interfaces of the component to be detected are predetermined ratios. Through adoption of the detection device, the output voltage can be lowered to a degree at which the output voltage is harmless to the human body and equipment, and a high-voltage signal can be measured without being in contactwith the high voltage in the measuring process, so that the security is improved.

Description

technical field [0001] The invention relates to the technical field of vehicle detection devices, in particular to a voltage and current detection device. Background technique [0002] With the widespread application of electric vehicles and hybrid vehicles in my country, the battery voltage of the high-voltage part of the vehicle is getting higher and higher. The cables and interfaces are sealed and insulated for safety, and the high-voltage cables have shielding layers, which poses a problem for the testers to test the voltage and current of the high-voltage part. [0003] At present, when the internal voltage of the vehicle is detected, the high-voltage wiring harness is sealed, and the voltage detection probe cannot be directly connected. At present, the cables in the device to be tested have insulation and shielding layers, and the direct measurement of the current sensor is not accurate. If the voltage and current are measured at the high-voltage junction box, on the ...

Claims

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Application Information

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IPC IPC(8): G01R15/12G01R19/00
CPCG01R15/12G01R19/00
Inventor 孙坤夏欢王清清
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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