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Simple test system for new energy vehicle radiation harassment risk assessment

A new energy vehicle, radiation disturbance technology, applied in the direction of measuring interference from external sources, measuring electricity, measuring devices, etc., can solve problems such as the inability to quickly and accurately locate parts and cables, and the inconvenience of vehicle EMI rectification and analysis, and achieve savings Rectification of test cost, convenient operation and maintenance, and the effect of ensuring the pass rate

Pending Publication Date: 2017-12-15
东风特汽(十堰)专用车有限公司
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AI Technical Summary

Problems solved by technology

[0008] The radiation disturbance test is carried out in the vehicle electromagnetic compatibility laboratory. As the final EMC test result of the vehicle, it is impossible to quickly and accurately locate the problematic parts and cables
The vehicle EMC laboratory belongs to the electromagnetic field far-field test. It cannot accurately and quickly distinguish which part (EMI source) or cable (EMI antenna) on the vehicle caused the RE exceeding the standard. Inconvenience

Method used

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  • Simple test system for new energy vehicle radiation harassment risk assessment
  • Simple test system for new energy vehicle radiation harassment risk assessment
  • Simple test system for new energy vehicle radiation harassment risk assessment

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below. 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.

[0031] Such as figure 1 As shown, the simple test system for risk assessment of radiation disturbance of new energy vehicles includes:

[0032] EMI probes include near-field probes 2 and cable current coupling pliers; the EMI probes are used to obtain EMI data on parts and cables installed on the vehicle, and the EMI data are noise source current spectrum data to find out the electromagnetic compatibility three The electromagnetic disturbance source and electromagnetic coupling path in the elements; and based on the electromagnetic near-field test data and the relationship between the near-field and far-field of the electromagnetic field, provide a basis for the vehicle radiation disturbance (far-field) test and rectificatio...

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Abstract

The invention relates to a simple test system for new energy vehicle radiation harassment risk assessment. The system comprises an EMI probe used for obtaining EMI data which is noise source current spectrum data of parts and cables installed in a vehicle and ascertaining an electromagnetic interference source and an electromagnetic coupling path in electromagnetic compatibility three elements, and a spectrum analyzer or receiver 4 for displaying the rule of the change of a voltage amplitude with frequencies and measuring the interference strength of each frequency. The EMI probe is connected to the spectrum analyzer or receiver 4 through a coaxial cable 3. The simple test system of the invention has the advantages of simple equipment and convenient operation and maintenance, an EMI problem in a vehicle test can be timely found and improved, the one-time passing rate of the vehicle is ensured, and the cost of vehicle EMC rectification and testing is saved.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a simple test system for risk assessment of radiation disturbance of new energy vehicles. Background technique [0002] New energy vehicles are mainly composed of battery packs, motor controllers and motors, DC / DC switching power supply modules, and related auxiliary connecting lines to form independent power electronic devices. The current conversion rate is very high, and the electromagnetic interference generated during its operation is more serious. [0003] These electromagnetic interferences may radiate outwards in the form of electromagnetic waves, and may also spread to other devices in the form of interference currents through the cables connected to them. In the limited space of the car, the potential harm of this interference is more serious, mainly in : Degrade the working performance of the on-board power electronic equipment, reduce the serv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/001
Inventor 程化一李世斌徐海柱刘燕
Owner 东风特汽(十堰)专用车有限公司
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