EMC test method and device for electronic components of new energy vehicles

Abstract

The invention discloses an EMC test method and device for electronic components of new energy vehicles. The method steps include: S1. Obtain an EMC standard test limit curve composed of test limit curve segments of a plurality of test frequency bands, and Configure the corresponding test limit curve segment for the undefined frequency bands between the various test frequency bands in the EMC standard test limit curve, and construct the EMC extended test limit curve; S2. Control the electronic components to be tested according to the EMC extended test limit curve Carry out EMC testing; the device includes a test limit curve building block and an EMC testing module. The invention has the advantages of simple realization method, low test cost, sufficient EMC test, and the convenience of quickly passing the whole vehicle EMC test.

Description

technical field [0001] The invention relates to the technical field of electric vehicle testing, in particular to an EMC (Electro Magnetic Compatibility, electromagnetic compatibility) testing method and device for automotive electronic components. Background technique [0002] Compared with traditional vehicles, the electromagnetic environment of new energy vehicles is more complex and harsh, so it is more difficult to achieve EMC testing of new energy vehicles. There are currently corresponding standards and regulations for the testing of new energy vehicles, such as automobile announcements, CCC certification, etc., all of which require new energy vehicles to pass electromagnetic compatibility testing, and the inspection requirements are becoming increasingly stringent. [0003] When conducting EMC tests on automobile parts, the tests are usually based on the test limit curves required by current standards and regulations. The frequency band limit requirements of electri...

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Problems solved by technology

[0005] As mentioned above, traditional EMC testing of automotive electronic components based on standard test limit curves can only cover the specified measurement frequency ranges, and cannot effectively test the parts outside the ranges. Part of the value may exceed the standard, which makes it impossible to fully and fully test the EMC performance of automotive electronic components, especially the measurement frequency ranges such as the above-mentioned conduction and radiation, etc. After the test is completed, there are large frequency ranges that cannot be covered. The obtained EMC test results are actually not accurate and complete; at the same time, the EMC test of the whole vehicle is usually 9kHz-1000MHz full-frequency control. Using the above method to test electronic components, due to incomplete component-level testing, it is easy to cause subsequent vehicle failures It is impossible to quickly pass the test at one time during the test, and frequent rectification is often required, and it is more complicated and costly to locate and rectify the defects of each component during the vehicle test stage

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