Automotive electronic product thermal fatigue service life accelerated testing method

Abstract

The invention discloses an automotive electronic product thermal fatigue service life accelerated testing method which comprises the steps of respectively obtaining thermal impact durability testing acceleration times, testing time, energization temperature cycle durability testing acceleration times and testing time in a condition of no number change of to-be-tested samples; obtaining the targetthermal impact durability testing time in a condition of no number change of first to-be-tested samples, and obtaining target energization temperature cycle durability testing time on the condition ofno number change of second to-be-tested samples; performing thermal impact durability testing on the condition of the first target sample number and the target impact durability testing time, and performing energization cycle durability testing on the condition of the second target sample number and the target energization cycle durability testing time; and performing preset-time-length random vibration testing on the samples which pass the thermal impact durability testing and energization cycle durability testing, and obtaining the target sample. The method according to the invention can reduce the number of cycle times, testing time length and required amount of testing samples in existing automotive electronic product testing.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an accelerated test method for thermal fatigue life of automobile electronic products. Background technique [0002] With the rapid development of the economy and the automobile industry and the rapid improvement of people's living standards, automobiles have gradually become a means of transportation for ordinary families. At first, the car's power, safety and low fuel consumption were the primary reference criteria for customers when buying a car, so car companies put the main development energy and funds into the research and development and improvement of these aspects. However, as customers have paid more attention to and cared about subjective feelings in recent years, power, safety and fuel consumption alone are not enough to attract more potential consumers. In this context, the design life of automotive electronics has gradually been pushed to a new stage, so the li...

AI Technical Summary

Problems solved by technology

However, as customers pay more attention to and care about subjective feelings in recent years, power, safety and fuel consumption alone are not enough to attract more potential consumers

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