Evaluation method and system for wireless charging system failure

Abstract

The invention discloses a wireless charging system fault evaluation method and system. The evaluation method comprises steps: the wireless charging system is subjected to function model division to build a fault tree, wherein the top event of the fault tree is that the wireless charging system can not perform charging, and the bottom event is a specific fault reason for each subsystem; the probability of occurrence of the bottom event is quantified according to preset data; according to the probability of occurrence of the bottom event, the critical importance of the bottom event is calculated, and according to the critical importance of the bottom event, fault of the wireless charging system is comprehensively evaluated, wherein a fault type is divided in the case of comprehensive evaluation, a different priority coefficient is given respectively, the comprehensive importance of the bottom event with the priority coefficient is calculated, and fault of the wireless charging system isevaluated according to the comprehensive importance. Thus, a fault generation reason can be quickly and automatically analyzed and evaluated, the fault information is more intuitive, a fault maintenance person can be trained, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis, in particular to a fault evaluation method and evaluation system of a wireless charging system. Background technique [0002] The resonant wireless charging system includes a transmitting module and a receiving module, and each module includes multiple functional modules such as power supply, voltage detection, and temperature detection. There are large uncertainties. [0003] In related technologies, after a wireless charging system fails to charge, it uses an oscilloscope, a multimeter, etc. to measure the transmitter and receiver. The on-site engineer judges the possible location of the fault based on the measurement results and experience. [0004] However, there are many defects in the above-mentioned judgment of faults, such as many types of faults, and it is time-consuming to eliminate and analyze one by one; the cause of faults can only be analyzed qualitatively, not quantitative...

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Problems solved by technology

[0004] However, there are many defects in the above-mentioned judgment of faults, such as many types of faults, and it is time-consuming to eliminate and analyze one by one; the cause of faults can only be analyzed qualitatively, not quantitatively, and there is great uncertainty; the analysis and judgment completely rely on the experience and experience of field engineers. Accumulation of knowledge has great limitations; the process of analysis and judgment is just a thinking process, which is not intuitive and cannot visually provide training and guidance for novices, etc.

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