A charging pile system for power battery fault diagnosis based on cloud platform

Abstract

The present invention provides a charging pile system based on a cloud platform for power battery fault diagnosis, including a charging pile, a cloud platform and a user APP. The charging pile includes a main control board, a 3 / 4 / 5G module, a WiFi module, a charging gun, Voltage measuring instrument, the cloud platform includes user data receiving module, signal noise reduction module, feature parameter extraction module, curve similarity calculation module, fault diagnosis module; the charging pile obtains the battery data of the power battery in the charging process in real time; The 3 / 4 / 5G module or WiFi module is transmitted to the signal noise reduction module to obtain the battery data after noise reduction; the obtained battery data after noise reduction is input into the characteristic parameter extraction module to obtain the characteristic parameter curve, and the obtained characteristic parameter curve is input into the curve The similarity degree calculation module obtains the similarity degree of the characteristic parameter curve of the charging cycle, and inputs it into the fault diagnosis module in the cloud platform to judge whether a fault occurs.

Description

technical field [0001] The invention relates to the technical field of charging piles and the field of battery fault diagnosis. Specifically, the invention relates to a charging pile system for power battery fault diagnosis based on a cloud platform. Background technique [0002] In recent years, secondary lithium-ion batteries have been widely used in 3C products, electric vehicles, and energy storage due to their high energy density, long service life, low self-discharge rate, and no memory effect. Especially with the increasingly prominent environmental protection issues, the use of lithium-ion batteries in the field of electric vehicles shows an almost linear growth trend. However, due to the instability of the lithium-ion battery itself, the frequent safety accidents during its operation have attracted more and more attention. Therefore, it is imminent to invent a method and system that can detect battery faults during the charging process of the power battery and pre...

AI Technical Summary

Problems solved by technology

[0003] Existing battery fault diagnosis methods mainly include fault diagnosis methods based on battery models and battery-free models. The two have problems such as: the model has high computational complexity and is difficult to use for real-time online monitoring; it relies heavily on sample quality and has poor extrapolation capabilities.

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