Fault diagnosis method and device for electric vehicle, electronic equipment and storage medium

A technology for fault diagnosis of electric vehicles, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of insufficient accuracy, heavy workload and low efficiency of fault diagnosis methods, and achieve the effect of improving reliability and efficiency

CN114239759AActive Publication Date: 2022-03-25WUHAN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2022-03-25

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Abstract

The invention relates to a fault diagnosis method and device for an electric vehicle, electronic equipment and a storage medium, and belongs to the technical field of electric vehicles. The method comprises the following steps: acquiring to-be-classified fault signals of the electric vehicle; performing feature extraction processing on the to-be-classified fault signals to obtain target input data; and inputting the target input data into the trained fault classification model to obtain a fault diagnosis result of the electric vehicle. According to the method, the to-be-classified fault signals are subjected to feature extraction processing and then input to the trained fault classification model, so that more accurate fault diagnosis can be made, and a large number of fault signals of the electric vehicle can be automatically classified, thereby realizing rapid fault diagnosis and improving the fault diagnosis efficiency. The defects that a traditional fault diagnosis method based on expert judgment is large in workload, low in efficiency and insufficient in accuracy are overcome, and ground practice application is better facilitated.
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Description

technical field

[0001] The invention relates to the technical field of electric vehicles, in particular to a fault diagnosis method, device, electronic equipment and storage medium for electric vehicles. Background technique

[0002] Under the increasingly serious environmental crisis, in order to reduce energy consumption and reduce pollutant emissions, new energy vehicles such as electric vehicles have received great attention as efficient and sustainable transportation methods. As an important part of the electric vehicle, the battery system's function and safety directly affect the overall performance of the electric vehicle. In recent years, due to the frequent occurrence of electric vehicle safety accidents caused by the failure of the battery system of electric vehicles, the demand for accurate and timely fault diagnosis of the battery system is also increasing.

[0003] However, the fault diagnosis of the battery system of the traditional electric vehicle, because i...

Examples

Embodiment Construction

[0043] The following examples are further explanations and supplements to the present invention, and do not constitute any limitation to the present invention.

[0044] A fault diagnosis method for an electric vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0045] refer to figure 1 As shown, the present invention provides a fault diagnosis method for electric vehicles, including the following steps S1 to S3.

[0046] In step S1, the fault signal to be classified of the electric vehicle is obtained.

[0047] Among them, the fault signal to be classified is a continuous long-term signal representing information on fault characteristics, and the continuous long-term signal refers to continuous data in the time domain, that is, a time series signal with a certain length. For example, the fault signal to be classified may include a time-series signal of voltage representing a fault characteristic o...