Battery pack anomaly detection method and device of electric vehicle and storage medium

Abstract

The invention discloses a battery pack anomaly detection method and device of an electric vehicle and a storage medium, and relates to the technical field of vehicle detection. The battery pack anomaly detection method of the electric vehicle comprises the steps of collecting an audio signal through a sound collection device arranged on the electric vehicle, performing feature recognition on the audio signal to determine an audio type of the audio signal, when the audio type is an abnormal audio, determining an abnormal position where the abnormal audio is sent based on a sound source positioning technology, the abnormal audio comprising collision audio or scraping audio, and when it is judged that the abnormal position is the same as the position of the battery pack, determining that the first detection result of the battery pack is abnormal. According to the invention, the collected audio signal is analyzed, and the type of the audio signal can be obtained according to different characteristics of the audio, so that the specific abnormal condition is determined. And then the abnormal position is positioned according to the audio signal, so that the abnormal detection of the battery pack is realized.

Description

technical field [0001] The invention relates to the technical field of vehicle detection, in particular to a battery pack abnormality detection method, device and storage medium of an electric vehicle. Background technique [0002] For the safety of the occupants of new energy electric vehicles, the power batteries of electric vehicles are generally located under the front of the vehicle body, rather than in the passenger compartment. The outside of the battery will be packaged into a battery pack with a metal case to protect the internal battery. However, the battery pack installed under the car is vulnerable to abnormal mechanical impacts such as edge stone impacts, which may damage the internal components of the battery and cause fire incidents. At present, the relevant processing methods to deal with abnormalities of the battery pack are as follows: First, the driver initially judges that the battery pack may have been subjected to abnormal mechanical shocks, and then g...

AI Technical Summary

Problems solved by technology

However, this method is a response to the abnormality of the battery inside the battery case, and a battery fire may occur at any time

Third, set a vibration sensor on the battery pack to detect whether the battery pack is collided, but this method can only detect whether the battery pack is collided, but cannot detect the specific collision or other damage of the battery pack

In addition, this method requires that the vibration sensor must be installed on the battery pack. Since the battery pack itself is vulnerable to impact, the vibration sensor is also easily damaged, resulting in failure of the abnormal detection function of the battery pack.

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