Electric vehicle charging method and electric vehicle charging device based on storage battery monitoring and fault diagnosis

Abstract

The invention relates to an electric vehicle charging method based on storage battery monitoring and fault diagnosis, wherein the electric vehicle charging method settles defects in prior art. The electric vehicle charging method comprises the steps of monitoring fluctuation or abrupt change of discharging voltage and current of the storage battery, acquiring a voltage signal and a current signal in the discharging process and storing the acquired voltage signal and the acquire current signal, and uploading the stored data to the charging device in each charging; processing and classifying the uploaded data by the charging device, furthermore deleting the data stored in the electric vehicle, and emptying a storage space; performing fault diagnosis and battery service prediction through performing state data processing on the classified data; finishing battery service life prediction and fault state diagnosis, and performing feedback to a user; if a greatly safety potential hazard exists in the battery, transmitting fault early-warning on the user, and simultaneously stopping power supply to the storage battery; and when a latent fault risk exists, transmitting early-warning to the user, and acquiring the battery service life and fault prediction information by the user.

Description

technical field [0001] The invention relates to a charging method and device based on battery pack monitoring and fault diagnosis, in particular to an electric vehicle charging method and device based on battery pack monitoring and fault diagnosis. Background technique [0002] With the continuous development of electric vehicle technology, more and more consumers have begun to recognize and choose to purchase electric vehicles. The most critical factor affecting electric vehicles is the battery life of electric vehicles, and with the use of electric vehicles, the battery will degrade, and the entire battery will lose about 20% of its capacity. The battery pack is the core of an electric vehicle, and its performance determines the quality and user experience of an electric vehicle. Its operating environment is complex and changeable, and the battery life of the battery pack will be greatly reduced due to the influence of temperature. Therefore, the monitoring and fault diag...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the working environment of the battery for electric vehicles is complex, the life of the battery is greatly affected by factors such as temperature, the failure is prone to occur, and the personal and property safety of the user is endangered.