Multi-layer safety protection device and method for electric vehicle charging

Abstract

A multi-layer safety protection device for electric vehicle charging comprises a vehicle control unit, a storage battery, a battery management system, a charger, a remote monitoring module and a remote cloud platform. The storage battery is connected with the battery management system, the charger and a power battery form a closed loop, and the battery management system is in communication connection with the charger; the vehicle control unit is in communication connection with the battery management system, the remote monitoring module is in communication connection with the vehicle control unit, and the remote cloud platform is in communication connection with the remote monitoring module; and the vehicle control unit monitors a vehicle state and a charging state issued by the remote cloud platform in real time, and if a vehicle is abnormal or a charging abnormality notification issued by the remote cloud platform and forwarded by the vehicle-mounted remote monitoring module is received, the vehicle control unit notifies the battery management system to make a charging adjustment response. According to the multi-layer safety protection device, the current charging state of the battery system is monitored, the health and safety states of the battery are analyzed in multiple dimensions, the dynamic state of the vehicle is monitored, and multi-azimuth and multi-angle protectionis provided for vehicle charging.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, and more specifically refers to a charging multi-layer safety protection device and method for electric vehicles. Background technique [0002] At present, when electric vehicles are charging, there are usually only battery management systems and chargers on the communication link. The battery management system and charging piles only interact with the charging status of the battery system and charging piles. When the system is abnormally faulty, such as abnormal handbrake, it may cause the vehicle to slide with the charging cable during the charging process, and the charging cable will be disconnected when it is charged, resulting in a safety accident. On the other hand, the battery management system controls the charging according to the real-time status of the battery system. , failed to identify the inconsistency of historical charging behavior within the life cycle, such as incon...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a multi-layer safety protection device and method for electric vehicle charging, to overcome the safety accidents caused by charging when the vehicle has an abnormal fault other than the battery system, which can only be controlled by the battery management system itself when charging the existing electric vehicle. , and when the inconsistency of historical charging behavior in the life cycle cannot be identified, the charging cannot be stopped in time, etc.

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