Power battery pack security prevention and control method and system for electric vehicle and computer readable storage medium

Abstract

The invention relates to a power battery pack security prevention and control method and system for an electric vehicle and a computer readable storage medium. The method comprises the steps that state information of a battery pack is obtained in real time; whether or not a battery thermal runaway early failure occurs is judged according to the state information of the battery pack; if yes, the failure type and failure location are determined; according to the determined failure type and failure location, thermal runaway early treatment action is executed; according to the stage of the electric vehicle battery safety accidents, the characteristics of the battery system accidents are monitored in real time, and early warning is performed in time. Aiming at the characteristics of the batterysystem accidents, corresponding elements and mechanisms are additionally arranged in the design process, and the occurrence or spreading process of the accidents is delayed or prevented. According tothe method, a comprehensive prevention and control strategy can be provided for the actual situation of the particular accidents, the prevention and control mechanism is started accurately, the security prevention and control effect is maximized, and the safety of passengers of the electric vehicle is guaranteed.

Description

technical field [0001] The invention relates to the technical field of electric vehicles and batteries, in particular to a method, system and computer-readable storage medium for safety prevention and control of power battery packs for electric vehicles. Background technique [0002] Electric vehicles are the main body of new energy vehicles, and power batteries are the core energy source of electric vehicles. Power batteries generally need to be grouped to meet the driving needs of electric vehicles. The vehicle power battery pack should be equipped with a safety prevention and control system to ensure the safety of the vehicle power battery pack during use. [0003] Generally, safety accidents of electric vehicles are characterized by multi-stages. The first stage is that the battery system fails, which causes the thermal runaway of the battery cells; the second stage is that the battery cells in the battery system have thermal runaway, and Local fires may occur; the thi...

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Problems solved by technology

[0005] Based on this, it is necessary to provide a safety prevention and control method for power battery packs for electric vehicles in view of the problems that traditional technical solutions cannot actively and directly monitor the faults of the battery system of electric vehicles, and cannot comprehensively improve the safety of electric vehicle battery packs. Method, system and computer readable storage medium

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