Battery safe charging processing method, device and battery management system

Abstract

The embodiment of the invention discloses a battery safe charging processing method and device and a battery management system. The method includes the steps that in the charging process, a main controller judges whether a message transmitted by a subordinate controller is received in preset time or not, and if not, it is determined that the subordinate controller is abnormal, and a high-voltage relay connected with the subordinate controller is disconnected; and the subordinate controller judges whether a message transmitted by the main controller is received in preset time or not, and if not, it is determined that the main controller is abnormal, and a high-voltage relay connected with the main controller is disconnected. By monitoring the working status of the main controller and the working status of the subordinate controller in the charging process, when the main controller or the subordinate controller works abnormally, the controllable high-voltage relays can be disconnected, the charging process is stopped, and the problem of battery overcharging is avoided.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a battery safe charging processing method, device and battery management system. Background technique [0002] Today's society is facing serious problems such as environmental pollution and shortage of fossil energy. As one of the important factors causing these problems, automobiles urgently need to be changed and innovated. Pure electric vehicles have emerged against this background. With the advantages of low noise during operation and no exhaust emissions, pure electric vehicles have become a green transportation tool that has attracted much attention, and it has also become an important direction for the future development of the automobile industry. As a control system for managing pure electric vehicle batteries, the battery management system monitors and manages the use of batteries, which directly affects battery life and safety. [0003] During the use o...

AI Technical Summary

Problems solved by technology

[0005] One purpose of the present invention is to solve the problem that the controller of the battery management system works abnormally in the recharging process of the prior art, and the charging process control fails to cause the battery to overcharge.

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