Battery management system and vehicle

Abstract

The invention discloses a battery management system and a vehicle. The battery management system comprises: N battery modules, wherein the N battery modules are connected in series, each battery module is connected with a first electric control switch in parallel, and N is greater than or equal to 2; sub-battery management systems, wherein each battery module is correspondingly provided with one sub-battery management system, each sub-battery management system comprises a controller, and the controller is used for controlling the first electric control switch to be switched on or off; and an overall battery management system, wherein the overall battery management system comprises a signal processing module and a high-voltage connecting device, the overall battery management system comprises a high-voltage connecting device, and the signal processing module sends out a control signal based on the voltage of the first end and the voltage of the second end of the high-voltage connectingdevice to control the high-voltage connecting device to be connected or disconnected. According to the technical scheme provided by the embodiment of the invention, the problem of management disorderof the battery management system is solved, and a stable and safe power supply is provided for the electric vehicle.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of batteries, and in particular to a battery management system and a vehicle. Background technique [0002] Application to electric vehicles includes multiple battery modules, wherein each battery module is assembled from multiple single cells. [0003] In the prior art, one battery management system controls multiple battery modules, and the management system is relatively chaotic, which cannot guarantee stable and safe power supply for electric vehicles. Exemplarily, when one or several battery modules are abnormal, the battery management system controlling multiple battery modules may not be able to operate, so that the electric vehicle cannot continue to provide power. Or when the voltage provided by multiple battery modules does not meet the preset voltage required by the electric vehicle, it will continue to provide power for the electric vehicle, resulting in potential safety ha...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a battery management system and a vehicle to solve the technical problem that the management system of the battery management system is relatively chaotic and cannot guarantee stable and safe power supply for electric vehicles

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