Battery management system, battery management unit switching control method, and vehicle
By adopting a dual-battery management unit redundancy architecture and a decision-making unit arbitration mechanism, the problem of power interruption caused by the failure of the main BMS in the dual-BMS redundancy architecture is solved, realizing continuous power output and high-voltage safety controllability of the battery management system, and improving the functional safety and stability of new energy vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DEEPAL AUTOMOBILE TECH CO LTD
- Filing Date
- 2026-05-29
- Publication Date
- 2026-07-17
AI Technical Summary
The existing dual-BMS redundancy architecture is prone to power output interruption after the failure of the main BMS, which reduces the safety and stability of the vehicle and cannot meet the system continuity and functional safety requirements in high-level assisted driving scenarios.
The architecture employs a dual-battery management unit with mutual redundancy. The decision unit performs centralized arbitration of fault detection information to achieve master-slave switching control, distinguishing between minor faults, serious faults, and failure faults. This avoids misjudgment and non-smooth switching in the traditional dual-BMS architecture, ensuring continuous power output and high-voltage safety and controllability.
It improves system availability and operational continuity, enhances the functional safety level and overall vehicle stability of new energy vehicles in advanced driver assistance scenarios, and reduces the probability of accidental switching and safety risks.
Smart Images
Figure CN122402246A_ABST