Battery Module ID Allocation Duplicate Prevention
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Solution Overview
Problem
Existing methods for allocating IDs to battery modules in battery packs often result in duplicate allocations when external power is applied or when single or intermediate battery modules are driven, leading to inaccurate recognition of the number of modules and difficulties in controlling the entire battery system.
Innovation Solution
A method that includes ID allocation checking, deletion, and termination processes to prevent duplicate ID allocation by verifying ID allocation status through communication connectors and storage units, ensuring that IDs are reallocated correctly across battery modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic ID allocation is performed by sequentially driving battery modules, then ID allocation efficiency is improved, but duplicate ID allocation occurs when external power is applied or when single/intermediate modules are driven
Solution Approach 1:
The system performs preliminary checks before allocating IDs by verifying whether communication connectors are properly connected and whether battery modules are in valid driving states. This preliminary validation prevents duplicate ID allocation by ensuring that only modules meeting specific conditions receive ID assignment, thereby resolving the contradiction between efficient automatic allocation and allocation accuracy
Solution Approach 2:
The master BMS continuously monitors the allocation status of IDs across all battery modules and receives feedback from slave BMSs regarding their ID assignment states. This feedback mechanism enables the system to detect and correct duplicate ID allocations by identifying modules with identical IDs and reassigning them appropriately, thus maintaining both efficiency and accuracy in ID allocation
2Adaptability or versatility
If battery modules are replaced or driven individually, then system adaptability is improved, but ID management complexity increases leading to control difficulties
Solution Approach 1:
Each battery module is equipped with a slave BMS that autonomously manages its own ID allocation and status reporting. When modules are replaced or driven individually, the slave BMS automatically communicates with the master BMS to obtain appropriate ID assignment without requiring complex manual intervention. This self-service approach simplifies ID management while maintaining high adaptability to different operational configurations
Solution Approach 2:
The BMS system is designed with universal ID management capabilities that can handle various operational scenarios including single module driving, intermediate module driving, and full battery pack operation. The master BMS implements a unified ID allocation strategy that adapts to different configurations, reducing management complexity while maintaining flexibility across diverse operational modes
Data Source
AI summary
The present disclosure relates to a method for preventing duplicate allocation of an ID to battery modules, and in particularly, to a method for preventing duplicate allocation of an ID to battery modules wherein an ID is prevented from being allocated in a duplicated manner by diagnosing each state where the ID is to be allocated in a duplicated manner.