Wireless Battery Module Management for Electric Vehicle Power Systems
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Solution Overview
Problem
Existing electric vehicle battery management systems face challenges in efficiently managing and monitoring multiple battery modules due to complexities in wiring and communication, leading to potential stability issues and difficulties in replacing battery modules.
Innovation Solution
A power management system for electric vehicles that employs a master-slave wireless communication architecture, using a single or multiple wireless frequency channels for data communication between an energy management system and battery management systems, allowing for efficient management and monitoring of battery modules with reduced wiring and improved module replacement convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a plurality of battery modules are used to power an electric vehicle, then the energy capacity and operational duration are improved, but the wiring complexity and communication infrastructure requirements increase significantly
Solution Approach 1:
The patent combines multiple battery modules into a unified battery pack system with a centralized battery management system. The BMS integrates monitoring of voltage, current, and temperature across all modules through a unified communication bus, eliminating the need for separate wiring and communication infrastructure for each module. This merging approach maintains extended operational duration while significantly reducing overall wiring complexity.
2Reliability
If traditional wired communication is used between battery management systems and energy management system, then communication reliability is maintained, but the system becomes difficult to expand and modify
Solution Approach 1:
The patent implements a dynamic communication architecture using a communication bus that allows the battery management system to adaptively connect and disconnect from various battery modules. The system can dynamically add or remove modules from the network without requiring physical rewiring, maintaining communication reliability through protocol-level error handling while providing flexible system expansion and modification capabilities.
3Stability of the object's composition
If battery modules are permanently installed in the battery pack, then structural stability is improved, but replacement and maintenance become difficult
Solution Approach 1:
The patent segments the battery pack into independent, modular battery modules that can be individually removed and replaced. Each module is designed as a self-contained unit with standardized mechanical and electrical interfaces. The battery management system supports hot-swapping of modules by dynamically reconfiguring the communication bus and power connections, maintaining structural stability during operation while enabling easy replacement during maintenance without affecting other modules.
Data Source
AI summary
Various techniques described herein relate to electric vehicle power management system for managing a plurality of battery modules in a battery pack. Such electric vehicle power management system may include a plurality of battery management systems corresponding to a plurality of battery modules, and an energy management system for managing the plurality of battery management systems. The energy management system and the plurality of battery management systems may adopt master-slave wireless communication, and may use a single wireless frequency channel or a plurality of assigned wireless frequency channels.