Battery Pack NFC Communication for Secure BMS Data Exchange
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Solution Overview
Problem
Existing communication methods for battery packs in electric vehicles, particularly Near Field Communication (NFC), face challenges in ensuring seamless and secure communication between battery modules, the battery-pack control system module, and external electronic devices, leading to inefficiencies and risks of physical damage and network security issues.
Innovation Solution
A battery-pack control system utilizing NFC-based short-range wireless communication between battery modules, the battery-pack control system module, and external electronic devices, incorporating a Battery Management System (BMS) module for CAN communication, first and second wireless communication modules for NFC, and a third module for Bluetooth communication to ensure seamless and secure data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NFC communication is used for battery module communication, then communication speed and security are improved, but implementation complexity and unresolved issues between modules increase
Solution Approach 1:
The system divides the battery pack into multiple battery modules, each equipped with its own wireless communication module. This segmentation allows each module to communicate independently via NFC, simplifying the overall implementation while maintaining security. Each module handles its own communication tasks rather than requiring a centralized complex communication system.
Solution Approach 2:
The patent introduces a gateway device as an intermediary between battery modules and external systems. This gateway handles the complexity of NFC communication protocols and data routing, allowing individual modules to use simple NFC interfaces while the gateway manages the complex communication tasks, thus resolving the contradiction between simplicity and security.
2Productivity
If traditional communication methods are used for battery packs, then implementation is simpler, but communication speed and efficiency are reduced
Solution Approach 1:
The patent replaces traditional wired mechanical communication connections with wireless NFC communication. This substitution eliminates physical connectors and wiring complexity while enabling faster data transmission between battery modules and external devices, thus improving communication efficiency without significantly increasing system complexity.
3Reliability
If multiple communication modules are installed for seamless communication, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent designs a universal wireless communication module that can function in multiple roles: as a battery module communication device, as a gateway to external systems, and as a BMS interface. This multi-functional design allows a single module type to perform multiple communication tasks, reducing the need for separate specialized modules while maintaining communication reliability across all functions.
Data Source
AI summary
The present disclosure relates to a battery-pack control system using short-range wireless communication comprises at least one battery module, installed inside the battery pack; at least one first wireless communication module, installed in the battery module, configured to receive control signals from external sources and to transmit management data of the battery module to external systems, and communicating through NFC (Near Field Communication)-based short-range wireless communication; at least one second wireless communication module, installed inside the battery pack, positioned close to the first wireless communication module(s), and communicating with the first wireless communication module(s) through NFC-based short-range wireless communication; and a Battery Management System (BMS) module, installed in the battery pack, configured to communicate with the vehicle's Electronic Control Unit (ECU) via CAN (Controller Area Network) communication, and to communicate with the first wireless communication module, the second wireless communication module, and external electronic devices through NFC communication.