Wireless Battery Management System Node Network Setup
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Solution Overview
Problem
Current battery management systems face delays in establishing short-range wireless links between master and slave controllers due to the need for channel selection and interference, especially in environments with existing radio waves, which hampers efficient data transmission and monitoring of battery states in battery packs.
Innovation Solution
A wireless battery management system that employs a manager node with primary and secondary wireless communication units to establish and maintain short-range wireless networks with monitor nodes, using network configuration information to quickly set up communication channels and dedicated slots for efficient data transmission, allowing for simultaneous monitoring and control of multiple battery modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a short-range wireless link is established between master and slave controllers using conventional methods, then wireless communication is achieved, but the establishment time is excessively long due to channel selection and interference
Solution Approach 1:
The patent applies preliminary action by pre-configuring communication parameters and establishing synchronization between master and slave controllers before actual data transmission begins. The system performs initial channel assessment and sets up communication protocols in advance, so when wireless transmission is needed, the link is already prepared and can immediately transmit data without undergoing lengthy channel selection and interference checking procedures.
2Reliability
If channel selection and interference checking are performed to ensure reliable wireless communication, then communication reliability is improved, but the time required for network establishment is significantly increased
Solution Approach 1:
The system performs channel assessment and interference checking in advance during the initialization phase, before actual battery monitoring operations begin. By completing these reliability-ensuring steps preliminarily, the system avoids repeating them during operational phases, thus maintaining communication reliability while improving network establishment speed.
Solution Approach 2:
The patent applies the skipping principle by allowing the system to bypass lengthy channel selection and interference checking procedures once the wireless link is initially established. After the initial setup phase completes these reliability checks, subsequent data transmissions can proceed directly without repeating the full channel assessment process, thereby rushing through the establishment phase and maintaining high productivity.
3Ease of manufacture
If wired CAN communication is used between controllers, then space efficiency is improved, but the system lacks flexibility and requires physical connections
Solution Approach 1:
The patent replaces the mechanical wired CAN communication system with a wireless communication system. Instead of using physical cables and connectors for data transmission between battery modules and the control unit, the system employs wireless signals to transmit the same monitoring data, thereby eliminating the need for physical connections while maintaining communication functionality and improving system flexibility.
Data Source
AI summary
A wireless battery management system for quickly establishing a short-range wireless network. The wireless battery management system includes a manager node storing network configuration information when operating in a first mode, and when operating in a second mode, checking one or more monitor nodes being joined in a short-range wireless network using the network configuration information to establish the short-range wireless network along with each of the checked one or more monitor nodes and one or more monitor nodes storing joining information for joining in the short-range wireless network when operating in the first mode, and when operating in the second mode, joining in the short-range wireless network on the basis of the joining information to transmit battery data to the manager node.