Wireless Battery Unit Identification by Signal-Level Daisy Chaining
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Solution Overview
Problem
Current battery management systems face challenges in efficiently identifying and synchronizing wireless communication units due to high impedance in long wires, which consume energy and complicate re-wiring when unit positions change, limiting the effectiveness of wireless identification.
Innovation Solution
A wireless communication identification system that uses a master unit to progressively adjust signal levels to limit the count of responding units, determining the last unit through signal strength or noise ratio rankings, establishing a wireless daisy chain connection for accurate unit identification and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired daisy chain connection is used to determine proximity relation between communication units, then connection stability is improved, but energy consumption increases due to high impedance of long wires
Solution Approach 1:
The patent replaces the wired mechanical connection system with a wireless communication system. The master wireless communication unit transmits signals wirelessly to slave units, eliminating the need for physical wire connections. This substitution resolves the contradiction by removing the high-impedance wire problem while maintaining connection stability through wireless signal transmission and acknowledgment mechanisms.
2Ease of manufacture
If wired daisy chain connection is used for communication units, then initial connection setup is simplified, but adaptability decreases when unit positions need to be changed
Solution Approach 1:
The patent implements a dynamic wireless connection system where the master unit can sequentially establish connections with slave units based on their positions. The system dynamically adapts to position changes by allowing any slave unit to become the new master through signal transmission, eliminating the fixed wired structure while maintaining connection simplicity.
3Speed
If wireless communication units all respond to a signal simultaneously, then communication speed is improved, but identification precision decreases due to inability to determine unit positions
Solution Approach 1:
The patent implements periodic signal transmission where the master unit sends signals at different power levels in sequential periods. Slave units respond based on whether they receive the signal at their specific power threshold, creating a staged response pattern that enables position identification while maintaining communication efficiency.
Solution Approach 2:
The master wireless communication unit changes the power level parameter of transmitted signals to identify slave unit positions. By transmitting at different power levels and observing which slave units respond, the system can determine the number and positions of slave units, resolving the identification precision problem while maintaining communication speed.
Data Source
AI summary
The invention provides a wireless communication identification system, including: a master wireless communication unit, sending a first wireless signal, and progressively limiting a count of remaining wireless communication units responding to the first wireless signal in the wireless communication identification system according to a signal level adjustment scenario; and a first wireless communication unit, being the last wireless communication unit in the remaining wireless communication units to respond to the first wireless signal under the signal level adjustment scenario; wherein a first wireless signal connection is established between the master wireless communication unit and the first wireless communication unit by the first wireless signal, and the wireless communication identification system transmits first unit identity information of the first wireless communication unit through the first wireless signal connection.