Wireless BMS Battery Pack Signal Reflection for Stable Communication
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Solution Overview
Problem
Wireless communication in battery management systems (BMS) for battery packs is affected by antenna sensitivity, leading to unstable operation due to deteriorating communication quality.
Innovation Solution
Incorporation of a signal reflection unit with a parabolic curved surface, positioned at a focal length from the main BMS antenna, to enhance the directivity and sensitivity of radio signal transmission and reception between the main and module BMS antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used instead of wired communication in BMS, then cable requirements are eliminated and installation is simplified, but communication quality deteriorates due to antenna sensitivity issues
Solution Approach 1:
A signal reflection unit is introduced as an intermediary component between the antenna and the communication environment. This reflection unit redirects radio signals toward the antenna, mediating the interaction between the antenna and the surrounding space to improve signal reception and transmission quality without requiring wired connections
Solution Approach 2:
The patent modifies the physical environment around the antenna by introducing a signal reflection unit with specific geometric properties (parabolic shape with focal point at the antenna). This changes the electromagnetic field distribution and signal propagation parameters to enhance communication quality while maintaining wireless operation
2Device complexity
If wireless communication is used in BMS, then cable connections are removed, but stable operation becomes difficult due to antenna sensitivity to reception and transmission conditions
Solution Approach 1:
The signal reflection unit serves as a mediator that stabilizes the wireless communication link by actively managing signal propagation. It compensates for the antenna's sensitivity to environmental conditions by providing controlled signal reflection, thereby ensuring stable operation without cable connections
Solution Approach 2:
The signal reflection unit is positioned and configured in advance to counteract potential signal loss and interference before they affect communication stability. By pre-positioning the reflection surfaces to redirect signals toward the antenna, the system proactively prevents communication deterioration rather than reacting to it
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves the sensitivity and directivity of wireless communication between BMS components, ensuring stable and efficient operation by optimizing signal reflection and transmission.
Implementation Method 1
a signal reflection unit configured to reflect the radio signals exchanged between the module BMS and the main BMS toward the module BMS or the main BMS
Data Source
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AI summary
A battery pack includes a battery module, a module battery management system, BMS, configured to monitor the battery module, a main BMS configured to exchange radio signals with the module BMS through wireless communication, and a signal reflection unit configured to reflect the radio signals exchanged between the module BMS and the main BMS toward the module BMS or the main BMS.