Optical Battery Management System Interference Reduction
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Solution Overview
Problem
Battery management systems face challenges with electromagnetic interference distorting electrical signals used for communication between pack and module controllers, and limited bandwidth leading to potential component failures and increased costs.
Innovation Solution
Implementing an optically communicative battery management system using optical fiber or light pipes for communication between pack and module controllers, and employing time division multiplexing to increase bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical signals are used for communication between pack and module controllers, then communication can be established, but electromagnetic interference distorts the signals reducing reliability
Solution Approach 1:
The patent introduces an optical intermediary (light pipe or optical fiber) to mediate communication between the pack controller and module controllers. This intermediary converts electrical signals to optical signals for transmission, eliminating direct electrical contact and thus blocking electromagnetic interference from distorting the communication signals while maintaining reliable data exchange.
2Reliability
If traditional electrical communication is used, then system complexity is low, but bandwidth is limited leading to potential component failures
Solution Approach 1:
The patent replaces the traditional electrical communication system with an optical communication system. By substituting electrical signal transmission with optical signal transmission through light pipes or optical fibers, the system achieves higher bandwidth and improved reliability while the added complexity is justified by the significant performance gains in data transmission capacity and interference resistance.
3Productivity
If optical communication is implemented, then bandwidth is increased and interference is reduced, but device complexity increases
Solution Approach 1:
The patent segments the communication system into distinct optical modules (light pipes or optical fibers) that can be independently implemented and integrated. This segmentation allows the optical communication components to be added as discrete elements, managing the complexity by breaking down the overall system into manageable parts while still achieving high bandwidth and interference reduction benefits.
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
The optical communication method reduces interference and enhances bandwidth, improving the reliability and efficiency of battery management systems by ensuring clear and rapid data transmission.
Implementation Method 1
communicate optically with each other
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
An optically communicative battery management system includes a pack controller and one or more module controllers optically coupled to the pack controller. The module controllers may themselves be optically coupled together in series, and communication from an upstream module controller may be relayed through one or more downstream controllers en route to the pack controller. The pack controller may also send an optical signal that is used by the pack controller to determine whether any one or more of the battery modules is experiencing a safety fault, and the communication channel used to transmit that optical signal may, absent any safety faults, be used to multiplex message data to the module controllers.