Optical Feedback BMS Communication Under Light Transmission Degradation
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Solution Overview
Problem
Existing battery management systems face challenges in maintaining communication performance due to degradation in light transmission ability caused by aging, dust, or condensation, which affects the reliability of optical communication between battery management systems.
Innovation Solution
The implementation of an optical feedback communication method using a battery management system with a light receiving unit, a light emitting unit, and a control unit that adjusts the intensity of light based on the received voltage value, ensuring constant communication quality through negative feedback control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If optical communication is used between battery management systems, then communication convenience is improved, but communication reliability deteriorates due to light transmission degradation from aging, dust, or condensation
Solution Approach 1:
The patent implements an optical feedback communication method where the receiving end measures the quality of received optical signals and feeds back this information to the transmitting end. The transmitting end then adjusts its light transmission intensity based on the feedback, dynamically compensating for degradation caused by aging, dust, or condensation. This closed-loop feedback mechanism maintains communication reliability while preserving the convenience of wireless optical communication.
2Reliability
If light transmission intensity is increased to compensate for degradation, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The patent employs dynamic adjustment of light transmission intensity based on real-time feedback about communication channel quality. Rather than continuously transmitting at maximum intensity, the system adapts the transmission power to the actual needs of the communication channel. When the channel is clear, lower intensity suffices; when degradation is detected, intensity is increased only as needed. This dynamic approach maintains reliability while minimizing energy consumption.
Solution Approach 2:
The system changes the transmission parameter (light intensity) based on measured communication conditions. The receiving end evaluates signal quality and communicates this back, allowing the transmitting end to adjust intensity parameters dynamically. This parameter adaptation ensures reliable communication under varying conditions without unnecessarily consuming energy when high intensity is not required.
3Stability of the object's composition
If negative feedback control is implemented to maintain constant communication quality, then communication stability is improved, but system complexity increases
Solution Approach 1:
The patent implements negative feedback control where the receiving end measures optical signal quality and feeds back this information to the transmitting end, which then adjusts its transmission intensity. This feedback loop maintains stable communication quality despite environmental changes. The complexity introduced is concentrated in the control logic, while the physical components remain relatively simple, making the implementation practical.
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
This approach maintains constant communication quality between battery management systems even when light transmission ability deteriorates, ensuring smooth communication performance over time.
Implementation Method 1
a light receiving unit configured to generate a voltage based on light received from an external battery management system
Implementation Method 2
a light emitting unit configured to transmit light containing communication information to the external battery management system
Data Source
AI summary
A battery management system includes a light receiving unit that generates a voltage based on light, containing communication information, received from an external battery management system, a light emitting unit that transmits light containing communication information to the external battery management system, and a control unit. The control unit is configured to check a value of the voltage generated by the light receiving unit based on the intensity of light received from the external battery management system, and to adjust an intensity of the light transmitted from the light emitting unit based on the checked voltage value.