Optical BMS Communication with Adaptive LED Intensity Control
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Solution Overview
Problem
Existing battery management systems using optical communication with light-emitting elements face issues with deteriorated light transmission due to factors like dust and condensation, leading to poor communication quality and maintenance difficulties.
Innovation Solution
A battery management system with a master board that includes a light-emitting element, a resistor circuit with parallel-connected resistors controlled by a controller, which adjusts resistance magnitude to maintain communication quality by increasing light intensity through parallel resistor connections and provides caution notifications when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If optical communication using a light-emitting element is used for wireless communication between master board and slave boards, then wiring problems are eliminated and communication convenience is improved, but light transmission capability deteriorates due to dust and condensation leading to poor communication quality
Solution Approach 1:
The patent changes the electrical parameter (resistance) of the light-emitting element by connecting resistors in parallel to adjust light emission intensity. When communication quality deteriorates due to dust or condensation, the controller detects this and connects additional resistors in parallel to increase current and light intensity, thereby compensating for the degraded optical transmission conditions.
Solution Approach 2:
The system implements a feedback mechanism where the controller continuously monitors communication quality between master and slave boards. When deterioration is detected (indicating dust or condensation interference), the controller automatically adjusts the light emission intensity by modifying the resistor circuit configuration, and continues to monitor until communication quality is restored.
2Ease of operation
If optical communication using a light-emitting element is used, then wireless communication is achieved, but maintenance becomes difficult when light transmission deteriorates
Solution Approach 1:
The system performs self-diagnosis and self-adjustment by automatically detecting communication quality deterioration and correcting it through resistor circuit reconfiguration. This eliminates the need for manual intervention or physical cleaning of optical components, making the system self-maintaining and significantly reducing maintenance difficulty.
Solution Approach 2:
The automatic feedback-based adjustment system continuously monitors communication status and self-corrects for dust or condensation effects by modifying light emission intensity, eliminating the need for manual maintenance interventions.
3Reliability
If light intensity is increased to compensate for dust and condensation, then communication quality improves, but power consumption increases
Solution Approach 1:
Instead of continuously operating at maximum light intensity, the system applies partial action by only increasing light emission when and when communication quality deterioration is detected. The resistor circuit allows granular control of current increase, applying just enough additional power to compensate for the detected degradation rather than continuously consuming maximum power.
Solution Approach 2:
The system dynamically changes the electrical resistance parameter of the light-emitting circuit based on actual communication needs. By connecting resistors in parallel only when necessary, the system optimizes the balance between light intensity and power consumption, avoiding continuous high-power operation.
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
Enables easy diagnosis and maintenance of communication states by recovering light intensity and providing notifications, thereby ensuring reliable communication and preventing unnecessary power consumption.
Implementation Method 1
a light-emitting element configured to perform wireless communication with the plurality of slave boards including light-receiving elements
Implementation Method 2
a resistor circuit connected to the light-emitting element in series and including a plurality of resistors connectable in parallel to each other based on opening and closing of switches
Data Source
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AI summary
Disclosed is a battery management system for communicating, as a master board, with a plurality of slave boards, the system comprising: a light-emitting element performing wireless communication with the plurality of slave boards, each including a light-receiving element; a resistor circuit which is connected to the light-emitting elements in series and which includes a plurality of resistors that can be connected in parallel to each other according to the opening/closing of a switch; and a controller, wherein the controller controls at least some of switches such that the resistance of the resistance circuit is reduced by connecting in parallel at least some of the plurality of resistors in response to the detection of a decrease in the intensity of light transmitted from the light-emitting element to at least some of the light-receiving elements.