Battery Pack Optical Communication Using Undirected OLED Signals
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Solution Overview
Problem
Conventional wired battery management systems face issues of inflexibility in pack design, wasted space due to connectors and cabling, and vulnerability to interference and cyber-attacks in wireless technologies, particularly those using line-of-sight optical communications.
Innovation Solution
Implementing a battery management system that uses undirected optical signals transmitted via Organic Light Emitting Diodes (OLEDs) to encode and transmit battery sensor data, allowing for non-line-of-sight communication between module monitoring systems and a data aggregator, which is protected from interference and attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired battery management system is used, then reliability of data transmission is improved, but device complexity and space usage increase due to connectors and cabling
Solution Approach 1:
The patent replaces the mechanical wired connection system with an optical communication system using OLEDs and photodetectors. This substitution eliminates physical connectors and cabling while maintaining secure and reliable data transmission, thereby reducing device complexity and space requirements without compromising transmission reliability.
Solution Approach 2:
The patent introduces optical signals as an intermediary medium for data transmission between module monitoring systems and the central controller. This optical intermediary replaces direct electrical connections, enabling wireless communication while maintaining data integrity and security, thus resolving the contradiction between reliability and system complexity.
2Device complexity
If wireless optical communication is used, then device complexity is reduced, but communication reliability deteriorates due to line-of-sight requirements
Solution Approach 1:
The patent transitions from directional line-of-sight optical communication to undirected omnidirectional optical emission. By changing the spatial dimension of light propagation from a focused beam to omnidirectional radiation, the system eliminates line-of-sight constraints while maintaining communication reliability, allowing the battery management system to achieve both reduced complexity and reliable communication.
3Volume of stationary object
If conventional optical communication is used, then space usage is reduced, but adaptability deteriorates due to line-of-sight constraints
Solution Approach 1:
The patent implements dynamic adaptability in battery pack design by using undirected optical communication that does not require fixed line-of-sight paths. This allows flexible arrangement of battery modules and components within the pack, enabling adaptive design configurations while maintaining efficient space utilization and reliable data transmission.
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
Enhances flexibility in battery pack design, reduces space usage, and provides secure data transmission by utilizing undirected optical signals that are resistant to interference and attacks, improving overall system reliability.
Implementation Method 1
The optical signal may be transmitted using an undirected (e.g., non-line-of-sight) light transmitter such as an Organic Light Emitting Diode
Data Source
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AI summary
In a particular embodiment, optical communications in a battery pack is disclosed that includes generating, by a module monitoring system of a battery management system, sensor data; encoding, by the module monitoring system, the sensor data into an optical signal; sending, by the module monitoring system, to a data aggregator, the sensor data as the optical signal; and decoding, by the data aggregator, the optical signal into the sensor data.