Enclosed Lighting Battery Management via Impedance Analysis
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Solution Overview
Problem
The variability in deployment conditions and management of multi-chemistry rechargeable batteries in encased lighting modules leads to inconsistent battery lifetimes, with restricted heat dissipation in enclosed environments potentially causing early failure.
Innovation Solution
A controller within the lighting module manages the battery by analyzing its impedance and electrical reflectivity, determining state of charge and predicted cycle life, and regulating recharging cycles based on temperature to extend battery life and accurately communicate its status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the battery is deployed in an enclosed lighting module, then the lighting module provides integrated illumination and power, but heat dissipation is restricted causing early battery failure
Solution Approach 1:
The patent introduces a thermal management intermediary system including heat sinks, thermal conductive materials, and ventilation channels that mediate between the battery and the enclosed environment, facilitating heat transfer from the battery to the surrounding air without requiring the battery to be exposed externally
Solution Approach 2:
The patent creates a controlled thermal environment around the battery through thermal insulation materials and regulated air flow channels, effectively isolating the battery from extreme external temperature variations while maintaining optimal operating temperature through active thermal management
2Productivity
If standard charge/discharge analysis is used, then the process is simple and quick, but accuracy is insufficient leading to improper battery management
Solution Approach 1:
The patent implements a feedback-based battery management system that continuously monitors multiple parameters including voltage, current, temperature, and impedance, then uses this feedback to dynamically adjust charging rates and discharge limits, achieving both high productivity and high precision through closed-loop control
Solution Approach 2:
The patent employs multi-parameter analysis (voltage, current, temperature, impedance) rather than single-parameter monitoring, and dynamically changes operational parameters such as charging current and voltage thresholds based on real-time battery state, enabling accurate battery management while maintaining efficient charge/discharge cycles
3Adaptability or versatility
If the battery operates in high ambient temperatures, then the lighting module can function in various environments, but the battery lifetime decreases due to thermal stress
Solution Approach 1:
The patent applies beforehand cushioning by pre-cooling the battery before high-temperature operation, providing thermal cushioning layers around the battery, and pre-adjusting charging parameters to reduce thermal stress accumulation, thereby protecting the battery from thermal damage during extended high-temperature operation
Solution Approach 2:
The patent implements periodic thermal management actions including intermittent cooling cycles, periodic impedance measurements to detect early signs of thermal stress damage, and alternating between active and passive cooling modes to extend battery lifetime in high ambient temperatures while maintaining environmental adaptability
Data Source
AI summary
Embodiments of the present disclosure provide methods, systems, and apparatuses related to managing a rechargeable battery in an enclosed lighting module. Other embodiments may be described and claimed.