DC-AC Inverter Lighting Arrangement with Battery Backup
Solution Overview
Problem
Existing lighting systems with battery backup solutions often require large drivers and batteries, and are inflexible in terms of LED configuration, which limits their compactness and functionality, especially during power outages.
Innovation Solution
A lighting arrangement that integrates a light emitter portion with a battery backup portion, featuring a DC-AC converter and microcontroller unit, allowing for a smaller battery size and variable LED configuration based on battery voltage, with a circuit design that includes a rectifier, IC chip, and sinusoidal pulse-width modulation to provide power during outages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a DC-DC converter is used in LED lighting systems, then the system can operate with DC power sources, but the driver and battery sizes become large and the system becomes inefficient
Solution Approach 1:
The patent replaces the DC-DC converter (electrical conversion system) with a DC-AC converter that outputs AC power compatible with LED operation. This substitution eliminates the need for complex DC-DC conversion circuitry, reducing driver size and improving overall system efficiency while maintaining reliable LED operation with DC power sources including battery backups.
Solution Approach 2:
The invention changes the electrical parameter output from the converter from DC voltage to AC voltage. By outputting AC power instead of requiring DC-DC conversion, the system achieves more efficient power delivery to LEDs, smaller component sizes, and better battery utilization while maintaining compatible operation with LED lighting requirements.
2Use of energy by moving object
If a DC-DC converter is used to ensure efficient power delivery, then power conversion is possible, but the converter size and complexity increase
Solution Approach 1:
The patent substitutes the complex DC-DC converter system with a DC-AC converter that simplifies the power conversion architecture. This replacement reduces device complexity and converter size while maintaining efficient power delivery to LEDs, as the AC output is more naturally compatible with LED driver circuitry and power distribution.
Solution Approach 2:
The invention extracts and eliminates the unnecessary DC-DC conversion stage from the power delivery system. By directly converting DC battery power to AC output that LEDs can efficiently utilize, the system removes the complex intermediate conversion step, reducing overall converter complexity and size while preserving power conversion efficiency.
3Device complexity
If fixed LED configurations are used, then the circuit design is simplified, but the system lacks flexibility in adapting to different battery voltages
Solution Approach 1:
The patent implements dynamic LED configurations where the number and arrangement of LEDs can vary based on battery voltage levels. The AC output from the DC-AC converter enables flexible power distribution that can accommodate different LED string configurations, allowing the system to adapt to various battery voltages while maintaining relatively simple circuit design through standardized AC power delivery architecture.
Solution Approach 2:
The invention creates a universal power delivery system where the DC-AC converter provides AC output that can serve multiple LED configuration requirements. This multi-functional approach allows the same converter circuit to support different numbers and types of LEDs depending on battery voltage, achieving versatility without proportionally increasing circuit complexity.
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 a compact and efficient lighting solution with a smaller backup battery and variable LED configuration, providing reliable power during outages and allowing for aesthetic integration without increasing the overall size of the lighting unit.
Implementation Method 1
a converter portion with a DC-AC inverter downstream of the one or more batteries that directs the electrical signal to the rectifier
Implementation Method 2
circuitry for driving the plurality of light emitting diodes including a rectifier and an IC chip configured to drive said plurality of light emitting diodes with the rectified voltage provided by rectifier
Implementation Method 3
a light emitter portion having a plurality of light emitting diodes
Data Source
AI summary
A lighting arrangement can include a light emitter portion and a battery backup portion. The light emitter portion can have a plurality of light emitting diodes and circuitry for driving the plurality of light emitting diodes including a rectifier and an IC chip configured to drive the plurality of light emitting diodes with the rectified voltage provided by the rectifier. The battery backup portion can be in electronic communication with the light emitter portion and can have a battery portion with one or more batteries and a converter portion with a DC-AC inverter downstream of the one or more batteries that directs the electrical power to the rectifier and is driven by the one or batteries.