Integrated LED Driver Battery Charging Circuit
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Solution Overview
Problem
Existing emergency lighting systems duplicate line interface circuitry, leading to increased cost and vulnerability to power surges and fluctuations, while also lacking efficient communication between the ballast or driver and battery backup module.
Innovation Solution
Integrating the battery charge function into the LED driver, eliminating duplication of line interface circuitry and enabling a single line interface circuit to provide input power conversion for both battery charging and normal operation, with enhanced communication and power sourcing capabilities between the LED driver and battery backup unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate battery backup unit and ballast/driver are used with duplicated line interface circuitry, then battery charging function and normal operation can be maintained, but cost increases and vulnerability to power surges and fluctuations increases
Solution Approach 1:
The patent combines the battery backup unit and ballast/driver into a single integrated device. The line interface circuitry is consolidated into one shared component that serves both the battery charging function and the normal lighting operation, eliminating the duplication present in separate units. This merging reduces vulnerability to power surges while maintaining full functionality.
Solution Approach 2:
The integrated device performs multiple functions through shared components. The single line interface circuitry handles both AC power input for normal operation and battery charging functions. The controller manages both lighting control and battery management, reducing overall system complexity and vulnerability points.
2Reliability
If separate battery backup unit and ballast or driver are used, then battery charging and power conversion functions can be provided, but cost and possibility of failure increase
Solution Approach 1:
The patent merges the battery backup unit and ballast/driver into one integrated device, reducing the total quantity of components. This consolidation decreases the number of potential failure points while maintaining all necessary functions through shared circuitry and unified control.
3Loss of information
If separate battery backup unit and ballast or driver are used, then power conversion and load transfer switching can be accomplished, but communication efficiency between components decreases
Solution Approach 1:
The integration of battery backup and ballast/driver into a single device eliminates communication losses between separate units. The controller has direct access to both lighting and battery management functions, enabling efficient real-time communication and coordination without external interfaces.
Data Source
AI summary
Battery charge function may be in an LED driver which eliminates the duplication of line interface circuitry. A single line interface circuit provides the input power conversion for both the battery charge function and normal operation of the LED driver. During a loss of power, the LEDs may be controlled using power from the battery backup module.