High-Power LED Circuits with Individually Controlled Parallel Groups
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Solution Overview
Problem
High-power LED lights face inefficiencies due to voltage/current deviations among LEDs connected in parallel, leading to un-optimized operation conditions and reduced lifespan, and require specific LED types for desired light angular-spans, complicating manufacturing.
Innovation Solution
A system with parallel LED groups connected in series, each powered individually by a separate output and controlled by a subsystem to adapt to their characteristics, allowing for adjustable light angles and angular-spans, and using a multi-output power circuit with transformers and control mechanisms for optimal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If LEDs are connected in parallel with the same voltage drive, then the circuit is simple to implement, but voltage/current deviations cause un-optimized operation and reduced power efficiency
Solution Approach 1:
The patent segments the LED array into multiple independent groups, each with its own current drive circuit. This allows individual optimization of each group's operating current based on its specific characteristics, resolving the contradiction between simple parallel connection and optimized power efficiency.
2Ease of operation
If LEDs are connected in parallel with the same voltage drive, then the control is simplified, but operation conditions become un-optimized and lifespan is reduced
Solution Approach 1:
The patent divides the LED array into multiple groups with independent control circuits, enabling individual current optimization for each group. This segmentation allows the system to achieve both simplified control architecture and extended LED lifespan through optimized operating conditions.
Solution Approach 2:
The patent implements variable current control for each LED group based on their specific characteristics. By adjusting the operating current parameter individually for each group, the system optimizes both reliability and ease of operation.
3Illumination intensity
If specific LED types are selected for desired light angular-spans, then the lighting performance is optimized, but manufacturing complexity increases
Solution Approach 1:
The patent creates a universal control system that can accommodate different LED types and configurations through programmable current control. This multi-functional approach allows the same hardware platform to serve various lighting applications without requiring specialized designs for each LED type.
Data Source
AI summary
A Light-Emitting Diode (LED) light system has a plurality of LED groups connected in parallel with each of the plurality of LED groups having one or more LEDs connected in series, a power circuit having a plurality of outputs with each output of the power circuit is electrically coupled to a respective one of the plurality of LED groups, and a control subsystem electrically coupled to the power circuit for individually controlling each output of the power circuit for controlling the operation of the corresponding LED group and adapting to the characteristics thereof. In some embodiments, at least one LED group may further have a switch and/or a light-angle controlling structure connected with the one or more LEDs in series and controlled by the control subsystem for selectively enabling or disabling the LED group and/or adjusting the light angle thereof.