Flat Inductive Lighting System for Compact Wireless Power Transfer
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Solution Overview
Problem
Conventional lighting systems with LEDs or OLEDs face design restrictions and high manufacturing costs due to bulky drivers and the need for electrical contacts, which can be prone to pollution, humidity, and safety hazards, especially in environments where wireless charging is preferred.
Innovation Solution
A lighting system with a flat primary coil and a light module featuring a flat secondary coil, allowing for wireless inductive power transfer without electrical contacts, and utilizing printed circuit lines and emPIC technology for cost-effective and compact design, enabling flexible placement and integration into various objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional drivers are used to power LEDs or OLEDs, then the lighting system can be powered, but the form factor becomes bulky and design flexibility is restricted
Solution Approach 1:
The patent replaces the conventional mechanical/electrical driver system with a wireless inductive power transfer system using electromagnetic fields. The primary coil in the base part generates an alternating magnetic field that induces current in the secondary coil of the light module, eliminating the need for bulky electrical contacts and drivers, thereby achieving compact form factor and enhanced design flexibility.
Solution Approach 2:
The patent introduces an electromagnetic field as an intermediary to transfer power from the base part to the light module. The primary coil generates an alternating magnetic field that serves as the medium for wireless power transmission, replacing direct electrical connections and enabling compact, contactless power delivery to the light module.
2Reliability
If electrical contacts are used to power LEDs or OLEDs, then power can be delivered, but the system becomes vulnerable to pollution, humidity, and safety hazards
Solution Approach 1:
The patent replaces the electrical contact system with a wireless inductive power transfer system. By using electromagnetic fields for power transmission, the system eliminates physical electrical contacts that are susceptible to pollution, humidity, and safety hazards, thereby significantly improving reliability and resistance to environmental harmful factors.
3Shape
If standard drivers are used with OLEDs, then the OLEDs can be powered, but the thin and flat form factor advantage of OLEDs is lost
Solution Approach 1:
The patent replaces the bulky standard driver system with a wireless inductive power transfer mechanism. The primary coil in the base part and secondary coil in the light module enable contactless power delivery, allowing OLEDs to maintain their inherent thin and flat form factor while receiving adequate power for operation.
4Ease of operation
If wireless inductive charging is implemented, then electrical contacts are eliminated, but the system requires coils and magnetic field management
Solution Approach 1:
The patent implements a wireless inductive power transfer system where the primary coil in the base part and secondary coil in the light module work together to provide contactless power delivery. This universal approach eliminates the need for electrical contacts while integrating magnetic field management into the system architecture, achieving ease of operation despite the added complexity of coil-based power transfer.
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
The solution broadens the application range, reduces manufacturing costs, and allows for the design of small, flexible light modules that can be integrated into thin objects like textiles or wallpapers, while ensuring safety and efficiency through improved magnetic field shielding and energy-saving features.
Implementation Method 1
The current through the primary coil of the transformer generates an alternating magnetic field. This alternating magnetic field generates a voltage in the secondary coil.
Implementation Method 2
This alternating magnetic field generates a voltage in the secondary coil.
Data Source
AI summary
The present invention relates to a lighting system comprising a base part (12) with at least one primary coil (18), and at least one light module (13, 14) with a secondary coil (26) adapted to inductively interact with the primary coil (18). The lighting system is characterized in that said base part (12) comprises a substrate (50) carrying said primary coil (18), the winding of which lying in one plane and forming a flat coupling area (16); the winding of the second coil (26) lies in one plane; and said light module (13, 14) comprises at least one light element (20) and a flat bottom surface, so that the light module (13, 14) is placeable with its flat surface on the flat coupling area (16).