Induction Charging Station Secondary Coil Energy Harvesting
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Solution Overview
Problem
Inductive charging systems often result in significant energy loss due to the excess energy generated by the charging station not being utilized by the portable device, leading to inefficiency and economic waste.
Innovation Solution
An induction charging system with both a primary and a secondary induction coil, where the primary coil creates an electromagnetic field and the secondary coil converts excess energy into electric current without interfering with the portable device's charging process, allowing for the simultaneous charging of two devices without additional energy input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single induction coil is used to charge a portable device, then the device can be charged wirelessly, but significant energy is lost because the device does not utilize all available energy in the electromagnetic field
Solution Approach 1:
The patent segments the energy harvesting function by introducing a secondary induction coil that operates independently from the primary coil. The primary coil continues to charge the portable device while the secondary coil captures excess energy, dividing the energy utilization into separate functional segments that together improve overall system efficiency
Solution Approach 2:
The induction charging station is enhanced with multi-functionality by adding a secondary induction coil that serves an additional energy harvesting function. The same electromagnetic field generated by the primary coil now serves dual purposes: charging the portable device through the primary coil and capturing excess energy through the secondary coil, thereby improving energy utilization without requiring separate charging systems
2Loss of energy
If a secondary induction coil is added to capture excess energy, then energy efficiency is improved, but the device complexity increases
Solution Approach 1:
The secondary induction coil is positioned within the housing of the induction charging station, nested alongside the primary coil structure. This nesting arrangement allows both coils to coexist in a compact configuration, capturing excess energy without significantly increasing the external footprint or visual complexity of the charging station
3Loss of energy
If the secondary coil captures excess energy, then energy waste is reduced, but the charge current to the primary device may be affected
Solution Approach 1:
The system maintains continuous useful action for the primary charging function while the secondary coil operates simultaneously. The primary coil continues to provide stable charging current to the portable device without interruption, while the secondary coil continuously captures excess energy from the electromagnetic field, ensuring both functions operate independently and concurrently without compromising charge current stability
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 system effectively harnesses excess energy, reducing waste and increasing efficiency by powering two devices using the same energy input, with minimal impact on the charge current delivered to the primary device.
Implementation Method 1
The induction charging station utilizes an induction coil to create an alternating electromagnetic field
Implementation Method 2
The portable device comprises a second induction coil that interacts with the electromagnetic field and converts the energy back into electric current to charge the battery
Implementation Method 3
the secondary induction coil converts excess energy from that electromagnetic field into electric current to charge a secondary device
Data Source
AI summary
An induction charging system (100) includes: (i) an induction charging station (10) having: an emitting primary induction coil (14); a receiving secondary induction coil (18); and a primary dock (20) for a primary chargeable device; (ii) a primary chargeable device (24) configured to reversibly engage the primary dock and comprising a receiving induction coil (26); and (iii) a secondary device in communication with the secondary induction coil and configured to receive energy from the secondary induction coil, wherein the secondary induction coil is configured to receive excess energy from the primary induction coil without interfering with the receiving induction coil.