Wireless Charging System with Rapid Capacitor Pre-Charge
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Solution Overview
Problem
Conventional battery chargers for portable electronic devices are inconvenient due to the need for multiple chargers, tangled cords, and slow charging rates, which limit device usage during charging.
Innovation Solution
A wireless charging system with an inductive power supply and a secondary power circuit that includes a charge storage capacitor, allowing for rapid charging of the battery even after the device is removed from the charger, and a communication system to optimize charging parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional corded battery chargers are used, then charging function is provided, but multiple chargers are needed for different devices, cords become tangled, and plugging/unplugging is required each time
Solution Approach 1:
The wireless charging base uses electromagnetic induction to charge multiple types of battery-operated devices without requiring device-specific chargers. The base can charge remote controls, mobile phones, tablets, and other portable electronic devices with battery packs, eliminating the need for multiple device-specific chargers and cords.
Solution Approach 2:
The patent replaces the mechanical connection system (plugs and cords) with a wireless electromagnetic induction system. The charging base generates an alternating magnetic field that induces current in the battery pack's coil, eliminating the need for physical plugging and unplugging of cords.
2Productivity
If conventional battery chargers are used, then batteries are recharged, but charging rate is slow and devices must remain on charger for extended periods
Solution Approach 1:
The system performs preliminary charging action by rapidly transferring energy to the battery pack while it remains on the wireless charging base. The high-power electromagnetic induction charging provides a charging boost that quickly replenishes battery energy, reducing the overall time the device needs to remain charged.
Solution Approach 2:
The charging system dynamically adjusts the power transfer based on the battery's charging state. The base can provide high-power charging when the battery needs rapid replenishment and automatically stops or reduces power when the battery is sufficiently charged, optimizing both charging speed and time management.
3Ease of operation
If wireless charging system is used, then cord tangling is eliminated and plugging/unplugging is not needed, but charging rate remains limited by battery characteristics
Solution Approach 1:
The patent merges wireless charging convenience with high-rate charging capability by combining the electromagnetic induction base with a rapid charging circuit. The base integrates both the wireless power transfer function and the high-current charging function, allowing users to benefit from both wireless convenience and fast charging without compromising either aspect.
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 quick and efficient battery charging, reducing the need for multiple chargers and eliminating cord tangling, while allowing the device to operate briefly without the charger.
Implementation Method 1
A wireless charging system with an inductive power supply and a secondary power circuit
Implementation Method 2
The secondary power circuit wirelessly receives power from the inductive power supply
Data Source
AI summary
The present invention provides wireless power supply systems that wirelessly supply power to a remote device for rapidly charging a charge storage capacitor, which charges a battery with the power stored in the charge storage capacitor. This allows the remote device to be positioned near the inductive power supply for rapid charging of the charge storage capacitor and allows battery charging to continue even after the remote device is removed from the inductive power supply.