Wireless Power Sharing Coil for Selective Multi-Device Charging
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Solution Overview
Problem
Existing electronic devices lack an efficient method for wirelessly transmitting or receiving power, particularly in scenarios where multiple devices need to be charged simultaneously and selectively.
Innovation Solution
An electronic device equipped with a housing, a coil for wireless power transmission, communication circuitry, a battery, an interface for wired power reception, and a processor that executes instructions to identify external devices, manage power transmission between devices, and display screens for user input to select power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless power transmission is implemented using a coil, then power can be transmitted to external electronic devices, but the device cannot simultaneously charge its own battery and transmit power to multiple external devices efficiently
Solution Approach 1:
The power management system is segmented into distinct operational modes (first state and second state) that can be selectively activated. In the first state, the coil transmits power to external devices while the battery charges independently. In the second state, the battery directly powers external devices wirelessly. This segmentation allows the system to handle multiple power transmission scenarios without requiring complex real-time arbitration logic.
Solution Approach 2:
The system dynamically switches between two power transmission modes based on operational conditions. The processor identifies the current state and selectively activates either the first state (coil-based transmission with separate battery charging) or the second state (battery-based wireless transmission), enabling adaptive power management that simplifies control while maintaining versatility.
2Reliability
If the device charges its own battery through wired connection, then power reception is reliable, but the device cannot simultaneously wirelessly charge external electronic devices
Solution Approach 1:
The power reception and transmission functions are segmented into separate operational states. The first state enables simultaneous wired battery charging and wireless power transmission to external devices through the coil. The second state enables wireless power transmission directly from the battery to multiple external devices. This segmentation resolves the contradiction by providing dedicated modes for each scenario.
Solution Approach 2:
The electronic device is designed with multi-functionality to handle both wired and wireless power scenarios. The interface accepts wired power input while the coil and battery enable wireless transmission capabilities. The system can universally support multiple charging configurations: wired-only, wireless-only, or simultaneous wired reception with wireless transmission, making it adaptable to various user needs while maintaining reliable power reception through the dedicated wired interface.
3Adaptability or versatility
If power is transmitted to multiple external devices simultaneously, then charging versatility is improved, but power distribution control becomes complex
Solution Approach 1:
Multi-device charging is segmented into two simplified control scenarios. In the first state, the coil transmits power to external devices while the battery charges separately, providing implicit power distribution control. In the second state, the battery wirelessly transmits power to multiple external devices with control simplified to basic on/off functionality. This segmentation eliminates the need for complex real-time power allocation algorithms while maintaining multi-device charging capability.
Solution Approach 2:
The power distribution system operates with minimal user intervention. The processor automatically identifies the operational state and manages power flow accordingly. Users simply need to place devices on the charging surface, and the system self-manages the power distribution between the battery, coil, and multiple external devices without requiring manual configuration or complex control inputs.
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 efficient wireless power transmission and reception between electronic devices, allowing for selective charging of batteries or external devices based on state of charge and user input, thereby optimizing power distribution and device charging.
Implementation Method 1
A wireless charging method includes a magnetic induction method capable of charging an electronic device such as a smartphone, a wireless earphone and a smart watch using a coil
Implementation Method 2
a magnetic resonance method capable of charging an electronic device such as home appliances, a lighting device, and an electric vehicle (EV) using the coil or a resonator
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing, an interface configured to receive power by wire, a coil disposed on a side of the housing configured to transmit wirelessly the power to an external electronic device different from the electronic device, communication circuitry configured to communicate with the external electronic device, a battery, memory storing one or more computer programs, and one or more processors communicatively coupled to the coil, the communication circuitry, the battery, the interface and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the electronic device to identify an external electronic device that is in contact with one surface of a housing on which a coil is disposed, request a display of a screen for selective transmission of the power, and transmit power to the battery among the battery and the external electronic device.