Wireless Power Reception in Mobile Devices via Auxiliary Battery
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Solution Overview
Problem
Conventional mobile devices require a wired connection to portable chargers with auxiliary batteries, which is inconvenient for users.
Innovation Solution
A mobile device design that includes a main battery, a wireless power receiving antenna, and a power manager to selectively use power from either the main battery or an auxiliary battery wirelessly transferred from an accessory, allowing operation without a wired connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wired connection is used to connect the portable charger to the mobile device, then reliable power transfer is achieved, but user convenience deteriorates
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless electromagnetic field-based power transfer system. The portable charger uses a transmitting antenna to generate electromagnetic fields that are received by a receiving antenna in the mobile device, eliminating the need for physical cable connections while maintaining power transfer functionality.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium to transfer power between the portable charger and mobile device. The transmitting antenna converts electrical energy to electromagnetic energy, which then propagates through space to the receiving antenna that converts it back to electrical energy, serving as a non-contact intermediary for power transfer.
2Ease of operation
If wireless power transfer is implemented, then user convenience is improved, but power transfer efficiency deteriorates
Solution Approach 1:
The patent implements dynamic power source selection where the power manager continuously monitors the status of both the main battery and auxiliary battery, and dynamically switches between them based on real-time conditions. This dynamic adaptation optimizes power transfer efficiency by selecting the most efficient power source at any given moment.
Solution Approach 2:
The patent changes the operational parameters of the power system by introducing an auxiliary battery as an additional power source and implementing wireless power transfer. The power manager adjusts power allocation and transfer parameters based on the availability and status of different power sources, optimizing overall system efficiency.
3Device complexity
If only the main battery is used as power source, then device structure is simplified, but power supply flexibility deteriorates
Solution Approach 1:
The patent segments the power supply system into two independent power sources: the main battery integrated into the mobile device and the auxiliary battery in the portable charger. This segmentation allows each battery to operate independently and be managed separately, providing flexibility in power supply options while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
The power manager implements multi-functionality by managing multiple power sources (main battery and auxiliary battery) and multiple power transfer modes (wired and wireless). The system can universally adapt to different power supply scenarios, selecting the appropriate power source and transfer method based on user needs and device status.
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 convenient and efficient power management by allowing the mobile device to operate using power from an auxiliary battery when the main battery is depleted or not present, eliminating the need for a wired connection.
Implementation Method 1
a first antenna to receive power wirelessly transferred from an auxiliary battery of an accessory coupled to the mobile device
Data Source
AI summary
A mobile device includes at least one internal device including a processor to control the mobile device, an area including a main battery, a first antenna to receive power wirelessly transferred from an auxiliary battery of an accessory coupled to the mobile device, and a power manager. The power manager selects the main battery or the auxiliary battery of the accessory as a power source for the at least one internal device, supplies the at least one internal device with power from the main battery when the main battery is selected as the power source, and supplies the at least one internal device with the power received through the first antenna when the auxiliary battery is selected as the power source.