Wireless Charging Modality Switching for Range and Efficiency
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Solution Overview
Problem
Conventional wireless charging devices are limited by their range and efficiency, requiring devices to be stationary during charging and often necessitating significant hardware investments for far-field charging, while near-field charging is less efficient and inconvenient for portable devices.
Innovation Solution
A wireless charging device capable of providing power via multiple modalities, including near-field, far-field, and wired connections, dynamically selecting the most efficient method based on device compatibility and availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If far-field wireless charging is implemented, then charging range is extended, but hardware complexity and cost increase significantly
Solution Approach 1:
The wireless charging device is designed to support multiple charging modalities (near-field, far-field, and wired connections) within a single system. The device can dynamically switch between different power transmission methods based on the charging requirements and available modalities, eliminating the need for separate dedicated far-field charging hardware while extending charging range.
2Device complexity
If near-field wireless charging is used, then hardware investment is reduced, but charging efficiency decreases and device mobility is limited
Solution Approach 1:
The system dynamically selects the optimal power transmission modality based on real-time conditions such as device distance, power requirements, and available modalities. This dynamic adaptation allows the system to switch from near-field to far-field or wired charging when efficiency is compromised, maintaining high charging efficiency without requiring excessive hardware investment.
3Ease of operation
If wireless charging is implemented, then device portability is improved, but charging stability and reliability decrease due to range limitations
Solution Approach 1:
The system introduces an intermediary selection mechanism that evaluates multiple power transmission modalities and selects the most appropriate one for each charging scenario. This intermediary layer ensures stable and reliable power transmission by choosing the modality that best balances portability benefits with charging stability, whether near-field, far-field, or wired connection.
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
Enhances charging flexibility and efficiency by allowing devices to be charged wirelessly over various distances and configurations, optimizing power transmission based on available modalities.
Implementation Method 1
a first power transmitter of the plurality of power transmitters is configured to wirelessly transmit power to a second device in a near-field mode
Implementation Method 2
a second power transmitter of the plurality of power transmitters is configured to wirelessly transmit power to the second device in a far-field mode
Data Source
AI summary
A wireless charging device capable of charging compatible devices via multiple power transmission modalities is disclosed. The wireless charging device comprises multiple power transmitters, each capable of transmitting power to a device via one or more power transmission modalities. After detecting the presence of a compatible device or a change it the compatible device's position, the wireless charging device configures the appropriate power transmitter for power transmission to the compatible device. Additionally, the wireless charging device can send playback settings to the compatible device to accommodate changes in the power transmission modality to, for example, reduce power consumption of the compatible device.