Keyboard Stylus Charging Cavity for Shorter Wireless Power Links
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Solution Overview
Problem
Existing wireless charging systems for electronic styluses and keyboards are inefficient due to long charging links and high costs, with poor portability and adhesion issues, especially when used as an integrated system with tablet computers.
Innovation Solution
A wireless charging system that includes a tablet computer, wireless keyboard, and electronic stylus, where the keyboard has a support for the tablet and a connection portion to adjustably connect the keyboard body and support, with integrated wireless coils and control modules allowing for two-level wireless charging, reducing the need for AC-DC conversion chips and enhancing portability by accommodating the stylus within the keyboard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless charging is implemented with tablet computer and electronic stylus each being provided with a wireless charging coil, then wireless charging function is achieved, but the electronic stylus is apt to fall off due to weak adhesion
Solution Approach 1:
The patent combines the adhesion function and wireless charging function into a single integrated structure. The wireless charging coil is embedded within the adhesion component, so that the same component that provides magnetic adhesion also provides wireless charging capability. This eliminates the need for separate adhesion mechanisms and charging coils, thereby improving reliability without significantly increasing structural complexity.
2Adaptability or versatility
If wireless keyboard and electronic stylus are accommodated as accessories, then functionality is complete, but portability is comparatively poor due to additional accommodation requirements
Solution Approach 1:
The patent implements a nested structure where the electronic stylus is accommodated within the wireless keyboard. The keyboard contains an accommodation cavity that holds the stylus, and the stylus itself contains its own battery and wireless receiving coil. This nested arrangement allows the system to maintain complete functionality (keyboard + stylus) while reducing the overall footprint and improving portability, as the stylus does not need to be carried separately.
3Reliability
If a plurality of chips are disposed in a charging link, then charging control is comprehensive, but costs are comparatively high
Solution Approach 1:
The patent designs the wireless charging system with multi-functional components that can operate in different modes. The keyboard's wireless receiving coil and control module serve dual purposes: receiving charging power from the tablet and transmitting power to the stylus. This eliminates the need for separate charging control chips in each device, reducing the total number of chips in the charging link while maintaining comprehensive charging control across all devices.
4Productivity
If traditional wireless charging link is used, then charging function is achieved, but charging efficiency is reduced due to long charging link and high chip quantity
Solution Approach 1:
The patent extracts and eliminates unnecessary intermediate components from the traditional wireless charging link. By having the keyboard directly receive power from the tablet and directly transmit to the stylus without requiring separate charging management chips in each device, the charging link is shortened and simplified. This reduction in the number of chips and shortened signal transmission path directly improves charging efficiency while reducing system complexity.
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
This solution improves charging efficiency and reliability, reduces costs, and enhances portability by enabling direct alternating current transmission and accommodating the stylus within the keyboard, thus addressing the inefficiencies and portability issues of existing systems.
Implementation Method 1
A first wireless output coil is connected to the first wireless output control module. A first wireless receiving coil receives an electromagnetic signal sent by the first wireless output coil
Implementation Method 2
The first wireless receiving coil receives an electromagnetic signal sent by the first wireless output coil. The first wireless receiving control module is connected to the first wireless receiving coil. The first charging control module is connected to the first wireless receiving control module. The second battery is connected to the first charging control module
Implementation Method 3
A second wireless output coil is disposed in the accommodation cavity. The second wireless output coil is connected to the first wireless receiving coil. The second wireless output coil is configured to wirelessly charge the electronic stylus accommodated in the accommodation cavity
Data Source
AI summary
This application discloses a wireless charging system, and relates to the field of terminal technologies. The wireless charging system includes a tablet computer, a wireless keyboard, and the electronic stylus. The wireless keyboard includes a keyboard body, a support, and a connection portion. The connection portion includes an accommodation cavity provided with an opening at one end. A first sending apparatus is disposed in the tablet computer. A first receiving apparatus is disposed in the keyboard body. A second sending apparatus is disposed in the accommodation cavity. The first receiving apparatus receives an alternating current signal sent by the first sending apparatus, and then directly transmits the alternating current signal to the second sending apparatus. The second sending apparatus is configured to wirelessly charge the electronic stylus accommodated in the accommodation cavity.