Magnetic Earbud Charging Adapter for Continuous In-Ear Playback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless earbuds have limited playtime due to size and weight constraints, and existing charging solutions either disrupt playback or are cumbersome, such as quick charging or charging cases that prevent use during recharging.
Innovation Solution
A charging adapter with attachable batteries that magnetically connect to earbuds, allowing charging while in use, and a charging case that independently or concurrently charges both the adapters and earbuds, enabling continuous use and recharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If wireless earbuds use smaller batteries to meet size and weight constraints, then portability and comfort are improved, but playtime duration deteriorates
Solution Approach 1:
The charging system is divided into separate components: a charging adapter with attachable batteries that can be independently replaced. This allows the earbuds to maintain lightweight design while the charging adapter provides extended battery capacity, resolving the contradiction between weight and playtime duration.
Solution Approach 2:
A charging adapter serves as an intermediary device between the earbuds and power source. The adapter contains replaceable batteries that magnetically connect to the earbuds, enabling extended playtime without increasing earbud weight, as the battery capacity is housed in the separate adapter component.
2Duration of action of moving object
If wireless earbuds use larger batteries to extend playtime, then duration of action is improved, but size and weight increase
Solution Approach 1:
The battery system is segmented into the earbud's internal battery and the charging adapter's external batteries. This allows extended playtime capacity to be housed in the adapter rather than the earbuds themselves, maintaining lightweight earbud design while providing longer overall usage duration through multiple attachable battery units.
3Reliability
If existing charging solutions are used, then charging function is provided, but playback is disrupted or operation becomes cumbersome
Solution Approach 1:
The charging adapter with attachable batteries enables continuous playback without interruption. When the earbud battery depletes, users can simply replace the charging adapter with a fresh one, maintaining continuous audio playback without the need to pause or return to a charging case, thus ensuring both reliable charging function and ease of continuous operation.
Solution Approach 2:
The charging system transitions from static charging (earbuds placed in a fixed charging case) to dynamic charging (replaceable charging adapters that can be attached and detached). This dynamic approach allows users to swap adapters on-the-go, maintaining playback continuity and significantly improving ease of operation during mobile use.
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 continuous audio playback and charging of wireless earbuds without the need to interrupt use, providing extended playtime and convenience through simultaneous charging and operation.
Implementation Method 1
a magnetic interface that (i) attracts a charging adapter and (ii) aligns electrodes of the charging adapter with electrodes of the magnetic interface
Data Source
AI summary
Examples described herein relate to a charging system for wireless earbuds involving charging adapters that are attachable to the wireless earbuds. In some implementations, the charging adapter is attachable to an external surface of an earbud using a magnetic or mechanical interface that align electrodes of the charging adapter with electrodes on the wireless headset, allowing an internal battery of the earbud to draw current and charge from the charging adapter while the earbud is in-ear. Then, when the internal battery is and recharged using a charging case or wall charger, the charging adapter can be detached from the earbud.