Earbud Charging Case With UV-C Sterilization Power Control
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Solution Overview
Problem
Wireless earbuds often harbor microorganisms due to frequent handling and sharing, leading to potential ear infections, as existing charging cases do not effectively sterilize the earbuds.
Innovation Solution
A charging case equipped with UV LEDs that generate UV-C radiation for automatic sterilization of the earbuds while charging, featuring a control unit to manage power distribution between charging and sterilization, and a compact, portable design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV LEDs are added to the charging case for sterilization, then the sterilization effectiveness is improved, but the device complexity increases
Solution Approach 1:
The patent combines the sterilization function and charging function into a single integrated charging case. The UV LEDs are integrated within the charging case structure, allowing simultaneous or sequential operation of charging and sterilization without requiring separate devices. This merging approach improves reliability by ensuring both functions are available while managing device complexity through unified design.
Solution Approach 2:
The charging case is designed to perform multiple functions: charging the earbuds and sterilizing them using UV-C radiation. The control unit manages power distribution to enable both charging circuitry and UV LED operation from a single battery power source. This multi-functionality resolves the contradiction by making one device serve multiple purposes, improving sterilization effectiveness while avoiding the need for additional separate sterilization devices.
2Reliability
If UV LEDs are activated for sterilization, then the microbial load is reduced, but the energy consumption increases
Solution Approach 1:
The control unit is configured to activate the UV LEDs for sterilization during specific time periods, such as when the charging case is closed or during idle charging periods. The sterilization function operates periodically rather than continuously, reducing overall energy consumption while still achieving effective microbial load reduction. This periodic activation allows the system to balance hygiene quality improvement with energy conservation.
Solution Approach 2:
The control unit dynamically adjusts power distribution parameters between charging circuitry and UV LEDs based on battery charge levels and operational conditions. When battery charge is sufficient, more power can be allocated to UV LEDs for effective sterilization. When charge is low, power allocation is adjusted to prioritize charging, thus maintaining hygiene quality while managing energy consumption through parameter optimization.
3Adaptability or versatility
If the charging case includes both charging and sterilization functions, then the versatility is improved, but the manufacturing cost increases
Solution Approach 1:
The charging case is designed with modular components that can be manufactured separately and assembled. The UV LED module, charging circuitry, control unit, and battery are distinct segments that can be produced using standard manufacturing processes and then integrated. This segmentation allows for economies of scale in component production while maintaining functional versatility, thus improving adaptability without proportionally increasing manufacturing cost.
Solution Approach 2:
The control unit implements intelligent power management that optimizes the operation of both charging and sterilization functions. By dynamically adjusting operational parameters such as UV LED activation timing and power distribution, the system achieves high functional versatility while managing power consumption efficiently. This parameter optimization reduces the need for oversized components and enables the use of cost-effective parts that meet performance requirements without excessive cost.
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
The UV-C radiation effectively reduces microbial load by at least 99.9% during charging, promoting hygiene and health while maintaining a balance between charging and sterilization functions.
Implementation Method 1
UV LEDs for generating ultraviolet radiations in the far UV-C region to irradiating the inner volume of the charging case
Data Source
AI summary
A charging case having one or more charging docks for charging one or more earbuds. The charging case can further have UV LEDs for automatically sterilizing the earbuds while charging.