Flexible Battery Embedded in Headband for Wireless Headphones
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Solution Overview
Problem
Conventional wireless headphones with embedded batteries face limitations in size, weight, and usage time due to the need for a large capacity battery, which increases weight and decreases user convenience, and require additional space and external charging terminals, leading to discomfort and potential issues with foreign material introduction and sweat exposure.
Innovation Solution
A wireless headphone design featuring a flexible battery embedded in the band part, which supplies power to the headset, allowing for increased usage time, reduced size and weight, and wireless charging capabilities, eliminating the need for additional charging terminals and minimizing exposure to sweat and foreign materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a large capacity battery is used to increase usage time, then the battery capacity increases, but the weight and size of the headset increase
Solution Approach 1:
The battery system is segmented into two parts: a conventional battery embedded in the headset providing basic power, and a flexible battery integrated into the headband providing additional power. This segmentation allows the headset to achieve extended usage time without requiring a single large heavy battery in the headset itself.
Solution Approach 2:
The power supply architecture transitions from a single-dimension solution (one large battery in headset) to a two-dimension solution (conventional battery in headset + flexible battery in headband). This dimensional expansion of the power system allows weight distribution and usage time optimization.
2Duration of action of moving object
If a large capacity battery is embedded in the headset housing, then the battery capacity increases, but the size of the housing increases
Solution Approach 1:
The battery system is divided into two separate components: a conventional battery within the headset housing and a flexible battery within the headband. This segmentation eliminates the need to increase housing size while achieving extended usage time through the combined capacity of both batteries.
Solution Approach 2:
The flexible battery is extracted from the headset housing and placed in the headband, removing the volume constraint of the housing. This extraction allows the power system to expand capacity without increasing the headset housing size.
3Ease of manufacture
If a conventional battery is used, then the battery can be embedded in the headset, but additional space is required and external charging terminals are needed
Solution Approach 1:
The mechanical charging system (external charging terminals and cables) is replaced with a wireless charging system. The flexible battery in the headband incorporates a wireless charging receiver, eliminating the need for physical charging ports and cables, thereby simplifying the overall charging structure.
4Weight of moving object
If the flexible battery is used as the main battery, then the headset size and weight are reduced, but additional space for battery embedding is eliminated
Solution Approach 1:
The headband serves multiple functions: it provides structural support for the headset and simultaneously houses the flexible battery. This multi-functionality eliminates the need for separate battery compartments while reducing overall headset weight and size.
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 flexible battery embedded in the band part of the wireless headphones increases usage time, reduces the headset's size and weight, and enables wireless charging, enhancing user convenience and preventing issues related to external terminals and sweat exposure.
Implementation Method 1
a flexible battery embedded in the band part to supply power to the headset parts
Implementation Method 2
a wireless power receiving antenna configured to receive a wireless power signal transmitted from an external charging device to charge power of the flexible battery
Implementation Method 3
A shielding sheet configured to shield a magnetic field may be disposed at one side of the wireless power receiving antenna
Data Source
AI summary
A wireless headphone having a built-in flexible battery embedded therein. The wireless headphone having a built-in flexible battery includes a band part; a pair of headset parts including speaker units configured to receive a wirelessly transmitted audio signal and output the audio signal to the outside and connected to the band part; and a flexible battery embedded in the band part to supply power to the headset parts.