Wearable Flexible Battery Layout for Lightweight Face-Worn Devices
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Solution Overview
Problem
Existing wearable devices face challenges in reducing weight and increasing design diversity while maintaining or enhancing battery capacity, as conventional prismatic type batteries increase weight and limit design freedom.
Innovation Solution
A wearable device design featuring a body unit with embedded function modules and a wearing unit containing a flexible battery, which is detachably coupled to the body unit, providing power to the function modules and allowing for various shapes and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a prismatic type battery or coin type battery is used to increase battery capacity, then the battery capacity increases, but the weight of the HMD device increases remarkably
Solution Approach 1:
The patent applies flexible thin-film batteries instead of conventional prismatic or coin-type batteries. These flexible batteries can be conformally mounted on curved surfaces of the HMD device, achieving high battery capacity while maintaining lightweight characteristics. The flexible nature allows efficient space utilization without adding significant weight.
Solution Approach 2:
The patent transitions from three-dimensional bulky battery forms to two-dimensional flexible thin-film batteries that can be conformally mounted on surfaces. This dimensional change allows the battery to be integrated into the HMD device's structure without occupying excessive volume or adding significant weight, while still providing high capacity.
2Quantity of substance
If the space for mounting the battery is increased to achieve high condensing capacity, then the battery capacity increases, but the design freedom decreases
Solution Approach 1:
The flexible thin-film battery can be conformally mounted on various curved surfaces and irregular shapes of the HMD device. This flexibility allows the battery to adapt to different design configurations without requiring dedicated large-volume spaces, thereby maintaining design freedom while achieving high capacity.
Solution Approach 2:
By transitioning to two-dimensional flexible batteries, the patent enables the battery to be integrated into the surface area of the device rather than requiring three-dimensional volume. This allows high capacity batteries to be mounted on various device shapes and configurations without compromising design freedom.
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 use of flexible batteries embedded in the wearing unit reduces device weight, enables diverse designs, and improves wearability by minimizing the need for space in the body unit, allowing for easy battery replacement and reduced slippage.
Implementation Method 1
at least one flexible battery embedded in the wearing unit to provide power to the body unit
Data Source
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AI summary
A wearable device is provided. A wearable device according to an exemplary embodiment of the present invention comprises: a body unit comprising at least one function module; a wearing unit that has a predetermined length and is connected to the body unit such that the body unit remains worn on the user's face; and at least one flexible battery embedded in the wearing unit so as to provide the body unit with power such that the function module can be driven.