Flexible Battery and Light-Emitting Structure With Bend-Limiting Projections
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Solution Overview
Problem
Wearable devices require flexible and reliable power storage and light-emitting devices that are thin, lightweight, and less prone to breakage, with existing technologies failing to adequately address the need for curvature and safety in these devices.
Innovation Solution
A power storage device and light-emitting device design featuring a battery unit integrated with a member of rubber elasticity, which includes projections that contact each other when bent, providing protection and flexibility, and a light-emitting device with a light-emitting panel and secondary battery covered by a member with rubber elasticity for enhanced reliability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a battery unit is made flexible to fit curved surfaces, then adaptability is improved, but reliability deteriorates due to increased risk of breakage
Solution Approach 1:
A member with rubber elasticity is provided between the battery unit and the exterior body to cushion and absorb external impacts before they reach the battery unit. This protective structure prevents damage to the battery unit while maintaining the flexible, curved shape required for wearable devices.
2Ease of operation
If the device is made thinner and lighter for wearable applications, then ease of operation is improved, but strength deteriorates making the device more prone to breakage
Solution Approach 1:
The device combines multiple materials with complementary properties: a flexible battery unit for thinness and lightness, rubber elasticity material for shock absorption and protection, and an exterior body for structural integrity. This composite structure achieves both thinness and break resistance.
3Reliability
If projections are added to the member with rubber elasticity to prevent excessive bending, then reliability is improved, but device complexity increases
Solution Approach 1:
The member with rubber elasticity functions as a flexible protective shell that inherently provides shock absorption and shape maintenance. The projections are simple geometric features molded into this shell rather than separate components, maintaining flexibility while preventing excessive bending.
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 solution enables the creation of flexible, safe, and reliable power storage and light-emitting devices that can be reversibly bent and operate across a wide temperature range, reducing the risk of damage and improving durability.
Implementation Method 1
a member with rubber elasticity is provided between the battery unit and the exterior body
Data Source
AI summary
To provide a flexible, highly reliable power storage device or light-emitting device. The device includes a battery unit or a light-emitting unit and a member with rubber elasticity. The battery unit includes a secondary battery. The light-emitting unit includes a light-emitting element. The member with rubber elasticity is provided with a first projection and a second projection. The first projection and the second projection are arranged on a first surface of the battery unit or the light-emitting unit. The first projection and the second projection come in contact with each other when the power storage device is bent such that the first surface of the battery unit faces inward.