Non-Rectangular Battery Cells for Slim AR Headset Temple Arms
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Solution Overview
Problem
Augmented-reality headsets face space constraints that hinder the accommodation of traditional rectangular batteries, leading to bulkier designs and reduced operational time.
Innovation Solution
Non-rectangular shaped metal-encased batteries are designed to conform to the interior surfaces of augmented-reality headsets, allowing for increased battery storage and a more traditional shape, while providing power to various processing and presentation devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional rectangular batteries are used in augmented-reality headsets, then the battery structure is simple and easy to manufacture, but the headset becomes bulkier and cannot fit traditional glass-like shapes
Solution Approach 1:
The patent applies curvature by forming the battery can into non-rectangular shapes (curved, rounded, or contoured profiles) that conform to the interior surfaces of temple arms or frame portions. This allows the battery to fit into curved or irregular spaces within the headset, enabling traditional glass-like shapes while maintaining adequate battery capacity.
Solution Approach 2:
The patent utilizes three-dimensional shaping of the battery can, transitioning from a simple rectangular prism to complex 3D forms that can be molded to fit specific interior cavities. This dimensional transformation allows the battery to occupy irregular volumes within the headset structure, resolving the conflict between shape constraints and battery capacity.
2Duration of action of moving object
If traditional rectangular batteries are used, then manufacturing is straightforward, but the operational time is reduced due to space constraints
Solution Approach 1:
The patent changes the geometric parameters of the battery can, specifically its shape and orientation, to maximize volume utilization within available spaces. By optimizing the battery's form factor and conforming it to interior surfaces, the design increases battery capacity and operational time while maintaining manufacturability through standard forming processes.
3Quantity of substance
If the headset is made bulkier to accommodate traditional batteries, then battery capacity is sufficient, but the design deviates from traditional glasses appearance
Solution Approach 1:
The patent embeds the battery within the interior surfaces of existing headset components such as temple arms or frame portions. By nesting the battery into these existing structures, the design maintains the traditional glasses appearance from the outside while accommodating sufficient battery capacity within the internal volume.
4Volume of stationary object
If non-rectangular batteries are used to conform to interior surfaces, then the headset maintains traditional shape and increases battery storage, but manufacturing complexity increases
Solution Approach 1:
The patent employs curved and contoured forming processes to create non-rectangular battery cans that conform to interior surfaces. These forming techniques, while more complex than simple stamping, remain within the capability of standard metal forming equipment, achieving a balance between customized shape and manufacturability.
Data Source
AI summary
An example augmented-reality headset comprises a frame portion, a temple arm portion coupled with the frame portion, and a metal-encased battery cell having an exterior surface that defines a non-rectangular shape. The metal-encased battery cell is configured to be housed within the temple arm portion, and the non-rectangular shape of the exterior surface follows an interior shape of an internal surface of the temple arm portion. The augmented-reality headset also comprises one or more artificial-reality processing or presentation devices, wherein at least one of the one or more artificial-reality processing or presentation devices is configured to receive power from the metal-encased battery cell.