Curved Battery Pack Case with Uneven Wall for Structural Integrity
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Solution Overview
Problem
The existing battery packs are not adequately designed to accommodate the increasing demand for curved mobile electronic devices, leading to inefficiencies in power supply and potential structural issues due to limited curvature and material deformation.
Innovation Solution
A battery pack design featuring a case with concave and convex main walls, an electrode assembly, and an uneven portion on the convex wall, allowing for a predetermined curvature and improved structural integrity, along with a cap plate and electrode pin for electrical connection, which can be curved to match the device's shape and distribute pressure effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a battery pack is designed with a curved shape to match mobile electronic devices, then the adaptability to curved devices is improved, but the structural integrity and material deformation resistance deteriorate
Solution Approach 1:
The battery pack case is designed with a curved shape matching the mobile electronic device contour. The first main wall has a concave curvature and the second main wall has a convex curvature, both with predetermined radii of curvature (e.g., 200 mm or greater). This curvature design allows the battery pack to adapt to curved devices while maintaining structural integrity through optimized geometric form.
Solution Approach 2:
An uneven portion is formed at the center of the second main wall with a thickness smaller than other portions. This local variation in thickness creates a pressure distribution feature that enhances structural integrity at the curved surface while maintaining overall adaptability to the device shape.
2Adaptability or versatility
If the radius of curvature is increased to match larger device curves, then the adaptability to various device shapes is improved, but the material deformation resistance deteriorates
Solution Approach 1:
The radius of curvature is set to a specific value (200 mm or greater) to balance adaptability to device shapes with material deformation control. This parameter optimization ensures the battery pack can match various device curves while maintaining manufacturing precision and material integrity.
Solution Approach 2:
The uneven portion with reduced thickness at the center of the second main wall creates a localized pressure distribution feature that compensates for the large radius of curvature, preventing material deformation while maintaining the ability to match device shapes.
3Volume of moving object
If the battery pack is designed to be curved, then the spatial utility in mobile devices is improved, but the pressure distribution and safety deteriorate
Solution Approach 1:
The uneven portion at the center of the second main wall with smaller thickness creates a specific pressure distribution pattern. This local structural feature ensures that internal pressure is effectively distributed across the curved surface, enhancing safety and reliability while maintaining the curved spatial configuration for optimal device integration.
Data Source
AI summary
A battery pack is disclosed. In one aspect, the battery pack includes an electrode assembly and a case accommodating the electrode assembly, wherein the case includes first and second walls facing each other and respectively concave and convex with respect to the electrode assembly. The battery pack also includes an uneven portion formed on the second wall.