Battery Holding Frame Layout for Vibration Stress Relief
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional energy storage apparatuses experience local stress concentration around the boundary portion between frames aligned in different directions, leading to potential damage from external factors like vibration during charge-discharge cycles.
Innovation Solution
The energy storage apparatus incorporates a holding member with a first frame and a second frame aligned orthogonally to each other, featuring coupling portions disposed at intervals to distribute forces evenly, reducing bending moments and stresses by adjusting the distance and position of these coupling points to balance forces and distances, thereby preventing stress concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixing member is fixed to the installation location via a bolt, then the battery stack can be securely mounted, but local stress concentration occurs around the boundary portion between the restraint member and fixing member due to force amplification
Solution Approach 1:
The holding member is divided into multiple coupling portions (first coupling portion and second coupling portion) distributed at different positions along the restraint member. This segmentation distributes the mounting forces across multiple points, preventing stress concentration at any single boundary portion between the restraint member and fixing member.
Solution Approach 2:
Coupling portions are strategically positioned at specific locations along the restraint member based on local force distribution characteristics. The first coupling portion is positioned closer to the installation location where forces are smaller, while the second coupling portion is positioned farther away where forces are larger, optimizing stress distribution across different regions.
2Stability of the object's composition
If coupling portions are positioned closer to the installation location, then mounting stability is improved, but bending stress on the restraint member increases due to longer moment arm
Solution Approach 1:
The coupling portions are positioned asymmetrically along the restraint member rather than at identical distances from the installation location. The first coupling portion is positioned at a first distance while the second coupling portion is positioned at a second distance, creating an asymmetric force distribution that balances mounting stability with bending stress reduction.
Solution Approach 2:
The distances of coupling portions from the installation location are optimized as design parameters. By adjusting the first distance and second distance to specific values, the system achieves optimal balance between mounting stability (requiring coupling close to installation) and bending stress reduction (requiring coupling farther from installation).
Data Source
AI summary
A holding member holding an energy storage device is provided with: a first frame including an end member aligned with the energy storage device, and an attachment portion connected to the end member; a second frame including a body aligned with the energy storage device, and an extension extending from the body and extending along the outer surface of the end member; and a plurality of coupling portions that couple the first frame and the second frame in a first direction and disposed in the extension at an interval in a second direction. The attachment portion includes an installation portion that is installed on a fixing surface. The other coupling portion is further apart from a center line extending in the second direction of the end member than a coupling portion closest to the installation portion.