Battery Pack Housing Ribs for Load Distribution and Vibration Damping
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Solution Overview
Problem
Existing battery packs face challenges in durability and reliability due to uneven distribution of load and lack of rigidity in supporting structures.
Innovation Solution
A battery pack design featuring a housing with protrusions and ribs that distribute the load and enhance rigidity by connecting to the battery module through bosses and ribs, ensuring stable fastening and vibration absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery module is supported by a simple housing structure, then the manufacturing cost is reduced, but the durability and reliability deteriorate due to uneven load distribution
Solution Approach 1:
The housing structure is segmented into multiple functional components: housing protrusions for positioning, housing ribs for load distribution, and housing bosses for fastening. This segmentation allows each component to perform its specific function optimally, improving overall reliability without excessive complexity
Solution Approach 2:
Different parts of the housing structure have different local qualities: the housing protrusions provide positioning, the housing ribs provide rigidity and load distribution, and the housing bosses provide fastening points. This localized optimization ensures that each area of the housing structure is designed for its specific function, improving durability
2Strength
If the housing structure is made more rigid to support the battery module, then the structural integrity is improved, but the weight of the housing increases
Solution Approach 1:
The housing ribs are designed with curved surfaces rather than straight lines, and the housing protrusions have rounded contours. These curved geometries provide better structural strength and load distribution while using less material compared to straight-edged rigid structures, thereby reducing weight while maintaining structural integrity
Solution Approach 2:
The housing structure appears to use composite construction with ribs and protrusions that may be made from different materials or material densities, optimizing the strength-to-weight ratio by placing material only where structurally necessary
3Strength
If the housing ribs are positioned closer together to enhance rigidity, then the structural strength is improved, but the manufacturing complexity increases
Solution Approach 1:
The housing ribs are arranged asymmetrically around the housing protrusions, with varying distances between adjacent ribs. This asymmetric arrangement optimizes rigidity in critical directions while leaving sufficient space for manufacturing processes, avoiding the need for uniformly dense rib structures that would be difficult to manufacture
Data Source
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AI summary
Provided is a battery pack including a housing and a battery module inside the housing, wherein the housing includes a housing protrusion in the housing and housing ribs extending in different directions from each other from the housing protrusion, and wherein the housing ribs formed in any one housing protrusion may be apart from each other along a circumferential direction of the housing protrusion.