Battery Top Cover Pole Geometry for Higher Torsion Resistance
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Solution Overview
Problem
The cylindrical structure of conductive poles in battery top cover assemblies leads to poor torsion resistance, affecting the overall mechanical properties of the assembly.
Innovation Solution
A top cover assembly design with a cover plate and pole configuration where the pole passes through a through hole, forming a profile with a ratio of maximum length to width between 2 and 3, enhancing torsion and tensile resistance characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a cylindrical structure is adopted for the pole, then the production and installation process is simplified, but the torsion resistance characteristic deteriorates
Solution Approach 1:
The patent changes the pole's cross-sectional shape from a symmetric cylindrical structure to an asymmetric structure where the orthographic projection forms a profile with length L1 and width L2 satisfying 2 ≤ L1/L2 ≤ 3. This asymmetric design significantly improves torsion resistance while remaining manufacturable through standard molding processes.
Data Source
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AI summary
The present disclosure provides a top cover assembly (100) and a battery (10). The top cover assembly (100) includes a cover plate (110) and a pole (120). The cover plate (110) includes a first surface (111) and a second surface (112). Afirst through hole (113) is provided on the cover plate (110) and penetrates from the first surface (111) to the second surface (112). The pole (120) passes through the first through hole (113). The pole (120) includes a first connecting part (121) inserted in the first through hole (113). An orthographic projection of the first connecting part (121) in a direction from the second surface (112) toward the first surface (111) forms a first profile. The first profile has a first maximum length L 1 in the first direction (X) and a first maximum width L2 in a second direction (Y), where 2 ≤ L1/L2 ≤ 3.