Polygonal Battery Housing With Cylindrical Cavity for Dense Pack Assembly
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Solution Overview
Problem
Cylindrical batteries face challenges in secure fixation due to their outer contours, leading to space waste and gaps when combined, resulting in inefficient space utilization and structural insecurity.
Innovation Solution
A battery design featuring a housing in the shape of a regular polygonal prism with a circular opening and a cover, allowing for secure alignment and assembly without additional fixing brackets, and a cylindrical accommodating cavity that uniformly stresses the battery cell, enhancing structural safety and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixing bracket is used to secure cylindrical batteries, then fixation reliability is improved, but space utilization deteriorates due to occupied accommodating space
Solution Approach 1:
The patent merges the battery housing with the fixing structure by designing the housing itself to have a polygonal cross-section that provides inherent mechanical interlocking with adjacent batteries. This eliminates the need for separate fixing brackets, achieving both secure fixation and maximum space utilization by combining the housing and fixing functions into a single integrated structure.
Solution Approach 2:
The patent employs a cylindrical accommodating cavity within the polygonal housing to provide curved surfaces that uniformly stress the cylindrical battery cells. The cylindrical shape of the cavity ensures even distribution of mechanical stress while the outer polygonal shape provides the fixing function, resolving the contradiction between fixation reliability and space utilization.
2Stability of the object's composition
If fixing brackets are used to prevent slipping, then structural stability is improved, but device complexity increases due to additional components
Solution Approach 1:
The patent combines the housing structure with the fixing mechanism by designing the housing with a polygonal cross-section that inherently provides mechanical interlocking with adjacent batteries. This integration eliminates separate fixing brackets and reduces device complexity while maintaining structural stability through the geometric interlocking design.
Solution Approach 2:
The patent uses an asymmetric polygonal cross-section for the housing that creates complementary shapes between adjacent batteries, enabling stable interlocking without additional components. The asymmetric geometry provides natural positioning and prevention of slipping, achieving structural stability while minimizing device complexity.
3Adaptability or versatility
If cylindrical accommodating cavity is used, then compatibility with battery cells is improved, but stress distribution worsens during expansion
Solution Approach 1:
The patent employs a cylindrical accommodating cavity within the polygonal housing to provide curved surfaces that uniformly stress the cylindrical battery cells. The cylindrical shape of the cavity ensures even distribution of mechanical stress while the outer polygonal shape provides the fixing function, resolving the contradiction between fixation reliability and space utilization.
Data Source
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AI summary
The present disclosure relates to the technical field, and discloses a battery comprising a housing, a cover, and a battery cell, wherein the housing defines an accommodating cavity, and one end of the housing is provided with an opening communicated with the accommodating cavity; the opening is circular in shape, and the housing is in a shape of a regular polygonal prism; the cover covers the opening and is connected to the housing; the battery cell is provided in the accommodating cavity and the accommodating cavity is a cylindrical cavity. Based on the above structure, since the housing is in the shape of a regular polygonal prism, it is beneficial for alignment and assembly, and there is no need for additional fixing brackets. Further, when adjacent batteries are combined, there is no gap therebetween, thereby achieving high space utilization and more secure fixation. More importantly, compared with square or regular polygonal prism-shaped cavities, the cylindrical accommodating cavity of the battery can be uniformly stressed, especially when the bare battery cell within the accommodating cavity expands. Thus, an enhanced compatibility is achieved between the cylindrical accommodating cavity and the cylindrical battery cell, thereby improving structural safety and reliability and enhancing the structural strength of the battery cell.