Battery Enclosure Structure Without Flanges for Higher Cell Density
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Solution Overview
Problem
Existing battery designs are limited by low space utilization due to protruding flange structures, which affect the energy density of batteries.
Innovation Solution
A battery design that connects the first box and second box without protruding flange structures, utilizing a direct connection between the first side wall and the second box's side surface, enhancing space utilization and reducing volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If protruding flange structures are used to connect the first box and second box, then the connection strength is improved, but the space utilization rate deteriorates
Solution Approach 1:
The patent removes the protruding flange structures from the battery design. Instead of having flanges extend outward from the boxes to provide connection, the design integrates the connection function directly into the box walls themselves, eliminating the need for protruding elements and thereby reducing overall battery volume while maintaining connection capability.
Solution Approach 2:
The patent combines the connection function with the box structure itself. The first side wall of the first box and the first side surface of the second box are designed to directly abut and connect without separate flange components, merging the structural enclosure function with the connection function into a single integrated design.
2Stability of the object's composition
If protruding flange structures are used to connect the first box and second box, then the connection stability is improved, but the volumetric energy density deteriorates
Solution Approach 1:
The patent extracts and eliminates the protruding flange structures that were previously used to provide connection stability. By removing these external protrusions, the overall battery volume decreases, which directly increases the volumetric energy density while the connection stability is maintained through alternative design features.
Solution Approach 2:
The patent transitions from a design where connection elements extend in one dimension (protruding flanges) to a design where connection is achieved through direct surface-to-surface contact in the same plane. This dimensional reorganization eliminates wasted space while preserving connection integrity.
3Quantity of substance
If the first side wall is directly connected to the first side surface, then the volumetric energy density is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent segments the battery into distinct modular units (first box and second box) with clearly defined connection interfaces. The first side wall and first side surface are designed as separate, identifiable components with standardized connection features, making the complex direct-connection structure manageable through modular segmentation.
Solution Approach 2:
The patent creates universal connection features between the first side wall and first side surface that can serve multiple functions: structural connection, sealing interface, and alignment reference. This multi-functionality reduces the need for additional specialized components, thereby managing manufacturing complexity despite the advanced connection design.
Data Source
AI summary
A battery and an electrical device. The battery includes: a battery cell; a first box, where the first box includes a first end wall and a first side wall; and a second box, where the second box and the first box are connected to each other to jointly enclose and form a closed space for accommodating the battery cell, the second box includes a second end wall, the second end wall is disposed opposite to the first end wall along a first direction, the second box has a first side surface in a second direction, and the first direction intersects with the second direction. One end of the first side wall is connected to the first end wall, and the other end of the first side wall is connected to the first side surface.