Battery Pack Cell Frames with Coupling Grooves
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Solution Overview
Problem
Existing battery packs lack effective protection and spacing mechanisms for battery cells, which can lead to cell separation, swelling issues, and manufacturing complexities, particularly in securing external shocks and heat dissipation.
Innovation Solution
The use of individual cell frames that accommodate battery cells, featuring coupling grooves and protrusions for secure assembly, fixing parts for separation, and air holes for heat management, allowing for series or parallel connections and simplifying manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If battery cells are placed directly in the battery pack without individual cell frames, then the device complexity is reduced, but the structural stability and protection against external shocks deteriorates
Solution Approach 1:
The battery pack structure is segmented into multiple independent cell frames, each accommodating an individual battery cell. Each cell frame includes fixing parts that extend to secure the battery cell in place. This segmentation provides individual protection and positioning for each cell while maintaining overall pack stability without requiring a complex integrated structure.
2Volume of stationary object
If battery cells are tightly packed without spacing mechanisms, then the volume efficiency is improved, but the heat dissipation capability and protection against cell swelling deteriorates
Solution Approach 1:
The cell frames provide localized spacing and protection at critical areas where battery cells are positioned. The fixing parts extend specifically to create necessary gaps between adjacent cells, allowing heat dissipation and accommodation of swelling in those specific locations while maintaining tight overall packing efficiency in the battery pack.
3Stability of the object's composition
If battery cells are secured with extensive fixing mechanisms, then the structural stability is improved, but the manufacturing precision requirements and device complexity increase
Solution Approach 1:
The cell frames are designed with fixing parts that automatically secure battery cells through simple insertion and engagement. The fixing parts extend to contact and hold the battery cells in position without requiring complex adjustment or high-precision assembly procedures. This self-securing mechanism achieves stable cell positioning while minimizing manufacturing precision requirements.
4Strength
If cell frames cover all surfaces of battery cells, then the protection against external shocks is improved, but the heat dissipation capability and accessibility of long side surfaces deteriorates
Solution Approach 1:
The cell frames provide protective coverage at specific locations where structural support and shock absorption are most needed, such as the edges and corners of battery cells. The fixing parts extend selectively to cover portions of the battery cell surfaces, particularly areas requiring mechanical protection, while leaving other areas exposed for heat dissipation and thermal management.
Data Source
AI summary
A battery pack includes a plurality of battery cells, each battery cell of the plurality of battery cells including a top surface from which a pair of electrode tabs are drawn, a bottom surface facing the top surface, and a pair of long side surfaces having relatively large areas and a pair of short side surfaces having relatively small areas, among surfaces connecting the top surface and the bottom surface, and a plurality of cell frames, each cell frame of the plurality of cell frames individually accommodating a respective one of the battery cells and exposing portions of the long side surfaces of the respective one of the battery cells. The cell frames are coupled to each other in a line. Edges of the cell frames include fixing parts extending parallel with the long side surfaces of the battery cells and covering portions of the long side surfaces.