Rechargeable Battery Can With Bent Bottom Plate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rechargeable batteries face issues with electrolyte solution leakage from the can connector and reduced productivity due to elongated welded connections between the can body and bottom plate, which increases the risk of leakage and decreases manufacturing efficiency.
Innovation Solution
A rechargeable battery design featuring a can with a polygonal tube body and a bottom plate that is bent and welded to reduce the length of the connection portion, preventing electrolyte leakage and improving productivity by minimizing the welded area, thus enhancing the structural integrity and manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bottom plate is fully welded to all surfaces of the can body, then the structural integrity and sealing performance are improved, but the manufacturing time and productivity are reduced due to the elongated welded connection
Solution Approach 1:
The patent extracts the bottom plate from complete contact with all can body surfaces, leaving a gap between them. Only specific connection portions are welded together, rather than the entire bottom plate being fully attached to all surfaces. This selective attachment reduces welding time while maintaining sufficient sealing performance through the connected portions.
2Reliability
If the connection portion between can body and bottom plate is elongated to ensure sealing, then the reliability is improved, but the manufacturing complexity and time are increased
Solution Approach 1:
The patent segments the connection between the can body and bottom plate into discrete connection portions rather than a continuous elongated welded structure. The bottom plate is connected to specific surfaces of the can body at separate locations, with gaps between connection points. This segmentation simplifies the welding structure while maintaining sealing effectiveness through distributed connection points.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively prevents electrolyte leakage and improves the productivity of the can by shortening the connection length, reducing the risk of electrolyte leakage and enhancing the stability of the battery structure.
Implementation Method 1
a bottom plate bent from at least one surface of the body among multiple surfaces of the body towards an opening of the body
Implementation Method 2
a can receiving the electrode assembly, and the can including a body formed by a polygonal tube and a bottom plate bent from at least one surface of the body among multiple surfaces of the body towards an opening of the body
Data Source
AI summary
A rechargeable battery prevents an electrolyte solution from being leaked from a can connector and improves the productivity of a can. A rechargeable battery constructed as an embodiment of the present invention includes an electrode assembly formed by stacking and winding a positive electrode, a separator, and a negative electrode; a can receiving the electrode assembly, and the can including a body formed by a polygonal tube and a bottom plate bent from at least one surface among multiple surfaces at an opening of the body and physically connected to the rest of the multiple surfaces of the body; and a cap assembly sealing another opening of the body and the cap assembly being disposed opposite to the bottom plate.