Round Battery Cell Sealing With a Welded Contacting Plate
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Solution Overview
Problem
The existing crimping method for sealing round battery cells requires additional installation space and housing material, which negatively impacts the volumetric energy density of the cells.
Innovation Solution
A method involving a contacting plate that is welded to both the anode element of the rolling element and the housing, allowing for the insertion of the rolling element into the housing with the contact element establishing electrical contact, and subsequently welding the contacting plate and cover to the housing to seal the cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If crimping method is used to seal the round battery cell, then the housing parts can be joined together, but additional installation space and housing material are required which reduces volumetric energy density
Solution Approach 1:
The contacting plate serves dual functions: it acts as both the electrical contact element and the sealing element that joins the housing parts together. By merging the functions of separate contact elements and cover plate into a single integrated component, the patent eliminates the need for additional installation space and housing material that would be required for separate crimping elements, thereby maintaining sealing capability while improving volumetric energy density
Solution Approach 2:
The contacting plate is designed as a multi-functional component that simultaneously provides electrical contact functionality and structural sealing functionality. This universal component replaces the need for separate contact elements and cover plates, reducing the overall space requirement and material usage while maintaining both electrical and sealing functions
2Reliability
If separate contact elements are used in addition to cover plate, then electrical contact can be made, but the overall volume increases which negatively affects volumetric energy density
Solution Approach 1:
The patent merges the electrical contact function and the cover plate sealing function into a single contacting plate component. This integration eliminates the need for separate contact elements, thereby maintaining reliable electrical contact while reducing the overall volume of the battery cell assembly
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
This method allows for a more compact design of the round battery cell, thereby increasing the volumetric energy density and reducing the need for additional installation space and housing material.
Implementation Method 1
the contacting plate is welded to both the anode element of the rolling element and the housing
Implementation Method 2
the contacting plate is melted or welded to the anode element of the rolling element via at least one welding point
Data Source
AI summary
A method for pretreating a surface of a workpiece includes radiating an energy beam onto the surface to pretreat the surface; capturing electromagnetic radiation of the energy beam by a capture device, the capture device providing at least one electrical signal characterizing the captured electromagnetic radiation; and monitoring the at least one electrical signal.