Battery Cell End-Cap Assembly for Dust-Free Precision Fit
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Solution Overview
Problem
Current battery cell assembly devices have complex structures, high equipment costs, and poor cleanliness due to dust contamination, which affect the quality of assembled battery cells.
Innovation Solution
An assembly device with a supporting member and a pressing-down mechanism that ensures the end cap closes off the housing opening, preventing dust entry and simplifying the assembly process by using a recessed portion to avoid electrode terminals and limiting mechanisms to stabilize the end cap and housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the opening of the housing is upward during assembly, then the assembly process is conventional, but dust easily falls into the housing causing contamination
Solution Approach 1:
The patent inverts the conventional assembly orientation by positioning the housing opening downward instead of upward. This inversion prevents dust from falling into the housing during assembly, directly resolving the contamination issue while maintaining operational simplicity through the supporting member and pressing-down mechanism.
2Manufacturing precision
If a complex assembly device structure is used, then assembly precision can be improved, but equipment cost increases
Solution Approach 1:
The assembly device is segmented into two independent functional modules: a supporting member that holds the end cap and a pressing-down mechanism that applies force to the housing. This segmentation achieves precise assembly through coordinated action of simple components without requiring a complex integrated structure, thereby reducing equipment cost while maintaining assembly precision.
Solution Approach 2:
The patent extracts the essential assembly function into two core components (supporting member and pressing-down mechanism), removing unnecessary complex structures. The supporting member simply holds the end cap, and the pressing-down mechanism simply applies downward force, achieving precise assembly through functional simplicity rather than structural complexity.
3Reliability
If the supporting member directly contacts the end cap, then support is provided, but electrode terminals may interfere with supporting stability
Solution Approach 1:
The patent extracts the electrode terminal from the supporting interface by providing a through-hole in the supporting member. This allows the electrode terminal to pass through the supporting member without contacting the end cap, eliminating interference with supporting stability while maintaining the structural integrity and reliability of the support system.
Data Source
AI summary
An assembly device includes a supporting member configured to support an end cap of a battery cell and a pressing-down mechanism arranged above the supporting member. The pressing-down mechanism is configured to press down a housing of the battery cell to enable the housing to fit with the end cap, so that the end cap closes off an opening of the housing.