Battery Tab-to-Post Snap-Fit Connection for Welding-Free Assembly
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Solution Overview
Problem
The complex welding process required to connect the tab and post assembly in batteries complicates the assembly efficiency due to limited space and the risk of short circuits from welding slag.
Innovation Solution
A battery design that uses a snap-fit connecting sheet assembly instead of welding, where the first and second connecting sheets are connected manually or with a simple tool, reducing assembly complexity and avoiding the risks associated with welding slag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding process is used to connect the two connecting sheets, then the connection strength is improved, but the assembly complexity and time increase
Solution Approach 1:
The patent replaces the welding process (thermal/mechanical system) with a snap-fit mechanical connection system. The first connecting sheet includes a snap-fit protrusion that engages with a snap-fit cavity in the second connecting sheet, eliminating the need for welding equipment and complex welding procedures while maintaining connection strength and significantly improving assembly efficiency.
2Strength
If welding process is used to connect the two connecting sheets, then the connection strength is improved, but the risk of harmful factors (welding slag causing short circuit) increases
Solution Approach 1:
The patent eliminates the welding process entirely by using a mechanical snap-fit connection. The snap-fit protrusion and cavity design creates a secure mechanical bond without generating welding slag, thereby completely removing the risk of short circuits caused by welding debris while maintaining adequate connection strength for battery assembly requirements.
3Strength
If welding process is used to connect the two connecting sheets, then the connection strength is improved, but the device complexity increases
Solution Approach 1:
The patent substitutes the complex welding process with a simple snap-fit mechanical connection. The first connecting sheet features a snap-fit protrusion that fits into a corresponding cavity in the second connecting sheet, enabling manual or automated assembly without welding equipment, technical expertise, or complex process control, thereby reducing device and process complexity while maintaining connection strength.
Data Source
AI summary
A battery includes a cell, a post assembly and a connecting sheet assembly. The cell includes a tab. The post assembly is connected to the tab. The tab and the post assembly are connected by the connecting sheet assembly. The connecting sheet assembly includes a first connecting sheet and a second connecting sheet. One of the first connecting sheet and the second connecting sheet is connected to the tab, and the other is connected to the post assembly. The first connecting sheet is snapped with the second connecting sheet. The battery of this application can solve the problems that the connecting sheet on the tab and the connecting sheet on the post assembly are connected by welding process, and the welding process is relatively complicated and affects the assembling efficiency of the battery.