Electrode Assembly Pressing Plate Structure for Stable Tab Welding
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Solution Overview
Problem
The lack of a stable pressing plate structure for electrode assemblies during welding leads to unstable welding quality of tabs, resulting in rosin joints due to displacement deviations and shaking of the tab and body during the welding process.
Innovation Solution
A pressing plate structure with a first crimping portion and a second crimping portion fixedly connected, where the second crimping portion protrudes downward to crimp onto the tab, and the first crimping portion abuts against the body to prevent shaking, ensuring no relative displacement and improving welding quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a pressing plate structure is not provided for electrode assemblies, then the structure is simple, but the welding quality of tabs becomes unstable
Solution Approach 1:
The pressing plate is divided into two functional parts: a first crimping portion that contacts the body and a second crimping portion that contacts the tab. This segmentation allows each part to perform its specific function independently, improving welding quality by stabilizing both the body and tab during the welding process.
Solution Approach 2:
The second crimping portion protrudes downward from the first crimping portion in the first direction, creating a height difference. This dimensional change enables the pressing plate to simultaneously stabilize the body (via the first crimping portion) and the tab (via the second crimping portion), thereby improving welding quality without excessive complexity.
2Reliability
If the first crimping portion and second crimping portion are not fixedly connected, then the structure is more flexible, but the tab may shake during welding causing rosin joints
Solution Approach 1:
The first crimping portion and second crimping portion are fixedly connected to form an integrated pressing plate structure. This merging ensures that both portions move together as a single unit, preventing relative displacement between them and eliminating tab shaking during welding, thereby improving welding reliability.
3Manufacturing precision
If the second crimping portion does not protrude downward from the first crimping portion, then the structure is simpler, but the tab cannot be effectively crimped and stabilized
Solution Approach 1:
The second crimping portion protrudes downward from the first crimping portion in the first direction, creating a vertical height difference. This dimensional change enables the pressing plate to simultaneously contact and stabilize both the body (via the first crimping portion) and the tab (via the second crimping portion), achieving precise tab positioning during welding.
Data Source
AI summary
A pressing plate structure includes a frame and a pressing block unit. The pressing block unit includes a first crimping portion and a second crimping portion fixedly connected to each other. The first crimping portion is movably disposed on the frame in a first direction to approach or leave an electrode assembly. The second crimping portion protrudes downward from the first crimping portion in the first direction. The second crimping portion is provided with a welding hole extending in the first direction. The second crimping portion is capable of being crimped onto a tab of the electrode assembly, and the welding hole exposes part of the tab.