Current Collector Rib Structure for Accurate Battery Cell Bending
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Solution Overview
Problem
The existing current collecting assemblies in battery cells face challenges with high safety hazards due to difficulty in determining the bending position, leading to skewed connections and potential interference during assembly, which can cause safety issues.
Innovation Solution
A current collecting assembly with reinforcing ribs and connection members that allow precise positioning and bending, enhancing structural strength and preventing interference, thereby improving assembly yield and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the current collecting assembly uses a simple structure without reinforcing ribs, then the manufacturing process is easier and device complexity is lower, but the bending position cannot be determined accurately and the connection stability deteriorates
Solution Approach 1:
The conducting portion is segmented by adding reinforcing ribs that divide the structure into distinct regions. These ribs create visible markers and structural divisions that help determine the bending position accurately during assembly, resolving the contradiction between manufacturing precision and device complexity by introducing minimal structural elements that provide significant positioning guidance.
Solution Approach 2:
The reinforcing ribs are pre-positioned on the conducting portion at specific locations before assembly. This preliminary arrangement of structural features provides predetermined bending position markers, allowing the assembly process to proceed with accurate positioning without requiring complex real-time measurement or adjustment mechanisms.
2Reliability
If the current collecting assembly lacks reinforcing ribs, then the structure is simpler and easier to manufacture, but the connection stability and safety are compromised due to skewed connections
Solution Approach 1:
The reinforcing ribs segment the conducting portion structure, creating distinct zones that guide proper alignment and connection. This segmentation ensures that connection portions align correctly with corresponding components, preventing skewed connections and improving reliability without requiring complex alignment mechanisms.
Solution Approach 2:
The reinforcing ribs are strategically placed at specific locations on the conducting portion where structural support and positioning are most needed. This local enhancement of structural quality provides connection stability at critical points while maintaining overall structural simplicity, resolving the contradiction between reliability and device complexity.
3Reliability
If the connection portions are rigidly fixed without rotation capability, then the assembly process is simpler, but the connection stability and adaptability are reduced
Solution Approach 1:
The connection portions are designed with rotation capability, transforming them from rigid fixed structures to dynamic components that can adjust during assembly. This dynamic feature allows the connection portions to rotate into proper alignment with corresponding components, improving both assembly ease and connection stability by adapting to slight misalignments while maintaining secure final connections.
4Manufacturing precision
If the current collecting assembly uses a complex structure with multiple reinforcing ribs, then the bending position can be determined accurately and connection stability improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Rather than uniformly complexifying the entire structure, reinforcing ribs are added only at specific critical locations on the conducting portion where positioning and structural support are most needed. This localized approach provides accurate bending position determination and connection stability while minimizing the overall increase in device complexity and manufacturing difficulty.
Solution Approach 2:
The design incorporates a moderate number of reinforcing ribs - enough to provide accurate positioning and structural support at critical points, but not so many as to excessively complicate the structure. This partial action approach achieves the necessary manufacturing precision and connection stability without overwhelming manufacturing complexity.
Data Source
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AI summary
A current collecting assembly, an energy storage apparatus, and an electric device. The current collecting assembly comprises a first connecting member and a second connecting member; the first connecting member comprises a first connecting portion, a second connecting portion, and a conducting portion; the conducting portion is provided with at least one first reinforcing rib and at least one second reinforcing rib, the first reinforcing rib protrudes out of a first surface of the conducting portion, and the second reinforcing rib protrudes out of a second surface of the conducting portion; the second connecting portion is mechanically connected to the surface of the second connecting member, and after the second connecting portion rotates, the second connecting member is located on the side of the second connecting portion facing away from the conducting portion.