Battery Cell Pack End Plate Positioning for Precise Assembly
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Solution Overview
Problem
The assembly of battery cell packs is inefficient due to inaccurate positioning of end plates and cells, leading to misalignment and reduced assembly precision.
Innovation Solution
Incorporating a limiting protrusion on the end plate that matches with a recess on the cell, allowing for precise and quick positioning, facilitating accurate stacking and improved assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If end plates are bonded to cells using conventional bonding methods, then the battery cell pack can be assembled, but the positioning accuracy between end plates and cells deteriorates, leading to assembly inefficiency
Solution Approach 1:
The end plate is segmented into multiple functional regions: a bonding region for adhesive bonding and multiple limiting protrusions for positioning. The cells are also segmented with corresponding recesses that receive the limiting protrusions. This segmentation allows the bonding process and positioning function to be separated, enabling accurate positioning without relying solely on bonding precision.
Solution Approach 2:
Limiting protrusions act as intermediary elements between the end plate and cells. These protrusions fit into corresponding recesses on the cells, serving as mechanical guides that ensure accurate positioning during assembly. This intermediary mechanism resolves the contradiction by providing a dedicated positioning feature that works independently from the bonding process.
2Reliability
If conventional bonding methods are used to attach end plates to cells, then the battery cell pack structure can be formed, but assembly time increases due to positioning adjustments
Solution Approach 1:
The limiting protrusions and recesses are pre-formed on the end plates and cells respectively, before the bonding process. This preliminary positioning feature ensures that when the components are brought together for assembly, the positioning is automatically achieved without requiring time-consuming adjustments or alignments during the bonding operation.
Solution Approach 2:
The limiting protrusions automatically guide the end plate to the correct position on the cells during assembly. This self-positioning mechanism eliminates the need for external positioning tools or manual alignment adjustments, allowing the assembly process to proceed quickly and reliably without sacrificing structural integrity.
Data Source
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AI summary
A battery cell pack and an assembly method of the battery cell pack are provided. The battery cell pack includes an end plate (10) and at least one cell (20). The end plate (10) is provided with a limiting protrusion (14). The cell (20) is provided with a recess (22). At least part of the limiting protrusion (14) is located in the recess (22) to position the end plate (10) and the cell (20).