Battery Cell Guide Structure for Swelling-Induced Pressure Control
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Solution Overview
Problem
When multiple battery cells are placed in a case, if one battery cell expands, it can cause the other cells to bend and deteriorate due to the swelling phenomenon, which is not effectively addressed by existing technologies.
Innovation Solution
A battery device design that includes a cell assembly with a busbar assembly and a cell guide extending from the busbar assembly to face both side surfaces of the cell assembly, along with buffer pads and a reinforcing frame to minimize surface pressure deviation and prevent cell deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple battery cells are placed in one case, then space utilization is improved, but if one battery cell expands it causes other battery cells to bend and deteriorate
Solution Approach 1:
The patent introduces a cell guide structure that divides the internal space of the battery case into separate compartments for each battery cell. This segmentation prevents the expansion of one cell from affecting adjacent cells, thereby maintaining reliability while preserving space utilization through efficient compartmentalized layout.
Solution Approach 2:
The cell guide acts as an intermediary structure between battery cells, providing mechanical separation and support. This intermediary element absorbs expansion forces and prevents direct contact between expanding cells and their neighbors, resolving the contradiction between compact arrangement and cell protection.
2Reliability
If a cell guide is added to prevent battery cell deterioration, then battery cell stability is improved, but device complexity increases
Solution Approach 1:
The cell guide is integrated with the existing battery case structure, merging the protective function into the housing itself rather than adding completely separate components. This integration reduces overall device complexity while maintaining the stability improvement.
Solution Approach 2:
The cell guide serves multiple functions simultaneously: it provides mechanical separation between cells, supports cell alignment, prevents expansion damage, and maintains structural integrity. This multi-functionality justifies the added complexity by delivering multiple benefits from a single structural element.
Data Source
AI summary
A battery device according to the disclosed technology may include a cell assembly in which a plurality of battery cells are stacked, a busbar assembly coupled to one side of the cell assembly, and a cell guide extending from the busbar assembly toward the cell assembly and partially facing both side surfaces of the cell assembly.