Flexible Battery Substrate Connection Structure for Electrode Shift
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing flexible substrates used in battery cells face challenges in maintaining stable connections due to positional changes of the battery electrodes caused by thermal expansion and manufacturing tolerances, leading to potential interference and damage during current extraction.
Innovation Solution
A flexible substrate with a connection portion designed to incline and extend in multiple directions, ensuring the fixing portion and substrate body are at different vertical heights, preventing interference and allowing stable current extraction even with electrode position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bent connection portion is used to accommodate positional changes of the battery electrode, then the connection stability is improved, but the connection portion may deform or interfere with the substrate body when positional changes occur in multiple directions simultaneously
Solution Approach 1:
The connection portion is designed to extend in multiple directions (first direction toward substrate body, second direction perpendicular to first direction) rather than following a simple bent path. This multi-directional extension allows the connection portion to accommodate positional changes of the battery electrode in any direction without deforming or interfering with the substrate body, as the orthogonal arrangement provides spatial separation and flexibility in both dimensions.
2Adaptability or versatility
If the connection portion extends horizontally to accommodate electrode movement, then adaptability to position changes is improved, but interference between connection portion and substrate body occurs
Solution Approach 1:
The connection portion is segmented into multiple extending portions with different orientations. The first extending portion extends in a first direction from the substrate body, while the second extending portion extends in a second direction perpendicular to the first direction. This segmentation allows each portion to independently accommodate movement in its respective direction, providing adaptability without creating interference between components.
Data Source
AI summary
A flexible substrate includes a plate-shaped substrate body arranged perpendicular to a vertical direction, and a connection portion elongating and extending. The connection portion includes an extraction portion, a bent portion, a first extending portion that extends from the bent portion to a positive side in a x direction, a folded portion, a second extending portion that extends in parallel and opposite to the first extending portion, and a fixing portion. The first extending portion is inclined downward to the positive side in the x direction. The second extending portion is inclined downward to the negative side in the x direction. The fixing portion can be made sufficiently lower than the substrate body even when inclination angles of the first extending portion and the second extending portion are made small.