Power Storage Stack Adhesive Layout for Thermal Uniformity
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Solution Overview
Problem
In power storage stacks, temperature variance occurs due to the positioning of conductive adhesives between power storage modules, leading to inefficient heat management.
Innovation Solution
A power storage stack configuration is introduced, where conductive members are positioned between adjacent power storage modules, and conductive adhesives with specific coating patterns and electrical conductivity gradients are used to fix these members, ensuring optimal heat dissipation and minimizing temperature variance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive adhesive is applied to fix conductive members between power storage modules, then the conductive members are positioned and fixed, but temperature variance occurs due to adhesive positioning issues
Solution Approach 1:
The conductive adhesive is divided into multiple coating portions (first coating portions and second coating portions) that are arranged in a segmented pattern rather than applied as a continuous layer. This segmentation allows precise control over where the adhesive contacts the conductive member, ensuring uniform positioning while minimizing areas where temperature variance can occur. The segmented coating portions are positioned at specific locations that do not overlap when viewed from the first direction, optimizing both fixation and thermal performance.
2Reliability
If conductive adhesive is used to fix power storage modules to current collector plates, then electrical connection is established, but temperature variance occurs due to adhesive placement
Solution Approach 1:
The conductive adhesive is applied with varying electrical conductivity at different locations. Specifically, in at least one of the first coating portions and second coating portions, the electrical conductivity of coating portions disposed on both end sides in the second direction is greater than that of coating portions disposed in the middle side. This local quality variation ensures that electrical connection is strongest where needed (at the ends) while the middle portions provide sufficient connection with less impact on temperature distribution, thereby reducing overall temperature variance in the power storage stack.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed configuration effectively suppresses temperature variance in power storage stacks, enhancing their thermal management capabilities, especially during high-load operations or rapid charging.
Implementation Method 1
The first face is fixed by a first conductive adhesive to the power storage module situated on one side in the first direction with respect to the conductive member. The second face is fixed by a second conductive adhesive to the power storage module situated on the other side in the first direction with respect to the conductive member.
Implementation Method 2
conductive adhesives with specific coating patterns and electrical conductivity gradients are used to fix these members, ensuring optimal heat dissipation and minimizing temperature variance
Data Source
AI summary
The power storage stack includes multiple power storage modules arranged in a first direction and a conductive member disposed between adjacent power storage modules, and the conductive member has a first face and a second face. The first face is fixed to the power storage module located on one side in the first direction by a first conductive adhesive, and the second face is fixed to the power storage module located on the other side in the first direction by a second conductive adhesive. The first conductive adhesive includes multiple first coating portions spaced side by side in a second direction, and the second conductive adhesive includes multiple second coating portions spaced side by side in a second direction. When viewed from the first direction, the multiple first coating portions and the multiple second coating portions are disposed so as not to overlap each other.