Battery Module Heat Transfer Layout for Uniform Cell Temperature
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Solution Overview
Problem
Existing battery modules face issues with heat dissipation, leading to increased temperature deviations and potential deterioration or explosion due to inefficient heat release.
Innovation Solution
A battery module design featuring a heat dissipation structure with a cover plate and heat transfer materials arranged in specific patterns to enhance heat dissipation, including first and second heat transfer materials with varying intervals and arrangements to manage heat distribution uniformly across the battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery capacity and output are increased to improve performance, then power and energy storage are improved, but heat generation increases and heat dissipation becomes insufficient
Solution Approach 1:
The heat dissipation member is divided into multiple heat transfer materials arranged in parallel rows, creating segmented heat dissipation pathways. This segmentation allows heat from different regions of the battery cell to be conducted away through multiple independent channels, improving overall heat dissipation efficiency without increasing the total volume of the heat dissipation structure.
Solution Approach 2:
The intervals between adjacent heat transfer materials are configured to be different in different regions. Specifically, the intervals are smaller in regions where battery cells generate more heat, providing enhanced local heat dissipation capability where it is most needed, while maintaining larger intervals in regions with lower heat generation.
2Stability of the object's composition
If uniform heat dissipation is achieved across all battery cells, then temperature deviation is reduced, but the complexity of the heat dissipation structure increases
Solution Approach 1:
The heat dissipation structure employs asymmetric interval configuration between heat transfer materials, with different spacing in different regions. This asymmetric design allows the structure to adapt to the non-uniform heat generation pattern of battery cells, achieving more uniform temperature distribution across the battery module without requiring complex active control systems.
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 design effectively reduces temperature deviations by improving heat dissipation performance, preventing performance deterioration and ensuring safe operation of the battery module.
Implementation Method 1
a first heat transfer material having a structure, which is arranged in a plurality of rows on one surface of the cover plate
Data Source
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AI summary
The present invention relates to a battery module comprising: a plurality of battery cells disposed to overlap each other in a thickness direction thereof; a battery case configured to accommodate the battery cells and having a structure of which a lower portion is opened; and a heat dissipation member comprising a cover plate coupled to the lower portion of the battery case to support the battery cell and a heat dissipation body provided on one surface of the cover plate, on which the battery cell is supported, to dissipate heat generated in the battery cell, wherein the heat dissipation body comprises first heat transfer materials, which are aligned in plurality of rows in a longitudinal direction of the battery cell on one surface of the cover plate, and the first heat transfer materials are aligned so that an interval therebetween is gradually narrowed from a center to both ends of the battery cell to gradually improve heat dissipation performance from the center to both the ends of the battery cell.