Battery Module Cooling Structure for Cell Temperature Deviation
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Solution Overview
Problem
Battery modules generate excessive heat, leading to potential deterioration, ignition, and explosion due to inadequate heat dissipation, and exhibit significant temperature deviations among cells.
Innovation Solution
A battery module design featuring a heat dissipation structure with a cover plate and heat transfer materials arranged in specific grooves and rows to enhance heat dissipation, accompanied by insulating members and heat dissipation pads to manage temperature deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery capacity and output are increased, 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 functional regions: a first heat transfer material in a central groove and second heat transfer materials in lateral grooves. This segmentation allows different parts of the battery cell to be cooled according to their specific heat generation characteristics, effectively managing the heat generated by high-capacity batteries.
Solution Approach 2:
The patent applies different heat transfer materials and groove configurations to different locations on the battery cell. The central region uses a first heat transfer material while lateral regions use second heat transfer materials, creating localized heat dissipation zones that match the spatial distribution of heat generation in high-power batteries.
2Stability of the object's composition
If uniform heat dissipation is implemented across the battery module, then temperature deviation is reduced, but heat dissipation performance at critical locations may be insufficient
Solution Approach 1:
The heat dissipation member features a central groove with first heat transfer material and lateral grooves with second heat transfer materials, creating non-uniform heat dissipation that matches the localized heat generation patterns. This ensures both overall temperature uniformity and sufficient heat dissipation at critical high-heat zones.
Solution Approach 2:
By dividing the heat dissipation structure into central and lateral segments with different materials and configurations, the system achieves both uniform temperature distribution across the battery cell and enhanced heat dissipation performance at specific critical locations simultaneously.
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 dissipates heat and reduces temperature deviations across the battery module, improving safety and performance by preventing short circuits and enhancing thermal management.
Implementation Method 1
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
Data Source
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 a first heat transfer material provided to be connected to a center of one surface of the cover plate in a longitudinal direction of the battery cell and a second heat transfer material provided on both portions of the first heat transfer material and having a structure aligned in a plurality of rows in the longitudinal direction of the battery cell, and the second heat transfer materials are aligned so that an interval therebetween is gradually narrowed from a center toward both ends of the battery cell to gradually improve heat dissipation performance from the center toward both the ends of the battery cell.