Battery Module Barrier With Spacing Elements For Heat Dissipation
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Solution Overview
Problem
High-power battery modules with non-aqueous electrolytes face heat accumulation issues due to electrochemical reactions, leading to degradation and safety concerns, particularly in high-capacity configurations.
Innovation Solution
A barrier system with a separation plate, side plates, and a base plate that includes protruding spacing elements and grooves to create a tray for battery cells, allowing for improved heat exchange by positioning cells at a distance from the base plate and enhancing cooling medium flow, thereby preventing heat accumulation and facilitating efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery cells are arranged closely together in a battery module to increase capacity, then the energy density and power output are improved, but heat accumulation occurs leading to degradation and safety issues
Solution Approach 1:
The barrier is segmented into multiple functional components: separation plate for cell isolation, side plates for lateral support, base plate for positioning, and integrated cooling channels. This segmentation allows each component to address specific aspects of heat management while maintaining overall module density.
Solution Approach 2:
The barrier acts as an intermediary structure between adjacent battery cells, providing both mechanical separation and thermal management. The cooling medium flows through channels in the barrier, serving as a heat transfer intermediary that extracts heat from cells without requiring direct contact between cells and cooling systems.
2Temperature
If spacing elements protrude from the base plate to position battery cells at a distance for heat dissipation, then heat exchange efficiency is improved, but the device complexity increases
Solution Approach 1:
The spacing elements are merged with the base plate as an integrated structure rather than separate components. The cooling channels are also integrated into the base plate and side plates, combining structural support and thermal management functions into unified elements, thereby reducing overall device complexity.
Solution Approach 2:
The barrier structure serves multiple functions simultaneously: mechanical support for battery cells, thermal management through integrated cooling channels, and positioning through protruding spacing elements. This multi-functionality reduces the need for separate components, simplifying the overall device structure.
3Temperature
If cooling channels are integrated into the barrier structure to improve heat transfer, then heat dissipation is enhanced, but manufacturing complexity increases
Solution Approach 1:
The cooling channels are designed with optimized parameters including cross-sectional area, curvature radius, and spacing to maximize heat transfer efficiency. The channel dimensions are specifically tuned to balance thermal performance with manufacturability, ensuring feasible production while achieving effective heat dissipation.
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 barrier system effectively prevents heat accumulation at battery cells, allowing for efficient heat release to a cooling medium, thereby improving the safety and longevity of high-power battery modules by maintaining optimal temperature levels.
Implementation Method 1
the heat can be released from the battery cell to a cooling medium, e.g. air, that is present in the space between the battery cell and the base plate
Data Source
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Figure 3A
AI summary
The invention relates to a barrier (150) for a battery module (100) and to a battery module (100) including a plurality of battery cells (10), barriers (150) and a housing (110), the barriers (150) being respectively interposed between the battery cells (10). In order to improve cooling of the battery cell (10), the barrier (150) comprises spacing elements (155) configured to form interconnected flow paths (U2, U3, U4) for a heat exchange medium between one of the battery cells (10) and the barrier (150).