Immersion Battery Cell Holder With Shell Channels for Uniform Cooling
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Solution Overview
Problem
Existing battery cell thermal management systems face inefficiencies due to non-uniform cooling, limited thermal contact areas, and excessive weight, particularly with flexible foils and cuboid structures, leading to suboptimal performance and safety concerns.
Innovation Solution
A battery cell holder comprising a first and second shell with attachable holding elements and thermal management channels, designed to securely hold battery cells and facilitate uniform thermal management using a dielectric fluid, enhancing contact area and structural stability while reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flexible foil is used for thermal management, then the structure can be integrated with battery cells, but the thermal contact area is limited and placement is complex
Solution Approach 1:
The thermal management system is segmented into modular shell units with integrated holding elements, allowing each module to be independently manufactured and then assembled. This segmentation enables the thermal management structure to adapt to different battery cell arrangements while maintaining large thermal contact areas through the shell's extended surfaces.
2Stability of the object's composition
If cuboid hollow body structure is used, then battery cells can be regularly arranged, but the structure has large weight
Solution Approach 1:
The patent employs thin-walled shell structures with optimized wall thickness that maintain structural integrity while minimizing weight. The shell design incorporates ribs and reinforcing elements strategically placed to provide necessary mechanical strength without adding excessive weight, achieving a balance between structural stability and weight reduction.
3Strength
If holding elements are integrated into shells, then structural stability is improved, but manufacturing complexity increases
Solution Approach 1:
The holding elements are merged with the shell structure to form an integrated component. The shell itself is designed with built-in holding features such as recesses, protrusions, or integrated clamps that secure battery cells without requiring separate holding devices. This merging reduces the total number of parts and simplifies the manufacturing process while maintaining structural stability.
4Temperature
If thermal management channels are provided in shells, then thermal management efficiency is improved, but the structure becomes more complex
Solution Approach 1:
The shell structure serves multiple functions simultaneously: it provides mechanical support and containment, integrates holding elements for battery cell securing, and incorporates thermal management channels for heat dissipation. This multi-functionality reduces the need for separate components, simplifying the overall structure while improving thermal management efficiency.
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 solution provides a larger thermal contact area, flexible and efficient thermal management, increased structural stability, and faster charging/discharging capabilities with reduced weight, ensuring safer battery operation.
Implementation Method 1
a thermal management fluid can be applied to the inner space for thermal management, preferably cooling the battery cells
Data Source
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AI summary
This invention relates to a battery cell holder for thermal management, in particular for immersion thermal management, of a plurality of battery cells, comprising a first shell, a second shell, wherein the first shell and the second shell are attachable to each other forming a sealed inner space for arranging a plurality of battery cells within said inner space and wherein a thermal management fluid can be applied to the inner space for thermal management, preferably cooling the battery cells, wherein a) at least one holding element separated from the first and second shell being adapted to fix a position of at least two of said plurality of battery cells and/or wherein b) the first shell and/or the second shell are provided with fixing elements adapted to provide a fixing function for said plurality of battery cells, wherein the first shell and/or the second shell comprise at least one thermal management channel for thermal management of at least a part of the battery cells fixed by the first shell and/or the second shell.