Immersion-Cooled Battery Cell Assembly With Integrated Flow Path
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Solution Overview
Problem
Existing secondary batteries, particularly lithium secondary batteries, face issues with heat generation during charging and discharging, which can degrade performance and pose safety risks such as fire or explosion, and there is a need for improved cooling efficiency and stability to mitigate these risks.
Innovation Solution
A battery assembly design featuring a receiving housing with a cooling portion and immersion material that includes a plate-shaped first pad between battery cells, a flow path for the immersion material, and a supporting portion to enhance cooling efficiency and stability by minimizing position change of battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling system is added to manage heat generation, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The supporting portion integrates both structural support function and cooling flow path function into a single component. The flow path is formed within the supporting portion itself, eliminating the need for separate cooling channels or additional cooling structures, thus improving cooling efficiency while avoiding increased device complexity
Solution Approach 2:
The supporting portion serves multiple functions simultaneously: it provides mechanical support for battery cells, defines the flow path for immersion material, and facilitates heat dissipation. This multi-functionality resolves the contradiction by achieving effective cooling without adding dedicated cooling components that would increase device complexity
2Stability of the object's composition
If battery cells are tightly fixed to improve stability, then position change is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The fixing portion uses a pad-like structure that can deform elastically to accommodate minor dimensional variations in battery cells. This flexible fixing mechanism achieves stable positioning without requiring high manufacturing precision, as the pad can adapt to small deviations in cell dimensions through elastic deformation
Solution Approach 2:
The fixing portion utilizes material property changes (elasticity) to accommodate dimensional variations. By changing from a rigid fixing mechanism to one based on elastic deformation, the system achieves stable positioning while being tolerant of manufacturing tolerances, thus resolving the contradiction between stability and manufacturing precision requirements
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 improves cooling efficiency and stability by effectively managing heat generation, reducing the risk of degradation and safety hazards, and is applicable in green technologies like electric vehicles and battery charging stations.
Implementation Method 1
an immersion material in contact with the plurality of battery cells in the cell receiving space and passing through the flow path
Data Source
AI summary
A battery assembly includes a plurality of battery cells stacked in a preset stacking direction, a receiving housing receiving the plurality of battery cells, a cell receiving space receiving the plurality of battery cells in the receiving housing, a supporting portion forming a flow path separated from the cell receiving space at a lower portion of the cell receiving space, a fixing portion arranged on one surface of opposite surfaces of the supporting portion which faces the cell receiving space and fixing the plurality of battery cells to the supporting portion, a cooling portion including a plate-shaped first pad positioned between the plurality of battery cells in the stacking direction, and an immersion material in contact with the plurality of battery cells in the cell receiving space and passing through the flow path.