Battery Module Separating Device With Fluid Chamber
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Solution Overview
Problem
Existing battery module separating devices are either too complex, stiff, or ineffective in dissipating heat and handling expansion forces, leading to potential propagation and fire damage between battery cells.
Innovation Solution
A separating device comprising two congruent and connected plate-like elements forming a chamber filled with a flame-retarding and insulating fluid, which can absorb external forces and prevent cell propagation by adjusting stiffness and facilitating heat dissipation through embossments and a potential burst opening for fluid release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stiff separating plates are used between battery cells, then structural strength is improved, but the ability to handle expansion forces deteriorates
Solution Approach 1:
The separating plate is divided into a first separating element and a second separating element arranged congruently and adjacent to each other, connected at their edges. This segmentation allows each element to flex independently while maintaining overall structural integrity, enabling the plate to handle expansion forces better while retaining strength.
Solution Approach 2:
The separating plate transitions from a completely rigid structure to a dynamic structure where the two separating elements can move relative to each other and to the battery cells. This dynamic capability allows the plate to adapt to cell expansion during charging and discharging while maintaining separation functionality.
2Stability of the object's composition
If thick separating plates are used, then mechanical stability is improved, but heat dissipation capability deteriorates
Solution Approach 1:
By dividing the separating plate into two thinner elements instead of one thick plate, the invention maintains mechanical stability through the dual-element structure while reducing thermal insulation barriers, thereby improving heat dissipation capability between battery cells.
Solution Approach 2:
The separating plate uses a composite structure of two separate elements that can be made from materials optimized for different functions - one layer for mechanical stability and another for thermal conductivity, achieving both stability and heat dissipation simultaneously.
3Temperature
If complex contoured structures are integrated into separating plates, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
Instead of integrating complex contoured structures into a single separating plate, the invention uses two simple, flat separating elements. The heat dissipation function is achieved through the dual-element configuration itself rather than through complex surface geometries, thereby reducing manufacturing complexity.
Solution Approach 2:
Rather than adding complexity to the separating plate structure to achieve heat dissipation, the invention inverts the approach by using the simple dual-element configuration itself as the heat dissipation mechanism, eliminating the need for complex contoured surfaces.
4Temperature
If cooling channels are integrated within separating plates, then heat dissipation is improved, but reliability deteriorates due to potential coolant leakage
Solution Approach 1:
The invention extracts the cooling function from the separating plate structure itself and implements it through the configuration and material properties of the two separating elements. This eliminates the need for integrated cooling channels and coolant systems, thereby maintaining reliability while achieving heat dissipation.
Solution Approach 2:
The two separating elements act as intermediaries for heat transfer between battery cells, replacing the need for coolant-based cooling channels. Heat is dissipated through the separating elements themselves via conduction and convection, eliminating the reliability issues associated with sealed coolant 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 solution provides a robust, simple, and effective means to prevent cell propagation and fire damage while efficiently dissipating heat from battery cells, ensuring the stability and safety of the battery module.
Implementation Method 1
The chamber is filled with a flame-retarding and insulating fluid, which can absorb external forces
Implementation Method 2
In order to dissipate heat from the battery cells via separating plates between the battery cells
Implementation Method 3
facilitating heat dissipation through embossments
Implementation Method 4
a potential burst opening for fluid release
Data Source
AI summary
A separating device for a battery module. The separating device includes a first separating element and a second separating element, which are arranged congruently with respect to one another and adjacent one another. Furthermore, the first separating element and the second separating element enclose a chamber between them, and the chamber is filled with a flame-retarding and/or insulating fluid.