Battery Module Barrier Assembly for Thermal Propagation Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery modules composed of multiple submodules face issues with rapid heat or flame propagation and require effective cooling structures.
Innovation Solution
A battery module design incorporating a barrier assembly with a heat insulating cover and a heat dissipation member, where the heat insulating cover blocks thermal propagation and the heat dissipation member enhances cooling efficiency by direct contact with a coolant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If multiple secondary batteries are placed inside a battery module to achieve large capacity and high output power, then the energy storage capacity increases, but heat or flames generated in any one submodule are rapidly propagated to other adjacent submodules
Solution Approach 1:
The battery module is divided into multiple submodules, each containing a subset of battery cells. This segmentation isolates thermal events to specific submodules, preventing rapid propagation across the entire battery module. The modular structure allows individual submodules to be contained and managed separately.
Solution Approach 2:
A barrier assembly is introduced as an intermediary component between adjacent submodules. This barrier assembly includes heat insulating covers and heat dissipation members that actively prevent and manage heat transfer. The barrier acts as a mediator that blocks thermal propagation while maintaining the structural integrity and thermal management of the battery module.
2Power
If multiple secondary batteries are placed inside a battery module to achieve large capacity, then the power output increases, but a structure for cooling the battery module rapidly and effectively is required
Solution Approach 1:
The barrier assembly merges two previously separate functions into a single integrated component: heat insulation (blocking thermal propagation) and heat dissipation (active cooling). By combining the heat insulating cover and heat dissipation member in one assembly, the patent achieves both thermal protection and active temperature management without requiring separate cooling structures for each submodule.
Solution Approach 2:
The barrier assembly serves multiple functions simultaneously: it acts as a thermal barrier, a heat dissipation pathway, and a structural support element. This multi-functionality reduces the overall complexity of the cooling system while effectively managing thermal loads across all submodules.
3Stability of the object's composition
If a barrier assembly is introduced to block heat propagation between submodules, then thermal stability improves, but the structural complexity of the battery module increases
Solution Approach 1:
The barrier assembly is itself segmented into modular components (heat insulating cover, heat dissipation member) that can be independently manufactured and assembled. This segmentation of the barrier structure makes the overall system more manageable and easier to assemble, reducing the practical complexity despite adding functional components.
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 blocks heat or flame propagation and provides high cooling efficiency, reducing temperature variations and enhancing thermal stability within the battery module.
Implementation Method 1
a heat insulating cover configured to block thermal propagation between the first cell stack and the second cell stack
Implementation Method 2
a heat dissipation member in contact with the insulating fluid and including a material with higher thermal conductivity than the heat insulating cover
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is a battery module comprising: a first cell stack and a second cell stack, each with a plurality of battery cells stacked; a housing having an inner space in which the first cell stack and the second cell stack are accommodated; an insulating fluid configured to flow in the inner space of the housing; and a barrier assembly disposed between the first cell stack and the second cell stack, wherein the barrier assembly includes: a heat insulation cover configured to be capable of blocking heat propagation between the first cell stack and the second cell stack; and a heat dissipation member in contact with the insulating fluid and including a material having a higher thermal conductivity than the heat insulation cover.