Battery Module Gas Discharge Cooling via Segmented Venting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery module designs are inefficient in reducing the temperature of gas ejected from battery cells, which can pose risks to vehicles and electrical devices.
Innovation Solution
The battery module incorporates a case with through-holes in its outer wall, dispersing gas ejected from the cells, utilizing a duct member with a gas diffusion chamber and fine holes to efficiently cool the gas through adiabatic expansion and air contact, thereby reducing the temperature of the discharged gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If gas is discharged directly from battery cells, then the discharge structure is simple, but the gas temperature is high and causes harm
Solution Approach 1:
The patent divides the discharge structure into multiple segments: the case with multiple through-holes acts as one segment for dispersing gas flow, and the insulating spacer with through-holes acts as another segment for additional gas discharge paths. This segmentation allows the hot gas to be dispersed into multiple smaller streams, reducing the temperature and harm of each individual jet while maintaining structural simplicity.
Solution Approach 2:
The insulating spacer serves as an intermediary component between the battery cells and the external environment. It provides additional through-holes that allow gas to be discharged through a中介 structure, further dispersing the hot gas and reducing its temperature before reaching external components. This intermediary structure adds cooling functionality without significantly increasing overall complexity.
2Object-affected harmful factors
If additional cooling structures are added to reduce gas temperature, then the gas temperature is reduced, but the module size increases
Solution Approach 1:
The patent merges the cooling function with the existing structural components of the battery module. The case and insulating spacer, which are already necessary for housing and insulation, are equipped with through-holes that simultaneously serve as cooling and discharge structures. This merging eliminates the need for separate cooling components, reducing module size while achieving effective gas temperature reduction.
Solution Approach 2:
The case and insulating spacer perform multiple functions: they provide structural support, electrical insulation, and gas cooling/discharge. By making these components multi-functional, the patent avoids adding dedicated cooling structures that would increase module volume. The through-holes in these universal components serve both structural and thermal management purposes.
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
This design effectively reduces the temperature of the gas discharged from the battery cells, preventing potential harm to vehicles or electrical devices and eliminating the need for additional cooling structures, thus maintaining a compact module size.
Implementation Method 1
utilizing a duct member with a gas diffusion chamber and fine holes to efficiently cool the gas through adiabatic expansion
Implementation Method 2
cool the gas through adiabatic expansion and air contact
Data Source
AI summary
A battery module includes: a plurality of battery cells and a case for housing the plurality of battery cells. The case has a plurality of through-holes which are provided to a wall part forming an outer face of the battery module and via which gas ejected from at least one of the plurality of battery cells is discharged in a dispersed manner.