Battery Case Venting Passages for Cooling Abnormal Release Gas
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Solution Overview
Problem
Conventional battery packs with ducts for gas discharge are complex and costly, necessitating a simpler and more affordable solution for efficiently cooling gases released during abnormal heat generation.
Innovation Solution
A battery case with an inner gas discharger and elongated gas exhaust passages within the outer wall, guiding gas from the inner discharger to outer discharge holes, which are activated at specific pressures to efficiently cool and discharge gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a duct is laid for gas discharge in conventional battery packs, then gas cooling is achieved, but the structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The gas exhaust passage is merged with the outer wall part of the battery case, integrating the cooling function into the existing structural component. This eliminates the need for separate duct structures while maintaining gas cooling capability, directly resolving the contradiction between cooling effectiveness and structural complexity
Solution Approach 2:
The outer wall part serves dual functions: providing structural protection for the battery and acting as a gas exhaust passage for cooling. By making the outer wall multi-functional, the patent achieves gas cooling without adding separate cooling structures, thereby reducing overall device complexity
2Temperature
If a duct is laid for gas discharge in conventional battery packs, then gas cooling is achieved, but manufacturing cost increases
Solution Approach 1:
The gas exhaust passage is merged with the outer wall part of the battery case, integrating the cooling function into the existing structural component. This eliminates the need for separate duct structures while maintaining gas cooling capability, directly resolving the contradiction between cooling effectiveness and structural complexity
Solution Approach 2:
The outer wall part serves dual functions: providing structural protection for the battery and acting as a gas exhaust passage for cooling. By making the outer wall multi-functional, the patent achieves gas cooling without adding separate cooling structures, thereby reducing overall device complexity
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 simplifies the structure and reduces manufacturing costs while effectively cooling gases released during abnormal heat generation, improving cooling performance.
Implementation Method 1
one or more gas exhaust passages including a height-direction passage part that is located inside an outer wall part having an outer surface in contact with an outer region
Implementation Method 2
The temperature of the gas is lowered in the duct, and the low-temperature gas is discharged to the outside
Data Source
AI summary
A battery case includes: a battery container including a battery containing chamber containing a plurality of batteries, and an inner gas discharge hole for discharging a gas generated in the batteries on at least one side in a height direction of the batteries fixed to the battery containing chamber; and one or more gas exhaust passages including first and second corner passage parts that are located inside an outer wall part including an outer surface in contact with an outer region and outside the battery container and extend along the height direction, and an outer gas discharge hole for discharging the gas to the outside, the one or more gas exhaust passages guiding the gas from the inner gas discharge hole to the outer gas discharge hole.