Battery Pack Vent Assembly for Ambient Air Gas Cooling
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Solution Overview
Problem
Existing battery pack venting systems do not effectively cool vented gas before discharge, leading to potential thermal energy intensity in the ambient environment.
Innovation Solution
A battery pack venting assembly that introduces ambient air into the vented gas passage to mix with and cool the vented gas before discharge, utilizing a radially outer and inner shield assembly with annular ambient air passages to facilitate air-gas mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If vented gas is discharged directly without cooling, then the venting system is simple and quick, but the thermal energy intensity in the ambient environment increases
Solution Approach 1:
The patent introduces ambient air as an intermediary cooling medium that mixes with the hot vented gas in the vent passage. The ambient air acts as a heat sink, absorbing thermal energy from the vented gas through convective mixing, thereby cooling the discharged gas without requiring active cooling systems or complex thermal management components
2Temperature
If ambient air is introduced to cool vented gas, then the temperature of discharged gas is reduced, but the device structure becomes more complex
Solution Approach 1:
The patent merges the venting function with the cooling function by integrating the ambient air passage and mixing mechanism directly into the vent assembly structure. The radially outer shield assembly and radially inner shield assembly are combined to form a unified venting and cooling system, eliminating the need for separate cooling devices and reducing overall system complexity
3Temperature
If multiple shield assemblies are used to facilitate air-gas mixing, then cooling effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the venting assembly into distinct functional components: a radially outer shield assembly and a radially inner shield assembly, each with specific ambient air passages. This segmentation allows for modular manufacturing and assembly, where each shield can be produced independently and then assembled together, potentially simplifying the manufacturing process despite the increased number of parts
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 assembly significantly reduces the temperature of the discharged gas by mixing it with ambient air, lowering the thermal energy intensity of the expelled products.
Implementation Method 1
mixing ambient air with the flow of vented gas
Implementation Method 2
introduces ambient air into the vented gas passage to mix with and cool the vented gas
Implementation Method 3
The assembly significantly reduces the temperature of the discharged gas by mixing it with ambient air, lowering the thermal energy intensity of the expelled products
Data Source
AI summary
A battery pack venting assembly includes a battery pack vent that communicates a flow of vented gas through a vented gas passage from a vented gas inlet to a vented gas outlet. The battery pack vent has at least one ambient air passage configured to communicate ambient air into the vented gas passage.