Battery Pack Exhaust Duct Staggered Guide Components
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Solution Overview
Problem
Existing battery pack exhaust ducts face inefficiencies in particle collection and space occupancy, with previous solutions either insufficient in cooling particles to prevent ignition or increasing the size of the battery pack due to cylindrical particle-removing mechanisms.
Innovation Solution
A battery pack exhaust duct design featuring a guide tube with exhaust inlets and outlets, and at least two exhaust guide components arranged in a staggered pattern within the guide tube, which meanders the exhaust flow to separate particles effectively and efficiently occupy space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If flat sheets are arranged within the exhaust channel to meander the flow, then the temperature and pressure of exhaust are lowered, but particle collection efficiency is insufficient
Solution Approach 1:
The exhaust duct is segmented into multiple sections with exhaust guide components arranged at different positions and orientations. This segmentation creates multiple meandering paths that enhance both cooling efficiency and particle collection by increasing the flow path length and creating turbulence zones where particles can be separated from the exhaust stream.
Solution Approach 2:
Different regions of the exhaust duct serve different functions: some regions focus on cooling through extended flow paths, while other regions create turbulence zones optimized for particle separation. The exhaust guide components are strategically positioned to create local turbulence zones that enhance particle collection without compromising overall cooling efficiency.
2Object-generated harmful factors
If a cyclonic particle-removing mechanism is used, then particles at high temperature are collected, but the mechanism increases the size of the battery pack
Solution Approach 1:
The particle removal function is merged with the existing exhaust duct structure rather than being implemented as a separate cylindrical mechanism. The exhaust guide components are integrated into the duct walls, creating turbulence zones that enable particle separation within the same space used for exhaust flow, thereby eliminating the need for additional volume.
Solution Approach 2:
Instead of using a cylindrical three-dimensional structure for particle removal, the invention uses two-dimensional exhaust guide components arranged within the existing duct cross-section. These components create turbulence and separation zones by extending into the flow path from the duct walls, achieving particle removal through planar structures rather than volumetric mechanisms.
3Object-generated harmful factors
If a cylindrical particle-removing mechanism is used, then particles are collected, but the space around the mechanism cannot be used efficiently
Solution Approach 1:
The particle removal function is combined with the exhaust duct structure itself, eliminating the need for a separate cylindrical mechanism. The exhaust guide components are integrated into the duct walls, allowing the same space to serve dual purposes: exhaust flow transport and particle separation, thereby maximizing space utilization.
Solution Approach 2:
The exhaust duct structure performs multiple functions: it transports exhaust gas, cools the exhaust through extended flow paths, and separates particles through turbulence zones created by the exhaust guide components. This multi-functionality eliminates the need for dedicated single-purpose components and optimizes space usage.
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 significantly enhances particle collection efficiency, preventing ignition and smoke production while allowing the battery pack to be compactly sized, with a collection efficiency of 99.9% as demonstrated by simulation results.
Implementation Method 1
Through the exhaust channel, exhaust that has been discharged from batteries and is at a high temperature and a high pressure is discharged from a case. Due to the plurality of flat sheets, a flow of the exhaust meanders. Consequently, the exhaust flows through a longer distance.
Implementation Method 2
The at least two exhaust guide components include a first exhaust guide component and a second exhaust guide component. The first exhaust guide component is disposed on a first interior surface of two interior surfaces of the guide tube that are opposite each other. The second exhaust guide component is disposed on a second interior surface of the two interior surfaces of the guide tube that are opposite each other.
Data Source
AI summary
A battery pack exhaust duct includes a guide tube, an exhaust inlet, an exhaust outlet, and exhaust guide components. The exhaust guide components include first and second exhaust guide components. Each of the exhaust guide components has a first part and a second part. The first part has a first end that is nearer to the interior surface of the guide tube. The first part extends away from the interior surface, and toward the exhaust inlet. The second part has a first end that is nearer to the first part. The second part extends toward the interior surface. The second part has a second end that is apart from the interior surface. The second end of the second part of the first exhaust guide component and the second end of the second part of the second exhaust guide component are displaced along axis X along which the guide tube extends.