Battery Module Exhaust Duct Isolation Design
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Solution Overview
Problem
Efficiently forming isolated exhaust and cooling ducts within a battery module is challenging due to the limited space, and existing solutions often compromise on battery capacity or module size.
Innovation Solution
A battery module design featuring a partition wall, first plate, and second plate with a through path that separates the exhaust duct from the cooling duct, preventing high-temperature gases from entering the cooling duct and ensuring effective isolation between the two ducts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cooling duct and exhaust duct are both formed in the battery module, then cooling function and safety function are both achieved, but the space inside the battery module becomes insufficient and battery capacity is reduced
Solution Approach 1:
The battery module is divided into multiple spaces by partition walls: a first space for exhaust duct, a second space for cooling duct, and a third space for batteries. This segmentation allows independent formation of exhaust and cooling ducts without interfering with battery arrangement, resolving the space conflict while maintaining both safety and cooling functions.
Solution Approach 2:
The exhaust duct and cooling duct are arranged in different spatial dimensions and directions within the battery module. The exhaust duct extends in one direction while the cooling duct extends in another direction, allowing both ducts to coexist without occupying the same space, thus preserving battery capacity while providing both functions.
2Reliability
If a cooling duct and exhaust duct are both formed in the battery module, then cooling function and safety function are both achieved, but the module size increases
Solution Approach 1:
The first plate serves multiple functions: it forms part of the exhaust duct structure, part of the cooling duct structure, and provides a mounting surface for the fan. This multi-functionality reduces the number of separate components needed, allowing both cooling and exhaust functions to be integrated into a compact module design without increasing overall size.
Solution Approach 2:
The exhaust duct and cooling duct are nested within the same battery module housing, with each duct occupying its own designated space. The ducts are arranged to utilize available space efficiently, with one duct potentially passing through or alongside the other, allowing both functions to be contained within a compact module footprint.
3Object-affected harmful factors
If the exhaust duct and cooling duct are isolated from each other, then high-temperature gases are prevented from entering the cooling duct, but the structural complexity increases
Solution Approach 1:
Partition walls serve as intermediary structures that separate the exhaust duct space from the cooling duct space. These partition walls are integrated into the existing module structure and serve dual purposes: providing structural support and preventing heat transfer between ducts, thus protecting the cooling duct without requiring complex additional components.
Data Source
AI summary
A battery module includes a partition wall to separate an upper space from a lower space, a first plate that defines the upper space together with the partition wall, and a second plate that is disposed above the first plate such that a gap is left between the first and second plates. A case has an opening that is formed to let the gap communicate with an outside of the case. The first plate has a through hole through which the upper space and the gap communicate. The battery module further includes a through path passing through the partition wall and each of the plates to let the lower space communicate with a space above the second plate. The upper space and the gap constitute an exhaust duct, while the lower space and a top space constitute a cooling duct.