Battery Unit Intermediate Duct Cutwater Water Leakage
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Solution Overview
Problem
In battery units for vehicles, the stacking of upper and lower battery modules in the direction of cooling air flow can lead to conduction issues due to continuous water flow from the upper to the lower module, potentially causing performance degradation and safety concerns.
Innovation Solution
An intermediate duct with a cutwater portion along its inner circumference is introduced between the upper and lower battery modules to prevent the continuous flow of water, ensuring that cooling air is not compromised and maintaining the electrical insulation between the modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If upper and lower battery modules are stacked in the flow direction of cooling air, then cooling efficiency is improved, but water leakage causing conduction between modules occurs
Solution Approach 1:
The intermediate duct is divided into an upper duct portion and a lower duct portion that are separated by the cutwater portion. This segmentation prevents continuous water flow from the upper battery module to the lower battery module, thereby maintaining electrical insulation while preserving the stacked cooling configuration.
Solution Approach 2:
The intermediate duct with the cutwater portion acts as an intermediary component between the upper and lower battery modules. It allows cooling air to pass through while blocking the path of condensation water, thus mediating between the need for efficient cooling and the need to prevent conduction.
2Reliability
If intermediate duct is added between battery modules, then water leakage is prevented, but device complexity increases
Solution Approach 1:
The intermediate duct combines multiple functions into a single component: it serves as a support structure for the upper battery module, a barrier to prevent water leakage, and a channel for cooling air flow. The cutwater portion is integrated directly into the intermediate duct structure, reducing the need for additional separate components.
Solution Approach 2:
The intermediate duct performs multiple functions simultaneously: structural support, water leakage prevention, and cooling air channeling. This multi-functionality reduces the need for additional components and simplifies the overall device structure while maintaining reliability.
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 effectively prevents conduction between the upper and lower battery modules, enhancing the reliability and performance of the battery unit by ensuring effective cooling and maintaining electrical insulation, thus preventing performance degradation and safety issues.
Implementation Method 1
a cutwater portion for cutting a continuous flow of water from the inside of the upper battery module to the inside of the lower battery module is provided, along an inner circumference of the intermediate duct
Implementation Method 2
a battery module cooled by an air-cooled cooling mechanism includes multiple passages between multiple batteries arranged in parallel, and the batteries are cooled by passing cooling air through the passages
Data Source
AI summary
A lower battery module includes lower batteries and lower cooling air passages. An upper battery module is provided at an downstream of the lower battery module in a flow direction of the cooling air. The upper battery module includes upper batteries and upper cooling air passages. An intermediate duct is provided between the upper battery module and the lower battery module to prevent leakage of the cooling air. The intermediate duct includes a cutwater portion. The cutwater portion is provided along an inner circumference of the intermediate duct to cut a continuous flow of water from an inside of the upper battery module to an inside of the lower battery module.