EV Electrical Enclosure Airflow Layout for Cooling and Waterproofing
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Solution Overview
Problem
Existing electric vehicles face a trade-off between achieving high waterproof and cooling properties for electrical components, particularly when traveling on submerged road surfaces, as existing designs expose these components to the elements, enhancing cooling but compromising waterproofing.
Innovation Solution
The implementation of an accommodation case that houses electrical devices with intake and discharge ports for cooling air and a cooling fan, ensuring both waterproofing and effective cooling through controlled airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If electrical devices are exposed to the outside for cooling, then cooling property is enhanced, but waterproof property deteriorates
Solution Approach 1:
The accommodation case is segmented with separate intake ports and discharge ports for cooling air, allowing controlled airflow through specific pathways while maintaining overall enclosure integrity. This segmentation enables selective ventilation without compromising the waterproof seal of the entire housing.
Solution Approach 2:
The cooling fan acts as an intermediary device that actively manages air flow through the accommodation case. It creates controlled pressure differential to drive cooling air through designated ports while preventing uncontrolled water ingress, mediating between the need for cooling and waterproof protection.
2Reliability
If electrical devices are covered with accommodation case for waterproofing, then waterproof property is improved, but cooling property deteriorates
Solution Approach 1:
The accommodation case incorporates localized openings (intake ports and discharge ports) with specific functional qualities. These localized regions provide cooling airflow paths while the rest of the enclosure maintains full waterproof protection. The cooling fan is positioned at a specific location to optimize air flow distribution to thermal components.
Solution Approach 2:
The system transitions from passive enclosure to active thermal management by incorporating a cooling fan that dynamically controls air flow. The fan can be activated based on thermal conditions, creating dynamic pressure differentials that drive cooling air through the accommodation case while maintaining waterproof integrity throughout operation.
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
This configuration effectively prevents water intrusion while maintaining efficient cooling of electrical components, achieving high waterproof and cooling properties simultaneously.
Implementation Method 1
an intake port and a discharge port for cooling air are formed at an upper surface of the accommodation case, and a cooling fan is provided at the intake port or the discharge port
Data Source
AI summary
An electric apparatus installed in an electric vehicle, the electric apparatus includes a plurality of electrical devices including an electrical drive system, and an accommodation case accommodating the plurality of electrical devices. An intake port and a discharge port for cooling air are formed at an upper surface of the accommodation case, and a cooling fan is provided at the intake port or the discharge port.