Propulsion Control Device Airflow Guide Member
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Solution Overview
Problem
Conventional vehicular semiconductor controllers have complex structures due to the inclusion of cooling fans, airflow guide plates, and airflow-straightening plates, which complicate the cooling airflow circulation within the housing.
Innovation Solution
A propulsion control device with a simplified structure featuring a housing, a gate controller, a fan, and an airflow guide member with a predetermined angle on the ceiling to guide air from the gate controller towards the opposite end of the housing, facilitating airflow circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cooling fan, airflow guide plate, and airflow-straightening plate are equipped, then cooling airflow circulation is achieved, but device complexity increases
Solution Approach 1:
The patent combines multiple airflow control functions into a single integrated housing structure. The housing itself is designed with internal geometric features including an inclined plane and curved surface that perform both airflow guidance and straightening functions, eliminating the need for separate guide plates and straightening plates. This merging of functions reduces the number of components while maintaining effective cooling airflow circulation around the semiconductor element.
2Productivity
If multiple airflow control components are added, then airflow circulation is improved, but manufacturing complexity increases
Solution Approach 1:
The housing is designed as an integrated component that incorporates airflow control features directly into its structure. The inclined plane and curved surface are formed as part of the housing geometry, allowing the housing to be manufactured as a single piece or pre-assembled unit. This integration simplifies the manufacturing process by reducing the number of separate parts that need to be produced and assembled, while still achieving effective airflow circulation.
Solution Approach 2:
The housing serves multiple functions simultaneously: it provides structural enclosure for the semiconductor element, acts as a mounting structure for the cooling fan, and incorporates built-in airflow guidance and straightening features. This multi-functionality eliminates the need for separate dedicated airflow control components, thereby simplifying manufacturing while maintaining productivity.
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 enables efficient airflow circulation within the housing, improving cooling efficiency and uniform heat distribution while reducing the complexity of the structure.
Implementation Method 1
a fan (5) disposed below the gate controller (4), the fan (5) being configured to feed air to the gate controller (4)
Implementation Method 2
an airflow guide member (6) to guide air passed through the gate controller (4) flow toward the other end side of the interior space (21) of the housing (2) in the longitudinal axis direction (X)
Data Source
AI summary
A propulsion control device of the present disclosure includes: a housing; a gate controller disposed at one end side of an interior space of the housing in a longitudinal axis direction X, the gate controller being configured to control a power converter; a fan disposed under the gate controller, the fan being configured to feed air to the gate controller; and an airflow guide member disposed at the side opposite to the fan relative to the gate controller, having, on an interior face of a ceiling of the housing, an airflow guide face having a predetermined angle with respect to the vertical direction, the airflow guide member being configured to guide air passed through the gate controller to flow toward the other end side of the interior space of the housing in the longitudinal axis direction X.