Power Supply Cover Vent Layout for Balanced Heat Discharge
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Solution Overview
Problem
Existing power supply devices face challenges in achieving both comfort and ease of assembly/maintenance work due to uneven heat discharge from air outlets, which affects vehicle interior temperature uniformity and complicates cable insertion/removal.
Innovation Solution
A power supply device design with a cover featuring a larger first exhaust port overlapping the electric device and a smaller second exhaust port, allowing easy cable connection/removal without removing the cover, and minimizing heat discharge differences between ports to maintain temperature uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If one air outlet is made large enough to serve as a cable access opening, then cable insertion and removal becomes easy, but the opening areas of the two air outlets become different causing uneven heat discharge and non-uniform temperature distribution
Solution Approach 1:
The invention divides the cable access function and heat discharge function into separate components: a dedicated cable access opening and two air outlets for heat discharge. This segmentation allows each component to optimize its specific function without compromising the other, resolving the contradiction between ease of cable operation and temperature uniformity.
Solution Approach 2:
The cover is designed with multiple functions: it provides structural protection, enables cable access through a dedicated opening, and facilitates heat discharge through two air outlets. By making the cover multi-functional, the invention avoids the need to compromise any single function for the benefit of another.
2Ease of operation
If both air outlets are made large enough to serve as cable access openings, then cable insertion and removal becomes easy, but the opening areas increase excessively reducing cover strength
Solution Approach 1:
The invention separates the cable access function from the heat discharge function by providing a dedicated cable access opening distinct from the air outlets. This segmentation allows the air outlets to be optimized for heat discharge without needing to be excessively large for cable access, thereby maintaining cover strength while enabling easy cable operation.
Solution Approach 2:
The cover is designed with different opening areas at different locations: a larger cable access opening for easy cable insertion/removal and two smaller air outlets for heat discharge. This local differentiation optimizes each opening for its specific function while maintaining overall cover strength.
3Strength
If the opening areas of the two air outlets are made substantially the same, then cover strength is maintained, but it becomes difficult to insert and remove cables
Solution Approach 1:
The invention clearly separates the cable access function from the heat discharge function by providing a dedicated cable access opening that is distinct from the two air outlets. This segmentation resolves the contradiction by allowing the air outlets to maintain equal, smaller areas for strength and heat discharge, while the cable access opening provides the necessary size for easy cable operation.
4Device complexity
If one air outlet is used for cable access, then the number of openings is reduced, but the heat discharge balance between left and right sides is disrupted
Solution Approach 1:
The invention segments the functions by providing a dedicated cable access opening separate from the two air outlets used for heat discharge. This results in three total openings, which is actually an increase from using one outlet for dual purposes. However, this segmentation is necessary to maintain heat discharge balance while enabling cable access.
Solution Approach 2:
The cover is designed with different opening characteristics at different locations: a cable access opening optimized for cable insertion/removal and two air outlets optimized for heat discharge with equal areas to maintain left-right thermal balance. This local differentiation resolves the contradiction between device complexity and temperature balance.
Data Source
AI summary
A power supply device includes: a battery; an electric device; a case accommodating the battery and the electric device; and a cover covering a case opening. The cover is provided with a first exhaust port and a second exhaust port. A first exhaust member having a first exhaust passage through which air discharged from the first exhaust port flows is connected to the first exhaust port. A second exhaust member having a second exhaust passage through which air discharged from the second exhaust port flows is connected to the second exhaust port. The first exhaust port is provided so as to overlap at least a part of the electric device when viewed from an opening direction and has a larger opening area than the second exhaust port. A minimum cross-sectional area of the first exhaust passage is smaller than a minimum cross-sectional area of the second exhaust passage.