Vehicle Liquid-Cooling Heat Sink Plate with Variable Fin Areas
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Solution Overview
Problem
Current liquid-cooling radiators fail to effectively dissipate heat for automotive power chips operating at higher speeds, necessitating improved heat dissipation solutions.
Innovation Solution
A vehicle liquid-cooling heat sink plate with fin sets of varying surface areas, including a heat-dissipating plate body with distinct fin sets and heat-dissipating surfaces, optimized for contact with traction inverter power components and cooling fluid, and a closed radiator design with a heat-dissipating base forming a chamber for enhanced heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional liquid-cooling radiators are used, then the cooling system is simple and quiet, but the heat dissipation capability is insufficient for high-speed automotive power chips
Solution Approach 1:
The radiator is divided into multiple independent heat dissipation channels, each with dedicated inlet and outlet ports. The heat dissipation plate is segmented into multiple regions with different fin configurations, allowing each segment to handle specific heat loads independently, thereby enhancing overall heat dissipation capability while maintaining manageable structural complexity
Solution Approach 2:
Different regions of the heat dissipation plate are equipped with fin sets having different surface areas and configurations tailored to the local heat generation characteristics. High-heat-generation areas receive fin sets with larger surface areas, while lower-heat areas use smaller fin sets, optimizing heat dissipation efficiency across the entire component without uniform over-engineering
2Power
If fin sets with larger surface areas are used, then heat dissipation efficiency improves, but fluid pressure drop increases and energy consumption rises
Solution Approach 1:
Fin sets with larger surface areas are strategically placed only in regions with high heat generation, while regions with lower heat generation use fin sets with smaller surface areas. This localized approach ensures adequate heat dissipation where needed while minimizing unnecessary surface area that would increase pressure drop and pump energy consumption in lower-heat regions
Solution Approach 2:
Instead of providing uniform large surface area fins across the entire radiator, the design applies larger fin surface areas partially only where heat generation exceeds certain thresholds. This partial action approach achieves sufficient heat dissipation for high-heat regions without the excessive energy penalty of large fins throughout the entire system
3Ease of manufacture
If uniform fin sets are used across all heat dissipation areas, then manufacturing is simplified, but temperature uniformity across different power components deteriorates
Solution Approach 1:
The heat dissipation plate is divided into multiple zones with different fin set configurations matched to the local thermal requirements of underlying power components. Components generating more heat are positioned under fin sets with larger surface areas, while components with lower heat generation are positioned under smaller fin sets, achieving temperature uniformity across all components despite manufacturing complexity
Solution Approach 2:
The radiator structure is segmented into multiple independent heat dissipation zones, each with its own fin set configuration optimized for the local thermal load. This segmentation allows temperature uniformity to be achieved across different components by tailoring fin characteristics to each zone's specific requirements, rather than using a single uniform fin design for all components
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 manages fluid pressure and temperature uniformity, reducing energy consumption and ensuring consistent cooling performance for traction inverter power components.
Implementation Method 1
the second heat-dissipating surface being used for contacting a cooling fluid
Implementation Method 2
along a flow direction of the cooling fluid being divided into a first, a second and a third heat-dissipating area
Implementation Method 3
a first fin set, a second fin set and a third fin set, the first, the second and the third fin set being respectively located on the first, the second and the third heat-dissipating area
Implementation Method 4
a surface area of the first fin set located in the first heat-dissipating area in contact with the cooling fluid is less than or equal to a surface area of the second fin set located in the second heat-dissipating area in contact with the cooling fluid
Data Source
AI summary
A vehicle liquid-cooling heat sink plate having fin sets with different surface areas. The vehicle liquid-cooling heat sink plate includes a heat-dissipating plate body and three fin sets. The heat-dissipating plate body has a first heat-dissipating surface and a second heat-dissipating surface that are opposite to each other, the first heat-dissipating surface is used for contacting three traction inverter power component sets, and the second heat-dissipating surface is used for contacting a cooling fluid. The second heat-dissipating surface of the heat-dissipating plate body along a flow direction of the cooling fluid is divided into three heat-dissipating areas which are spaced apart from each other, and the three heat-dissipating areas respectively correspond to three projection areas that are respectively generated by the three traction inverter power component sets.