Variable Density Fin Heat Dissipation Plate for Automotive Inverter Cooling
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Solution Overview
Problem
Existing liquid coolers are inadequate for effectively dissipating heat from high-speed chips, leading to inefficiencies in heat management.
Innovation Solution
A low pressure drop automotive liquid-cooling heat dissipation plate with a heat dissipation plate body and three fin sets, where the fin sets are arranged in different densities and shapes to minimize pressure drop and maintain temperature homogeneity, combined with an enclosed cooler design that includes a heat dissipation base forming a chamber for the fins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the heat dissipation plate uses uniform fin density across all regions, then the manufacturing is simplified, but the pressure drop becomes excessive and energy consumption increases
Solution Approach 1:
The patent applies different fin densities to different heat dissipation regions based on local heat generation characteristics. The first heat dissipation region (with larger projection area) receives fewer fins, while the second and third regions (with smaller projection areas) receive more fins. This local differentiation reduces pressure drop in high-heat-generation areas while maintaining effective heat dissipation in lower-heat areas, thereby reducing overall energy consumption without significantly complicating manufacturing.
2Productivity
If the heat dissipation plate uses higher fin density to improve heat dissipation capacity, then the heat dissipation performance improves, but the pressure drop increases excessively
Solution Approach 1:
The patent implements variable fin density where the first heat dissipation region has lower fin density and the second and third regions have higher fin density. This local optimization ensures that heat dissipation capacity is enhanced where needed while preventing excessive pressure drop in regions with lower heat generation, achieving a balance between heat dissipation performance and pressure drop.
Solution Approach 2:
The heat dissipation plate is segmented into three distinct heat dissipation regions based on the projection areas of the power component sets. Each region is assigned an appropriate fin density tailored to its specific heat dissipation needs, allowing the system to achieve high overall heat dissipation capacity while controlling pressure drop through localized optimization.
3Stability of the object's composition
If the heat dissipation plate uses higher fin density to maintain temperature homogeneity, then the temperature uniformity improves, but the pressure drop increases
Solution Approach 1:
The patent uses different fin densities in different regions to achieve temperature homogeneity across the power component sets. The first heat dissipation region with lower fin density is compensated by its larger projection area, while the second and third regions with higher fin density have smaller projection areas. This local differentiation ensures uniform temperature distribution without causing excessive pressure drop.
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 reduces pressure drop, prevents excessive energy consumption, and ensures temperature uniformity across traction inverter power component sets, enhancing heat dissipation performance.
Implementation Method 1
The first heat dissipation surface is in contact with a first traction inverter power component set, a second traction inverter power component set, and a third traction inverter power component set... The second heat dissipation surface is in contact with a cooling fluid
Implementation Method 2
A low pressure drop automotive liquid-cooling heat dissipation plate includes a heat dissipation plate body, a first fin set, a second fin set, and a third fin set... A surface area formed by the first fin set located in the first heat dissipation region and in contact with the cooling fluid is less than a surface area formed by the second fin set located in the second heat dissipation region and in contact with the cooling fluid
Data Source
AI summary
A low pressure drop automotive liquid-cooling heat dissipation plate and an enclosed automotive liquid-cooling cooler having the same are provided. The low pressure drop automotive liquid-cooling heat dissipation plate includes a heat dissipation plate body and three fin sets. The heat dissipation plate body has a first heat dissipation surface and a second heat dissipation surface that are opposite to each other. The first heat dissipation surface is in contact with three traction inverter power component sets, and the second heat dissipation surface is in contact with a cooling fluid. Three heat dissipation regions that are spaced equidistantly apart from each other and that have a same size are defined on the second heat dissipation surface along a flow direction of the cooling fluid, and respectively correspond to three projection areas formed by projecting three traction inverter power component sets on the second heat dissipation surface.