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首页> 外文会议>ASME international conference on nanochannels, microchannels and minichannels >HIGH EFFICIENCY MINICHANNEL AND MINI-IMPINGEMENT COOLING SYSTEMS FOR HYBRID ELECTRIC VEHICLE ELECTRONICS
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HIGH EFFICIENCY MINICHANNEL AND MINI-IMPINGEMENT COOLING SYSTEMS FOR HYBRID ELECTRIC VEHICLE ELECTRONICS

机译：用于混合动力电动汽车电子的高效率迷你剪液和迷你冲击冷却系统

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摘要

Over the years, electronic equipment, especially semiconductor based devices, have found their applications in almost all fields of research. The demand for more power and performance from such electronic equipment has constantly been growing resulting in an increased amount of heat dissipation from these devices. While conventional cooling solutions have performed the task of heat removal, no straightforward extension has been possible for significantly high heat fluxes dissipated by smaller and more efficient electronic devices. Thermal management of high-density power control unit for hybrid electric vehicle is one such challenging application. Over the last few years, the performance of this power control unit has been improved and size has been reduced to attain higher efficiency and performance causing the heat dissipation as well as heat density to increase significantly. Efforts are constantly being made to reduce the PCU size even further and also to reduce the manufacturing costs. As a consequence, heat density will go up (～200 - 250 W/cm~2) and thus, a better high performance cooler/heat exchanger is required which can operate under the existing cooling system design (pressure drop limitation) and at the same time, maintain active devices temperature within optimum range (<120 -125°C) for higher reliability. The focus of this paper is to discuss the development of various cooling options for high heat flux dissipating devices with severe size constraints. A parametric and optimization study on the selected designs was performed. Finally, the optimized cooler/heat exchanger was tested under actual running conditions. The methodology was to explore various high performance cooling options such as impinging jets, pin fins, and ribbed mini-channels and to arrive at new promising, conceptual designs. These new designs were then compared against similar conventional designs both numerically and experimentally. Additionally, conjugate heat transfer simulations were performed on partial packaging model to compare the various designs. Experiments were also performed to validate the simulation models and characterize the meshing parameters to perform cost and time effective calculations/simulations.
机译：多年来，电子设备，特别是基于半导体的设备，在几乎所有的研究领域都发现了它们的应用。从这种电子设备的对更多功率和性能的需求不断增长，导致这些设备的散热量增加。虽然传统的冷却液进行了热量去除的任务，但是对于通过较小且更有效的电子设备消散的显着高热量的热量，并且没有直接的延伸。用于混合动力电动车辆的高密度功率控制单元的热管理是一种如此具有挑战性的应用。在过去几年中，这种功率控制单元的性能得到了改善，并且已经减少了尺寸以获得更高的效率和性能，导致散热和热密度显着增加。努力不断地进一步降低PCU大小，也可以降低制造成本。因此，热密度将上升（〜200 - 250W / cm〜2），因此，需要更好的高性能冷却器/热交换器，其可以根据现有的冷却系统设计（压降限制）和在同时，将有源器件温度保持在最佳范围内（<120-125°C），以获得更高的可靠性。本文的重点是讨论具有严重尺寸约束的高热通量耗散装置的各种冷却选择的开发。进行了对所选设计的参数和优化研究。最后，在实际运行条件下测试了优化的冷却器/热交换器。该方法是探讨各种高性能冷却选项，例如撞击喷射器，销鳍和罗纹迷你通道，并达到新的有前途，概念设计。然后将这些新设计与数字和实验相似的传统设计进行比较。另外，对部分包装模型进行共轭传热模拟以比较各种设计。还执行实验以验证模拟模型，并表征网格参数以执行成本和时间有效计算/模拟。

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