粘合翅片与挤压翅片散热器之间的关键区别是什么?
粘合翅片与挤压翅片散热器之间的关键区别是什么?

直接的回答是:粘合翅片散热器是高密度翅片应用的首选,其宽高比超过8:1,热性能要求超过传统挤压工艺所能达到的水平,而挤压翅片散热器仍然是翅片高度低于25毫米的标准几何形状中最具成本效益的解决方案。粘合翅片结构通过机械方式将单个翅片连接到基板上,通常使用导热环氧树脂或钎焊,能够实现单一铝挤压件在物理上无法实现的翅片密度和...

风扇散热器集成与主动冷却及被动冷却相比如何?
风扇散热器集成与主动冷却及被动冷却相比如何?

直接答案是:当电子元件的综合散热功率超过50至75瓦时,就需要采用带风扇散热器的主动冷却方案;而被动冷却仅适用于低于该阈值、环境气流恒定且声学噪声为主要考虑因素的系统。对于现代电子产品而言,决策取决于热预算、声学限制和可靠性目标,而不仅仅是是否有风扇。在高密度PCB设计中,主动散热方案相比被动方案可将热阻降低高达80%...

电动汽车充电器冷却的最佳热解决方案有哪些?
电动汽车充电器冷却的最佳热解决方案有哪些?

电动汽车快充基础设施的最佳热管理方案,是将液冷用于高功率电缆和连接器、强制风冷用于电力电子器件、以及相变材料用于热缓冲相结合,其中对于250 kW以上的系统,液冷是强制要求。对于350 kW的充电桩,液冷电缆组件在承载600 A电流时,表面温度可保持在60°C以下,而风冷等效方案则需要120 mm直径的电缆,并且会超过...

微通道冷板在液冷中能突破哪些性能极限?
微通道冷板在液冷中能突破哪些性能极限?

微通道冷板是高热流密度应用中最有效的液冷技术,可常规处理超过500 W/cm²的热流密度,是传统冷板的5至10倍。通过蚀刻或机加工出水力直径在100至500微米之间的流体通道,这些器件大幅增加了表面积与体积之比,将热阻降低至0.05 °C·cm²/W以下。本文提供了为严苛的电子、激光和功率转换系统选型微通道冷板所需的工...


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