70AB01a GJR2312000R0002 ABB耦合模块

　　实际上，将功率密集型组件构建为具有翅片和脊而不是平面的特征会增加它们的表面积，从而提高它们向周围环境散热的速度。

　　然而，翅片在电动汽车中的应用有限，因为它们会显着增加电力系统的重量。

　　空气冷却，相对冷空气在热物体表面的循环，是另一种相对简单的技术，因为它可以更快地冷却它。

　　空气冷却通常具有成本效益，并已用于某些电动汽车模型（包括日产聆风的早期模型）。然而，这个系统可能相对耗能，依赖空气冷却的汽车在炎热的天气里可能会遇到麻烦。8

　　液体冷却是控制电动汽车电池和动力系统温度的最有效方式。

　　在整个电力系统中管道液体冷却剂有助于有效散热，虽然它相对昂贵和复杂，但它为电动汽车中的电子系统和电池组提供了更的温度控制。

　　随着制造商在电动汽车中安装容量越来越大的电池组，这些冷却系统必须能够应对的需求也在增加。

　　随着充电率和电池容量的增加，液体冷却系统变得越来越重要和复杂。9,10当今电动汽车中的液体冷却系统可能需要将冷却系统细分为多个回路，并在电池冷却剂和空调系统制冷剂之间进行热交换。

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　　Effectively, building power-intensive components to feature fins and ridges as opposed to flat faces increases their surface area, thereby improving the rate at which they can dissipate heat to their surroundings.

　　However, fins have limited application in electric vehicles as they can increase the weight of power systems significantly.

　　Air cooling, the circulation of relatively cool air across the surface of a hot object, is another comparatively simple technology as it will cool it down more rapidly.

　　Air cooling is typically cost-effective and has been employed in some electric car models (including early models of the Nissan Leaf). However, this system can be relatively energy-intensive, and cars that are dependent on air cooling can run into trouble in hot weather.8

　　Liquid cooling is the most efficient way of controlling the temperature of batteries and power systems in electric vehicles.

　　Piping liquid coolant throughout power systems facilitates effective heat removal and while it is comparatively expensive and complex, it offers more precise temperature control of electronic systems and battery packs in electric vehicles.

　　As manufacturers are driving towards installing increasingly higher capacity battery packs in electric vehicles, the demands that these cooling systems must be able to cope with are also increasing.

　　Liquid cooling systems are becoming more crucial and complex as charging rates and battery capacity increase.9,10 Liquid cooling systems in today’s electric vehicles may necessitate subdivision of the cooling system into several circuits and heat exchange between battery coolant and A/C system refrigerant.