Methodological Development and Design of Electrocaloric Cooling Systems for Electric Vehicle Applications

电动汽车应用电热冷却系统的方法开发和设计

• 批准号: 226800326
• 负责人: Professorin Dr.-Ing. Annika Raatz
• 金额: --
• 依托单位: Institut für Montagetechnik (match)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/226800326?language=en
• 关键词: Methodological; Development; Design; Electrocaloric; Cooling

Common refrigeration and air-conditioning techniques using vapor compression are associated with greenhouse gases and high energy consumption. Solid state refrigeration based on ferroelectric effect has attracted considerable attention in recent years because of its high adiabatic temperature change and good efficiency. Up to now the research was mainly focused on material development, especially the optimization of the electrocaloric material properties like temperature change, operation temperature and electric field strength. Practical applications are hardly visible. Existing solutions are mostly concepts designed for low heat transfer rates (e.g. chip cooling). Methodical approaches of the electrocaloric material integration into cooling applications are missing. The main objective of this project is the application-oriented development of generic concepts and set-ups for electrocaloric cooling devices. Within the scope of concept development new guidelines and methods to design electrocaloric cooling solutions will be elaborated. Electromobility is a perfect example that meets the requirements of electrocaloric materials. Small amounts of heat need to be dissipated and high voltages up to 400 V are available. Heat transfer concepts based on linear and rotational movement as well as stationary designs will be developed using the example of Li-ion battery cooling. Thermal FEA-simulations will be used to dimension and optimize the EC-concepts. The optimized concepts will then be set-up and characterized concerning cooling power and efficiency. Further on control concepts will be developed to increase the efficiency. In addition to the characterization of the cooling efficiency a mechanical and functional fatigue analysis will be done. The application potential will be evaluated by comparing the developed concepts with existing conventional and other solid state cooling solutions.

使用蒸汽压缩的普通制冷和空调技术与温室气体和高能耗有关。基于铁电效应的固体制冷因其绝热温变大、效率高而受到广泛关注。到目前为止，研究主要集中在材料开发上，特别是电热材料性能的优化，如温度变化，工作温度和电场强度。实际应用几乎看不到。现有的解决方案大多是为低传热率设计的概念（例如芯片冷却）。缺乏将电热材料集成到冷却应用中的方法。该项目的主要目标是面向应用开发电热冷却设备的通用概念和设置。在概念开发的范围内，将阐述设计电热冷却解决方案的新准则和方法。电动汽车是一个完美的例子，满足电热材料的要求。需要散发少量热量，并提供高达400 V的高压。将以锂离子电池冷却为例，开发基于线性和旋转运动以及固定设计的传热概念。热FEA模拟将用于确定EC概念的尺寸并进行优化。然后将建立优化的概念，并在冷却功率和效率方面进行表征。将进一步开发控制概念以提高效率。除了表征冷却效率外，还将进行机械和功能疲劳分析。通过将开发的概念与现有的传统和其他固态冷却解决方案进行比较，评估其应用潜力。