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相比传统汽车,纯电动汽车清洁环保,是未来的理想交通工具。纯电动汽车发展的好坏与否,影响着我国经济发展的结构与布局。当然,纯电动汽车在市场化的发展过程中面临诸多问题。我国想要在未来几年内发展好纯电动车,需要集中精力和力量解决电机技术、传动技术、电池技术、控制技术、基础设施等相关问题。对我国纯电动汽车的发展现状和路线方针进行了初步探讨。 相似文献
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《中国新技术新产品》2008,(11):49-50
电动汽车指以电能为动力的汽车,一般采用高效率充电电池或燃料电池为动力源。电动汽车无需再用内燃机,目前人们所说的电动汽车大多是指纯电动汽车,即是一种采用单一蓄电池作为储能动力源的汽车。它利用蓄电池作为储能动力源,通过电池向电机提供电能,驱动电动机运转,从而推动汽车前进。电能是二次能源,它可以来源于风能、水能、核能、热能、太阳能等多种方式,所以,它是非常有发展前景的替代能源汽车。电动汽车属于零排放汽车。从外形上看,电动汽车与日常见到的汽车并没有什么区别,区别主要在于动力源及其驱动系统。发展电动汽车的困难是目前蓄电池单位重量储存的能量太少,还因电动车的电池较贵,又没形成经济规模,购买价格较贵;至于使用成本,有些试用结果比汽车贵,有些试用结果仅为汽车的1/3,这主要取决于电池的寿命及当地的油、电价格。 相似文献
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<正>为了提高在电动汽车(包括纯电动汽车和插电式油电混合动力汽车)中使用的锂离子蓄电池模块的安全性能和能量密度,从而发展出能够延长电动车单次充放电的行驶里程和解决电动车安全问题的电池模块,美国能源部委托国家新能源实验室的丹尼尔·道体博士(Dr.Daniel H Doughty)发表了名为《电动车用蓄电池模块安全路线图指导》(Vehicle Battery Safety Roadmap Guidance)的报告书。此报告就电动车 相似文献
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进入21世纪以来,能源已经越来越成为困扰地球发展及生态变化的首要问题,电动汽车应运而生,但是电动汽车发展的前途面临着许多的难题,本文主要从电动车的便捷冲电方面进行初步的探讨,以更方便更快捷的解决电动车续驶里程短的问题。 相似文献
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目的基于电动汽车发展的3个设计研究平台,通过对不同发展平台上现有电动汽车的造型进行分析,来总结未来电动汽车造型设计的发展方向,为以后设计师进行电动汽车的设计提供一定的理论指导。方法首先通过对不同造型设计平台电动汽车形态特征线的提取实验,来提取出电动汽车造型设计中关键的造型特征线并对其进行认知分类。其次还要对电动汽车造型设计进行横向的分析和总结。结论不同造型设计平台电动汽车的造型拥有不同的发展趋势,但未来电动汽车的造型都应通过形态特征线这一最简洁直接的设计语言,来对其进行不同意象造型的设计表达,通过形态特征线的不同变化来追求其环保、和谐、高效的设计理念,并通过对一些细节进行重要的造型表达来体现电动汽车的特性。 相似文献
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The electromagnetic compatibility of electric vehicles is not only the important technology issue in researches,development and industrialization of electric vehicles,but also the key research area of ... 相似文献
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Electric vehicles emerge as the possible strategy for decarbonization and green transportation due to social demand. Researchers have made multiple efforts and initiatives as the demand surge for sustainable development in the electric vehicle industry. This study analyzes the relevant research of the industry, thereby explores electric vehicle industry development trends with a scientometrics-based data evaluation system, where three key topics are detected: “Vehicle Exhaust Emissions”, “Climate Change”, and “Integration”. The results are visualized in the view of clusters, timeline, and time zone to explore the dynamic direction and future trends of the industry. Further trend detection and forward-looking analysis suggest the significance of stakeholders and their interconnection. In response to the significant challenges in sustainable development, this study proposes the stakeholder engagement system in a comprehensive perspective. The system firstly reveals the driving forces behind the industry development, that is how different motivation and strategies orientate the industry towards sustainability. Then, it furtherly analyzes the commitments and efforts needed from multiple stakeholders, through policy implications, leading factors on demand side, and technology innovation requirements on supply side. The stakeholder engagement system may contribute to stakeholder synergy and resource optimization hence for electric vehicle industry sustainable development and novel ideas to other relevant research fields. 相似文献
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The future of automotive industry faces many challenges in meeting increasingly strict restrictions on emissions, energy usage and recyclability of components alongside the need to maintain cost competiveness. Weight reduction through innovative design of components and proper material selection can have profound impact towards attaining such goals since most of the lifecycle energy usage occurs during the operation phase of a vehicle. In electric and hybrid vehicles, weight reduction has another important effect of extending the electric mode driving range between stops or gasoline mode. This paper adopts parametric models for design optimization and material selection of sandwich panels with the objective of weight and cost minimization subject to structural integrity constraints such as strength, stiffness and buckling resistance. The proposed design procedure employs a pre-compiled library of candidate sandwich panel material combinations, for which optimization of the layered thicknesses is conducted and the best one is reported. Example demonstration studies from the automotive industry are presented for the replacement of Aluminum and Steel panels with polypropylene-filled sandwich panel alternatives. 相似文献
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Forschung im Ingenieurwesen - Since more attention has been paid to the development of pure electric vehicles, small and high efficiency of transmission system is the trend. The paper proposes... 相似文献
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Similar to conventional automobiles,same safety problems exist in electric vehicles.In the meantime,since its structural and power features are different,electric vehicles have their particular safety problems.Both domestic and international organizations have released some safety standards for electric vehicles which have also been added and complemented along with the development and research of electric vehicles. 相似文献
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随着新能源汽车产业的迅速发展,消费者对电动汽车续航里程的要求不断提高。高镍三元锂离子电池因其比能量高成为电动汽车中最具应用前景的动力电池,但该电池体系依然面临着低温性能差的问题。本文综述近年来高镍三元锂离子电池低温性能的研究进展,重点总结高镍三元锂离子电池低温性能的影响因素,一方面从热力学角度分析低温下高镍三元正极材料和石墨负极材料的结构变化、电解液相态和溶剂化结构变化以及黏结剂玻璃化转变对电池低温性能的影响;另一方面从动力学角度分析高镍三元电池低温放电过程中的速率控制步骤。归纳目前高镍三元锂离子电池低温性能的主要改善措施,其中低温电解液的设计包括优化溶剂、改善锂盐及使用新型添加剂三个方面,对电极材料低温性能的改善主要是通过体相掺杂、表面包覆及材料颗粒粒径降低的方式。总结电池中低温性能研究中存在的对电池低温热力学特性研究不够明确、对电池低温动力学过程研究方式单一以及对电池中的反应顺序存在的影响认识不足等问题。 相似文献
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目的 电动汽车造型设计既要满足电动特征的造型创新,又要保证品牌基因的识别性继承,在双重驱动和限制下,对电动汽车的品牌继承性设计方法进行研究。方法 基于形状文法理论,通过将提取出的既有品牌造型特征应用一定的变化规则进行推演,可产生大量满足品牌继承性要求的全新电动汽车造型。结果 电动汽车的造型变化规则包括品牌总结、技术要求和用户期望意象,三者共同约束和指导电动汽车的造型设计。结论 以宝马电动汽车设计为例验证了方法的可行性,方法可以在保证品牌识别的同时有效指导电动汽车的造型创新。 相似文献
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目的通过分析现有的电动汽车外观造型特征,对未来纯电动汽车外观造型的设计发展趋势进行探讨。方法以影响纯电动汽车外观造型的主要因素为基础,对纯电动量产汽车与传统汽车外饰造型进行对比,研究两者外观造型之间的特征差异,并分析当前纯电动汽车造型的局限性。同时,结合近年各大主机厂发布的纯电动概念车型,探讨这些影响因素所带来的造型空间,以及纯电动汽车造型特征设计的发展趋势。结论以电动机为驱动的纯电动汽车,其车身结构大大简化,且结构形式更加多样,零部件布置更为灵活,加之新技术和新材料的应用,以及用户需求细化、使用场景聚焦等所形成的汽车消费升级,使纯电动汽车的外饰造型变得更为感性和自由,为未来纯电动汽车区别于传统燃油汽车,展现多样化的造型设计提供了可能性。 相似文献