我国新能源汽车动力电池回收现状及对策

近年来,新能源汽车因其节能减排特性在我国得到了快速发展,但同时也衍生出如何对大量废旧动力电池进行回收的问题。废旧动力电池具有梯次利用的特性,本文对我国新能源汽车动力电池的回收流程进行了介绍,总结当前动力电池的回收模式可分为自主回收、第三方回收和联合回收模式,并对不同模式的优缺点进行了详细分析。在此基础上,本文指出当前回收面临的主要挑战来自三个方面,分别是回收体系尚未明确、回收过程缺少监管以及补贴机制缺失。为此,本文提出相应对策,为我国新能源汽车动力电池的回收体系构建提供参考,以促进社会经济的可持续发展。     

中国面对全球动力电池"荒"的解决方案

动力电池是新能源汽车的"心脏",在一定程度上掌管着新能源汽车发展的命脉.对车企来说,动力电池就像悬在头上的"达摩克利斯之剑",其性能质量、生产供应和服务保障决定着新能源汽车的生命持久力.随着新能源汽车热度不断提升,全球动力电池供需缺口引发电池"荒",中国唯有突破动力电池产能、原材料、技术三大困境,化危机为先机,才能在这场全球竞技中实现弯道超车,占领优势地位.     

动力电池回收再利用相关问题研究

正在国家政策的引导和推动下,我国新能源汽车产业发展迅猛。工信部数据显示,2009-2016年上半年累计生产新能源汽车67.4万辆。国务院发布的《节能与新能源汽车产业发展规划(2012-2020年)》,到2020年,纯电动汽车和插电式混合动力汽车累计产销量超过500万辆。中国汽车技术研究中心预测,到2020年前后,我国纯电动(含插电式)乘用车和混合动力乘用车动力电池累计报废量将达到12-17万吨。车用动力电池的报废渐成规模,如何处置退役动力电池将是影响新能源汽车发展的重大课题。     

进一步强化政策支持 促进新能源汽车产业高质量发展

<正>来自国务院政策例行吹风会消息,近日,国务院常务会议研究了促进新能源汽车产业高质量发展的政策措施。例行吹风会介绍了促进新能源汽车产业高质量发展有关情况。四项措施应对新能源汽车市场化发展问题面对新能源汽车市场化发展不均衡不充分问题,如何应对？例行吹风会介绍,采取四项措施,进一步强化政策支持。一是提升产品供给质量。支持开展高安全全气候动力电池、热泵空调、整车热管理等技术攻关,提升动力电池热失控技术标准,以进一步增强新能源汽车低温适用性和安全性,满足高寒地区消费者需求。二是加大重点领域推广。组织开展公共领域车辆全面电动化先行区试点,编制实施重卡电动化工作方案,加快提升城市公交、物流、     

新能源汽车：骨干企业要发挥骨干作用

汽车骨干企业在发展新能源汽车方面要抓住机遇，发挥骨干作用，力争在制约新能源汽车发展的瓶颈方面取得突破。首先，要以节能和新能源汽车推广示范工程为契机，扎实推进产业化。要切实加大技术研发和技术改造对动力电池、控制系统以及驱动电机等关键零部件以及配套材料发展的支持，提高产品设计制造水平和质量控制能力，     

我国动力锂电池行业现状和发展趋势

作为新能源汽车核心部件之一的动力电池,随着新能源汽车行业的崛起迅速发展起来。文章对动力锂电池的应用现状、市场规模、产业链布局等情况进行分析;结合现状,对动力锂电池的制约因素和先进技术进行展望。     

新能源汽车行业保持高速发展态势 动力电池装机量攀升

<正>我国新能源汽车产业在全球强势崛起,新能源汽车产销量连续7年稳居全球第一。同时,国内动力电池企业装车量领跑全球市场,上游锂矿公司全球布局优质锂资源。“我国新能源汽车产业已进入规模化快速发展新阶段,成为引领全球汽车产业电动化转型的重要力量。”工信部新闻发言人、运行监测协调局局长罗俊杰表示。     

三元锂电池,你安全吗?

正动力电池作为新能源汽车的"心脏",一直有着磷酸铁锂与三元锂电池的技术路线之分。前不久,一则关于三元材料电池的新闻引起轩然大波:暂停三元锂电池客车列入新能源汽车推广应用推荐车型目录。瞬时间,一场关于三元锂电池安全性的辩论正式上演。     

我国动力电池下一阶断发展形势分析

2019年,对于中国动力电池市场来说,注定会是难以忘记的一年,2019年1~12月,中国动力电池累计装机量为62.2GWh,同比累计增长9.2%。尽管从全年来看,行业仍然是微增长的态势,但从下半年的情况来看,却不那么乐观。     

促进汽车租赁业发展的对策研究

汽车租赁业作为我国的朝阳产业,其发展前景广阔但路途艰辛。通过借鉴国外汽车租赁业发展过程中的经验,对促进我国汽车租赁业发展对策进行探讨。     

Survey of R&D in PRT systems

A survey of research and development in advanced transit has been made by Chalmers University of Technology in Gothenburg in cooperation with Trans21 in Boston. Summary findings are reported for fourteen academic research programs and ten development programs for PRT. An earlier version of this paper was presented at the International Conference of PRT and other Emerging Systems held in Minneapolis in 1996.     

The Impact of Container Type Diversification on Regional British Port Development Strategies

Abstract

Despite a concentration of container traffic in the southeast of the UK over the last few decades, regional ports are attempting new development strategies to capture or retain specific traffic segments. These include intra-European short-sea traffic and a potentially increasing feeder market. These trends are reflected in the movement of different container types, which result in a number of planning challenges related to changing infrastructural and operational requirements. This paper uses highly disaggregated data on container type movements to address three issues that can inform these planning challenges. First, the imbalance of trade resulting in empty container repositioning; second, the requirement for gauge-cleared rail routes to cater for the increasing proportion of high-cube containers; and third, the specialisation of European short-sea traffic at secondary UK ports. The results reveal the disproportionate repositioning of empty containers at Scottish ports and the importance of 45?ft, high-cube and pallet-wide containers at regional ports, highlighting their focus on intra-European short-sea traffic and raising difficulties relating to their lower quality of landside infrastructure (particularly rail) in comparison to the large south-eastern ports. The potential repercussions on hinterland infrastructure development raise questions about both public and private sector responses to regional port development.     

管道风险分析指数评分法中分值调整初探

管道风险分析指数评分法中重要步骤之一就是确定影响管道事故因素的权重,各个管道风险因素在整个管道事故中所占的权重是不相同的。针对目前管道风险分析指数评分法基本假设之一（各因素的分值范围都是0～100分）,为了更加客观、准确、合理地反映各个风险因素对于管道事故的影响程度,提出并论述了依据层次分析法的数学逻辑性进行综合计算得出管道风险因素的权重,然后对评分法中各个因素的最高分值,根据其权重不同进行相应调整,从而增强评价者对风险因素的认识和评判能力,提高管道风险评价结果的准确性。     

A century of evolution of the accessibility concept

The concept of accessibility has acquired numerous meanings along multiple dimensions during the century of its evolution. This essay argues for the salience of two dimensions: application-based and definition-based. In its application, accessibility has incorporated positive and normative dimensions which have varied in prominence over time. In its definition, accessibility has varied between a mode of evaluation incorporating measured mobility and proximity, on the one hand, and a predefined market basket of urbanist improvements to transportation and land use systems, on the other. Advocates of the accessibility shift should emphasize both the measured approach to accessibility and accessibility’s normative side.     

天然气站往复式压缩机活塞失效分析

针对天然气站往复式压缩机活塞的断裂事故,运用失效分析方法,开展了活塞断口扫描电镜分析、能谱和金相分析。根据断口形貌的电镜和金相观察结果,结合理论知识,分析确定了该活塞发生断裂事故的主要原因,即在特定工况下该活塞的材料缺陷是造成断裂的主要因素。     

中国城市道路规划方位性问题研究

文章结合中国的传统建筑文化理念和现代科学原理,从历史文化、能源节约、环境保护、房地产定价、交通安全等多方面分析研究了城市道路在规划和设计时所应遵从的定向规则。     

Planning guidelines for metro–bus interchanges by means of a pedestrian microsimulation model

The big paradigm for cities nowadays is to study the movement of pedestrians at the interface between metro and bus systems – metro–bus interchanges. When these interchanges are not well designed, walking is inefficient and can be unsafe for pedestrians. This paper analyses, by means of a pedestrian microsimulation model, metro–bus interchange spaces in order to propose planning guidelines for the city of Santiago de Chile. Specific objectives are (1) to identify the variables that provide efficiency and safety in those spaces; (2) to simulate different scenarios using the pedestrian simulation model LEGION; (3) to propose planning and design guidelines for pedestrian spaces at metro–bus interchanges; and (4) to contrast the recommendations in the recently opened terminal station on Line 1 of Metro de Santiago: Los Dominicos Station.     

Predicting queue variability to enable analysis of overload risk

ABSTRACT

Predicting the risk of traffic demands and delays exceeding critical limits at road junctions, airports, hospitals, etc., requires knowing how both mean and variance of queue size vary over time. Microscopic simulation can explore variability but is computationally demanding and gives only sample results. A computationally efficient approximation to the mean is used in many modelling tools, but only empirical extensions for variance in particular situations have been available. The paper derives theoretical formulae for time-dependent and equilibrium variance, believed to be novel and to apply generally to queues covered by the Pollaczek–Khinchin mean formula, and offering possible structural insights. These are applied in an extended approximation giving mutually consistent mean and variance estimates with improved accuracy. Tests on oversaturated peak demand cases are compared with Markov probabilistic simulation, demonstrating accuracy (R^2?>?0.99) for typical random, priority-like (M/M/1) and traffic-signal-like (M/D/1) queues. Implications for risk analysis, planning and policy are considered.     

生命大过天

文章介绍了广西壮族自治区公路管理局开展专项行动,治理以桥梁为重点的交通基础设施安全隐患的情况,针对在役桥梁、在建桥梁和农村公路桥梁存在的安全隐患提出了相应的治理措施。