浅析电动汽车电池快速充电

正本文根据对目前关于电动汽车快速充电的文献研究,介绍了电动汽车快速充电的主要方法、快速充电的几种拓扑结构,并分析了电动汽车快速充电的发展趋势。伴随着环境污染、石油短缺以及电池技术不断发展,新能源汽车动力系统的研究已经成为了汽车工业一个重要的发展方向。电池作为电动汽车动力系统的能量源头,     

浅析电动汽车电池快速充电

本文根据对目前关于电动汽车快速充电的文献研究,介绍了电动汽车快速充电的主要方法、快速充电的几种拓扑结构,并分析了电动汽车快速充电的发展趋势。伴随着环境污染、石油短缺以及电池技术不断发展,新能源汽车动力系统的研究已经成为了汽车工业一个重要的发展方向。电池作为电动汽车动力系统的能量源头,     

基于移动互联网技术的电动汽车充电助手系统设计与实现

论文分析了移动充电支撑手段的重要性,总结了当前移动充电支撑系统的发展情况,设计了基于移动互联网技术的电动汽车充电助手系统总体架构,对该系统中的关键技术和充电完整业务流程进行了研究,最终设计并实现了该系统。该充电助手系统已经成功应用于国内某电动汽车充电运营商的试点城市中,取得了良好的效果。     

尽快完善充电网络是当务之急——从用户使用感受谈电动汽车发展

正关于电动汽车,最近有两件大事:一是为配合《电动汽车充电基础设施建设指导意见》和《电动汽车充电基础设施发展指南(2015~2020年)》等产业政策的落实,国家能源局结合我国电动汽车充电设施发展对标准化提出的新需求和近年来的工程建设实践,组织能源行业电动汽车充电设施标准化技术委员会在原电动汽车充电设施标准体系框架的基础上,进一步梳理、优化和补充完善,形成了《电动汽车充电设施标准体系项目表(2015年版)》;二是     

汽车、能源、电工三大行业携手 电动汽车充电接口将有国家标准

日前,工信部公布了《电动汽车传导充电用连接装置》等三项系列推荐性国家标准(以下简称《标准》)草案,并公开向社会征求意见。电动汽车充电接口,对于充电站的建设和电动汽车的发展具有重要影响。充电接口的标准,是保证电动汽车的安全性、互换性的基础标准,在充电基础设施大规模建设和电动汽车大规模应用之前,统一充电接口标准意义重大。     

县域内电动汽车充电市场现状分析

<正>针对电动汽车充电服务，安徽省灵璧县境内目前形成了国家电网公司投资建设充电站点与民营企业投资建设充电站点并存的格局。本文以安徽省灵璧县范围内电动汽车充电服务站点建设、服务现状分析为切口，通过对比，对如何更好地提升电动汽车充电服务能力进行思考。使用电动汽车，除了关注每日回家之后电动汽车的充电问题之外，客户更关注的是在外面使用过程中如何解决充电问题。因此，建设公共电动汽车充电站点，为客户提供方便快捷的充电服务，是电动汽车保有量越来越多这个大背景下必须要高度关注、并切实解决的问题。     

动态无线充是梦吗?

充电是电动汽车使用过程中重要一环,充电的体验很大程度上决定了消费者的购买决策和用车体验。今年春节刚过,电动汽车无线充电行业就传来一件令人振奋的消息:2月13日,迪拜道路运输局(RTA)宣布,利用磁共振技术(Shaped Magticfield Responsion,SMIFIR)成功测试运行中的电动汽车和公共汽车的动态无线充电。未来,迪拜的电动巴士和电动汽车可以在路上充电。业内认为,这将重塑电动汽车无线充电技术的市场格局。     

统一电动汽车充电接口及通信协议标准——充电接口和通信协议标准解读

充电接口是电动汽车充电过程中连接电动汽车和供电设备的最重要的部件，电动汽车充电接口标准的统一对于促进电动汽车推广应用和充电基础设施的建设具有重要意义。     

行业

日美德上演电动汽车充电标准之争,中国站队很重要近日,在美国洛杉矶召开的电动汽车研讨会上,美国通用、德国大众等8家汽车厂商公布了一种名为"联合充电系统"的电动汽车充电方式新标准。该标准与日本汽车厂商当前采用的"直流快速充电"方式截然不同,标志着日系与美德系汽车企业间关于充电方式标准之争日趋激烈。     

建立智能充换电服务网络管理系统探讨

正智能充换电服务网络管理系统应实现对城区电动汽车充电设施、电动汽车电池运行状态、数据的实时采集和处理,实时监测、分析充电站运行状况、分析电池运行状态,为充电设施的安全、可靠、经济运行及管理提供保障手段;向政府、公交运营单位、社会公众发布电动汽车充电网络运行状况,为电动汽车用户提供优质、便捷的服务。     

当前我国电动汽车发展的瓶颈问题及对策

目前社会各界对发展电动汽车的意义、必要性和紧迫性已达成共识,但电动汽车发展依然存在诸多瓶颈,动力电池与配电网是当前电动汽车规模化发展的主要制约因素。基于对两大瓶颈问题的深入分析,提出“换电为主、插充为辅、集中充电、统一配送”的充电服务网络运营模式,以突破当前电动汽车发展瓶颈的制约,并提出了相关政策建议。     

Monetäre Anreize zur Steuerung der Ladelast von Elektrofahrzeugen – eine modellgestützte Optimierung

Electric mobility is supposed to contribute to climate policy targets by reducing CO₂-emissions in the transportation sector. Increasing penetration rates of electric vehicles (EV) can lead to new challenges in the electricity sector, especially with regard to local distribution networks. Thus the management of charging loads is discussed as a key issue in energy economics. Due to their long parking times, high electricity and power demand, EV seem to be predestined for load management. Monetary incentives as dynamic pricing can be suitable for that: They reflect the current supply situation, pass the information to the consumers and can thus lead to a corresponding charging behaviour. In this article we analyse this interaction between dynamic pricing and charging loads. For this reason we have developed the optimization model DS-Opt+. It models a total number of 4,000 households in two residential areas of a major city with regard to its electricity demand, its mobility behaviour and its equipment of photovoltaic systems. Four different pricing models are tested for their effects on charging behaviour and thus the total load of the residential area. The results illustrate that only fairly high penetration rates of EV lead to remarkably higher electricity demand and require some load management. The tested dynamic pricing models are suitable for influencing charging loads; load-based tariffs are best in achieving a balanced load curve. In our analysis uncontrolled charging strategies are superior regarding a balanced load curve than controlled strategies by time-varying tariffs. Our results lead to several implications relevant for the energy industry and further research.     

Entry deterrence and dynamic competition : The role of capacity reconsidered

We study a model with sequential capacity choice and entry by firms into an industry. Post-entry competition is long term and firms compete by choosing prices. The complex role played by the capacity choice of the first mover is highlighted. In contrast to the conclusions derived from static or reduced form specifications, entry may be deterred only by choosing a low capacity level and charging a very high price. The arguments are used to provide an explanation of events in the U.S. phosphorus industry.     

Contracts as Options: Some Evidence from Condominium Developments

This paper values the real estate option to purchase contract in a contingent claims framework. The model is an application of the Black and Scholes option pricing model. Observed market data on the sale of condominiums are used to test if the option is competitively priced under various assumptions regarding the expected instantaneous variance of the condominium price. Simulation results suggest that standard industry practices of charging a fixed amount for the option to purchase roughly conform to pricing behavior dictated by the option pricing model.     

Welfare analysis of the subsidies in the Chinese electric vehicle industry*

We employ a structural model and counterfactual analysis to identify the impact of subsidies on the Chinese electric vehicle (EV) sales and examine their welfare effects. Our findings suggest that subsidies are effective in promoting the diffusion of domestic EVs, but may adversely affect technological advancement. When the subsidies on domestic EVs are reduced, the welfare on domestic EV consumers and producers decreases. However, the reduction in government spending on EV subsidies outweighs this private welfare loss. Thus, the overall welfare increases. Subsidies cannot be justified from the perspective of reducing externalities because they increase rather than decrease pollution.     

电池交换式电动汽车换电站选址优化方法

为实现电动汽车快速补能,面向电池交换的充电方式,研究了城市路网上电动汽车换电站的选址问题。首先研究了电动汽车用户的路径选择,基于交通网络均衡状态和换电站选址方案的相互影响,建立站点建设成本和出行成本之和最小为目标的换电站选址优化模型。然后预测不同方案下的交通网络均衡状态,并依据预测结果评价选址方案的优劣,最后设计求解算法,利用襄阳东津新区的路网及居民出行数据进行算例分析,验证模型及算法的可靠性,求得换电站的最优选址及换电需求。研究表明,建立的电池交换式电动汽车换电站优化模型可以获得路网路段流量及换电站处的换电需求量,给出最优的选址方案及换电站建设时序;电动汽车混入率对换电站布设、交通网络均衡状态有较复杂的影响;交换站数量的增加能减少出行成本,但边际作用递减。研究结果可为城市换电站的规划提供决策参考。     

电动汽车商业化的市场主体定位浅析

近年来,电动汽车商业化发展强劲提速。在分析了我国电动汽车市场发展现状及制约因素的基础上,重点对政府、电力公司、电动汽车生产商、第三方组织及消费者等重要市场主体在推动电动汽车商业化进程中的角色定位进行了初步探讨。     

我国发展电动汽车充电基础设施若干问题分析

理清充电设施的本质、属性及其与电网的关系,对电网企业有序开展相关工作具有重要意义。充电设施建设任务的本质是满足一种新型用电需求,而网络化是充电基础设施的基本属性;充电网络对配电网具有依附性并需要与智能电网紧密结合才得以发挥最大效益,电网公司在开展充电网络建设与运营方面具有多项优势;分析了技术路线以及运营模式发展等方面的不确定性风险,提出了有关建议。     

Induktives Laden von Elektromobilen – Eine techno-ökonomische Bewertung

Conductive (wired) charging, where the user has to plug or unplug a cable, dominates the concepts discussed for electric vehicles up to now. Apart from the reduced range of the electric vehicle, frequent charging and especially short charging times make this plugging and unplugging appear impractical. In contrast, inductive (wireless) energy transfer makes it possible to charge without user intervention. This article attempts to answer questions on whether inductive energy transfer can already be used to charge electric vehicles and where this represents an economically attractive solution for users. To do so, first the charging technologies are presented and contrasted. It is also possible to compare the two charging technologies economically based on a cost analysis. It can be shown that no widespread use of the inductive technology is to be expected for the time being from an economic point of view due to its significant extra costs. Under certain conditions, however, there is a limited field of application as a niche technology in certain commercial areas, such as taxis, for example.     

锌银蓄电池智能充电机设计

介绍了一种基于单片机与专用集成PWM控制器SG3525的锌银蓄电池充电机。在分析锌银蓄电池特性基础上,采用模糊算法控制和单片机智能控制,对充电状态实时监控,并采用分段式充电方案,提高充电稳定性,克服了电压突变等带来的充电假结束或不饱和的缺点。通过在常规的BUCK充电电路中设计2只开关管轮流导通方式,使开关管工作在轮流导通状态,并通过实验进行验证,解决了驱动电路变压器驱动能力问题。