插电式混合动力汽车碰撞安全性能设计开发

在对插电式混合动力汽车的发动机、燃油箱和动力电池、电机、高压电路等关键零部件进行相关的碰撞安全性能开发时,不仅需要考虑传统燃油车的碰撞安全标准要求,同时还要考虑电动汽车动力电池安全相关的碰撞标准要求和电安全设计防护.文章首先分析了相应的碰撞试验法规,结合上汽某插电式混合动力汽车整车布置方案,针对其特殊结构重点研究其追尾...     

插电+太阳能+混动 BUICR ENVISION SUV

别克Ervision概念SUV采用了PHEV插电式混合动力系统,这套系统包括一台2.0T SIDI直喷涡轮增压发动机,一对集成在8速手自一体变速器中的电动机/发电机组及高性能锂电池。除了PHEV插电式混合动力系统外,车顶的太阳能板还可以通过采集光能转化为电能,为车载电池充电。Envision概念车的底盘由碳纤维、镁和铝材质打造,     

插电式氢燃料电池汽车研究现状及未来发展概述

作为新能源电池汽车的研究方向之一,插电式氢燃料电池汽车技术已经引起世界各国的广泛关注。随着国家政策的推动,尽管面临一系列制约条件,插电式氢燃料电池汽车仍然得到长足发展。文章主要对当前插电式氢燃料电池汽车的研究现状进行了分析,提出制约其发展的影响因素及相应建议,并对未来插电式氢燃料电池汽车的发展做出预测。     

Question & Answer

增程型电动车与插电式混合动力车都有发动机,且都能以纯电动模式驱动车辆,请问编辑老师,它们有什么区别?杭州网友:跳跳蛙目前,各汽车厂家推出的新能源汽车种类繁多,其中插电式混合动力汽车与增程型电动车的工作模式非常类似,两者都可以由储能电池单独输出能量,在纯电动模式下驱动车辆,且当储能电池电量接近设定的下限后都转由另外一种动力源继续提供     

插电式混合动力汽车用动力蓄电池探析

重点讨论4种动力储能源的优缺点及其在插电式混合动力汽车(PHEV)上的应用及前景。介绍了PHEV新能源汽车的工作方式和优点,讲述铅酸电池、镍氢电池、锂电池、超级电容储能元件的发展和在混合动力电动汽车中的使用情况,并比较它们之间的特点和适用场所。最后以PHEV电池选择实例说明在选择电池中的考虑因素,并对各种形式做比较和性能总结。     

复合储能在插电式城市客车上的匹配应用

根据插电式混合动力城市客车对储能系统较高的性能与使用寿命要求,提出基于超级电容与锂电池构成复合储能系统的解决方案。通过分析与计算,确定复合储能构型及参数,并通过测试验证其使用效果。     

混动轿车用能量/功率型锂离子动力电池系统的开发

以某款插电式混合动力轿车为研究对象,对锂离子电池系统进行研究开发。根据混动整车的能量、功率需求,通过电池结构方案确定、电池系统正负极、电解液、隔膜、粘结剂等材料分析讨论确定材料选型;本电池系统安全性能可靠,满足整车对电池系统要求。     

系统综合效率优化的插电式混合动力车辆的能量管理策略

为了提升插电式混合动力汽车(PHEV)的动力系统的真实能效,从综合能效最优的角度,研究了插电式混合动力系统能量管理策略.针对系统综合效率的时变性和耦合性,建立了系统效率评价模型,对电池储存电能的效率进行评价和动态修正,以系统综合效率最优为目标,结合粒子群优化算法,构建了能量管理策略.基于GT-Suite和Simulin...     

燃料电池汽车车载氢系统安装强度试验分析

车载氢系统作为燃料电池汽车的重要子系统之一,主要由储氢容器、压力调节器、单向阀、氢气加注口和压力释放阀等组成.当车辆运行颠簸或者发生碰撞时,车载氢系统的安装强度直接关系到整车氢安全,在国家标准中,分别对车载氢系统的技术要求和试验方法提出要求.针对80套国产车载氢系统进行安装强度试验,分析试验结果得出:Z方向相对位移最小,Y方向相对位移次之稍大,X方向相对位移最大.     

新能源车的关键部件——储能装置

新能源车发展总体将遵循节能、环保两大趋势，逐步实现对化石燃料的替代。目前，混合动力车、插电式混合动力车和纯电动车的批量生产和获得更多市场份额的主要障碍是储能装置（动力源）。所用的储能装置必须具有性能高、寿命长、安全、廉价等特点。就动力源而言，铅酸电池在混合动力车和纯电动车中的应用虽处于成熟阶段，但其功率密度和储能密度均不尽人意；镍氢电池在混合动力车应用的成熟度优于锂电池，具备产业化条件；锂电池则在纯电动车应用条件优于镍氢电池，但它尚处于发展期。     

燃料电池车高压储氢系统碰撞安全设计与分析

针对燃料电池车氢系统碰撞试验的方法,从试验和理论的手段进行氢系统结构碰撞安全性研究.通过研究和分析国内外汽车安全测试法规,确定了氢系统碰撞试验的测试方法及评价氢系统碰撞安全性的方法.最后,经实车碰撞试验验证,该系统的安全设计满足整车碰撞要求.     

基于正交试验设计的薄壁结构耐撞性优化设计

为了提高薄壁结构的耐撞性能,本文提出了一种高效的设计方法:。利用二次回归正交组合试验设计方案来选取设计点,在设计点处用有限元法代替传统试验来获取试验数据。然后通过最小二乘法建立了刚性墙最大位移、撞击力峰值和总质量的高精度响应面。综合考虑厚度的变化范围、安全性和轻量化要求,运用可行方向法对建立的响应面进行优化计算,得到了一组最优值。结果:表明本文的设计方法:具有很高的精度和计算效率,实现了提高薄壁结构耐撞性的目的:。同时也为车身复杂结构(如前纵梁、吸能盒等)的耐撞性设计提供理论依据和参考方法:。     

Hydraulic control system design for a PHEV considering motor thermal management

In this paper, a design method for a PHEV hydraulic control system was proposed considering motor thermal management. Dynamic models of the target PHEV were developed including the hydraulic system, which consists of one mechanical and one electric oil pump. The required motor cooling flow was designed based on the motor temperature, which was obtained from a one-dimensional thermal equivalent circuit model including the heat source and oil spray cooling. Combining the PHEV powertrain model, hydraulic control system model, and the motor thermal model including the cooling system, an integrated simulator was developed for the target PHEV. Using the integrated simulator, the temperatures of MG1 and MG2 were investigated for various motor cooling flow rates when the PHEV underwent a highway driving cycle. The energy consumption of the hydraulic control system was also evaluated. It was found from the simulation results that a hydraulic control system of the target PHEV could be designed that satisfied the required flow for the motor cooling, lubrication and brake control using the design procedure proposed in this study.     

Fracture properties of aluminum foam crash box

This study investigates the compression property experiment to examine impact absorption when aluminum foam is applied to crash box in order to absorb impact energy in car crash with low speed. The result of compression property experiment shows that case 6, which involves the buckling that collapses into 5-layer structure, is the best model with regard to impact absorption. This study analyzes impact characteristics according to the structure of crash box which influences such factors as damage and safety of vehicles. As the simulation result can be agreed with experimental graph, all experimental data at this study are verified. These experimental results can be applied into real field effectively. It also proposes the effective design to improve impact performance by analyzing the property of crash box through its compressive test.     

Design methodology of component design environment for PHEV

In this study, the design methodology for PHEV component design environment is proposed, which consists of power evaluation, component evaluation, component analysis and vehicle performance evaluation environments. First, PHEV simulators were developed based on the dynamic model of the target PHEV powertrain, and a PHEV control algorithm was designed based on the general power-split type PHEV using MATLAB/Simulink. Experimental results were used to validate the constructed PHEV simulators. The power evaluation environment provides the magnitude and direction of the power between components at the vehicle level at any selected time that the user wants to evaluate. The component evaluation environment is designed to evaluate the parameter behaviors of a component using the effort-flow causality relationship. The component analysis environment is designed to investigate component performance according to the variations of component parameters. The vehicle evaluation environment is designed to evaluate equivalent fuel economy at any selected time. It is expected that the design methodology of the PHEV component design environment proposed in this study can be extended to other x-EVs for evaluating and designing vehicle components.     

Evaluation of safety benefits of automatic crash information notification systems on freeways

The automatic crash information notification system (ACINS) is an effective technology to enhance the potential for saving crash victims by reducing the crash response time (CRT) of emergency medical services. Shorter CRT results in a greater potential to save the lives and to alleviate the severity of injuries for crash victims. To fully operate the ACINS, reliable assessments of the safety benefits would be needed for justifying public investment. This study proposed a methodology for quantifying the effectiveness of the ACINS and applied the methodology to the Korean freeway system. The proposed methodology consists of three steps. The first step is to develop a statistical model for predicting injury severity of crash victims using ordered logistic regression. The second step is to estimate the amount of reduced CRT by applying ACINS. The effectiveness of the ACINS, which are defined as the number of reduced fatalities and severe injuries, were evaluated with the consideration of the market penetration rate (MPR) in third step. It has been found that approximately 9.4–15.4% of fatalities can be reduced with 100% MPR when the proposed methodology is applied to 2011 freeway crash data. The outcomes of this study support decision making for public investments and for establishing relevant traffic safety policies.     

燃料电池汽车正面碰撞安全性研究

燃料电池汽车在结构上有别于传统汽车,其碰撞安全性尤应关注.文中重点对燃料电池汽车结构特点进行研究,建立燃料电池汽车正面碰撞有限元模型,运用LS-DYNA仿真确定车辆安全性能设计方案.同时根据燃料电池汽车的特点阐述了对其碰撞试验方法的思考.通过实车正面碰撞试验,验证了车辆结构改进设计的效果.     

可外接充电式混合动力电动汽车特点和设计浅析

可外接充电式混合动力电动汽车（PHEV）在节能和环保方面有着显著优势。文章介绍PHEV特点,在续驶里程的设定、控制策略、电机设计、动力电池设计等方面对PHEV设计进行分析。     

Energy management and design optimization for a series-parallel PHEV city bus

Series-parallel PHEV city buses combine the advantages of series and parallel configurations and have been used in China. However, the design and energy management of series-parallel PHEV city buses based on Chinese driving conditions still need to be investigated. In this paper, an equivalent consumption minimization strategy is provided to optimize energy management for series-parallel PHEV city buses, and the process of the equivalent consumption minimization strategy for series-parallel is presented in this paper. Compared with the validated rule-based energy control strategy, ECMS shows a fuel economy improvement of 8.2 % in the CBCD (Chinese Bus Driving Cycle). Based on the optimal energy management, a design for a generator motor in the series-parallel configuration has been processed. The fuel consumption has been shown to decrease, with an increase in generator power, because the system with the higher generator power can work at a higher efficiency in the series mode and operate the engine in the high efficiency area in the parallel mode. Besides, in terms of costof- ownership for a PHEV bus for lifetime of 8 years, although the high generator power will lead to high purchase cost for series-parallel PHEV bus, a series-parallel PHEV city bus with a generator of 100 kW maximum power will still show small advantage in cost-of-ownership, based on current motor price and natural gas price.