氢燃料电池汽车关键技术的研究现状

在可持续发展战略背景下,氢燃料电池汽车出现了在社会公众视野中,受到了社会公众的关注。虽然氢燃料电池汽车在保护自然环境方面起着重要作用,但是氢燃料电池汽车也存在一定的应用劣势,如燃料电池电堆的稳定性有待提升,氢燃料电池汽车的整体性能也需提高。为发挥燃料电池汽车的绿色环保价值,有必要深入研究氢燃料电池汽车关键技术,促进技术优化升级,从而更好地促进汽车产业发展,切实落实环境保护任务,共创绿色美好家园。     

我国燃料电池汽车产业加速发展的对策研究

燃料电池具有高效、清洁、低碳、绿色的特点,是汽车未来的发展方向,文章分析了我国燃料电池汽车产业的现状与丰田燃料电池汽车技术的特点,提出了多方合作提升技术、国家政策提供支持、市场推广降低制造成本等对策,对我国燃料电池汽车产业今后的发展具有指导意义。     

燃料电池汽车研究现状及发展

燃料电池汽车是一种新型、清洁以及高校的能源,已在许多国家得到了广泛的推广。文章主要简单分析了燃料电池汽车,同时讲解了对其的研究现状,最后探讨了燃料电池汽车的发展方向,望能为有关人员提供到一定的参考和帮助。     

氢燃料电池汽车发展趋势分析

氢燃料电池汽车被认为是未来的发展方向,氢能与电能将主导未来车用能源。通过对比分析国内外主流氢燃料电池汽车企业的技术现状,明确之间的差距与未来发展布局。而氢燃料电池汽车的核心技术,包括大功率电堆和高压储氢罐,我国较为落后,存在代差。如果强行发展氢燃料电池汽车,不可避免在核心技术上受制于人。     

混合动力汽车发展现状及关键技术

随着石油资源的紧缺和环境问题的日益突出,发展兼具节能和环保特色的电动汽车在汽车界受到高度重视。电动汽车主要包括纯电动汽车、混合动力汽车和燃料电池汽车三类。由于纯电动汽车和燃料电池汽车中的     

绿色汽车的研究现状与发展方向

在环境保护和能源短缺的压力下,绿色汽车在全世界得到了加速发展。本文简要地介绍了小排量汽车、混合动力汽车、电动汽车、燃料电池汽车的概念、工作原理以及国内外的发展现状,最后得出了绿色汽车的发展方向:电动汽车和燃料电池汽车将是未来汽车的发展方向。     

基于有限元法的电动轿车车身结构强度的分析

由于燃料电池汽车的特殊性,使得整车结构设计和总布置存在很多困难,而且整车质量较传统汽车大大增加.这些对燃料电池汽车的性能影响重大,尤其是超重.从燃料电池轿车轻量化研究入手,在优化软件的协助下,对车身结构强度进行分析.为燃料电池汽车的轻量化的进一步开展提出了建议.     

燃料电池电动汽车动力传动系统技术研究

燃料电池汽车是一种高效清洁的电动汽车。与传统的内燃机汽车相比,燃料电池车的动力传动系统采用电动机替代内燃机成为燃料电池汽车驱动动力源,其动力传统系统具有革命性的改变。本文介绍了燃料电池汽车动力传统技术发展概况,围绕燃料电池电动汽车动力传动拓扑架构、多源系统管理和动力系统配置与仿真优化技术等关键技术开展了详细论述。对燃料电池电动汽车动力传统设计与制造具有重要的参考价值。     

汽车巨头加速布局 燃料电池惹关注

丰田、现代、本田、奥迪等汽车巨头的燃料电池汽车商业化必将在资本市场掀起一波燃料电池热潮,投资者可重点关注产业链上游优质的燃料电池相关供应商。前一阶段新能源汽车产业链受到市场广泛关注,在二级市场上掀起了一波又一波炒作。值得注意的是,奥迪或将在2016年1月举办的2016年底特律车展上推出一款氢燃料电池SUV概念车,丰田、现代此前均表示将于2015年商业化燃料电池汽车。     

燃料电池汽车整车纵向质心位置对车辆稳定性的影响

根据某燃料电池汽车的整车质心参数和对应传统车的质心参数,研究纵向质心位置改变对车辆稳定性影响的作用途径,仿真分析纵向质心位置的改变对燃料电池汽车稳定性的影响,并从整车总布置角度提出消除质心后移带来的车辆稳定性下降的方法,为燃料电池汽车整车总布置设计提供了技术参考.     

Study on operating characteristics of fuel cell powered electric vehicle with different air feeding systems

In this paper the modeling of a fuel cell powered electric vehicle is presented. The fuel cell system consisting of a proton exchange membrane (PEM) fuel cell stack and balance of plant (BOP) was co-simulated with a commercial vehicle simulation program. The simulation program calculates the load of the fuel cell depending on the driving mode of the vehicle and also calculates the overall efficiency and each parasitic loss by applying the load in the fuel cell model that is used to estimate the performance of the entire vehicle system by calculating the acceleration performances and fuel economy of the vehicle. Two types of air feeding systems (blower type and compressor type) were modeled by using MATLAB/Simulink environment and the effect of fuel cell stack size (number of cells, cell area) on the fuel economy and performance of the fuel cell powered vehicle was investigated. Using a driving cycle of FTP-75, the required power, BOP component power loss, and system efficiency for two types of fuel cell systems were analyzed. Through this study, we could get a basic insight into the fuel cell powered electric vehicle and its characteristics.     

燃料电池汽车动力系统功率平衡控制策略

燃料电池汽车动力总成控制的主要目的是平衡各个动力总成部件如燃料电池发动机、动力蓄电池和电动机之间的功率流向和能量平衡,使车辆保持较好的动力性和经济性。依据燃料电池汽车动力系统基本拓扑结构,提出了基于DC/DC变换器电流控制方式和基于模糊决策的蓄电池恒荷电状态控制的动力系统功率平衡控制算法,在MATLAB环境中进行了离线仿真,并用快速控制原型方法进行了实车试验验证。     

Intelligent vehicle electrical power supply system with central coordinated protection

The current research of vehicle electrical power supply system mainly focuses on electric vehicles (EV) and hybrid electric vehicles (HEV). The vehicle electrical power supply system used in traditional fuel vehicles is rather simple and imperfect;electrical/electronic devices (EEDs) applied in vehicles are usually directly connected with the vehicle’s battery. With increasing numbers of EEDs being applied in traditional fuel vehicles, vehicle electrical power supply systems should be optimized and improved so that they can work more safely and more effectively. In this paper, a new vehicle electrical power supply system for traditional fuel vehicles, which accounts for all electrical/electronic devices and complex work conditions, is proposed based on a smart electrical/electronic device (SEED) system. Working as an independent intelligent electrical power supply network, the proposed system is isolated from the electrical control module and communication network, and access to the vehicle system is made through a bus interface. This results in a clean controller power supply with no electromagnetic interference. A new practical battery state of charge (SoC) estimation method is also proposed to achieve more accurate SoC estimation for lead-acid batteries in traditional fuel vehicles so that the intelligent power system can monitor the status of the battery for an over-current state in each power channel. Optimized protection methods are also used to ensure power supply safety. Experiments and tests on a traditional fuel vehicle are performed, and the results reveal that the battery SoC is calculated quickly and sufficiently accurately for battery over-discharge protection. Over-current protection is achieved, and the entire vehicle’s power utilization is optimized. For traditional fuel vehicles, the proposed vehicle electrical power supply system is comprehensive and has a unified system architecture, enhancing system reliability and security.     

飞行器上设备软件在线升级方案设计与应用

为解决飞行器上各个设备软件升级困难问题,以飞行器上已有的通信接口为基础,设计了一套成本低、通用性好、可靠性高的飞行器上设备软件在线升级方案。试验结果表明,该方案简单可靠,可用于飞行器嵌入式设备软件的在线升级与维护,具有较好的应用前景。     

基于油耗及噪声目标的轻型商用车匹配优化研究

介绍了基于油耗噪声目标的轻型商用车在整车成本控制的前提下,对车辆发动机与传动系统匹配优化获得汽车综合性能的一种方法。以某款轻型商用车为例,对车型试验过程中出现的油耗及噪声超出预定目标值的问题开展分析,借助AVL Cruise软件进行动力性及经济性仿真计算,在油耗及噪声目标约束下优化传动系匹配。通过不同方案的样车测试,验证了方案的可行性及油耗、噪声的改善效果,使整车综合性能更加合理。     

Optimal operation strategy development for fuel cell hybrid vehicle

An overall simulation model for fuel cell hybrid vehicle (FCHV) power train in parallel configuration using MATLAB/Simulink programming is constructed in this study. The model runs on power control strategy by using logic-threshold approach, achieved by the hybrid control unit (HCU) and fuel cell stack number. Using accelerator and decelerator pedal positions deduced from the driving schedule as the primary input, the simulation implements power flow and distribution under different vehicle operating modes. The HCU control strategy also incorporates regenerative braking and recharge for battery capacity recovery. Using the D-optimality method for experiment points selection and sequential quadratic programming (SQP) algorithm for obtaining the optimal operational parameters, three control threshold variables of HCU and optimal stack cell number are selected for hydrogen fuel economy under certain driving cycles. The proposed method provides optimized configurations of the FCHV model and the fuel cell stack, which has the capability in satisfying drive power request while satisfying vehicle driving schedule and battery state of charge (SOC) recovery with lower fuel consumption.     

氢燃料电池客车动力传动系统参数匹配研究

基于传动系部件参数直接影响车辆性能的事实,以车辆项目开发参数为目标,对某款氢燃料电池客车的动力传动系统进行了参数匹配研究;综合CRUISE与MATLAB软件的优点,通过软件交付的方法建立了该车型动力传动系统仿真模型,对整车进行在线仿真分析及试验验证。仿真结果表明:氢燃料电池客车最高车速、加速度、峰值扭矩等参数满足氢燃料电池客车所需的目标动力性能,客车动力传动系统的经济性能在满足要求的前提下并保留一定的裕量;氢燃料电池堆工作点发电策略有效,动力传动系统参数匹配合理,验证了氢燃料电池客车零部件参数选型的匹配策略。     

燃料电池轿车整车碰撞氢安全评价方法

随着新能源汽车的不断推广,燃料电池轿车的相关技术也得到了深入研究和长足的发展。相对于传统的内燃机轿车来说,燃料电池轿车因为将氢气作为动力源,在发生碰撞时就要考虑如何来确保整车的氢安全。现基于某款燃料电池轿车的整车碰撞氢安全设计思路,采用有限元碰撞模拟分析方法,探讨了燃料电池轿车的碰撞氢安全评价方法。     

基于PTR2000的汽车油耗实时监测系统的无线通信设计

PTR2000 是一种小型、高速率、超低功耗的无线收发数据传输调制解调器.本文分析并设计了一种基于PTR2000的汽车油耗实时监测系统的无线通信模块的硬件电路、通信机制和程序流程.该系统主要用于企业管理人员对汽车油量实时消耗的分析,评估和管理.     

燃料电池电动汽车能量流控制系统设计与模型实验

根据燃料电池的特点,设计了燃料电池电动汽车能量管理系统．介绍了其运行原理。为满足汽车正常运行和提高运行效率的两大目标．拟定了燃料电池(主动力)和蓄电池(辅助动力)2种能量源之间的优化调配方案。讨论了车辆在行驶过程中的能量流控制算法。在所建立的模拟实验平台上对控制策略及算法进行了实验分析,验证了所提出控制策略和算法的正确性和可行性。