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蚊防四宝

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我们在开电动 汽车 时最担心的就是目的地没有到电没了,目前讨论电动 汽车 是否能够完全代替燃油车一般都有两大关注点,一是充电桩够不够,二是续航里程够不够,开电动 汽车 最焦虑的就是我看一下还有多少续航里程。 本文就不同的环境温度到底影响多少续航里程进行讲解和说明。 在戴天禄、隋航等编写的《不同环境温度下纯电动 汽车 续航里程测评方法研究》论文中这样描述环境温度会影响电动 汽车 续航里程,锂电池在0 时容量保持率在60%-70%,锂电池在-10 时容量保持率在40%-55%,锂电池在-20 时容量保持率在20%-40%。从这可以看出不同的温度对对电池的容量保持率有很大的影响,所以当电动车所处的温度越低,续航里程就会越小。我们在冬天或者夏天开车时一定会选择开空调,那么开空调加上温度到底对续航里程有多大影响呢,上篇论文中验证了常温23 、高温35 (开制冷)和低温零下7 (开采暖)三个温度下对续航里程的影响。在讲解试验结果之前说明一下关于电动车的两个解释,微型车(车身长度 4m,最高速度 100km/h,电池电量在在20 kW·h左右);常规车(车身长度 4m,最高速度 120km/h,电池电量在在40-50kW·h左右)。试验结果表明微型车在高温环境下(35 )续航里程比常温降低了14%-31%左右,在低温环境下(零下7 )续航里程比常温下降了31%-53%左右;常规车在高温环境下(35 )续航里程比常温降低了8%-31%左右,在低温环境下(零下7 )续航里程比常温下降了14%-62%左右。这里需要说明一下,以上试验结果的电动 汽车 都是采用PTC进行制热,如果你的电动车配置的是热泵空调,低温的续航里程会下降的少一些。 为了说明上述数据的准确性再次分享重庆理工大学学报(自然科学)期刊中解难、胡月昆等编写的《环境温度对电动 汽车 续驶里程影响的试验研究》论文中这样说明微型车的高温工况下续驶里程比常温下降率为 16% -31% ;低温工况下电动 汽车 续航里程比常温工况下续航里程下降率为16%-31%;常规车的高低温续驶里程下降率在整体上低于微型车,高温续驶里程比常温下降率为 8% -19% ,低温下续航里程比常温下降率为20% - 45% 。这一方面在于随着车辆价值的升高,车辆的空调性能和车辆的密封性能的提升带来了能耗的降低,另一方面,普通电动车的续驶里程一般高于微型车,在计算上也会导致续驶里程下降率的降低。 从上面的两篇论文可以看出,不同人员所做的试验结论有一定的差异,这是正常现象,毕竟所选车辆不同,测试人员不同都会有偏差。但是整体数据来看还是比较合理的。 那么问题来了带有热泵空调系统的电动 汽车 在冬天比只有PTC加热的电动 汽车 续航里程到底能增加多少呢? 冬天使用PTC加热采暖,PTC的电加热效率 1,热泵空调的电加热效率 1,所以使用热泵系统的电动 汽车 的续航里程一定会比同等情况下PTC加热的系统续航里程要多。到底能增加多少呢?在制冷学报期刊中张子琦、李万勇等编写的《电动 汽车 冬季负荷特性研究》论文中这样讲述使用热泵将明显增加电动车的续航里程。增加的效果将随热泵 COP 的上升而增加,当COP为1. 7 时,上升范围为7. 4% -13. 2%。这里再给大家说明一下,电动 汽车 显示的续航里程与环境的温度并不是100%准确,这个怎么理解呢,就是说电动 汽车 显示的续航里程在常温下是最精确的,在高温环境下实际续航里程会比表现续航里程要小,而低温下实际续航里程会比表现续航里程更低。在科学技术与工程期刊中孙志诚、周博雅等编写的《电动 汽车 续航里程估计准确度评价》论文中这样说明大部分车型无论采用确定系数、欧式距离还是平均误差在不同温度环境中的续航里程估计准确度顺序均为常温 高温 低温。所以这也是电动车在低温环境下续航里程下降的比较厉害的一个潜在因素。根据以上内容总结一下: 电动 汽车 在常温下续航里程比较精确,微型车的高温续驶里程比常温下降率为 16% -31% ; 低温续驶里程比常温下降率为 31% -53% ; 常规车的高温续驶里程比常温下降率为 8% -19% ,低温续航里程比常温下降率为20% - 45% 。 热泵将明显增加冬天电动车的续航里程。增加的效果将随热泵 COP 的上升而增加,当COP为1. 7 时,比单一PTC加热方式的电动车续航里程上升范围为7. 4% -13. 2%。 大部分车型无论采用确定系数、欧式距离还是平均误差在不同温度环境中的续航里程估计准确度顺序均为常温 高温 低温。 参考文献 [1] 戴天禄、隋航等.不同环境温度下纯电动 汽车 续航里程测评方法研究 [2] 解 难、胡月昆等.环境温度对电动 汽车 续驶里程影响的试验研究 [3] 张子琦、李万勇等.电动 汽车 冬季负荷特性研究 [4] 孙志诚、周博雅等.电动 汽车 续航里程估计准确度评价

346 评论

joanna0727

英文论文写作参考文献

参考文献是文章或著作等写作过程中参考过的文献,文后参考文献是指为撰写或编辑论文和著作而引用的有关文献信息资源。

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139 评论

兴业腾达装饰

CAN bus in the electric vehicle monitoring system of Abstract Now, CAN, high-performance and reliability has been recognized and was widely used in industrial automation, marine, medical equipment, industrial equipment, and so on. Field Bus is the development of automation technology One of the focuses of the area known as automated computer LAN. It is a distributed control system to achieve real-time between the nodes, reliable data communications providing strong technical support. CAN bus belonging to the scene of the areas, it is an effective support for real-time control of distributed control or serial communication network. Compared with many of the current RS-485 based on the R line Construction of the Distributed Control System, based on the CAN bus distributed control system has obvious advantages. In this paper, occupies a lot of relevant information based on the comprehensive use of various methods of the CAN bus in the electric vehicle monitoring system in the application of theory and an analysis of development issues, and some of the problems raised his own views. The full text is divided into four parts: The first part of the main topics on the background and content of the subjects studied in the context of topics to write on the CAN bus status and significance in the research described in the content of the object of measurement requirements and complete the task of this paper. The second part, write data acquisition module design, from the SJA1000 CAN-based communications port design, acquisition, the electric car design; electric car design capacity of the collection node consists of three parts. The third part, mainly to write the electric vehicle monitoring network design, the first Fieldbus awakened comparison and choice, selected after the introduction of the CAN bus, the last of the SJA1000 CAN bus controller is introduced. The fourth part is really on the reliability of the system design for discussion, data from the calibration, the anti-jamming software and hardware design of the anti-jamming design in three areas to address the reliability of the system problems. Key words :Fieldbus; CAN bus; SJA1000; nodes;

118 评论

tarrinbiubiubiu

可以上汽修网站上找找,查查资料,参考,最好是自己写。

105 评论

star小朋友

这个还真是要建议自己写,整个搜索资料的过程会让自己成长很多

92 评论

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