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下面为大家整理一篇优秀的paper代写范文- Charging safety of electric vehicles，供大家参考学习，这篇论文讨论了电动汽车的充电安全。如今为了减少环境污染，世界各国都在大力发展电动汽车。时至今日，电动汽车依旧存在着许多技术问题需要进行解决，尤其是电动汽车的充电安全问题。要想解决这个问题，就必须要根据安全等级，设立三道安全防线，进一步优化电动汽车的绝缘性能，并且采用保护装置。

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As our country attaches more importance to the use of new energy, new energy has the characteristics of safety, environmental protection and high utilization rate, which can effectively reduce the pollution of energy consumption to the environment. Nowadays, there are more and more cars in our country's transportation system, and the environmental pollution is more serious. In order to reduce the pollution of automobiles to the environment effectively, the electric vehicle has become a key research topic in our country through the innovation and research of new energy. However, in the research of electric vehicles, there are still many technical problems need to be solved, especially the safety of electric vehicle charging, it is the most important item of electric vehicle research. Based on the classification of charging safety of electric vehicle, this paper points out the influencing factors of electric vehicle charging safety, and puts forward some corresponding solutions according to these factors, hoping to provide new solution ideas for the research problem of electric vehicle charging safety, and provide some corresponding reference function.

In recent years, our country has paid more and more attention to the ecological environment Protection, promulgated a series of policies on new energy, electric vehicles have come into being, because of their advantages of pollution-free and high utilization rate, electric vehicles have also been favored by the country. Compared with traditional automobiles, electric vehicles are based on electric energy and have no pollution to the environment. It can be said that the emergence of electric vehicles on China's traffic pollution control, has played a revolutionary change. However, the safety of electric vehicle charging should be studied more, to avoid the use of electric vehicles in the future construction of safety problems. Based on the analysis of charging safety level of EV, the author sums up the influencing factors of charging safety of electric vehicle and puts forward the corresponding solutions.

http://www.51due.com/writing/research-paper/sample67938.html​

Before proposing the corresponding solution to the charging safety of electric vehicle, the safety grade of electric vehicle should be analyzed, the safety grade of electric vehicle should be determined, according to the charging safety grade, the corresponding measures should be taken to establish the line of defense to fundamentally solve the problem of charging safety. As we all know, the security level is divided into three levels, according to its consequences, its rating is different, the first level of security is the consequences of human security. The second stage is the consequences for the surrounding facilities of electric vehicles, and the third is the consequences of charging equipment for electric vehicles. According to these three points, it is necessary to establish the corresponding line of defense, to protect the different objects, so as to avoid the occurrence of security risks.

In the charging process of electric vehicle, the insulation factor is one of the important factors to produce safety hidden trouble, good insulation, can play a good protective role to people and electrical equipment. The first is the insulation of the shell protection in the charging equipment, the insulation of the casing protection directly affects the charging safety, but also the connection state of the connector should take corresponding protective measures. The second is to consider the electric vehicle in the charging process of electrical clearance and creepage distance, to ensure that the voltage will not be too large and breakdown insulation. The dielectric strength of insulators should also be synthetically considered to ensure that the dielectric strength meets the requirements. Again is the resistance of insulation, due to the different environment, insulation resistance of the greater resistance, the more can ensure the safety of charging. Contact current size, directly to the human body will have different damage, so in the design must take appropriate protective measures to prevent contact current. Finally, impact voltage is also one of the insulation factors that affect the safety of charging.

The charging safety of electric vehicles also needs to take into account the influence of environmental factors, establish three mechanism, and prevent environmental factors from long-term influence on some metal elements and insulation by protecting measures against rust, windproof and anti-theft.

Protection measures need to be monitored first, monitoring the insulation and equipment failure of electric vehicles, protection measures can prevent in the event of failure, damage to the human body. In the charging process, but also to the protection of the charging equipment to consider, to prevent the edge of material damage or aging, in the charging process to the human body damage.

DC fast charging and slow charging is a difference, fast charge of the output voltage reached thousands of volts, such a large voltage if not to take effective measures to protect, will have a very serious security risks. The communication protocol has important influence on the fast charging of electric vehicle, and also is one of the important influencing factors of electric vehicle charging safety.

Through the above mentioned security level analysis, we can see that the charging safety problem of electric vehicle needs to start from the protection of these three security levels, according to the security level divided into three levels, it will need to establish three security lines to protect. First, the protection of people, take measures to strengthen the safety of the charging pile, to ensure that the safety of the electric vehicle itself is a human protection. The next is the establishment of protective measures for surrounding facilities. Finally, the establishment of the safety protection measures for the charging facility itself. According to the priority level and importance of the three safety lines, the corresponding safety precautions are taken.

According to the above-mentioned insulation problems in each of the factors to establish protective measures, including the protection of the shell insulation performance to improve, for electric vehicles and charging facilities to adopt more insulating materials, improve the service life of insulating materials, establish insulation monitoring and evaluation system, and test the security of the communication protocol, optimize the insulation performance of the electric vehicle itself and the insulating parts of the charging pile and charging facility.

Because electric vehicles are used for a period of time, the ambient factors will erode the insulation of electric vehicles for a long period, electric vehicle components will continue to produce rust phenomenon, a long time, electric vehicles will inevitably fail, and the role of protective devices is to prevent the failure of electric vehicles, during the charging process due to insulation material damage caused by safety hazards, to avoid direct contact with electricity. The use of protective devices will also further enhance the overall safety of electric vehicles.

Based on the analysis of the safety grade of electric vehicle, this paper comprehensively considers the protection objects of these three safety classes, determines three safety lines, and finds out the related factors that affect the safety of electric vehicle charging, to minimize the impact of these factors on the safety of electric vehicle charging, and put forward the corresponding solutions, through the establishment of three lines of security, strengthen the insulation performance of electric vehicles, installation of protection devices and other optimization measures to better avoid the electric vehicle charging process in the security hidden trouble.

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