电动汽车传导式充电接口关键技术研究

发布时间：2018-04-15 21:28

本文选题：充电接口 + 接触对　；参考：《电子科技大学》2014年硕士论文

【摘要】：电动汽车行业随着国家的推动,这个新兴的行业已经进入了蓬勃发展的春天,也带动了相关配套产业的发展,其中在电池、充电桩等技术上已经有了很大的进展和突破,迫切需要充电接口技术能适应电动汽车行业发展的速度和方向。一直以来国内电动汽车充电接口一直以来发展缓慢,市场上充电接口种类繁多、接口不统一、质量不稳定,非常不利于推动整个电动汽车行业的发展。国际上欧洲各国和日本在电动汽车充电接口的发展比我们国内要早,但是近年来也没有在技术上进行突破。其中欧洲执行国际电工委员会(IEC)标准,美国执行美国汽车工程师协会(SAE)标准,日本执行日本电动汽车协会(JEVS)标准;国内接口执行2011年发布实施的GB/T20234-2011《电动汽车传导充电用连接装置》标准。GB/T20234标准是根据国内具体情况依据、及的相关标准制定的,能达到和国际和国内的充电接口有统一的互换标准。为了满足市场的需求和适应发展的需要,开展电动汽车充电接口的关键技术研究和突破势在必行。目前国际及国内的标准体系中均规定充电接口的机械寿命为空载10000次,接触电阻0.5mΩ、温升不超过50K。根据充电接口的使用频率测算预计使用寿命在5年以下,但是汽车的使用时间却是这个的两倍甚至以上。为了提高汽车的安全性能和核心部件的使用期限,本课题以电动汽车传导式充电接口为研究对象,对充电接口的关键技术进行研究,将充电接口的机械寿命提高到20000次,使用寿命提高到10年左右,达到汽车的使用寿命并减少了报废接口造成的环境污染及资源浪费;将接触电阻降到0.3mΩ以内、温升下降到30K左右,可以使充电接口更安全并适应更高环境温度使用的需要。充电接口的接触电阻、温升、机械寿命这几项关键技术主要体现在接触对上。本课题针对接触对进行系统的、深入的研究和分析,包括接触件的结构分析、电及热应力传导分析、材料分析、表面工程技术、摩擦及磨损、主要失效模式分析、可靠性分析等工作,研究的同时提出独创的的双曲面笼式插孔,该插孔结合了常用接触件的优点,并进行了结构创新。从双曲面笼式插孔结构、接触电阻、插拔力、温升、机械寿命等方面进行了深入研究和仿真计算,然后投入试制生产,最后将样件进行一系列的试验测试,与理论值及要求值进行对比分析。从理论和实践都证明本次研究达到了预期的目标。通过本次研究,将双曲面笼式插孔应用在充电接口上,在标准化的基础上,提高了充电接口的安全性能,将机械寿命提高了两倍,适应了充电接口的发展方向,推动了国内充电接口的发展,使此类充电接口达到行业领先水平。
[Abstract]:With the promotion of the country, this emerging industry has entered the spring of vigorous development, and has also led to the development of related supporting industries. Among them, there has been great progress and breakthrough in technology such as batteries, charging piles, etc.There is an urgent need for charging interface technology to adapt to the speed and direction of the development of the electric vehicle industry.The domestic electric vehicle charging interface has been developing slowly all the time. There are many kinds of charging interfaces in the market, the interface is not uniform and the quality is unstable, which is very unfavorable to the development of the whole electric vehicle industry.The development of electric vehicle charging interface in Europe and Japan is earlier than that in our country, but in recent years there has been no technical breakthrough.Among them, Europe implements the IEC standard, the United States implements the American Association of Automotive Engineers (SAE) standard, and Japan implements the JEVS standard of Japan Electric vehicle Association.The domestic interface implements the GB/T20234-2011 standard. GB / T20234, issued in 2011, is based on the specific situation in China and related standards.Can meet the international and domestic charging interface has a unified exchange standard.In order to meet the needs of market and development, it is imperative to research and break through the key technology of electric vehicle charging interface.At present, it is stipulated in international and domestic standard systems that the mechanical life of charging interface is 10000 times without load, contact resistance is 0.5 m 惟, temperature rise is not more than 50 K.The estimated service life is less than five years based on the frequency of the charging interface, but the car is twice as long as this one.In order to improve the safety performance of the vehicle and the service life of the core components, this paper takes the conductive charging interface of the electric vehicle as the research object, studies the key technology of the charging interface, and increases the mechanical life of the charging interface to 20000 times.When the service life is increased to about 10 years, the service life of the automobile is reached and the environmental pollution and resource waste caused by the scrap interface are reduced, the contact resistance is reduced to less than 0.3 m 惟, and the temperature rise is reduced to about 30 K.It can make the charging interface safer and adapt to the need of higher ambient temperature.The contact resistance, temperature rise and mechanical life of the charging interface are mainly reflected in the contact pair.This subject is a systematic and in-depth study and analysis of contact pairs, including contact structure analysis, electrical and thermal stress conduction analysis, material analysis, surface engineering technology, friction and wear, main failure mode analysis,At the same time, the original hyperboloid cage Jack is put forward, which combines the advantages of common contacts, and the structure is innovated.The hyperboloid cage hole structure, contact resistance, insertion force, temperature rise, mechanical life and so on are studied and simulated, then put into trial production, and a series of tests are carried out.Compared with the theoretical value and the required value.Both theory and practice have proved that this study has achieved the expected goal.Through this study, the hyperboloid cage Jack is applied to the charging interface. On the basis of standardization, the safety performance of the charging interface is improved, the mechanical life is increased twice, and the development direction of the charging interface is adapted.Promote the development of domestic charging interface, so that this kind of charging interface to the industry leading level.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491.8;U469.72

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