igital twinning technology originated in the field of aerospace. The real-time and bidirec-tional feature of data interaction guarantees its advantages of high accuracy, real-time performance and scalability. In this paper the digital twin technology was introduced to electric vehicle energy consumption research. First, an energy consumption model of an electric vehicle of BAIC BJEV was established, then the model was optimized and verified through the energy consumption data of the drum test. Based on the data of the vehicle real-time monitoring platform, a digital twin model was built, and it was trained and updated by daily new data. Eventually it can be used to predict and verify the data of vehicle. In this way the prediction of energy consumption of vehicles can be achieved.

In this paper, the maintenance training manual of EV vehicle was produced by utilizing digital twin technology and various sensors such as IR-based light house tracking and head tracker. In addition, through digital twin technology and VR to provide high immersiveness to users, sensory content creation technology was secured through animation and effect realization suitable for EV vehicle maintenance situation.

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EV vehicle maintenance training manual is 3D engine programming and real-time creation of 3D objects and minimization of screen obstacles and selection of specific menus in virtual space in the form of training simulation. In addition, automatic output from the Head Mount Display (HUD), EV vehicle maintenance and inspection, etc., user can easily operate content was produced.

This technology development can enhance immersion to users through implementation of detailed scenarios for maintenance / inspection of EV vehicles" and 3D parts display by procedure, realization of animations and effects for maintenance situations.

Through this study, familiarity with improving the quality of education and safety accidents and correct maintenance process and the experienced person was very helpful in learning how to use equipment naturally and how to maintain EV vehicles.

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This article proposes a Digital Twin (DT) framework for the whole life cycle of batteries. Specifically, in the stage of R&D, Digital twin can integrate the data of all technical fields into one model to optimize the battery's performance. During the manufacturing and production phase, DT can establish a digital production line and workshop to improve it. In the operation stage, aiming at various fault features in the battery operation process, with the assistance of large data samples, digital twin simulation is used to determine the fault status of the equipment accurately, to realize the self-perception, judgment, error cor-rection, early warning and other functions of the equipment. The article also proposes a Postoperation phase to recycle the battery to resolve the battery materials shortage problem. The critical research direction is a futuristic plan of battery communication with a charging Station, Battery Swapping System, Smart Grid, and Renewable resources. This sophisticated DT can comprehen-sively improve the energy system's entire life cycle management. Moreover, it can help perceive customer demand and offer an efficient operation mode to reduce running costs.

随着电动汽车与充电基础设施的普及，有必要支持电动汽车与电网协同发展，通过电动汽车有序充电与双向充放电，实现电力平衡、削峰填谷与辅助可再生能源的消纳。

然而，中国实现电动汽车与电网协同的主要技术阻碍之一是缺乏支持车-桩-网互联的开放、标准化的通信协议体系。通过国内外车-桩-网通信协议的对比，本研究发现，国内目前车-桩间、桩-运营服务商间、电网-分布式资源间通信协议的标准化程度、车网协同支持度、信息传输丰富度及网络安全性均有待提升。

中国在电动车市场碾压美国的分析

Why China Is Beating The U.S. In Electric Vehicles

美国CNBC近期做了一个专题，探讨中国电动车碾压美国的原因。通过多方采访，总结了几条重要原因：一是中国政府的支持，而美国政府迟迟不行动；二是中国消费者对此接受度逐渐增加，当然这跟政府对牌照等的支持有关；三是中国企业家群体的创新精神。

McKinsey Center for Future Mobility®

The road ahead

for e-mobility

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How OEMs can win consumers and achieve

mass-market EV adoption

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“ID –RampingupProduction”

Thomas UlbrichHead ofE-Mobility

Board Member Volkswagen Brand

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Frankfurt, 9 September 2019

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动力电池海外专题二之松下：全球动力龙头寻求突破

2019年11月5日

东吴证券 曾朵红