This paper analyzes the control strategies of dynamic system operation mode of hybrid electric vehicle. Based on factors such as vehicle torque demand, battery SOC, accelerator pedal and brake pedal, the switching conditions, control methods and assembly states between different modes are analyzed. The operation modes of the vehicle include pure electric start mode, 4WD start mode, engine start mode, idle charge mode, series drive mode, drive charge mode, parallel drive mode and energy recovery mode. The analysis of control strategies for these operation modes can be used to provide references for relevant engineering developers.

Lithium-ion batteries with silicon-based anodes are considered to be the most promising next-generation Lithium-ion batteries due to their high theoretical specific capacity and low operating voltage. However, the inherent huge volume expansion of silicon-based materials after lithiation and the resulting problems seriously restrict the practical application of silicon-based anodes. From different functional types of polymer binders, the latest research progress of binders for silicon-based anodes is summarized. Finally, a method for rationally designing binders for silicon-based anodes and suggestions for industrial production are proposed.

With the improvement of electric vehicle technologies, integrated design has gradually become the direction of development. This paper mainly elaborates the structural integrated design of the electric vehicle system: six-in-one integrated design of PDU, OBC, DC/DC, BDU, BMS and battery, two-in-one integrated design of AC charging cradle and DC charging cradle, and integrated design of high voltage harness connected to compressor and high voltage harness connected to PTC. Compared with the distributed design, it can make full use of the vehicle space, short harness length and reduce the number of components, and then reduce the weight and cost.

Hydrogen fuel cell vehicles have the characteristics of green environmental protection, long driving range, short hydrogenation time. For a long time, hydrogen safety is an important guarantee for the promotion of hydrogen fuel cell commercial vehicles, and it is also the most concerned issue of users. From the literature and standards specification research as well as the experience of real vehicle development, assembly and service, the hydrogen safety measures in the main links of fuel cell commercial vehicle design, loading, service and monitoring are summarized, so as to provide reference and methods for hydrogen safety of hydrogen fuel cell commercial vehicles.

At present, Intelligent and Connected Vehicle (ICV) has become the strategic direction of the development of China’s automobile industry. The development of ICVs can provide new momentum and the best carrier for the innovation and development of Artificial Intelligence (AI). At the same time, AI innovation and development can also drive the development of ICV industry. Through deep excavation, analysis of AI and ICV technology literatures, based on AI driven ICV development status, from the AI innovation driven ICV industry development path, this paper proposes to build 4 system platforms for ICVs based on AI and vigorously erect development paths for CPU of ICVs and key components for ICVs. Aim of the research is to promote the development of ICV industry well, so as to effectively solve the issues of traffic accidents, urban road congestion, fossil energy consumption and air pollution faced by human society, and realize the transformation and upgrading of the automobile industry and the establish a new ecology of ICV industry.

The European Union issued COMMISSION REGULATION (EU) 2018/1832, which requires vehicles to be equipped with devices, i.e. On-Board Fuel and/or Energy Consumption Monitoring （OBFCM）devices, which can measure fuel consumption in real time, requires the accuracy of the collected data and requires that the fuel consumption data stream should meet the current vehicle-machine communication standards. In this paper, the feasibility of vehicle terminal coverage of OBFCM is studied by comparing and analyzing the OBFCM device and the policy, function and technology of vehicle fuel consumption monitoring in real time. The results show that the vehicle terminal coverage OBFCM device can be applied in all aspects above, and has great development prospects. China should carry out the collection of driving data for fuel consum-ption as soon as possible and establish relevant industry standards.

With the vigorous development of the automobile industry, the environmental pollution problem of internal combustion engine vehicles has become prominent day by day, especially the front-rear drive vehicles with large displacement engines. Influenced by increasingly stringent fuel consumption and emission regulations, influential automobile enterprisesat home and abroad have turned to the hybrid technology for front-reardrive vehicles. Through the investigation and research on the existing energy-saving technologies of hybrid electric vehicles, this paper summarized the typical front-rear drive hybrid electric vehicles and technological solutions, analyzed the powertrain architecture principle, key assembly parameters, advantages and disadvantages of hybrid technologies as well as the future development trends and challenges.Promoting technological level and development are major trends for front-rear drive hybrid electric vehicles.

Intelligence, networking and electrification have become the strategic direction for the development of the global automotive industry. In order to adapt to the new three transformation of the automobile industry，and solve the new problems arising from battery safety, hardware safety, software safety, data safety, and modification safety during the service of intelligent electric vehicles. This paper analyzes and identifies the risks in 5 fields of intelligent electric vehicles, as battery, hardware, software, data, and modification through literature research, expert interviews, enterprise research and other methods. Based on risk analysis, 5 aspects for health management suggestions are proposed, which is government management, standards formulation, technology and equipment development, personnel training, and inspection organization upgrading.

As an important part of automated driving vehicles, trajectory planning is the key to affecting the level of unmanned intelligence. The trajectory planning methods of automated driving vehicles in the past 10 years are summarized and classified into 5 categories: graph search, sampling, mathematical optimization, curve interpolation and machine learning. Each kind of algorithm is described in detail, the application of the algorithm in the actual scene is elaborated and its advantages and disadvantages are analyzed. Finally, the existing problems and challenges are pointed out, and the future research directions are briefly analyzed.

Technologies of Hybrid Electric Vehicle (HEV) are key part of technologies for automotives to realize fuel saving targets for 2025 and 2030, therefore it is essential to comb the technologies and obtain deep insight in HEV.Based on the study of the whole life cycle carbon emission management, the direction of energy-saving vehicle hybrid technology is proposed. Combined with the latest research results of the industry, this paper aims to sum up the vehicle fuel consumption reduction target and realization technology path. In the process of vehicle fuel saving analysis, through the establishment of P2.5 single-motor hybrid, series dual-motor hybrid, single-gear hybrid dual-motor hybrid and planetary hybrid dual-motor hybrid mainstream application scheme hybrid model, the fuel saving effect of each special hybrid transmission scheme is obtained. According to the actual hybrid special engine models with different thermal efficiency, the relationship equation between engine thermal efficiency and vehicle fuel consumption is established, and then the energy-saving vehicle technology scheme meeting 2025 and 2030 is obtained so as to provide a reference for the selection of vehicle technology scheme.