Reading experience of "Lane-changing racing: China's road to new energy vehicles" - 3

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Reading experience of "Lane-changing racing: China's road to new energy vehicles" - 3 [Copy link]

The following chapters go into the challenges and opportunities facing new energy vehicles as well as future development trends. The following are my reading impressions and some parts have added personal opinions.

7. The most critical factor of new energy vehicles: safety

7.1 As a means of transportation, the safety of automobile driving is of vital importance. The development of new energy vehicles has always been accompanied by one of the doubts: safety issues. Why the safety of new energy vehicles is more concerned than that of fuel vehicles is mainly because of the safety of batteries. In order to improve the endurance of new energy vehicles, it is necessary to increase the energy of the battery pack in a limited internal space. The power batteries currently used have high energy density. If the battery cell is short-circuited, the battery panel is damaged, or the battery management system fails, it is easy to cause the car to catch fire or even explode. The key solution is to rely mainly on technology improvement, quality control, and the constraints of safety standards and policies to avoid hidden dangers.

7.2 When the battery is charged at a high current, the temperature rise will be relatively large, and the battery is more likely to be damaged. Therefore, it is also necessary to add detection and protection measures in the design of battery charging piles. For example, according to the charging characteristic parameters of the battery cell, the charging current of each stage of the battery pack charging (pre-charging, constant current charging, trickle charging) is controlled and fully closed-loop detection is performed.

7.3 In addition to the battery pack and charging pile, the safety design of the new energy vehicle is also very important. Not only does the quality of the three-electric system (battery pack, motor, and electronic control) affect the safety of the vehicle, but the IPXX design (especially waterproof) and high-voltage insulation isolation design of the vehicle cannot be ignored.

8. New energy vehicles: changing lanes and overtaking

8.1 As a country with a large population, transportation is very important in life. my country's fuel vehicle industry developed relatively late, and its core technology is relatively weak, which is why domestic fuel vehicles are mainly joint venture brands. The best way to achieve technological transcendence and leadership is to change lanes and overtake. my country's early layout of new energy vehicle technology has successfully achieved this move.

8.2 新技术的发展难免会带来一些问题，新能源汽车的发展也一样，这就需要有正确的战略方向和战略定力。我国对于新能源汽车的发展方向是根据国情决定的，并且已经取得了显著的成效。

8.3 The development of new energy vehicles is mainly guided by the government and the market. At present, enterprises can develop new energy vehicles that conform to the market according to market demand, and in this process, the technology and process of core components have also been promoted. For example, the technology upgrade of batteries in the three-electric system, the improvement of motor materials and winding processes, and the iterative upgrade of power components (IGBT, SiC MOSFET) in the electronic control system.

9. Future development opportunities and directions of new energy vehicles: clean energy and intelligent networking

9.1 With the improvement of technology and the introduction of policies, new energy vehicles are also facing the development opportunities of zero carbon emissions. New energy vehicles have obvious greenhouse gas emission reduction effects, so it is necessary to continue to research and promote new process technologies and do a good job in the application of carbon capture technology in the production process.

9.2 In the past few years, the rapid development of new energy vehicles has driven the relevant industrial chain of new energy batteries. However, to maintain healthy and sustainable development, companies need to improve product quality and production capacity to cope with market supply fluctuations.

9.3 At present, various countries have introduced policies to stop the sale of fuel vehicles. Some cities in China have also taken the lead in introducing a time point for stopping the sale of fuel vehicles. Therefore, the development and popularization of new energy vehicles is an inevitable trend.

9.4 With the development of electronic technology and the improvement of the degree of electrification of new energy vehicles, the independent operation of each ECU in traditional fuel vehicles (communication through CAN, LIN, etc.) can no longer meet the complex logic control of the whole vehicle. At this time, the domain controller has gone from concept to reality. The emergence of the domain controller integrates the functions of each independent ECU according to the system functional module, simplifying the design structure and control unit. Of course, the domain controller also has higher requirements for the functions and performance of integrated circuit chips, so the development of domain controllers has also promoted the development of automotive-grade chips. The concept of Internet of Vehicles has existed for many years. The development of new energy vehicles has also brought opportunities for the development of Internet of Vehicles technology, but it is also accompanied by information security issues. However, with the development of technology, various mainstream chip manufacturers have launched high-end information security solutions.

9.5 Making cars fly is no longer just a slogan. In Suzhou, where I work, some companies have already developed flying cars and conducted preliminary verification. Therefore, new energy vehicles have a promising future.

I have read the whole book and gained a lot. The author systematically explains the development process and design architecture of fuel vehicles to new energy vehicles, and accompanies the policy standards and market conditions. It is worth reading.

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IPXX design of the whole vehicle (especially waterproof)

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