Bitauto original In the era of fuel vehicles, the engine is the heart of the car. The long-circulated saying "The key to a good Dongfeng Nissan car is a good engine" has become a distinctive label of Dongfeng Nissan.
In the new energy track, power battery modules are the only energy carrier of pure electric vehicles and are the core components of pure electric vehicles. Whether a new energy vehicle is good or not depends on whether the "battery heart" is good or not.
ARIYA is the first electric vehicle built by Dongfeng Nissan based on a pure electric platform. It sells for 252,800-297,800 yuan after subsidies. Officials have also launched limited-time discounts since February, with the discounted price starting at 224,800.
What impressed me deeply is that Dongfeng Nissan's electric vehicles are all self-developed from model development and design, chassis system, "three electrics" system and intelligent configuration. Different from the direct OEM model of other manufacturers, Dongfeng Nissan insists on customizing battery cells according to Nissan's high global standards. At the same time, it develops its own battery pack park design scheme, builds its own independent dedicated production line in the Wuhan factory, and conducts 100% strict testing and screening. The purpose is to ensure the high safety, long life and high density of the battery and protect the "big heart" of ARIYA.
1. Nissan-style positive new energy vehicle manufacturing ideas
I clearly remember when I interviewed Mr. Alfonso Albaisa, Senior Vice President of Global Design of Nissan Motor Company, at the Nissan Yokohama Plant on the eve of the 2019 Tokyo Motor Show, he said that ARIYA is synonymous with Nissan Motor Company , which opens a new chapter in Nissan’s automotive design philosophy and research and development. It's clear how much thought he put into this car.
Alfonso Albaisa, Senior Vice President of Global Design, Nissan Motor Company
The word "ARIYA" originated in ancient times and was used to mean "to arouse the respect and admiration of others." ARIYA uses an extremely smooth, seamless, sharp and powerful design style, and the light and shadow effects give people a beautiful and pleasing feeling.
You must know that in the era of fuel vehicles, Nissan's HR series, MR series, QR series and the latest VC-T series engines have impressed car owners and fans in terms of performance, fuel economy and durability. Very impressed. Dongfeng Nissan's introduction of domestically produced ARIYA is obviously still hoping to take advantage of the valuable assets created by Nissan in the country in the era of fuel vehicles.
Therefore, the manufacturing of electric vehicles is completely different from the new domestic car-making forces from the very beginning. Nissan has built its own independent electric vehicle production line, built its own battery Park packaging factory, etc., and has paid close attention to every detail of the vehicle. Only after these controls are in place will the vehicle be put on the market for sale.
This has two benefits. On the one hand, it can ensure that the quality of vehicle design is consistent and traceable; on the other hand, it is produced on its own production line during the manufacturing process, without the communication barriers caused by OEM production, ensuring production efficiency and quality.
This is also the way most traditional OEMs build electric vehicles. However, the disadvantage is that the chain from design to mass production is too long. The long demonstration and verification time misses the opportunity for rapid iteration of domestic electric vehicles, resulting in new products. After listing, it has been relatively passive in all aspects.
Take ARIYA’s power battery as an example. As the first new energy model produced by Dongfeng Nissan’s Wuhan factory, ARIYA adopts global advanced technologies, such as the first domestically introduced Aplas welding technology, domestic TOP-level Glue coating automation, etc.
In order to ensure the safety of power batteries, ARIYA’s battery packs are assembled and produced in accordance with Nissan’s global standards in customized independent battery lines; battery pack production uses a new two-component polyurethane automatic coating process to ensure battery safety at every level. and durable; its assembly adopts intelligent management, with intelligent positioning and tightening management system, high-precision positioning and fully automatic transfer, and each process has 3D real-time online visual inspection to ensure battery safety and quality assurance.
In addition to meticulous workmanship, high-precision testing is carried out in every workshop and every link. For example, the stamping workshop adopts the new blue-light scanning method for measurement; for example, the welding workshop introduces automated precision testing and blue-light testing systems for car bodies, increasing the automation rate. As high as 93%; the coating space realizes the introduction of online appearance inspection technology for the first time in China, with an automation rate of 90%.
It can be seen that Dongfeng Nissan is producing new energy vehicles in full accordance with its successful experience in manufacturing high-quality gasoline vehicles. This is much more rigorous for those new car-making forces that rely on others to build cars. The quality of new energy vehicles is also more reassuring.
2. Nissan’s solution for power battery safety
According to reports, ARIYA batteries follow the world's highest safety standards, combine with Nissan's battery safety architecture/concept, and use comprehensive and rigorous safety testing to create a nine-layer ultra-safe battery architecture.
ARIYA's nine-layer battery safety architecture is not simply a structural stacking of batteries, but self-developed three-dimensional intelligent safety technology to create an indestructible "golden bell" for the battery in terms of active and passive safety. .
Integrated aluminum battery cabin
In terms of passive battery safety protection, ARIYA uses an integrated aluminum battery cabin with six reinforced aluminum columns and beams in the middle, which can improve the battery pack’s resistance to extrusion and collision and protect the internal cells and molds. Group.
In the battery compartment, the cells are produced in accordance with Nissan's global high-standard customized line. The double-layer stacked module has unique double anti-collision bumpers, the wire harness is precisely laid out and carefully equipped, creating the first line of passive battery safety protection. Line of defense.
Frame 1500MPa ultra-high-strength steel
Frame collapse protection space
Chassis armor protection
Outside the battery compartment, some areas of the frame are made of 1500MPa ultra-high-strength steel, and the chassis is fully covered with resin armor to prevent the battery compartment from being squeezed and deformed. This forms the second line of defense for ARIYA battery passive safety protection.
Dry and wet separation integrated liquid thermal management system
In terms of active battery safety protection, ARIYA uses Nissan's self-developed battery precision management system, wet and dry separation integrated liquid thermal management system and other battery management "soft power" to keep the battery in the best working condition. .
It is worth mentioning that ARIYA uses the PTC heater in the battery management system to quickly heat the air conditioner to meet users' needs for car heating in winter.
In addition, Nissan engineers introduced that ARIYA In order to ensure the safety of use in various scenarios, the power battery has to experience falling, submerging, freezing, fire, There are numerous tests such as collisions, and there are as many as 111 battery safety tests, covering various types such as mechanical safety tests, environmental safety tests, and electrical safety tests.
Conclusion: The current pain point for consumers when choosing electric vehicles is nothing more than the safety of power batteries. In order to ensure the safety of batteries, each OEM has its own solution. However, compared to relying on borrowing money or outsourcing R&D and production, I believe that a full-stack self-developed and independently controlled production method is more conducive to controlling the quality of vehicles and batteries.
Chen Haocun, General Manager of Dongfeng Nissan New Energy Vehicle Sales Co., Ltd.
As Chen Haocun, general manager of Dongfeng Nissan New Energy Vehicle Sales Co., Ltd., said: "Protecting the lifeline of users is the insurmountable bottom line of Dongfeng Nissan. Real safety is not to make up for the situation, but to prepare for a rainy day; a real sense of security is not only It lies in the good impression after falling in love at first sight, and moreIt lies in the protection of the long flowing water. ”
Editor: Zhao Shilin