We often say that safety is the foundation and bottom line of a car. For pure electric vehicles, the most fundamental thing is battery safety, which is also one of the core issues that consumers are always most concerned about. Of course, car companies are also trying to break through this difficulty through technical means, but sometimes driven by passive efforts, they inevitably fall into a priority and profit-seeking situation.
Different from other car companies, guarding the lifeline of users is the insurmountable bottom line of Dongfeng Nissan. In the era of fuel vehicles, the engine is the heart of the car. A long-standing saying that "the key to Dongfeng Nissan's car is the engine" has become a distinctive label of Dongfeng Nissan. The times are advancing and the technology is updating. When people talk about Dongfeng Nissan pure trams at the new energy track, they can blurt out that "the key to Dongfeng Nissan's new energy vehicles is a good battery core", which is Dongfeng Nissan's firm and simple pursuit and desire. Dongfeng Nissan starts with ARIYA ARIA, sets a battery safety benchmark with ultra-safe batteries, and gives users a solid safety commitment. Not long ago, Aria Aria successfully passed three rigorous tests of China Automobile Center with ultra-safe battery technology, which responded to the essence of this commitment. So, why and how can ARIYA ARIYA do it?
"Electric Shock" 76 years, Nissan pure electricity has always been accompanied by safety.
As an old car company, many people may know more about Nissan's performance in the field of traditional fuel vehicles, but they don't know that Nissan is also the "big brother" in the field of pure electric vehicles. Its "electric shock" experience can be started from 1947 76 years ago. In the context of the global oil crisis at that time, Nissan launched the first electric car TAMA. No one can imagine that this electric car with a battery life of 96.3km and a top speed of 35.2km/h can become a milestone and sail to a farther future. From this point, we can also know that Nissan is indeed one of the earliest brands in the world to deploy pure electric vehicles.
Next, 1983, Nissan March EV, the world's first electric vehicle with AC asynchronous motor, was born, which made the world enter an era of "motor technology", 30 years earlier than Tesla, and had a far-reaching impact on the development of pure electric vehicles. 1996, Nissan, as the inventor of lithium battery, introduced the world's first Prairie Joy driven by cylindrical lithium-ion battery, which worked in the extreme environment of the Arctic for 6 years and the battery was trouble-free. In 20 10, the world's first mass-produced leaf electric vehicle equipped with permanent magnet synchronous motor went on the market, and won the "Top Ten Engines in the World" award in 20 1 1 year. As of February, 2022, the cumulative sales volume of Leaf Wind was 648,000 vehicles, ranking first in the world for eight consecutive years, with a cumulative mileage of 2 1 100 million. The proud record of battery 0 safety accidents is internationally renowned.
It can also be seen that in the past 76 years, Nissan's persistence and persistence in battery safety has never changed. Even though times have changed, in this new era of pure electric vehicles, although many car companies claim to have the self-research strength of "three electric technologies", whether it is safe and reliable has not been verified for a long time, and Nissan's "three electric technologies" have already passed the verification stage. Specific to the power battery, Nissan believes that only under the premise of safety, find the best balance between energy density and charging speed, is the truly excellent power battery.
Challenging the three rigorous battery tests of China Automobile Center, ARIYA Ariya is really powerful.
As the saying goes: Facts speak louder than words.
On February 13, 2023, Dongfeng Nissan ARIYA ARIYAKANG China Automobile Technology Research Center Co., Ltd. (hereinafter referred to as "China Automobile Center") passed three rigorous tests of "high-pressure flushing, four times national standard temperature shock and durable vibration", with the excellent performance of "no water leakage, normal battery function, no internal and external structural damage, intact air tightness and no obvious attenuation of bolt torque".
Among them, in the high-pressure flushing test, after the multi-directional continuous injection of the high-pressure water gun, the function of ARIYA ARIYA battery pack is still normal, and no water leaks into the battery pack after disassembling and analyzing the battery pack. Daily driving will inevitably encounter wading road conditions, and the problem of "fear of water" of pure electric vehicles will not be solved. How to make users feel at ease? ARIYA ARIYA battery pack can still be watertight under such fierce "destruction", and its meticulous protection ability can be seen, which can also avoid users' travel concerns.
In the temperature shock test of 4 times the national standard, ARIYA ARIYA successfully challenged the stricter temperature range and the number of alternating cold and hot cycles than the national standard. The experimental temperature range specified by national standards is -40℃~ 60℃, while the temperature shock range accepted by Arria Arria exceeds 60℃, which is equivalent to the temperature difference between the "extremely cold" Mohe River in the northernmost part of China and the "hot pole" Turpan Flame Mountain. In addition, compared with the five alternating cold and hot cycles in the national standard, the number of cycles of ARIYA ARIYA has increased to 20. The test results show that the air tightness of the battery pack remains intact and there is no structural damage inside and outside, which fully proves the stability and reliability of ARIYA ARIYA battery. In Rener, it's hot and cold, accompanied by ARIYA Ai Ruiya, users can travel with peace of mind.
There is also a lasting vibration test. ARIYA battery has been continuously subjected to three-dimensional random vibration and sinusoidal fixed frequency vibration. After the test is completed, the test requirements for external air tightness, nondestructive damage of internal and external structures and torque attenuation of bolts are added. The test results show that the air tightness of the battery pack remains intact, there is no structural damage and leakage inside and outside, and the bolt torque is not obviously attenuated, which verifies the anti-vibration performance of ARIYA ARIYA battery. Even if Lu Yu is bumpy, users don't have to worry about the safety and stability of ARIYA battery.
After high-pressure water hammer, temperature test, bumps and vibrations, and triple challenges, ARIYA ARIYA can still successfully pass customs clearance with excellent results, which fully proves the benchmark strength of ARIYA ARIYA battery as a "safety top student". At the same time, the success of this challenge not only injected a shot in the arm to eliminate the safety anxiety of users, but also refreshed the new height of battery safety of new energy vehicles in China. What made ARIYA successfully challenge the three rigorous tests of China Automobile Center? This has to mention the nine-fold physical protection structure in Nissan's ultra-safe battery architecture, and the11battery safety test that ARIYA battery experienced in the research and development process.
As we all know, today's automobile safety covers passive safety at the structural level and active safety at the system level. In fact, the same is true of battery safety. ARIYA ARIYA Nissan's ultra-safe battery architecture adopts a nine-fold physical protection architecture to build a super battery security domain with "soft and hard integration, both offensive and defensive, and internal and external coordination", creating an indestructible "golden bell jar" for the battery and laying a solid fortress for users to travel safely.
Let's look at passive safety first. ARIYA ARIYA adopts an integrated aluminum battery compartment with six reinforced aluminum columns and beams, which enhances the compressive strength of the battery pack and protects the internal batteries and modules. The battery cell is produced by Nissan global standard customized dedicated line, and 100% is strictly tested and screened. Aerogel is installed between batteries to prevent fire and explosion. Double-stacked module design not only has high space utilization rate, but also can accommodate more batteries; And equipped with double anti-collision bumper, reducing the pressure and buffer, and weakening the impact force of collision. Accurate and standardized wiring harness layout not only reveals the craftsman spirit, but more importantly, the high-voltage wiring harness is located in the center of the battery pack, which can avoid the damage of lateral impact force to the wiring harness as much as possible; Moreover, the high-voltage line at the front end adopts an integrated rear design scheme, and a protective structure is set to avoid short circuit caused by damage to the high-voltage line during impact.
Outside the battery compartment, a lower guard plate made of reinforced resin is installed at the bottom of the battery pack to cover the whole vehicle bottom, which can avoid the large impact force caused by the direct impact of hard foreign objects on the lower shell of the battery; Moreover, ARIYA ARIYA has designed collapse protection spaces on the front, rear, left, right and lower surfaces of the car body, and the impact energy absorption reaches 1.98 times of that of C-NCAP; More importantly, ARIYA ARIYA uses three ultra-high strength steel beams to cooperate with 1500MPa car body to form a protective "king kong cover", which can effectively resist the collision pressure from the front and side.
Let's look at active safety. 1. BMS battery accurate management system can monitor 200+ parameters of the battery system in real time in the shortest time of 10 millisecond, including voltage, current, temperature, etc. According to these data, the working state of the battery can be adjusted in real time to ensure that the battery can keep the best state under high and low temperature environment and multiple continuous fast charging, effectively improving the service life of the battery and prolonging its service life; At the same time, the VCM vehicle management system will also detect the running state of the battery in real time, and actively intervene in circuit faults to achieve the effect of battery safety and redundancy. Second, the wet-dry separation integrated liquid thermal management system, liquid pipeline and battery bottom plate are integrated together, dry-wet separation, physical separation, to prevent short circuit failure caused by liquid leakage. At the same time, the radiator of the temperature control system is located in front of the car, and the cooling efficiency can be improved by using the oncoming airflow; The PTC heater is located in the middle of the temperature control liquid flow path and the rear end of the battery pack. The combination of the two can intelligently control the temperature according to environmental changes, so that the battery can always maintain the best state.
Through the above analysis of the internal protection of the nine-fold physical structure, we can see the excellent strength of ARIYA battery technology. But as that sentence says, no matter how clever the design is, it is also an armchair strategist. In the end, the safety of the battery system still depends on standardized tests to verify. This point has been involved in the development and verification stage of ARIYA ARIYA battery. The battery has to undergo many tests such as falling, flooding, freezing, fire and collision, and the related battery safety test is as high as11. These11/battery safety tests include 23 national standard tests, 13 global standard tests and 75 Nissan standard battery pack tests, covering mechanical safety tests, environmental safety tests, electrical safety tests and other types, fully ensuring the safety of users in various scenarios.
Among them, the daily production standard is stricter than the national standard, for example, the number of cycles of alternating temperature impact test is four times that of the national standard, the cumulative time of wet-heat cycle test is 9.6 times that of the national standard, and the cumulative time of salt spray test is three times that of the national standard. Stricter test standards ensure a higher safety factor of power batteries, which is also Nissan's persistence and efforts to achieve the ultimate goal of zero accidents in battery safety.
Ingenious creation, service benchmark, ARIYA Ai Ruiya is full of sincerity.
In addition to safety technology, Dongfeng Nissan also lays out the layout from the source of production. In Wuhan factory, ARIYA ARIYA, as the first new energy vehicle produced by the factory, has gone through hundreds of rigorous processes, meticulous workmanship, ultra-safe battery technology and high-precision intelligent detection ... to ensure the high quality of the products. The battery pack of ARIYA ARIYA is assembled and produced according to Nissan's global standards, which ensures the safety and durability of ARIYA ARIYA batteries. Independent battery production line and new energy vehicle production position further strengthen ARIYA ARIYA as the underlying logic of users' peace of mind.
In addition, the brand-new marketing service model makes the service without interval. Domestic use of new energy experience center and authorized franchise stores mixed mode, 800+ sales service network full coverage; O2O fully transparent innovative sales service model, focusing on the user's perspective of the new service standards, to create a pleasant service experience; The charging map is connected to 3 1 10,000 public * * * charging piles, covering more than 80% of public * * * charging piles, so that users can get rid of charging anxiety. There is no worries about buying a car, using a car and maintaining a car, and there are sincere official subsidies and heavy user benefits such as the lifetime warranty of Sandian and the lifetime warranty of the whole vehicle, which fully meet the expectations of users.
Write it at the end
Safety is the premise of everything. For pure electric vehicles, battery safety is fundamental and the core interest of consumers. With 76 years of pure electric technology, nine-fold physical structure protection and11battery safety test, Nissan has given ARIYA excellent battery safety. , and set up a new height of battery safety to protect users' sense of security.
(This article was originally written by Wu Wen Lane New Media Studio, please indicate the source: Wu Wen Lane, Author: Hefeng)
This article is from Wu Wen Lane, the author of Easy Car Number, and the copyright belongs to the author. Please contact the author for any form of reprint. The content only represents the author's point of view and has nothing to do with the car reform.