There is no doubt that new energy is the general trend. Consumers who buy new energy for the first time are often attracted by some fancy gimmicks of electric vehicles, even because they decide to place an order.
Back to the driving level, buy a fuel car to see the three big pieces, and also buy an electric car to see the three electricity. Especially battery safety.
Recently, ARIYA ARIYA successfully passed the three rigorous tests of "high-pressure flushing, 4 times national standard temperature shock and durable vibration" in China Automobile Center with ultra-safe battery technology, and the battery safety was endorsed by the authority. So, compared with Tesla's 4680 battery, how is its strength?
Self-research of battery technology and construction of battery safety fortress
As the power source of new energy vehicles, power battery is the most important system in the whole vehicle. If the heart of a traditional fuel vehicle is an engine, then the heart of a new energy vehicle is a power battery.
As the core component of new energy vehicles, its safety has been deeply concerned by consumers. Without revolutionary changes in chemical materials, at present, the life and safety of batteries can only be improved through physical structure, including mainstream blade batteries, Kirin batteries, magazine batteries and 4680 batteries. In fact, they all focus on the shape and technological innovation of battery packs.
Today we will talk about Tesla's 4680 battery in detail:
Tesla's 4680 battery is cylindrical, and the battery structure adopts CTC scheme, that is, the cylindrical batteries are directly arranged on the car body to form a battery compartment.
Simply and to the point, increasing the diameter of 4680 battery reduces the cost of manufacturing and assembly, which means that large bottles of mineral water are more cost-effective than small bottles of mineral water. After all, the same bottle contains more water, and the price of making bottles becomes lower.
In addition, the adoption of electrodeless ear technology also reduces the internal resistance of the battery and improves the safety and fast charging. Therefore, the biggest significance of 4680 battery for Tesla may be to save costs and improve fast charging performance.
According to Tesla's official data, 4680 battery can save about 86% of the cost, and the cost per kWh can be reduced by 69%. Although everyone knows how good the 4680 battery is, its shortcomings cannot be ignored.
First of all, the 4680 battery and CTC scheme are adopted, and the battery cells are directly integrated in the chassis, which will lead to the problems that the battery cells expand, which will lead to the difficulty of internal heat dissipation and shorten the battery life.
In addition, the 4680 battery is deeply integrated on the chassis. In order to accommodate more batteries, some Tesla models equipped with 4680 batteries have insufficient protection on the side.
In accidents, electric vehicles are most afraid of side column collision, because the energy absorption of the car body is limited, the chassis invasion is large, and a lot of energy is absorbed by the battery.
Therefore, there is no obvious anti-collision safety structure on the side of the car body, which is a serious injury to the 4680 battery model.
In contrast, as an old-timer of electric vehicles, Dongfeng Nissan is quite accomplished in the safety of battery structure. ARIYA, which integrates the latest technology of Dongfeng Nissan, is equipped with an ultra-safe battery architecture.
It is embodied in three aspects: physical structure protection, battery accurate management system, and dry-wet separation integrated liquid heat management system.
As we all know, whether the battery is safe or not is a comprehensive consideration of internal and external factors. Nissan battery adopts high-standard customized battery, and aerogel is added between batteries to play the role of fire prevention and explosion prevention.
In addition, a lot of efforts have been made in the physical structure, such as the double stacked module with anti-collision protection fence and the integrated aluminum battery shelter. Not only the space utilization rate is high, but also more batteries can be accommodated. The battery box with six aluminum column beams and three additional steel beams can effectively resist the collision pressure from the front and side.
The bottom is fully covered with reinforced resin to prevent foreign bodies from colliding with the battery compartment during daily driving, so that daily driving is more secure.
In addition to the protective measures of high-strength steel, there is room for collapse protection in the front, back, left and right of the battery compartment, which greatly prevents the battery compartment from being squeezed and deformed.
From this point of view, ARIYA ARIYA battery safety has inherent advantages in physical architecture, and harness protection is more standardized. Putting the high-voltage line interface behind the powertrain can avoid the short circuit caused by the damage of high-voltage line protection during collision.
In the aspect of battery safety management, the latest self-developed battery management system is adopted to carry out multi-dimensional and high-frequency detection on the battery, so as to ensure that the working state of the battery can be intelligently adjusted, to ensure that the best charging and discharging power can be maintained in harsh environments, and to improve the battery life and prolong the battery life.
In addition, when consumers are most concerned about the charging speed, ARIYA can reach 30%-80% in just 30 minutes.
In the aspect of battery thermal management, ARIYA adopts the integrated liquid thermal management system of dry and wet separation. Simply put, the battery module is separated from the liquid cooling system, and the structural support and liquid cooling are integrated.
The utilization rate of internal space has been better improved. In addition, with the help of PTC heater and cooler, the battery can be kept in the optimal temperature state continuously and quickly, and the phenomenon of battery life plummeting and thermal management maladjustment in winter can be reduced.
Judging from the controllability of battery quality, many new energy vehicle companies are now directly OEM in order to reduce production costs. In my opinion, as a new energy automobile company, it is incredible that it has not mastered the heart technology in its own hands.
Different from the direct OEM mode of Tesla battery, Dongfeng Nissan has the full link self-research capability of battery technology. ARIYA ARIYA's battery is manufactured by Contemporary Ampere Technology Co., Ltd. according to Nissan's technical requirements. Therefore, Nissan strictly controls the performance, quality and safety of batteries produced by Contemporary Ampere Technology Co., Ltd..
In addition, Dongfeng Nissan is one of the few manufacturers with battery assembly lines in the market, and has a special battery assembly workshop in Wuhan factory. The advantage of doing this is that every process about the battery is in your own hands, which is also the source of Nissan's confidence in battery safety.
Not only that, ARIYA ARIYA comes from Renault-Nissan-Mitsubishi Alliance, and the top intelligent, green and efficient digital benchmarking factory in China-Wuhan Factory.
So ARIYA ARIYA is definitely an excellent student in battery safety.
In view of the battery safety problem, it passed the strict test of China Automobile Center.
New energy vehicles have "three fears", one is afraid of overcharging, the other is afraid of water entering during use, and the third is afraid of collision. Back to the user's daily car, the road conditions are complex, and the whole vehicle not only needs to meet certain requirements such as stiffness, strength, durability and NVH performance. At the same time, as the most important part of new energy vehicles, battery packs also need to withstand various harsh working conditions.
ARIYA ARIYA successfully passed the three severe tests of "high pressure flushing, four times national standard temperature shock and durable vibration" in China Automobile Center with super-high standards. "There is no structural damage inside and outside, the battery pack functions normally, the battery pack has no water leakage, the air tightness is intact, and the spiral torque has no obvious attenuation".
It can be seen that there is really no need to worry too much about the safety of ARIYA ARIYA batteries.
People-oriented car-making ingenuity, caring and worry-free service mode
At the same time, in terms of service, Dongfeng Nissan in the era of pure electricity relies on years of accumulated experience. Whether it is pre-sales or after-sales service, it has inherent advantages.
Dongfeng Nissan has innovated the business model of traditional dealers. The combination of traditional dealer mode and direct selling mode is adopted to realize 800+ outlets layout, 300+ cities covering sales and maintenance services, and online shopping guide.
At present, ARIYA ARIYA New Energy Experience Center has been opened in Shanghai, Guangzhou, Shenzhen and Chengdu.
Dongfeng Nissan also provides online shopping guide, door-to-door delivery service, global road rescue service and other O2O fully transparent innovative sales service models.
In addition, the charging map is connected to 3 10000 public charging piles, covering more than 80% of public charging piles, greatly alleviating the anxiety of users.
Write it at the end
Fuel era: Dongfeng Nissan is good, the key lies in the good engine; Pure electricity era: the key to Dongfeng Nissan's success lies in a good battery core.
With a history of 76 years of pure electricity production and the reputation of "2 1 100 million kilometers, 0 major battery safety accident", Dongfeng Nissan ARIYA ARIYA combines the high value of pure electricity production.
Aria Aria not only has a scientific and technological experience without losing new forces, but also relies on a strong pre-sales and after-sales service sales network to dispel users' concerns about battery safety and provide users with more convenience.
The Dongfeng Nissan of "electricity" opens the way with science and technology and saves worry with service. It is leading the joint venture car enterprises to embark on a brand-new electrification road.
This article comes from the author of Che Yi, and the copyright belongs to the author. Please contact the author in any form. The content only represents the author's point of view and has nothing to do with the car reform.