In terms of battery safety technology, Ian is exploring areas that no one has set foot in.
Text/"Autobot" Sharla Cheung
On April 2nd, on th
In terms of battery safety technology, Ian is exploring areas that no one has set foot in.
Text/"Autobot" Sharla Cheung
On April 2nd, on the electric vehicle committee of 100, Xi Zhong Min, deputy general manager of Ai 'an, said: "As long as the spontaneous combustion data is not zero, the safety reform will never end."
Industry forums can be retired, and enterprises must be pragmatic. On the road of promoting battery safety technology, Ai 'an has gone "quite far".
How far is "quite far"? To put it simply, Ian is exploring uncharted territory. On March 30th, Aian released a new generation of power battery technology "Magazine Battery 2.0", which redefined the battery safety standard with unprecedented shooting test. Compared with the original magazine battery, the former is not like version iteration, but a subversive technical update. Sure enough, the most powerful challenge to the champion is self-challenge.
Xi Zhong Min, Deputy General Manager of Ai 'an Company.
The moat of new energy brands will always be judged by whether there is "original technology, leading technology and exclusive technology". At the moment when the market is increasingly "involution", there has always been an "involution king" leading the industry in innovative technology and rolling out of the new height of battery safety.
On the day when the magazine "Battery 2.0" was launched, it triggered a shock in the industry, which not only refreshed the public's awareness of battery safety, but also showed the industry that the technology centered on battery safety had reached an unimaginable height two years ago.
Thermal weapon destruction test, only magazine battery 2.0 can be carried.
With the popularity of electric vehicles, battery safety has become the first choice for consumers. Following the needle punching test of BYD lithium ferrous phosphate blade battery, in 20021year, the whole package of ternary lithium battery was needle punched for the first time in the industry, redefining the safety standard of ternary lithium battery.
Judging from the current data of spontaneous combustion of electric vehicles, battery safety is still a pain point and problem in the industry. Although the magazine battery has passed all kinds of extreme road tests of more than 65.438+000 billion kilometers, it is safe to charge and its spontaneous combustion is zero. However, taking safety as an unforgettable belief, one in ten million risks will never be allowed.
For this reason, Ai 'an put forward higher requirements for battery safety, not only to solve the problem of not catching fire in the acupuncture scene, but also to consider the problem of battery thermal runaway protection in extreme cases.
Ian chose a very intuitive test method to make consumers and the industry realize the safety level of magazine battery 2.0 at the same time-shooting test.
If Ai 'an realizes that the whole package of ternary lithium battery doesn't catch fire, which is comparable to "climbing Mount Everest", then the difficulty of not catching fire in this shooting test is "manned landing on the moon" in the field of battery safety. This is because the shooting test produces more severe damage conditions than the acupuncture test.
In fact, the acupuncture test does cover external infiltration conditions that are more serious than the actual impact.
General impact, even if it continuously breaks through the protection of the rear bumper, chassis longitudinal beam, energy absorption area, PACK upper cover and support beam, is also a blunt impact, more like squeezing the battery module. Its failure mode (or thermal runaway), that is, forcing the dielectric between anode and cathode to deform, thus internal short circuit.
Acupuncture is rough. The needle tip converges to a stronger pressure, which pierces the medium and directly causes the internal short-circuit channel. As a result of short circuit inside the battery, if there is only smoke, no fire or the fire is delayed for a long time (it must not detonate), enough people can escape, which is already excellent. This shows that battery technology can control and delay thermal runaway well through thermal isolation and pressure relief.
The needle penetration speed is less than 10mm/s, and the penetration into a single core is less than 20%. Although the wound reached 8mm, the core structure was basically intact. In Ian's view, this is not extreme enough.
Under the external impact of instantaneous large kinetic energy and "high penetration", the three cell structures are physically damaged at the same time, and the instantaneous energy released by thermal runaway is five times higher than that of acupuncture. At this time, can the battery core delay or slow down the occurrence of thermal runaway (in view of large-scale physical damage, internal short circuit is inevitable, just a matter of strength)?
Ian put forward the conditions for shooting, which seems incredible. The idea is that the simulated instantaneous impact force is more than 2800 Joules, which can only be achieved by shooting with a 5.56 mm rifle (the muzzle kinetic energy of the pistol is insufficient), resulting in a wound diameter of more than 60 mm.
If there are followers who exceed the national standard and the line standard in the acupuncture test, there is only one player who participates in the shooting injury test at present.
Due to the penetrating pressure and velocity (momentum) brought by high kinetic energy, the wound caused by shooting is large and deep. In other words, it is the generational difference brought by cold weapons and hot weapons. Thermal runaway defense must also be substantially improved at the program level. Just like an iron shield can defend against bows and arrows, but to defend against bullets, you must use Kevlar body armor.
Active and passive buffers are stacked to new heights.
What is the "Kevlar" of magazine battery 2.0?
2.0 Based on the four safety technologies of magazine battery, a new thermal insulation technology, namely nano-ceramics, is developed to isolate the positive and negative electrodes. When extreme events occur and the dielectric is broken down, this heat-resistant layer improves the interface stability of the positive and negative electrodes and prevents internal short circuit (in fact, it also plays the role of replacing the dielectric). If the internal short circuit is unavoidable, the double heat-resistant layer delays the heat transfer process at the cost of its own temperature rise and plays a flame retardant role.
Moreover, after the internal short circuit occurs, the heat will cause the "composite current collector" near the short circuit point to collapse and become an open circuit. Using this compound is equivalent to installing a "fuse" inside the battery.
AEON cooperated with China Aerospace to deploy "phase change materials" outside the battery module. This material absorbs a lot of heat by changing its "phase" (solid-liquid, liquid-gas), but the temperature changes slowly (its latent heat of phase change is 10 times higher than that of conventional materials).
Combined with double-layer (upper and lower) cooling system, the cooling area of the battery increases by 100%, and the cooling efficiency increases by 50%.
In this way, magazine battery 2.0 added four thermal defenses, but Ai 'an's technical team was not satisfied, and they actually developed active defense technology. This move broke people's cognition: battery thermal protection can only rely on passive defense.
A fire extinguishing chamber is isolated inside the battery pack, which stores fire extinguishing agent with strong temperature stability. If passive defense can't stop the thermal runaway, the "partition wall" made of low melting point alloy will be melted, and the fire extinguishing agent will be released instantly and sprayed on the runaway battery accurately. The best thing is that the extinguishing agent produces inert gas to wrap the out-of-control battery to prevent fire.
At the same time, the generated gas and Mars, as well as 99.5% PM 10 particles are eliminated by gas emission treatment technology. Don't forget to protect the environment while putting out the fire. Good, Ian.
Ian claims that each battery unit in magazine battery 2.0 has its own "fire brigade", which is actually more like an automatic sprinkler system, which can be put in place without calling.
With this means, AEON has become the only provider of package-level active security solutions in the world. That's not enough. Looks like stacking Buff is a little addictive. They have deployed the sixth-generation cloud BMS, which can monitor the battery health in the background no matter what state the car is in.
Ian said that the current threshold of cloud AI's ability to identify internal short circuits is 200Ω, which is much higher than the risk line of10Ω. This is equivalent to every AI 'an car being a front-line fighter, and the cloud AI acts as an early warning aircraft, giving safe action instructions to the "fighter" through the Link communication link.
Security measures were rolled to the extreme, and Ian proved that he was not "bragging" with actual deployment.
Complete the technical vision, and all the "bragging" has been realized.
At one time, some technical goals set by Ai 'an were too unrealistic or even illusory for others, and were considered as bragging.
In 20021year, Gu Huinan, general manager of Guangzhou Automobile Ai 'an, promised that Ai 'an brand would realize a battery scheme with a battery life of 1000 km, a new height of safety and a super fast charge (A480,480,480 480kW).
At that time, everyone didn't know what a "new safe height" battery was, and it didn't attract much attention. But 1000 km battery life and 480kW fast charge are no strangers to us. After a lapse of two years, some manufacturers have achieved certain single technologies, such as 1000 km battery life (although it is only product planning now) and 6C fast charging. However, it is worth mentioning that only Ai 'an can achieve the above three dimensions at the same time.
We can guess that when Ian made a promise, in fact, all three technologies had been laid out and were progressing smoothly, only one layer of paper was needed for commercialization. In terms of new energy technology, GAC Research has accumulated a large number of patents and engineering application methods for a long time. However, due to poor information or hard-to-reach technical imagination, most outsiders can't understand it well.
The video and data tested by the magazine "Battery 2.0" released now are shocking and worrying. Ai an is still doing business in a down-to-earth way!
Behind Ai 'an's high profile is the guarantee for the progress of the underlying technology. Dare to think, dare to do, be pragmatic and practical, and honor your promises with actions and results.
Even though the goal span is large and it seems difficult, Ian actually achieved it. These world-leading "black technologies" have completely solved the pain points of electric vehicle consumption, and are also the basis for Ai 'an to continue to lead the industry.
Inheritance and innovation are like a lifetime ago.
Magazine battery 2.0 didn't come out of thin air. No matter how big the technological leap is, it also needs to inherit the previous generation technology well. On 20 1 1 year, Ai 'an began the research and application of electrification technology, forming a large number of technical achievements and talent reserves.
Iterative to today, it has carried more than 400,000 vehicles with original technology, experienced various extreme road test of 65.438+000 billion kilometers, and included 68 million times of safe charging and zero spontaneous combustion. Magazine Battery 2.0 came into being on it, reflecting the strength of Ai 'an's self-research.
The market is the final judge. In 2022, Miko Wu sold 276,5438+0,000 vehicles; In February this year, the sales volume was 30,086 vehicles, up 253% year-on-year and 65,438+095% quarter-on-quarter. In March, the sales volume exceeded 40,000 vehicles and entered a new stage of scale effect. The market shows a gesture of recognizing Ai 'an's product ideas and safety concepts.
However, Ai 'an is not satisfied with this, relying on the "spring and summer new product release in 2023" to pursue victory and expand the market leading edge.
Aian released 2023 AION Y Plus and 2023 AION S Plus, and launched a series of heavy user rights. AION V Plus and AION LX Plus have also introduced preferential policies with the highest financial discount of 10000 yuan and the highest replacement subsidy of 6000 yuan. At the same time, according to Guangzhou's new round of new energy subsidy policy, the models of Ai 'an Safety Department received subsidies ranging from 6000- 10000 yuan, with unprecedented preferential strength. It can be predicted that Ai 'an is about to set off a new wave of hot sales and is sure to achieve the annual sales target of 600,000 vehicles.
In terms of technology development, Ian did not build a car behind closed doors. Aian invested 654.38+009 billion yuan to set up a silver battery technology company. On this platform, we reached strategic cooperation with the terminal suppliers of head materials such as Ganfeng Lithium Industry and Han Rui Cobalt Industry, which not only rolled the technology to a new height, but also sought to get through the strange experience of battery R&D, production and sales.
With the passage of time, we can't easily deny the possibility that batteries will be provided to other OEMs in the way of authorized production. Not only in the EV field, but also the information about the change of cooperation mode between AH8 project of Ai 'an and Huawei, which can better confirm the strength of ICV research and development of Ai 'an.
In fact, Ian's ambition doesn't stop there. Ai 'an is still preparing for the whole package shooting test of ternary lithium battery, which will accelerate the complete end of users' battery safety pain points through continuous breakthroughs and innovations.
Under harsh environmental conditions, the application scope of magazine battery 2.0 will no longer be limited to paving roads and civil use. In the future, magazine battery 2.0 will bring users a safer experience in extreme car scenes such as track, cross-country and adventure, and also provide possibilities for underwater and aerospace applications.
The tree of science and technology first points to "safety", and love is safe and steady. Aian's pursuit of battery safety technology is almost paranoid, and safety has become an important embodiment of Aian's brand value.
Magazine battery 2.0 will also be gradually installed on Haobo models to achieve mass production applications. On this basis, it is logical for Ai 'an to build a high-end brand image.
Previously, the technology unicorn Ai 'an received 654.38+083 billion yuan in financing, and the A round exceeded 100 billion yuan. This year's technology-intensive release has opened up more imagination in the capital market.
Deeply cultivate the fertile soil of technology, love safety and enter the technical blowout period, and the strength of latecomers will be even more amazing. The breakthrough of battery safety technology is the key to accelerate the popularization of pure electric vehicles and even promote the whole energy ecological change. In the future, magazine batteries will continue to develop from battery safety protection to energy control.
Aian's contribution to battery safety and new energy development is not only at the level of commercial operation. Copyright statement This article is the original manuscript of Autobots and may not be reproduced without authorization.
This article comes from Autobot Media, 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.