Under the background of "carbon neutrality", the electrification of China's auto market has developed rapidly, and the user's acceptance of new energy vehicles has continued to increase, which has promoted the continuous improvement of new energy vehicle penetration. However, the development process of any thing is not smooth, and the safety of electric vehicles is still highly concerned by the majority of users.
GM is naturally no exception, as a world-class manufacturer, once it runs seriously, the speed is not only faster, the pace is more solid. In fact, in the history of automobile development, GM has always played the role of "bellwether", such as the prototype of contemporary electric vehicles, GM has been manufactured in the 90s of the last century; even the touch screen we say every day, GM has a touch screen car machine system as early as the 80s of the last century. And when Cadillac LYRIQ came to us, we also really saw GM's strong confidence in the field of electrification.
On November 17, 2021, Cadillac LYRIQ was officially unveiled, with excellent appearance, rich black technology configuration and intelligent networking system, which made people stunned. But what attracts me the most is the electric platform of Aoteneng that gave birth to LYRIQ, which embodies the core highlights of flexibility, intelligence and safety, which can be described as impressive.
[01] People have my superiority, and the security technology of the Aoteneng platform is "higher"
With the explosive growth of new energy vehicle sales, the new energy vehicle market has inevitably appeared some "radish fast and do not wash mud" situation. Many new energy vehicle companies blindly pursue high performance, using the same battery solution to quickly cover different markets in order to pursue a large-scale effect, but this has triggered a series of electric vehicle safety accidents.
Many new energy vehicle companies like to use eyeball brushing and gimmicks to publicize battery safety technology and label. Different from the practices of these car companies, the safety technology of the Aoteneng platform pursues the principle of more rigorous, more reliable and more attention to the early test certification, adheres to the concept and technical route of "safety and reliability", and prefers to sacrifice the "eye-catching" battery pack energy density, but also to strengthen the physical collision safety structure, which is a completely different "honest style" from the new forces, but it is more reassuring and trustworthy.
What about the battery security of the Aoteneng platform? Let's start with facts. Previously, SAIC-GM conducted needle punch, drop and squeeze tests on the batteries of the Aoteneng platform, and these tests were completed under the condition of exceeding the national standard data. Among them, the acupuncture test has always been regarded as the "Everest" of battery safety tests, and there are only a few power batteries that can pass the test, especially the ternary lithium batteries with high energy density. The condition of China's national standard acupuncture test is that the battery pack temperature >0 °C, SOC > 95%, and requires that there is no fire and no explosion for at least 5 minutes after acupuncture. The test temperature of the Ternary Lithium Battery exceeds 45 ° C, reaching 48 ° C, SOC >97%, under such a high test standard, the Aoteneng battery still does not appear in the needle puncture test phenomenon such as thermal diffusion, fire, explosion, etc., which changes the inherent cognition that the previous ternary lithium battery is difficult to pass the acupuncture test.
In addition, the daily car process may also encounter violent impacts, bottom impacts, accidental drops, etc., which may cause damage to the battery pack, and the drop and squeeze test of Aoteneng batteries is aimed at these situations.
Among them, in the drop test, Aoteneng battery took the national standard 2 times the standard as the drop test condition, and the results showed that the battery pack did not have electrolyte leakage, fire, explosion and other situations. In the extrusion test, the Aoteneng battery was squeezed by the test conditions of 3 times the national standard, that is, about 30 tons of extrusion weight was simulated in the full power state, and the results showed that the battery pack did not catch fire, did not explode, and did not have serious deformation.
This is enough to show that Aoteneng batteries have excellent physical protection capabilities. But then again, how does the security of the Aoteneng battery, which is armed to the teeth, achieve? This has to mention the general strict test system, high-strength steel and other external protective measures.
Due to the lack of independent research and development and production systems, many new car-making forces buy directly from suppliers and finally produce electric vehicles through their own encapsulated OEM methods. In contrast, GM not only has more than 20 years of electrification research and development accumulation, but also has mastered the core technology, with strong supplier integration capabilities and excellent development and creativity capabilities.
The development and creation mentioned here is not to adapt and transform and change the name through the supplier's technology, but to say that GM currently has new patents in the fields of new metal/composite material research and development, battery cell formulation research and development, etc. every year. The so-called "if you buy it, you can invent it yourself", it is not an exaggeration to describe the R&D department of GM Group.
Based on excellent R&D strength, Pan Asia and local suppliers jointly completed the cell design, development and verification of Aoteneng batteries. In this process, Pan Asia is deeply involved in the formulation of battery cell material system, manufacturing process, performance evaluation, safety abuse and cost control, etc., providing optimized formulas for exclusive batteries, making the safety and life of Aoteneng batteries better than conventional batteries.
For example, the positive electrode of Aoteneng battery cells is 10% more thermally stable than NCM811 through nanoscale atomic coating and directional doping of excessive metal atoms. At the same time, a new generation of aerogel is used as the thermal insulation material between the cells, and an integrated fully independent liquid cold plate is configured between each module, which increases the heat exchange effect by about 10% and the overall life of the battery module by about 15%. In addition, through 3.2 million hours of cell system testing that far exceeds the national standard, the safety of Aoteneng battery cells has been further improved. Compared with the new power model of "consumers as test engineers", GM is too thick.
Not only that, Aoteneng battery also fully enhances the protection ability of multi-position column collision of the body, and realizes a safer battery safety architecture combined with the whole vehicle. In addition, compared with the column collision standards in the industry that mainly examine the single-position column collision ability on the side of the car, SAIC-GM simulates continuous multi-position column collision from A column to C column to investigate the strength of each area of each row of modules, thus having the industry-leading torsional stiffness, further strengthening the safety of Aoteneng batteries and making it more securely integrated with the whole vehicle.
In addition, the all-round heat diffusion protection design adopted by Aoteneng battery integrates 7 "firewalls", including real-time intelligent monitoring system, cell spacing hot wall, patented design for suppressing heat diffusion, rear large-area explosion-proof valve, anti-tension arc design, passenger compartment protection, module integrated liquid cooling system, and seven-fold electric heat management technology to further ensure the safety of Aoteneng batteries.
It can be seen from the above that the development and testing of Aoteneng batteries strictly follow GM's global new energy vehicle standards and are higher than the national standards for New Energy Vehicles in China. In fact, the Aoteneng platform can meet the highest level of functional safety of ASIL-D functional systems, and reach the aviation-level system and functional safety factor, which is also the highest standard for the safety level of electronic and electrical systems in the automotive industry.
[02] People without me, the peak breakthrough of the Aoteneng platform
In addition to the above security technologies, Aoteneng battery also has a unique big move, that is, the wireless battery management technology in the battery pack, which is the industry's first wireless communication technology is the future-oriented intelligent attribute of the Aoteneng platform.
We know that thermal management systems (BMS) are an important link between power batteries and electric vehicles, which integrate the monitoring and management of batteries or battery packs to ensure the safety and reliability of batteries or battery packs and output power in the best state. The wireless battery management system (wBMS) of the Aoteneng platform not only greatly improves the space utilization and technical flexibility of the battery pack, but also brings many benefits to the safety and reliability of the whole package, and also greatly improves the detection efficiency of the production line.
Specifically, the wBMS reduces the battery pack cable by 90% due to the lack of traditional wired connections, achieving lightweight, while increasing the volume energy density and improving the range; and, unlike wired batteries, the performance of Aoteneng wireless batteries can be continuously detected for faults, helping to inform and optimize future battery pack design and assembly, as well as performance in use.
More importantly, wBMS is equivalent to each module integrated with an independent small BMS battery management system chip, as well as a set of WIFI network transceivers, equivalent to a "mini base station", which can not only achieve more reliable data redundancy transmission, ensure accurate data transmission, but also reduce the risk of short circuits, and prevent security accidents caused by too many lines causing short circuits inside the battery pack.
It is not an exaggeration to say that if the battery pack wireless battery management technology this peak breakthrough, after many years of market tests are still stable, it is very likely to cause a big change in the battery pack data transmission technology, for the entire electric vehicle industry battery management or will bring a new way of thinking change, can be called a subversive breakthrough.
[03] Strive for excellence, for higher reliability performance
Under the general trend of electrification transformation, on the surface, the new forces of car manufacturing have seized the limelight in recent years, but for the "technology generalization" with a century-old history and enough accumulation, this does not mean that the future of the automotive industry will be in the hands of these new car-making forces. From the above point of view, GM has chosen a more stable way, through a self-sufficient approach, fully grasp the core technology, especially the quality and safety in the first place, compared to the current car-making forces do not have the ability to self-research, no doubt more reassuring consumers.
GM's dedication to safety in the development and testing of the Aoteneng platform can also be seen from one side. For example, SAIC-GM has established its own new energy test and verification system at any cost, including the Pan-Asia New Energy Test Building, The Guangde Battery Safety Laboratory, and the Aoteneng Super Factory, which also allows SAIC-GM to have the first new energy technology full-link system capability in the domestic main engine factory, covering new energy technology from research and development, test verification, production and manufacturing to local procurement, which is more than many companies in the industry are separately purchasing parts and components for patchwork, which will bring more reliable performance.
For another example, Aoteneng battery system needs to pass 4 leak tests, 2 electrical performance tests, 4 IT system comparison tests, and more than 100 visual system and sensor tests, and only by meeting the industry-leading strict standards can they finally pass the off-line to ensure the overall delivery quality of the product.
In addition, compared with many car companies to sacrifice more technical performance to pursue 1000 km endurance, SAIC-GM's approach is to provide a full-life cycle of battery fast charging capacity, equivalent to each charge fast charging, but the impact on battery capacity is minimal, and the safety of the fast charging process is also guaranteed. SAIC-GM is really fighting to bring consumers a new electric travel experience that is "smarter, more performance, and safer".
Write at the end:
As the saying goes: good food is not afraid of late. Altnon platform blessing cadillac LYRIQ out, so that the whole new energy vehicle field for a shock, not only its highly technological design and intelligence, but also behind its Aoteneng platform, especially in terms of safety to give consumers a great guarantee, almost solve the electric vehicle has been plaguing people the most core security issues, and LYRIQ will soon be listed, consumers are within reach, I believe the future can be expected.