In the era of new energy vehicles, in addition to intelligent configurations, we are concerned about the safety and range of the battery is often closely related to the battery, so the major automotive companies are pouring a lot of effort on battery technology.
On the power battery we can often hear companies in the publicity of a variety of names, such as Kirin batteries, blade batteries, Dayu batteries, magazines and so on. In order to further prove the safety of their own batteries, the major car companies have also been staged a variety of violent means of testing, fire and flooding, pinprick, extrusion, falling from a height, and other means of fancy, but basically stay in the "cold war era", the recent EA successfully advanced the battery safety testing to the The company's newest product, the "Hot Weapon Era", is the first of its kind in the world to be released.
In the new energy automobile brand, EA has always been a "live" master, the magazines battery 1.0 era of pinprick experiments so that we can see for the first time EA in the level of battery safety, magazines battery 2.0 EA used a more exaggerated gunshot experiment, so that the user a more intuitive feeling of battery safety. Battery whole pack gunshot does not catch fire, seemingly simple conclusion behind its technical difficulty is self-evident, so how does AAN solve these problems?
Severe gunshot test, magazine battery 2.0 smooth over
Different from the pinprick test, when the bullet penetrates the battery cell, the speed can be up to 975,000 times that of the pinprick, and the diameter of the incision is 7-8 times that of the pinprick, the internal structure of the battery is inevitably destroyed in extreme environments such as multiple-cell short circuits, burst damage, and so on, and the high temperature of the moment of penetration all makes the battery more stable. The high temperatures at the moment of breakdown multiply the possibility of a battery fire.
Before the Magazine Battery 2.0 shooting experiment, manufacturers first conducted shooting experiments on the industry's mainstream lithium iron phosphate single cell and lithium iron phosphate module, even though the safety of the more outstanding lithium iron phosphate batteries also appeared to be obvious thermal runaway and burning phenomenon. The result proves that it is difficult to ensure absolute safety by relying only on the structure of the battery itself, and that effective intervention must be carried out within the battery pack to ensure the overall safety of the battery pack.
The next gunshot experiment, the shooting object became the magazine battery 2.0, the same conditions under the magazine battery 2.0 the whole package withstood the test, did not occur fire and explosion. Subsequently, the staff disassembled the battery system shell, showing that the overall internal structure of the battery pack is intact, only three cells burst damage, the temperature returned to room temperature after 24 hours of rest, successfully passed the gunshot test.
Multiple Protection from the Inside Out, Making Battery Safety Go Further
Behind the outstanding safety of the Magazine Battery 2.0 is the focus of EVA's many years of persistence in battery research and development, with engineers upgrading a number of technologies on top of the Magazine Battery 1.0. Firstly, the engineers started from the inside of the Magazine Battery 2.0, and developed the "Ultra-stable Electrode Interface" technology, which greatly increases the toughness of the electrode interface through the nano-ceramic material with ultra-high stability and ultra-high heat resistance.
At the same time, the core also utilizes a composite fluid collector material that quickly collapses when heat gathers, avoiding thermal runaway caused by a continuous short circuit. Additionally, the electrolyte contains an oxidation-resistant flame retardant, which, when activated at high temperatures, captures the free radicals of the combustion reaction and eliminates the conditions for sustained combustion. With the triple-technology protection, the heating rate of the battery cell can be reduced by 20% even if thermal runaway occurs.
After solving the internal problems, EA also cooperated with China Aerospace to develop a heat-resistant phase-change material that has the dual functions of heat insulation and phase-change heat absorption. To put it plainly, this kind of material is more capable of absorbing heat, and can also maximize the maintenance of their own temperature does not appear too big change, proper black technology. Together with the mesh nano-insulation material, the overall thermal insulation performance is greatly improved by 40%. In addition, Magazine Battery 2.0 utilizes a dual-layer cooling system, whereas previous battery packs often only had a top and bottom layer of cooling, Magazine Battery 2.0 utilizes a dual-layer cooling system, which naturally improves the cooling efficiency of the battery pack.
In addition to the above conventional means, Eyen has also come up with a cell fire suppression system for the Magazine Battery 2.0. It utilizes a low-melting-point alloy to form a fire-extinguishing chamber, which enables storage of extinguishing agent, self-location of thermally runaway cells, and spot spraying on a very small height space. This is very much like the fire sprinklers in our hotel apartments, which automatically extinguish the fire when triggered by a smoke sensor, which is equivalent to arranging a "fire department" inside the battery pack.
Finally, in terms of the battery management system, the cloud-based battery management system developed by Eon based on big data and AI technology has evolved to the sixth generation, and Eon has accumulated a large amount of full life cycle application data due to its outstanding market sales. Therefore, once the battery pack has self-discharge abnormality, cooling abnormality, electrical connection abnormality, hidden insulation failure and other faults, the system has the ability to quickly identify them, preventing the problem before it "ignites". It is a series of technology stacking from inside to outside, from hardware to software, that makes the comprehensive thermal runaway management capability of Magazine Battery 2.0 increase by 5 times, which can resist the impact of thermal runaway of multiple batteries at the same time, and remain stable even in the face of gunshot experiments.
Summary:
From the core triboelectric technologies such as Magazine Battery Series, Super Speed Battery, Sponge Silicon Negative Cell Battery, Microcrystalline Lithium Iron Battery, Quark Electric Drive, and last year, EA released the industry-leading AEP3.0 Purely Electric Proprietary Platform and the Starling Electronic and Electrical Architecture, and invested in the ICV field to create the ADiGO Smart Driving Connected Ecosystem. With the continuous emergence of technological research and development results, AAN has not only steadily ranked first in the market in terms of sales volume, but has also been highly favored in the capital market, with AAN topping the Forbes Global Unicorn List in 2022 in various dimensions. In the future, with the application of various types of technology, EA will become the representative brand of China's new energy automobile technology stream.
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