Just after Musk finished speaking, on March 3, Ai 'an also held a new generation of high-performance integrated electric drive technology-quark electric drive.
What flowers can the motor play with? Quark electric drive, there are two key words worthy of attention, "high performance" and "integration".
Performance aside, let's talk about integration first. I believe that many people who know the mechanical industry, or the small partners in the electric drive system industry, will know that the higher the system integration, the more it can reduce the waste of internal space and make the system more complete.
At present, in the electric drive system, the motor is the driving unit of the electric drive system. Motors are widely used, from balance cars and razors that are common in life to "national heavyweight" aircraft carriers. Due to the wide range of application scenarios, the progress of technology is particularly important. Breakthrough and continuous breakthrough are also the only way for technological development.
We often hear about the "energy density" of power batteries. In fact, the motor also has its own density unit-power density. Undoubtedly, under the condition that the "weight" and "volume" of the motor are fixed, the power density of the motor can be improved by continuously increasing the power.
At present, in the electric vehicle industry, the power density of general motors has increased from 2kW/kg before 10 to 6kW/kw at present. At present, many power motors are equipped with 120kW-200kW to 200kW motors. If the power density is increased, it will not only bring good weight reduction effect to the car body, but also further improve the space utilization.
According to official data, the power of the motor can be increased from the current mainstream 6kW/kg to 12kw/kg, a double increase. Especially, the electric drive system of Quark 900V voltage system is compared with Tesla 400V voltage system in volume.
After integration, let's talk about performance. After all, as I said just now, the mainstream motor in the electric vehicle industry is only 120kW-200kW, and even some vehicles with stronger performance use more motors. In fact, at the beginning of the establishment of the Tesla brand, the Roadster model was forced to adopt the "electric drive gearbox" because of the compromise of power and density, but later the motor technology became more and more developed, so in terms of power and density,
The quark electric drive system released by Ai 'an this time has made a brand-new development in internal basic raw materials and electromagnetic principle innovation, and designed "nanocrystalline-amorphous" alloy materials and batch preparation technology, which reduced the intimate loss of the motor by 50% and improved the motor efficiency to 98.5% at the highest. Combining the self-patented X-PIN flat-wire stator technology and carbon fiber high-speed rotor technology, due to the highly integrated characteristics, the electric drive power can still be improved while reducing the volume.
According to the official description, the palm-sized motor is comparable to the V8 engine, so I am looking forward to the real performance after mass production and loading.
The "foundation" of 900V high-voltage platform after the fire of 800V high-voltage platform, the author analyzes the SiC of 800V power module, that is, the silicon carbide module, and tells why 800V needs to be upgraded from IGBT to silicon carbide module. The main reason is that the voltage is increased, and rare earth materials with better conductivity and heat resistance are needed. Silicon carbide is an excellent raw material for 800V platform at present.
This time, Aian launched a 900V high-voltage platform, deeply participated in the construction of SiC industrial chain, and independently developed packaging design. According to the current official data, Aeon can reduce the loop inductance of SiC module by more than 50%, reduce the thermal resistance by about 25%, improve the chip current capacity by more than 10%, and improve the cycle life of power supply by about 100%.
Maybe many people don't understand so many technical terms. Simply put, the performance of the SiC power module can be improved through package optimization and re-optimization.
Relying on the background of "high integration" and "high performance" of quark electric drive system, and with the high transmission capacity of SiC module of Ai 'an 900V platform, Ai 'an Hyper SSR and Hyper GT can achieve better performance and space experience. According to official data, Hyper SSR can achieve multi-motor acceleration of 1.9 seconds at the earliest. I guess the multi-motor here should be 3 motors with high probability. Even a 4-motor system, and Hyper GT can achieve the fastest single-motor acceleration of 4.9 seconds, with stronger power. It needs the absolute power output of a single motor to accelerate 100 kilometers in 5 seconds.
In the end, the progress of each brand in the industry, technology is the most solid and important development path. This time, Aian once again ushered in breakthroughs in the fields of electric drive and electronic control, which really played a key role in the development of the next era.
However, the author believes that many of Ai 'an's technologies have not been officially mass-produced, nor have they been put on production cars to give users a real experience. Therefore, it is imperative to "realize" the "idealized" technology as soon as possible, which is the best example for the industry. Personally, I am looking forward to the future products of Ai 'an Hyper series. We will wait and see.
This article comes from the automobile field of the author Che Yi, 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.