As we all know, the three core components of pure electric vehicle are motor, battery and electronic control technology. Simply put, the battery is the "heart" of pure electric vehicles, which provides stable power for the whole vehicle; Motor is the "trunk" of pure electric vehicle, which converts electric energy into mechanical energy, thus driving the wheels; Electronic control is the "brain" of pure electric vehicle, which makes the whole vehicle reach the best running state.
Electric drive plays a decisive role.
It is worth noting that in order to connect the three, it is essential to participate in electric drive, which plays a key and decisive role in the conversion of mechanical energy and electric energy by motors.
For car companies, the electric drive system can not only effectively control the cost, but also improve the performance of the whole vehicle, which can be described as killing two birds with one stone. Therefore, many car companies have invested in the research and development of electric drive systems.
According to the survey, among the TOP 10 installed motors of new energy passenger cars in 2022, Foday Power ranked first with 17 16548, followed by Tesla and Founder Motors with 506,789 and 435,864 respectively, and the rest were driven by Nippon Electric, United Electronics and Weilai. It can be seen that in the above rankings, only Tesla and Weilong electric drive technology are new energy vehicle manufacturers.
Compared with Tesla and Weilai, there is actually another car company that has made progress in electric drive technology, and that is Ai 'an.
As the first EV+ICV full-stack self-developed vehicle enterprise in China, Ai 'an not only independently developed magazine batteries, ultra-fast batteries and sponge silicon batteries, but also launched a new generation of high-end technologies such as AEP3.0 platform and Spirit architecture.
This time, AEON released a new generation of high-performance integrated electric drive technology-quark electric drive, which can maximize power with the smallest volume and make the chip industry enter the era of "3 nanometers" from "28 nanometers".
Up a flight of stairs, driven by quark electricity.
So is the quark electric drive developed by Ian really that amazing? Even more than Tesla?
Let me talk about the electric drive technology of Tesla models first. It is understood that the Tesla Model S listed in 202 1 has high performance positioning. At this time, the high-power vehicle motor is still immature, while the high-power induction motor is relatively mature, with low cost and no advantage of high-temperature demagnetization. Therefore, induction motor is used instead of permanent magnet motor, but it still has some disadvantages such as large volume and low efficiency. With the development of technology, 20 17 introduced type 3. The car adopts permanent magnet synchronous motor, which is small, compact, efficient and has good endurance. Based on this, the later Y-type also adopted permanent magnet synchronous motor.
At present, Tesla has launched five motors in China. Model 3 and Model Y changed from round wire to flat wire, and the power and torque of the motor were improved.
On March 2nd, Tesla revealed its new progress in electric drive research and development on Investor Day, claiming that it can reduce the weight by 20%, the use of rare metals by 25% and the volume by 75%. It will no longer use rare earth materials, and reduce the use of silicon carbide by 75%, saving 65,438 US dollars+0,000 US dollars. Compared with the quark electric drive that made substantial progress the next day, Tesla technology can be said to be the existence of "futures".
In the 10 year of the development of new energy automobile industry, the motor power density has increased from 2kw/kg to 6kw/kg. The by of AEON quark electric drive technology is directly upgraded to 12kw/kg, which is Tesla's first breakthrough in electric drive research and development.
The biggest problem of motor is power density. On the one hand, how to achieve maximum power output under the condition of constant volume; On the other hand, it is to avoid high power output loss. If heat production is formed on the premise of improving power, then this kind of research and development seems to be a bit deficient.
What is quark electric drive technology?
Knowing the pain point of the motor, quark electric drive technology is developed around the two core points of "high power density and low heating loss", and new technologies such as nanocrystalline-amorphous ultra-efficient motor, X-PIN flat wire winding, 900V high-efficiency silicon carbide, E-drive software and electronic gear shifting without power interruption have emerged. Among them, nanocrystalline-amorphous ultra-efficient motor, X-PIN flat wire winding and 900V high-efficiency silicon carbide have begun to take shape.
Nanocrystalline-amorphous ultra-efficient motor
Nanocrystalline-amorphous ultra-efficient motor can effectively improve the influence of motor core loss on motor efficiency. Through a kind of "nanocrystalline-amorphous" material, the cooling rate is as high as 1 10,000 ℃/s, which is 1 10,000 times faster than that of iron-based silicon steel material, and several times higher than the microscopic characteristics of disordered arrangement of atoms, no grains and no grain boundaries, the iron core loss of the motor is reduced by 50%, the working efficiency of the motor is improved to 97.5%, and the highest efficiency of the motor is 98.5.
X-pin flat wire winding
The X-PIN flat wire winding and carbon fiber high-speed rotor technology independently developed by Ai 'an can reduce the volume by 25% and increase the electric driving power by more than 30%. In addition, X-PIN carbon fiber high-speed motor technology has three unique platform winding schemes, which can realize 70kW-320kW power range, 220-450N? M torque range multi-platform compatibility.
900 volt high efficiency silicon carbide
Combined with all-silver precision low-temperature sintering process, this technology can reduce the circuit inductance of SiC module by more than 50%, the thermal resistance by about 25%, the chip cycle capacity by more than 10%, and the power cycle life by about 10%. Combined with the drive and protection of SiC chip, quark electric drive can achieve a full-power working voltage of up to 900V, with a peak power of 320kW and a maximum efficiency of over 99.8%.
Based on this technology, the performance and space of Ai 'an Hyper SSR and Hyper GT models have reached the optimal state, enabling Ai 'an Hyper SSR to achieve the world's fastest motor acceleration of 1.9S, and Hyper GT to achieve a single motor acceleration of 4.9s..
Car review observation
From fuel vehicles to electric vehicles, the power components of the whole vehicle are changing imperceptibly, and electrification is the future and trend. Electric drive system has become the core of the whole vehicle, and every new energy vehicle needs electric drive system to realize power output and control.
The emergence of electric drive power system has brought the advantages of flexible working condition control, no noise and no environmental pollution, high energy conversion rate and no influence from external environment. No matter whether the speed of the car is high or low, the electric drive system can play a good balance role.
With the participation of Tesla, Weilai and even Huawei, Contemporary Ampere Technology Co., Ltd., it is not difficult to see that electrically driven crawler will be the next trillion-dollar industry. Fortunately, from a technical point of view, AEON has already got ahead of us.
This article comes from the car review society, the author of the car number, 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.