Car Review Observation "Car Review Society"

Foreword: As we all know, the three core components of pure electric vehicles are motors, batteries and electronic control technology. Simply put, the battery is the "heart" of a pure electric vehicle, providing stable power for the entire vehicle; the motor is the "trunk" of a pure electric vehicle, converting electrical energy into mechanical energy to drive the wheels; and the electronic control is the key component of a pure electric vehicle. The "brain" allows the entire vehicle to achieve optimal operating conditions.

The electric drive plays a decisive role

It is worth noting that if you want to connect the three, the participation of the electric drive is indispensable. In the process of the motor converting mechanical energy and electrical energy, Electric drive plays a key and pivotal role.

For car companies, electric drive systems can not only effectively control costs, but also improve the performance of the entire vehicle. It can be said to kill 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 capacity of new energy passenger vehicle drive motors in 2022, Fudi Power won the first place with 1,716,548 sets, followed by Tesla, Founder Motor with 506,789 sets, The results of 435,864 sets ranked second and third respectively, followed by Nidec, United Electronics, NIO Drive Technology, Shanghai Electric Drive, Shuanglin Motors, Inovance United Power, and CRRC Times Electric. It can be seen that in the above rankings, there are only two new energy vehicle manufacturers, Tesla and NIO Electric Drive Technology.

Compared with Tesla and NIO, there is actually another car company that has made certain progress in electric drive technology, and that is Aion.

As the first domestic car company to develop its own EV+ICV full stack, Aion not only independently developed magazine batteries, super speed batteries, and sponge silicon batteries, but also launched the "AEP3.0 platform" As well as Hyper Tec's new generation of high-end technologies such as "Protoss Architecture".

This time Aion has released a new generation of high-performance integrated electric drive technology - Quark electric drive, which bursts out the maximum power in the smallest volume and allows the chip industry to move from "28 nanometer" to " 3nm” era.

Quark electric drive takes it to the next level

So is Aian’s self-developed quark electric drive really that magical? Even catching up with Tesla?

First, let’s talk about the electric drive technology of Tesla models. It is understood that the Tesla Model S, which will be launched in 2021, is positioned as a high-performance model. At this time, high-power vehicle motors are not yet mature, while high-power induction motors are relatively mature and low-cost, and do not have the advantages of demagnetization at high temperatures. Therefore, instead of using a permanent magnet motor, an induction motor is used, but it still has certain disadvantages, such as large size and low efficiency. With the development of technology, the Model 3 was later launched in 2017. The car uses a permanent magnet synchronous motor. Its advantages are small and more compact, high efficiency and good for battery life. Based on this, the later Model Y also used a permanent magnet synchronous motor.

At present, Tesla has launched 5 motors in China. Model 3 and Model Y have changed from round wires to flat wires, and the power and torque of the motors have been improved.

On March 2, Tesla revealed its new progress in electric drive research and development at the Investor Day event, saying that it can achieve a 20% weight reduction, a 25% reduction in the use of rare metals, and a smaller volume. It has been reduced by 75%, rare earth materials are no longer used, and the use of silicon carbide is reduced by 75%. The cost can be saved by US$1,000. Compared to the fact that Aion made substantial progress in electric drive the next day and launched the Quark electric drive, Tesla's technology can be said to be a "futures" existence.

In the 10 years of development of the new energy vehicle industry, the power density of motors has increased from 2kw/kg to 6kw/kg. The Ionquark electric drive technology takes it to a higher level, directly increasing to 12kw/kg, taking the lead in breaking through Tesla's research and development in electric drive.

The biggest problem of the motor is power density. On the one hand, it is how to achieve the maximum power output while considering the same volume; on the other hand, it is to avoid high power output loss. If the power is increased, , and also generates heat, so this kind of research and development seems to be somewhat worth the loss.

What is Quark electric drive technology?

Understand the pain points of motors. Therefore, Quark electric drive technology is developed around the two core points of "high power density and low heat loss", resulting in nanocrystalline-amorphous super-efficiency motors. , X-PIN flat wire winding, 900V high-efficiency silicon carbide, E-drive software, non-power interruption electronic shifting and other new technologies. Among them, nanocrystalline-amorphous super-efficiency motors, X-PIN flat wire windings, and 900V high-efficiency silicon carbide have taken preliminary prototypes.

Nanocrystal-amorphous super-efficiency motor

Nanocrystal-amorphous super-efficiency motor can effectively improve the impact of motor core loss on motor efficiency. Through a "nanocrystalline-amorphous" material, the cooling rate is as high as 1 million ℃/s, which is 1,000 times faster than iron-based silicon steel materials. It has several times the microscopic characteristics of disordered atomic arrangement, no crystal grains, and no grain boundaries, to achieve reduction of 50% of the motor's core loss increases the motor's working efficiency to 97.5%, and the motor's maximum efficiency reaches 98.5%.

X-PIN flat wire winding

The X-PIN flat wire winding and carbon fiber high-speed rotor technology independently developed by Aian can increase the electric drive power while reducing the volume by 25%. More than 30%. In addition, X-PIN carbon fiber high-speed motor technology has three unique platform winding solutions, which can achieve a power range of 70kW-320kW and a torque range of 220-450N?m. It is compatible with multiple platforms.

900V high-efficiency silicon carbide

This technology combines the all-silver precise low-temperature sintering process to reduce the SiC module circuit noise by more than 50%, reduce the thermal resistance by about 25%, and increase the chip circulation capacity by 10 % or more, the power cycle life is increased by about 10%. Combined with SiC chip drive and protection, the Quark electric drive can achieve a maximum full-power operating voltage of 900V, a peak power of up to 320kW, and a maximum efficiency of over 99.8%.

Based on this technology, Aion’s Hyper SSR and Hyper GT models have reached the optimal state in terms of performance and space, allowing Aion Hyper SSR to achieve the world’s fastest motor acceleration of 1.9S to 100 kilometers. Hyper The GT achieves an acceleration of 4.9 seconds to 100 kilometers with a single motor.

Car Review Observation

From fuel vehicles to electric vehicles, the power components of the entire vehicle are changing subtly. Electrification is the future and the trend. The electric drive system has become the core component of the entire vehicle, and every new energy vehicle requires an electric drive system to achieve power output and control.

The emergence of electric drive electric systems brings the advantages of flexible control of working conditions, no noise and no environmental pollution, relatively high energy conversion rate, and is not affected by the external environment, regardless of the speed of the car. High or low, the electric drive system plays a good balancing role.

With the participation of Tesla, Weilai and even Huawei, CATL and other companies, it is not difficult to see that the electric drive track may be the next trillion-level industry. Fortunately, from the perspective of technology, From a perspective, Aian has already taken the lead.

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