Motor, we often come into contact with, whether it is the four-wheel drive we played as a child, today's drones, or the "national heavyweight" aircraft carrier, space exploration and other high-tech fields, the motor plays an indispensable role, but no matter which industry, it is actually pursuing the motor of "miniaturization and huge power". It can be said that motor technology is a history of constantly pursuing the ultimate power density.
But technically, the breakthrough of motor power density has always been a world-class problem. If you want to break through the power density, you will face two world problems:
(1) How to achieve greater power output under the condition of constant volume should be considered.
Simply put, it is to compress the space limit of the motor so that every point of the motor can release the maximum potential. At the same time, the power can be increased by increasing the voltage. But every voltage increase of 1V is a series of system-level projects, involving materials, technology, software, packaging, safety and so on.
(2) Avoid high power output loss and try to avoid wasting on the useless work of generating heat.
It is understood that the industrial motor power density has increased from 2kw/kg to 6kw/kg, and it has been used for 10 years with the rapid development of new energy automobile industry. With the emergence of quark electric drive technology, the power density of the motor is directly increased to 12kw/kg.
The reason why quark electric drive technology can be used in Ai 'an to improve the power density of the motor from 6kw/kg to 12kw/kg is undoubtedly the technical achievement of the electric drive R&D team in the field of power technology for more than ten years, and such a leap-forward improvement is mainly due to a series of innovative 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.
As one of the three core technologies of quark electric drive, the "nanocrystalline-amorphous" ultra-efficient motor, based on the basic raw materials and electromagnetic principles, Ai 'an Electric team innovatively developed the "nanocrystalline-amorphous" alloy material and its batch preparation process. Compared with the traditional smelting process of iron-based silicon steel materials, the cooling rate of nanocrystalline-amorphous materials is as high as 1 10,000 ℃/s, which is 1 10,000 times faster than that of iron-based silicon steel materials. It has the microscopic characteristics of disordered arrangement of atoms, no grains and no grain boundaries. Its iron loss coefficient is much lower than that of iron-based silicon steel and other electrical steels. Aeon innovatively applied this material to make motor iron core, which reduced the loss of motor iron core by 50%, thus effectively reducing the energy loss of motor, improving the working efficiency of motor to 97.5% and the maximum efficiency of motor to 98.5%.
In addition, AEON combines the patented X-PIN flat wire stator technology and carbon fiber high-speed rotor technology, which can reduce the volume by 25% and increase the electric driving power by more than 30%. Based on the progress of motor technology, future products will be miniaturized, lightweight and diversified. X-PIN carbon fiber high-speed motor technology has three national patents and a unique platform winding scheme, which can realize multi-platform compatibility in the power range of 70kW~320kW and the torque range of 220~450Nm.
The last item, "the world's highest 900V silicon carbide power module", is the packaging design independently developed by Ai 'an deeply involved in the construction of SiC industrial chain. Breakthroughs have been made in four directions: chip layout, current sharing consistency, reducing chip switching delay and design of laminated power supply circuit. At the same time, combined with the innovation of all-silver precision low-temperature sintering process, the circuit inductance of SiC module is reduced by more than 50%, the thermal resistance is reduced by about 25%, the chip current capacity is increased by more than 10%, and the power cycle life is increased by about 100%.
Combined with the safe and reliable driving and protection design of SiC chip, the characteristics of high withstand voltage, high power density and high efficiency of SiC are fully exerted, which helps quark electric drive to achieve the highest full-power working voltage of 900V, with the peak power exceeding 320kw and the highest efficiency exceeding 99.8%, ranking the top level in the industry.
This quark electric drive broke through the contradiction of "large power and small size" for the first time, which made the research and development of Ai 'an electric drive enter the "nano age" and set a new milestone for the research and development history of Ai 'an electric drive technology. As the first EV+ICV independent research and development vehicle enterprise in China, AEON has achieved a number of technological breakthroughs. Not only independently developed three original battery technologies, namely magazine battery, super-fast battery and sponge silicon battery, but also solved the pain points of the three major industries in one fell swoop, and introduced a new generation of high-end technologies such as AEP3.0 platform and Spirit architecture.
Recall that four years ago, Aian and Tesla were one of the few car companies with pure electric platforms. Last year, Aian released a new generation platform AEP 3.0, and this year's Investor Day, Tesla promised a new generation platform. The ticket jumped again. Although Musk released the third chapter of the secret grand plan, the share price fell all the way during the event. The reason is that Tesla's ideal is grand but the details are insufficient, and it is just drawing cakes, but it is not supported by enough new technologies.
The grand narrative with Tesla lacks details, and the real breakthrough of quark electric drive technology is also the embodiment of Ai 'an's down-to-earth investment in technology. With the emergence and continuous evolution of quark electric drive technology, people have more imagination space for the future automobile form. Of course, it is not limited to cars. In the future, it may be applied to intelligent robots, mechanical exoskeletons, medical care, aerospace and other high-precision fields to make high-performance machinery portable.
Write to the end:
It must be said that quark electric drive starts with the details of the electric drive system, and a series of technical breakthroughs, such as nanocrystalline-amorphous ultra-efficient motor, X-PIN flat wire winding, 900V high-efficiency silicon carbide, e-drive software, unpowered electronic gear shifting, etc. , so that the electric drive breaks through the contradiction of "big power and small size", so that the Aian Hyper SSR realizes the world's fastest multi-motor acceleration of 1.9 seconds. On the whole, the advent of quark electric drive can be regarded as a microcosm of the rapid development of new energy technology in China. I believe that more independent new energy technologies will come out in the future, and the future new energy automobile industry is worth our expectation.
This article comes from the author Hao, 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.