In the era of fuel vehicles, the core of building competition barriers for major car companies is three parts, especially engine technology, and multi-cylinder and large displacement are regarded as the embodiment of the strength of car companies, but this situation has been broken by the new energy era. Compared with the past three parts, Sanpower technology has lower competition barriers, which also provides opportunities for domestic independent brands to overtake in corners. On March 3rd, GAC Aian officially released a new generation of high-performance integrated electric drive technology group-quark electric drive, which is the ultimate pursuit of "28-3 nanometer chips". Can a palm-sized motor output more horsepower than a V8 engine? Gac ean amplifier recruited
quark electric drive, which can generate more powerful power in generate with a very small volume. According to the data, the motor power density can be as high as 12kw/kg, which is 1% higher than the industry's 6kw/kg. Higher motor power density can bring more powerful output to quark electric drive, and achieve power performance beyond V8 with a palm-sized volume. The introduction of new technology can also be regarded as the different development direction between Aeon and Tesla. On the just-concluded Tesla Investment Day, Tesla officially announced a new generation of self-developed electric drive system, which focuses on further cost reduction by reducing materials such as silicon carbide, which is obviously different from Quark Aeon's emphasis on performance.
looking at the development history of automobile motor, its application is not limited to the field of electric vehicles. From unmanned aerial vehicles to aircraft carriers and spaceships, motors have played an important role, and the improvement of power density is always the focus of pursuit, but how to further achieve breakthroughs is a world problem, and countless engineers have not stopped their research and development. If we trace back to the history of small-volume motors, in 19, Porsche introduced a model using small-volume hub motors. However, due to the lack of power density at that time, the top speed of the car could only reach 35 km/h.
there are two main difficulties in improving power density. First of all, how to achieve greater power output while keeping the volume unchanged. As we all know, in order to further tap the performance of the motor, it is necessary to achieve higher integration in a limited space, so that every point can release the maximum potential. At the same time, the power can be further improved by pressurization, but this brings greater technical difficulties to research and development. After all, every voltage increase of 1V will put forward greater requirements for materials, processes, software, packaging and safety.
at the same time, in order to further reduce the loss under high power output, the technical requirements are higher. By comparing the quark electric drive of Ai 'an with the electric drive of Tesla, we can find that the output point of quark electric drive is only 2% better, and the voltage system reaches 9V, while the output loss of Tesla's motor is 4%, and the voltage system is 4V V. From the aspect of loss alone, quark electric drive wins completely.
the reason why quark electric drive can make such great progress is mainly related to its three pioneering technologies, which have also led to new changes in drive mode. The electric drive R&D team of Ai 'an has been deeply involved in the field of power technology for more than ten years, and its R&D strength can't be underestimated in China. In view of the two core difficulties of small-volume motor "high power density and first heating power consumption", three forward-looking technologies, namely "nanocrystalline-amorphous super-efficiency motor", "X-PIN flat wire winding" and "9V silicon carbide power module", were finally introduced, thus promoting the successful application of quark electric drive.
First, let's take a look at the "nanocrystalline-amorphous" super-efficiency motor. In order to reduce the influence of motor loss on sales under working conditions, the motor team of Ai 'an abandoned the traditional smelting process of iron-based silicon steel materials and designed a "nanocrystalline-amorphous" alloy material and its preparation process. Its cooling rate is as high as 1 million ℃/s, 1 times faster than that of iron-based silicon steel materials, and its iron loss coefficient is much lower than that of iron-based. Ai 'an innovatively applied this material to make motor iron core, which reduced the motor iron core loss by 5%, thus effectively reducing the motor energy loss. The working efficiency of the motor was improved to 97.5%, and the highest efficiency of the motor reached 98.5%.
The improvement of rotor technology is also an important means to increase the motor power. The technical team of Ai 'an has developed X-PIN flat-wire stator technology and carbon fiber high-speed rotor technology by integrating independent patent design. According to the official introduction, the electric drive power has increased by more than 3% under the condition of reducing the volume by 25%. X-PIN carbon fiber high-speed motor technology has three national patents with unique platform winding schemes, which can realize multi-platform compatibility in the power range of 7 kW-32 kW and the torque range of 22-45 nm.
In addition, the power density can be further improved by increasing the voltage. With the continuous development of silicon carbide technology, the Ai 'an team has also been deeply involved in the construction of silicon carbide industrial chain, and achieved breakthroughs in four directions, including layout, packaging and circuit design. Together with the innovation of all-silver precision low-temperature sintering process, the circuit inductance of silicon carbide module is reduced by more than 5%, the thermal resistance is reduced by about 25%, the chip current capacity is improved by more than 1%, and the power cycle life is prolonged by about 1%. With the help of quark electric drive, the highest full-power working voltage is 9V, the peak power is above 32kw, and the highest efficiency is over 99.8%, ranking the top level in the industry.
Summary
With the advent of the quark electric drive, the team in Ai 'an has given people a broader imagination for the future development of automobiles. With the application of the quark electric drive in wheel-hub motors, automobiles may really be able to easily turn in place and stop in translation as imagined in movies. In addition, the application field of the quark electric drive is not only reflected in automobiles, but also can help the rapid development of other fields with the unlocking of more scenes.
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