Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizen Xiao Zhan for the clue delivery! CTOnews.com March 5 news, March 3, GAC Eian officially released a new generation of high-performance integrated electric drive technology-quark electric drive. CTOnews.com learned from the EAN official that the electric drive system has the characteristics of "small size and strong power". The power density of the motor is as high as 12kw / kg, which is 25% smaller than that of ordinary motors. at the same time, it further reduces the transmission loss and can output higher power. At the same time, the electric drive will be applied to the Ian Hyper SSR and Hyper GT models, which can achieve strong power performance of 0.100 1.9 seconds and 4.9 seconds, respectively.

In fact, the breakthrough of motor power density has always been a difficult problem. Engineers and scientific research institutions are committed to improving their power density.

In recent years, with the rapid development of new energy vehicle industry, the average motor power density of the industry has increased from 2kw / kg to 6kw / kg. With the emergence of Eian quark electric drive technology, the power density of the motor has been raised to 12kw / kg, achieving a new jump.

According to officials, the Eaan electric drive R & D team continues to iterate around the two core points of "high power density and low heating loss", thus accumulating a series of innovative technologies such as nanocrystalline-amorphous ultra-efficiency motor, X-PIN flat wire winding, 900V high efficiency silicon carbide, E-drive software, non-power interruption electronic shift, etc. The three core technologies are nanocrystalline-amorphous motor, X-PIN flat wire stator technology and 900V high efficiency silicon carbide technology.

Specifically, with the development of permanent magnet synchronous motor technology, the loss of motor core is the main factor affecting the efficiency of motor working conditions. Based on the basic raw materials and electromagnetic principles, the Ean Motor team redeveloped a "nanocrystalline-amorphous" alloy material and its batch preparation process. Compared with the traditional smelting process of iron-based silicon steel, the cooling rate of nanocrystalline-amorphous material is faster, and its iron loss coefficient is much lower than that of iron-based silicon steel and other electrical steel. Ean uses this material to make motor core, which can reduce the loss of motor core by 50%, effectively reduce the energy loss of motor, and improve the working efficiency of motor.

The X-PIN flat wire stator technology developed by Ian can increase the power of the motor by more than 30% while reducing the size of the motor by 25%. Based on the progress of motor technology, the future products will show the characteristics of miniaturization, lightweight, diversified travel forms and so on. X-PIN flat wire stator technology can achieve multi-platform compatibility and can be covered in the 70kW-320kW power range and 220-450Nm torque range.

At the same time, Ian is also involved in the construction of SiC industry chain. A breakthrough is made in four directions: chip layout, current-sharing consistency, reducing chip switch delay and stack power circuit design. Combined with the safe and reliable SiC chip driver and protection design, the silicon carbide has the characteristics of high withstand voltage, high power density and high efficiency, thus helping the quark electric drive to achieve full power working voltage up to 900V and peak power above 320kw.

Officials say that quark electric drive technology not only breaks through the contradiction between "strong power and small size". According to Ean, under the blessing of quark electric drive technology, the 0-100km / h acceleration time of its Hyper SSR is only 1.9 seconds, and the Hyper GT also has a zero acceleration capacity of 4.9 seconds.

Officials also say that quark electric drive is not only limited to cars, but also can be used in other fields. With its continuous evolution, it may be used in many high-precision fields, such as intelligent robot, mechanical exoskeleton, medical treatment, aerospace and so on.

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