Fifth, the mileage of passenger cars is much longer than that of cars, which is basically 4 to 6 times, including the corresponding life requirements.
Sixth, from the perspective of product development cycle, the development and verification cycle required by the passenger car market is often short; and as the car motor controller, its development verification cycle tends to be relatively long.
Speaking of the national motor level in China, I will give a picture here. These data should be data in recent years. There are domestic levels, as well as the level of similar foreign products seen in the market. The common feature of these motors is that the speed is relatively high, and the power is also found to be similar, including voltage and cooling. From the indicators of domestic and foreign drive motors, generally speaking, the torque density and power density, in fact, whether it is the corresponding effective weight or total weight of the motor, are at a considerable level. In order to promote the development of the drive motor industry, our country has also put forward requirements for the power density of the motor. By 2020, it is 4kWlkg, which is the product grade. At present, some individual products of some enterprises can achieve such a level, but overall we are now at the product level of 3.2~3.3kW/kg; by 2020, I think 4kW/kg is entirely possible. We also mentioned torque density. Torque density is relatively difficult for high-speed motors. Therefore, the torque density is lower than that of passenger cars. However, if we compare with similar motors in foreign countries, we should It also belongs to a considerable level.
From the motor controller, it is also the power density. Of course, the power density is an external indicator. In fact, it is closely related to the power module and the power module package. Therefore, we see that the power density of our current product-level is also corresponding to the foreign packaged motor controller. Some gaps. As I have just said, comparing our level two or three years ago, our own progress is also very big.
Here I have listed some of the motors and controllers that have been applied in batches on the market today, including the application of cars and buses. Overall, the progress of our domestic drive motors and controllers is very fast, as in the first According to a report from Director Wang, our national bus, regardless of the level of the whole vehicle or the level of parts and components, should be said to be at the leading level internationally.
On the right are a few examples of what we have in terms of materials and devices for vehicles from 2016 to the present. For example, the material of silicon steel in our motor, mainly used Japanese silicon steel materials in the past few years. After our domestic research and development and experiments like Baosteel and Wuhan Iron and Steel (now merged into Baowu Group), most of the domestic drive motors are now domestic. Silicon steel.
There are also power modules, we talk about power electronics has always been a bottleneck restricting the development of our domestic motor controllers. After working with semiconductor manufacturers, we will benchmark and develop automotive-grade power devices. At present, there are two or three semiconductor packaging companies in China that can make devices that can be applied in batches. What are the benefits? It can significantly reduce the procurement cost of our power devices, and in terms of international competition, our bargaining power has increased because of our ability to have independent products in China. In addition to power devices, including capacitors, position sensors, wiring harnesses, etc., are some of the results of our alliance.
Here also mentions our country's support for the drive motor industry. Here I mention two: First, Made in China 2025, Made in China 2025, Director Xiao mentioned 7+1, the drive motor is in new energy vehicles, energy-saving cars, cars. Manufacturing three areas is a very important part.
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