Domestic electric vehicles face the risk of "hollowing" of key components

Recently, the development of domestic electric vehicles is unstoppable, in terms of motor drive and control system, some components and technologies have been localized, and have a number of independent property rights
.
However, it still faces the risk of "hollowing" of core key devices, and key devices and materials such as IGBT (insulated-gate bipolar transistor), chips, film capacitors, and high-performance magnets mainly rely on foreign technology and resources
.

It is understood that there is still a certain proportion of gap between the peak power density of domestic motors and controller power density and international benchmark products, and there is still a certain distance
from the integrated integration ability of motor, gearbox and high-voltage controller.

Gong Jun, motor responsibility expert of the overall group of the national 863 plan for energy-saving and new energy vehicles, and general manager of Shanghai Electric Drive Co.
, Ltd.
, said, "Many domestic enterprises still need to import
key power electronic components urgently needed for production.
”

"Taking the shaft connected to the motor as an example, the company needs to invest more than 20 million yuan to buy equipment from Germany to produce
it.
" The chairman of a well-known domestic motor manufacturer said
.

At the same time, in various precision equipment such as high-speed motor reduction gears and high-speed precision bearings, enterprises must also introduce technology or equipment
from abroad.
"Our own production enterprises in China, such as some auto parts joint ventures, are 'cash registers' plus 'anesthetics', and multinational car companies let them build what they want, without mastering the core technology
.
" A veteran of the new energy vehicle industry said
.