Analyzing the Development Direction of Automotive Power System Technology

On June 12th, the 17th International Automotive Powertrain Technology Conference (TMC 2025) opened in Nantong, with technological breakthroughs in China's new energy vehicles becoming the focus. From a hybrid thermal efficiency of 46% to a 50% increase in power density of silicon carbide controllers, China is reshaping the global automotive industry with three major innovations.

The First Arrow: System Integration Revolution

The traditional "three major components" have been upgraded to "X-in-1":

The "three in one" combination of motor, electronic control, and reducer has become mainstream.

The latest "seven in one" integrated battery management, charging, distribution and other modules.

Reduce volume by 40%, reduce wiring harness by 60%, and double power density.

Second Arrow: Breakthrough in Material Technology

Silicon carbide devices: enabling motor controller efficiency to exceed 99%.

Flat wire motor: Increases power by 30% for the same volume.

3D printed bearings: 25% lighter but more impact resistant.

Third Arrow: AI Intelligence Empowerment

Millisecond level torque distribution: 50% improvement in wet and slippery road stability.

Intelligent thermal management: Increases winter battery life by 15%.

Scene recognition: Automatically switch between mountain/highway mode.

Challenge and Breakthrough

High voltage conversion: The 800V platform requires insulation materials to have a voltage withstand level three times higher, and oil cooling technology has become a new standard.

Distributed drive: Wheel hub motors have not yet become popular due to quality issues under the spring, but Schaeffler has already mass-produced commercial vehicle wheel hub motors with a torque of 2000N · m.

Future prospects

Changan Automobile's Liu Bin pointed out three major trends:

Electrification and popularization: The acceleration experience of 300000 level luxury cars will be reduced to 150000 level models.

System reconstruction: Control drive separation+software hardware decoupling, reducing the research and development cycle by 40%.

Ecological integration: cross domain collaboration of power, chassis, and intelligent driving, achieving a 20% increase in "home acquisition rate".

From a "follower" to a "definer", China's new energy vehicles are using systematic innovation to provide a "Chinese solution" for the low-carbon transformation of the global automotive industry.