what is the core technology of the new energy electric drive system ?

The electric drive system mainly consists of the motor, the motor control unit, and the reducer.

People’s core needs for the power unit are no more than:

① Fast response and powerful power;

② High efficiency and low energy consumption;

③ Low failure rate, ruggedness, reliability.

There are more potential needs:

① High integration degree to leave more space for the car and the trunk;

② Reasonable cost (ultimately reflected in the car price);

①     No annoying whistling at high speeds.

In the most important “power” attribute of the electric drive, most electric cars currently have excessive power. For example, the Model 3P of Tesla with a power of 36w+ can beat 200w+ performance gasoline cars in acceleration. The MiniEV of Great Wall with a power of 3w can even start and accelerate more directly than many gasoline cars.

In other words, the motor power of electric cars is currently sufficient, and the premium for high horsepower in traditional gasoline cars has become worthless in electric cars. The high-power density motors listed above give people the feeling that the horsepower of electric cars is given away…

Car manufacturers would do better to spread the cost of the current overwhelming motor power to other parts where users can feel the benefits, rather than spending a lot of money on research and development of new power platforms to improve power parameters.

Of course, for a few performance electric cars that pursue absolute power and acceleration, such as the Model S Plaid of Tesla, the Lucid Air sapphire, the Hummer EV, and the Porsche

Taycan TurboS, there are some new key technologies to improve power:

For example, flat winding coil winding, end position exchange to improve the filling rate of the groove, optimization of the rotor structure, etc., to further improve the motor power and power density.

In recent years, more and more models have been equipped with cascade oil cooling motors, which can cool and lower the temperature of the motor more efficiently, helping to continuously output power without degradation.

There are also models that optimize the motor power output through.