The electric drive system of electric heavy-duty trucks usually consists of the following parts:

1. Motor: The motor is the core component of the electric drive system for heavy-duty trucks, responsible for converting electrical energy into mechanical energy to drive the vehicle.

2. Motor controller: The motor controller is the control center of the electric heavy-duty truck electric drive system, responsible for controlling the speed and torque of the motor to achieve vehicle acceleration, deceleration, and driving.

3. Transmission: The transmission is an important component of the electric heavy-duty truck electric drive system, responsible for transmitting the torque output by the motor to the wheels to achieve vehicle operation.

4. Battery: The battery is the energy supply component of the electric heavy-duty truck electric drive system, responsible for storing electrical energy and providing power to the motor.

5. Charging system: The charging system is an important component of the electric heavy-duty truck electric drive system, responsible for charging the battery to ensure its endurance.

6. Data acquisition and monitoring system: The data acquisition and monitoring system is an important component of the electric heavy-duty truck electric drive system, responsible for collecting and monitoring various data of the electric heavy-duty truck, including battery status, motor status, vehicle driving status, etc., to achieve remote monitoring and diagnosis of the vehicle.