What are the components of an electric vehicle powertrain system?
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Electric vehicle powertrain systems include fuel cell engines, electric vehicle battery systems, onboard hydrogen supply systems, power supply systems, electric drive systems, and powertrain control systems. Below is an introduction to the electric power system: Components of the electric power system: Pure electric vehicles consist of three main parts: the electric drive system, the power source system, and the auxiliary system. The electric drive system includes the controller, power converter, electric motor, mechanical transmission device, and wheels. The electric motor functions similarly to an engine in traditional vehicles, primarily converting the electrical energy stored in the power battery into kinetic energy to drive the wheels under the driver's control, or converting the kinetic energy from the wheels back into electrical energy during braking to achieve energy recovery. The controller acts like the nervous system of the human body, coordinating the control of various subsystems through a vehicle control system to achieve optimal performance. The power source system includes the battery pack and battery management system (BMS). The auxiliary system includes the auxiliary power source, power steering system, air conditioning unit, lighting devices, etc. Operation process of the powertrain system: Based on signals from the brake pedal and accelerator pedal, the electronic controller issues corresponding control commands to regulate the electric motor and manage the power flow between the motor and the power source. The auxiliary power supply system primarily provides power for power steering, air conditioning, braking, and other auxiliary devices. In addition to input signals from the brake and accelerator pedals, the steering wheel input is also a crucial signal, as the power steering system determines the vehicle's steering flexibility based on the steering wheel's angular position.
