Analysis of AEAUTO Commercial Electric Vehicle Powertrain system
The powertrain system of electric vehicles refers to the device that provides running power for electric vehicles. It consists of the motor, the battery and the motor controller. AEAUTO one-stop system is proved by customers all over the world.
1. Drive motor system
Motor type and characteristics:
Permanent magnet synchronous motor: widely used, with advantages such as high efficiency, high power density, and good torque characteristics. It is more common in new energy commercial vehicles in medium and low speed operation scenarios. AC asynchronous motor: used in some commercial vehicles that are relatively sensitive to cost and have many requirements for high-speed working conditions (such as some long-distance heavy trucks that require high-speed cruising conditions). It has relatively high reliability and strong overload capacity.
Technology development trend:
Flat wire motor technology: improve motor slot full rate and power density, reduce winding resistance, thereby reducing heat generation and improving efficiency. High speed: matching reducers, etc. to enable the motor to achieve greater power output at high speeds, while also reducing the size and weight of the motor. Multi-motor configuration: Some heavy-duty commercial vehicles use multi-motor distributed drive to achieve better power distribution and fault redundancy capabilities.
2. Battery system
Battery type:
Lithium iron phosphate battery: good safety, long cycle life, relatively low cost, widely used in many new energy commercial vehicles, especially urban buses, light logistics vehicles and other scenarios. Ternary lithium battery: The energy density is relatively high, but it has certain disadvantages compared with lithium iron phosphate in terms of safety and cost. It has certain applications in some high-end commercial vehicles that pursue high mileage and flexible space layout.
Development trend:
Intelligent battery management system (BMS): More accurate battery status monitoring (including power, temperature, health status, etc.), to achieve more reasonable charging and discharging strategies and safety protection. Exploration of new technologies such as solid-state batteries: If industrialized in the future, it can greatly improve safety and energy density. Development of fast charging technology: Reduce charging time during operation and improve vehicle operating efficiency. Battery standardization: It is conducive to the promotion of battery replacement mode and battery recycling.
3. Electronic control system
Vehicle controller (VCU)
More powerful functions: handle more complex power coordination control under more complex working conditions, including power distribution of multiple power sources (such as motors, engines - for hybrid commercial vehicles), optimization of brake energy recovery strategies, etc. Integration with other systems: Deep integration with intelligent driving systems, vehicle networking, etc., to achieve intelligent power control based on road conditions and operational needs.
Motor controller (MCU)
High efficiency: Use more advanced power electronic devices and control algorithms to reduce losses during power conversion. Improved reliability: Through redundant design, fault diagnosis and protection function enhancement, etc.
Powertrain system integration
Electric drive axle integration: Integrate the motor, reducer, differential, etc. into one drive axle to reduce volume and weight, and improve transmission efficiency and reliability. All-in-one controller: Deeply integrate the vehicle controller, motor controller, battery management system, etc., optimize the communication and coordination efficiency between systems, and reduce costs and line complexity.
Application of electric commercial vehicle powertrain system
Urban distribution logistics scenarios (light and micro new energy commercial vehicles)
Urban public transportation scenarios (large and medium-sized buses, etc.)
Urban sanitation operations scenarios (various special vehicles)
Intercity transportation scenarios (medium and heavy new energy commercial vehicles)
Engineering construction scenarios (engineering special vehicles, etc.)
Mines and other specific closed scenarios (heavy dump trucks, etc.)
Port scenarios (heavy tractors, special loading and unloading trucks, etc.)
Airport internal scenarios (airport special vehicles)
Tourist scenic spots scenarios (sightseeing vehicles, etc.)
An excellent powertrain system design needs to balance and optimize multiple aspects such as power performance, fuel economy, reliability, and cost to meet the needs of different vehicle types and users. AEAUTO will help you with your business.
