What is the difference between new energy vehicles and traditional car chassis

The most obvious difference between an electric car and a traditional car chassis is that the traditional car chassis is composed of four parts: the transmission system, the driving system, the steering system and the braking system. The overall shape of the car and receive the power of the engine to make the car move and ensure normal driving.

The basic structure of electric vehicles can be divided into three subsystems, namely the main energy system (electric power source), electric drive system, and energy management system.

Among them, the electric drive system is composed of electric control system, motor, mechanical transmission system and driving wheels; the main energy system is composed of main power supply and energy management system. The energy management system is to realize power utilization control, energy regeneration, coordinated control, etc. key components of the function. The electric drive and control system is the core of electric vehicles, and it is also the biggest difference from internal combustion engine vehicles.

The working principle of electric vehicles: battery - current - power regulator - electric motor - power transmission system - driving the car.

Pure electric vehicles, compared with fuel vehicles, the main difference (difference) lies in the four major components, drive motor, speed controller, power battery, and on-board charger.

Different transmission systems The variable speed transmission system is an important part of the electric vehicle drive subsystem, which refers to the mechanical connection between the drive motor shaft and the wheels. For traditional cars, the transmission is a necessary component, and what type of transmission is mainly considered in the design. But it is different for electric vehicles, because the torque and speed of the driving motor can be fully controlled by the electronic controller, so the design of the transmission system can have many different options. The speed can be changed by the traditional variable speed gearbox, or the electric motor can be controlled by the electronic driver to change the speed directly. Which solution to use should mainly be based on the energy and economy of electric vehicles, and also involves the design of motors and controllers.

In order to improve the transmission efficiency of electric vehicles, people have developed two-speed or three-speed automatic transmission axles that integrate electric motors and transmissions for electric vehicles. The advanced two-speed motor/multi-speed transmission bridge fully combines the variable speed gear set and the high-speed asynchronous motor, and is directly installed on the drive shaft of the electric vehicle drive wheel, forming a light weight, small size, high efficiency, compact structure and low cost Inexpensive drivetrain.