The three in one electric drive system technology for electric vehicles refers to the technology that integrates electronic control, motors, and reducers. With the continuous evolution of electric vehicle technology, integrated design will undoubtedly become the trend of future development.

With the continuous strengthening of environmental awareness and increasing oil prices, electric vehicles have gradually become the focus of global attention, and electric drive systems are the indispensable core technology of electric vehicles today. Among them, the three in one electric drive system technology has gradually emerged and attracted widespread attention.

The three in one electric drive system technology for electric vehicles refers to the perfect integration of the motor, battery pack, and electronic control system of the electric vehicle, achieving a high degree of integration of the three main parts of the motor battery controller, with the battery pack serving as the core of the entire system. The implementation of this technology makes the entire electric drive system smaller and more integrated, which can greatly improve energy conversion efficiency, thereby improving the driving distance and power performance of pure electric vehicles.

This system has the advantages of compact structure, simple structure, light weight, and low energy consumption. It can improve the performance of electric vehicles in terms of power, acceleration, range, and energy efficiency, and can meet the needs of consumers for "energy saving, safety, and efficiency". For a three in one electric drive system, the casing design needs to consider three factors. Firstly, it is necessary to consider the close coordination of the motor, electronic control, and transmission in a narrow space to ensure the compactness and lightness of the system.

Secondly, the casing also needs to have better heat dissipation performance to prevent damage to the motor due to prolonged overheating. Finally, the outer shell of the electric drive system also needs to have excellent dustproof, waterproof, anti-corrosion and other performance.