What is the working principle of BYD DM-i Super Hybrid?
2 Answers
Introduction to the working principle of BYD DM-i Super Hybrid: The DM-i Super Hybrid technology is designed based on the highly safe Blade Battery and high-performance high-power motors. It primarily relies on high-power, high-efficiency motors for driving, while the gasoline engine's main role is to generate electricity within its efficient RPM range and directly drive the vehicle at appropriate times. By altering the traditional hybrid design that is primarily engine-centric, it significantly reduces fuel consumption. Below are some key points about DM-i: 1. Models equipped with DM-i: The Qin PLUS DM-i, Song PLUS DM-i, and Tang DM-i, all featuring the DM-i Super Hybrid, have started pre-sales. Among them, the Qin PLUS DM-i has a fuel consumption of 3.8L/100km (NEDC) under battery-depleting conditions and a comprehensive range of over 1,245km. 2. Operating modes: In pure electric mode, the dedicated Blade Battery supplies power to the drive motor. In most hybrid modes, the engine drives a high-power generator to supply power to the drive motor. During medium-to-high-speed driving conditions, the engine directly drives the vehicle or works in parallel with the drive motor to output power.
I previously studied the working principle of BYD's DM-i Super Hybrid system and found it quite ingenious. Simply put, it's a plug-in hybrid system consisting of a highly efficient engine, a high-power electric motor, and a large-capacity battery. At low speeds, such as during urban commuting, the system prioritizes using the electric motor to directly drive the wheels, powered by the battery, resulting in complete silence and zero emissions. When the speed increases or the battery charge is insufficient, the engine kicks in, but its main task isn't to drive the wheels directly. Instead, it acts as a generator to recharge the battery while the electric motor continues to operate, maintaining high efficiency. During high-speed driving, the engine directly drives the wheels to save energy. The entire system is controlled by an intelligent computer that switches modes in real-time to ensure optimal fuel efficiency and strong power output at all times. After using such a vehicle, I found that it accelerates very quickly in real-world driving, going from 0 to 100 km/h in just a few seconds, with a combined fuel consumption as low as around 4 liters per 100 kilometers. On a full charge, it can run over 100 kilometers in pure electric mode. Compared to traditional hybrids, the DM-i's charging capability is a standout feature—just plug it in at home, and daily commutes hardly require any fuel, making it especially eco-friendly and convenient.
