What is the principle of BYD's DMI technology?
2 Answers
BYD DM-I technology principle: The engine drives the generator to produce electricity, the generator charges the battery, and the motor drives the vehicle. The specific details of BYD DM-I technology are as follows: 1. This technology has one main motor and one auxiliary motor. The engine is only used for power generation by M1 and does not participate in driving the wheels. M2 is the main motor, which recovers energy during braking to charge the battery. 2. DM-I mainly relies on high-power and high-efficiency motors for driving. The main responsibility of the gasoline engine is to generate electricity in the high-efficiency speed range and directly drive the vehicle at appropriate times. By changing the traditional hybrid technology design that is mainly based on the engine, fuel consumption is significantly reduced.
BYD's DM-i technology is actually quite like an intelligent butler, capable of automatically adjusting the power mode based on road conditions. Simply put, the engine is mainly used to generate electricity, while the wheels are mostly driven by the electric motor. From my daily driving experience, I've noticed that it runs purely on electricity in traffic jams, making it exceptionally quiet, and the engine only quietly starts to recharge when the battery is nearly depleted. On the highway, it allows the engine to directly drive the wheels to avoid energy waste. The most ingenious part of this system is its sizable battery pack, which enables a pure electric range of about 110 kilometers under normal charging conditions, and a combined fuel consumption of just over 4 liters per 100 kilometers on long trips. Additionally, it comes with a built-in regenerative braking system that recaptures a bit of energy and stores it in the battery every time you brake. This principle makes the car both quiet and economical, far smarter than traditional fuel-powered vehicles.
