What does the 48V mild hybrid system mean?
2 Answers
48V mild hybrid system is a hybrid system that adds a 48V lithium-ion battery to the traditional 12V battery. The 12V circuit is responsible for handling conventional electrical loads, such as lighting, ignition, and audio systems. The 48V circuit supports active chassis systems, air conditioning compressors, and regenerative braking systems. The 48V mild hybrid system mainly consists of three core components: a boost recovery motor, a power conversion unit, and a power battery. In this system, the motor hardly participates in directly driving the vehicle but serves as a tool for energy recovery to assist the engine. This allows all the vehicle's electrical equipment to minimize dependence on the engine, enabling the engine to drive the vehicle more efficiently.
Speaking of the 48V mild hybrid system, it's like giving the car a little assistant. It's much more powerful than the 12V voltage in regular fuel-powered cars, enabling more functions with this system. Simply put, it adds a BSG motor next to the engine, using electric drive instead of fuel during starts and low speeds, giving the engine a helping hand. The most noticeable improvement is the smoothness of the auto start-stop function—the jerky feeling from before is basically gone, and the AC keeps blowing cold air even when the engine shuts off. In city stop-and-go traffic, it can save about 10%-15% on fuel, and the motor can also recover braking energy and store it in the lithium battery. But don't expect it to run purely on electricity; its main role is to assist the fuel engine in working more efficiently.
