When various power systems emerge in an endless stream, there is also a common but less well-known power system, that is, the 48V micro-hybrid system. We currently hear the highest frequency from Audi, followed by Mercedes-Benz, and the current market flagship is the 3.0T+48V micro-hybrid system.
Strictly speaking, the micro-hybrid system is not a vehicle in the range of new energy sources. It is only a product of the era of vehicle electrification. When there are more and more electronic components on the vehicle, the 12V battery cannot meet the power supply demand, so 48V was born. .
【Micro-hybrid system structure】
The micro-hybrid system is composed of a traditional engine, a 48V battery, a power recovery motor, and a power converter. The 48V battery supplies power to the motor and some power-consuming components on the vehicle. Does it sound similar to the hybrids like Toyota and Honda? Yes, the principles are basically similar, but the 48V micro-hybrid system does not have a separate pure electric driving mode, just as an auxiliary, the hybrid technology of Toyota and Honda can be driven purely by electricity. of.
【Significance of the existence of the micro-hybrid system】
The simplest explanation for the micro-hybrid system is to add a 48V battery to the original 12V battery. The 12V battery is what we know as the battery, which is used to start the vehicle and power the headlight in-car entertainment system. Now, for better power output and energy saving and emission reduction, it is necessary to optimize the power system. Among them, the electronic supercharger and motor need a larger voltage battery to drive, so a 48V battery is added.
【Advantages of micro-hybrid system】
The motor will more comprehensively control the engine speed, including acceleration. Compared with the fuel car, it is smoother, the power output is smoother, and the fuel consumption can be reduced by 10%-20%. Compared with electric vehicles, it still has the original attributes of fuel vehicles.
A complete zero-speed coasting mode can be achieved. At this moment, even if the engine is powered off, the electronic power steering and brakes can still work on the 48V lithium battery, and the basic coasting control is not affected. This achieves the effect of reducing fuel consumption.
At the same time, the electronic turbo powered by the 48V battery can control the speed of the turbo, let the turbo work first before the pressure is applied, reach the pressure value faster, and greatly reduce the turbo lag.
[What you need to know about 48V micro-mixing]
Regarding the micro-hybrid system, I can summarize it into the following points. First, it is not a hybrid like the Toyota Atkinson cycle engine. Second, its micro-hybrid cannot be driven by pure electric independently. Third, its 48V represents The voltage of the lithium battery is the same as that of the 12V battery. More functions are to power the large electronic components of the vehicle. Fourth, it is not a new energy vehicle.
[Isthemicro-hybridsystemworthbuying?】
At present, most of the 48V micro-hybrid systems are matched to models above medium and large. Compared with traditional engines, models with the same displacement have added a 48V micro-hybrid system. In addition, the feeling is much different, with low fuel consumption and smoother performance. Shorter turbo lag, and the practical frequency and strength of the battery are not as high as traditional hybrids, which are more stable, so if this level is considered, then the 48V micro-hybrid system is really recommended.
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