Today, new energy has become the main theme of the form of automobile power, and it is an irreversible trend. In the process of moving from the fuel era to the new energy era, we have more discussions about the form of power. First of all, pure electric is well understood, and at the hybrid level, we have heard the debate about who is the better solution between plug-in hybrid and extended range. Let's take a look at it today.
At the beginning of this year, at a professional forum in the automotive industry, Ouyang Minggao, an academician of the Chinese Academy of Sciences, once said: series-parallel plug-and-plug hybrid contains the function of extending the range, which is richer in functions and lower in fuel consumptionAutomakers can market as much as they want, but the technology itself must be realistic.
It is true that technology must be based on the principle of seeking truth from facts, and marketing can only be the icing on the cake and not dominate. In terms of basic working principle, PHEV plug-in hybrid belongs to the hybrid structure, which can be driven in series by pure motors, or driven in parallel by engines and motors, and the biggest feature is that it can be directly driven by the engine. The range extender structure is a series structure, and the engine (range extender) only acts as a generator to charge the battery, and it is driven by a motor under all working conditions. In a certain case, we can understand that plug-in hybrid is an upgraded version of range extension, and includes the category of range extension.
Let's imagine a working condition now, you have to go through 800 kilometers of high-speed road conditions from A to B, and it is inevitable to drive at a loss of power, so how do the two hybrid forms perform in a state of power loss? The extended-range power is actually a series hybrid after the loss of power, its engine (range extender) can not directly drive the wheels, but only the ability to generate electricity, in the process of power conversion will undoubtedly lose a part of the power, so that the fuel consumption increases. Plug-in hybrid has many operating modes, which can be connected in series or parallel, it is a hybrid mode, that is to say, the engine can not only generate electricity, but also the motor can drive the vehicle together. Even drive the vehicle alone, if you lose power, you can connect it in series in the city. On the highway, it can be connected in parallel or directly driven by the engine, which has a more convenient power match for more complex working conditions. It can be said that plug-in hybrid can take into account the dual needs of vehicle performance and economy.
From the perspective of the development of the two technologies, the direction and goal of the plug-in hybrid camp is to support stronger pure electric endurance by adding large battery capacityAt the same time, it reduces engine involvement, and improves power performance and fuel consumption by optimizing the transmission design. The range extender technology is relatively simpler in structure, so it only needs to start with the range extender and three electrics to reduce the fuel consumption of the range extender, improve the performance of the BMS battery management system and electric drive system, and make up for the shortcomings of insufficient power under low power. It's obvious which is higher and which is lower.
Finally, let's be more specific, when it comes to plug-in hybrids, we have to think of BYD's "DM-i" super hybrid technology, BYD, as a leader in China's new energy vehicle field, continues to innovate in economic numbers, and sales performance once again confirms this. Now not only BYD is a household name, but even the super hybrid technology can be said to be well-known. On the other hand, who can you think of when you look at the manufacturers of extended-range power, it is more of some new forces in car manufacturing. We can't deny the new forces of car manufacturing, but from the perspective of the two hybrid forms, there are still advantages and disadvantages that can be compared and discussed. So do you have the answer?