There is a very interesting phenomenon in the new energy vehicle market, every few months, the extended-range hybrid and the plug-in hybrid will tear each other apart, and everyone is also standing on their own positions to talk to themselves and argue.
They quarrel with them, if you look at the battle between extended-range hybrid and plug-in hybrid from the technical route, who is stronger?
There is no doubt that if it is from a technical point of view, the extended-range hybrid is indeed a backward technology, but it is not necessarily from the perspective of cost and reliability.
The first is the working principle of the extended-range hybrid [range extender (engine) - drive motor - battery - wheel].
In pure electric mode, the large-capacity power battery supplies power to the drive motor to propel the vehicle, which uses most of the electricity when running in the city. If the battery is running out of power, or you switch to hybrid mode, the range extender will power the drive motor to drive the wheels and charge the battery at the same time.
Whether in urban road conditions or high-speed road conditions, the range extender has always played the role of a "power bank", which is only responsible for supplying power to the drive motor and power battery, and does not directly participate in the drive drive. At present, the representative models of the extended range hybrid in the Chinese market are the Yangwang U8, the Deep Blue S7 SL03, the Li L7 L8 L9, as well as the Wenjie M5 M7 and the Nissan Sylphy e-Power and X-Trail e-Power.
In fact, according to the working logic of the hybrid system, the extended-range hybrid is a simple series hybrid structure. Thanks to the progress of the power battery, it can achieve a pure electric range of 150km-200km, and at the same time, there is a range extender to generate electricity, which solves the problem of high energy consumption of urban vehicles and long-distance range anxiety.
There are pros and cons, and extended-range hybrid vehicles have a ** problem when running at high speeds.
Because the power consumption of the drive motor increases at this time, the range extender will be in the high-intensity working range for a long time, and the fuel consumption will also increase. Even because of the weight of the body, the fuel consumption at high speeds is even higher than that of traditional fuel vehicles, and because there is no gear change, the driving experience is not good.
On the other hand, the current mainstream plug-in hybrid technology, such as BYD's DM-i, Great Wall Hi4 intelligent electric four-wheel drive, and Geely 8848 Thor electric hybrid. They are hybrid technologies that can be connected in series and parallel, which means that the working logic of the series of "extended range hybrids" has been included in the plug-in hybrids.
Specifically, in series mode, the engine can supply power to the drive motor and charge the power battery; In parallel mode and direct engine drive mode, the engine can participate in the vehicle drive. In high-speed road conditions, because the engine is in an efficient working range, the fuel consumption of plug-in hybrid models will be lower at this time, and because the hybrid like Great Wall, Geely, and Chery uses a multi-speed hybrid gearbox, there is a process of upshifting and accelerating and decelerating, so theoretically its driving experience will be better, but many people can't feel it in this process, and they don't have to feel it, they just need to save fuel.
Since the extended-range hybrid can't do the thing of plug-in hybrid, and the plug-in hybrid can do the thing of extended-range hybrid, then the extended-range hybrid PK plug-in hybrid, from a technical point of view, it is clear who is superior and who is inferior.
It is worth mentioning that because the range extender of the range extender of the range extender does not have a drive requirement, the technology does not need to be very advanced. It is precisely because of this that the ideal and the world can be used with just one, not to mention the DHT gearbox dedicated to hybrids, without more than ten or two years of accumulation and a large amount of capital investment, they really can't get it.
The problem also arises, and the extended-range hybrid has been said to replace the plug-in hybrid, mainly from the cost and reliability considerations. Because plug-in hybrids have a complete set of transmission systems than extended-range hybrids, and the dedicated transmission for hybrid is the most difficult part of the hybrid system, not to mention the need to bypass patent barriers, which makes its research and development more difficult.
Once the machine is complex, the higher the cost, and at the same time, various problems will inevitably occur, which is the advantage of extended-range hybrid over plug-in hybrid.
In fact, the hybrid can have today in the Chinese market, mainly thanks to the support of policies, as well as the development of power battery technology, and the large-capacity power battery makes the extended range hybrid have a place. Of course, the most important thing is the current mainstream extended-range hybrid car, ideal L9, as well as Wenjie M5 M, their main selling point is intelligent, large-space family car, and these are directly hit the most urgent needs of Chinese consumers, plus most people do not often have to run long distances, the drawbacks of extended-range hybrid are avoided. (Text: Youshi Auto forward).
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