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in the past one or two years, domestic new energy vehicles have developed rapidly, especially plug-in hybrid and extended-range vehicles, which have become the absolute main models of new energy vehicles. extended-range electric vehicles have also evolved from being considered backward product technology to becoming the first choice of many manufacturers and consumers. it can be said that extended-range electric vehicles have successfully counterattacked in the field of new energy vehicles in china...

however, from the consumer side, some "shortcomings" of extended-range electric vehicles are gradually emerging. many friends have expressed strong opinions that the pure electric range of extended-range electric vehicles is still too short. at present, the nominal pure electric range of relatively popular extended-range electric vehicles in china is only 300 kilometers, and most models are just over 200km. the actual pure electric range is even shorter.

however, after experiencing the quietness and money-saving of pure electric driving, most car owners are often reluctant to start the range extender, even when driving on the highway. under this background, the pure electric range of most extended-range electric vehicles is not enough and frequent charging is required. moreover, the pure electric power of most extended-range electric vehicles is not high, which greatly affects the user experience.

so many car owners and prospective car owners asked, why can't manufacturers design extended-range electric vehicles with a pure electric range of more than 400 kilometers, but equipped with a small fuel tank and a small range extender? the range extender is basically not used anyway, so why not use it occasionally?

first of all, we have to make sure that the design of the extended-range electric vehicle with a large battery and a small range extender is very easy, and it is not difficult for many manufacturers to achieve it. if the pure electric range of the extended-range electric vehicle is increased to 600-700 kilometers, it may be very difficult, but it is not difficult to achieve a pure electric range of about 400 kilometers!

however, from the perspective of product practical performance and reliability, the idea of ​​a range extender that matches the range of pure electric vehicles and has extremely small power and displacement is very "dangerous".

first of all, the large battery is actually not difficult. as mentioned above, as long as the size and displacement of the range extender and other engine peripheral components are compressed, the freed up space can be used to arrange the battery pack and increase the pure electric range. moreover, in the pure electric state, the power is still as strong.

the problem is that once the pure electric range is greatly increased, the size of the range extender will be very small, which also means that the power will be greatly reduced. many friends may think that it is not a big problem and they can just use it occasionally and run slower as long as it can be used.

however, automobile manufacturers cannot design their products with this kind of thinking. manufacturers must take relatively extreme situations into consideration and leave relative redundancy.

for example, some friends like to use up the battery power and then start the range extender to generate electricity to drive the vehicle. however, if the range extender is designed to be particularly small, it may be okay for constant and slow driving on a flat road, but when overtaking and going uphill are required, the battery is dead and the full power output of the range extender may not be able to drive the vehicle to complete overtaking and going uphill. this is because a longer pure electric range also means that the power battery is larger and heavier.

so this is very dangerous, and manufacturers cannot allow this situation to happen. even if the pure electric range is shorter, they must ensure that the vehicle can provide the most "basic" power when it is relatively dangerous.

so in fact, for car manufacturers, it is impossible not to pay attention to the needs of consumers and car owners to increase the pure electric range, but it is still difficult to achieve, because it is still necessary to fully consider the issue of safety redundancy. of course, with the continuous iteration of battery technology, it may be possible to achieve a longer pure electric range on a battery pack of the same size in a few years. at that time, extended-range electric vehicles will be more comprehensive.