Popular science
And now, the popularity of electric bicycles has divided many people into two camps.
On one side there are fuel vehicles, and on the other side there are pure electric vehicles. From the point of view of the selling price, whether it is the subsidy when buying a car, or the cost of electricity in the future, it is relatively low.
These two aspects are incomparable to pure electric vehicles.
But there is one thing that makes those who like gasoline cars proud, and that is that electric cars will break down in these years.
Unlike gasoline cars, even in the cold north, gasoline cars can play a good power, but electric vehicles cannot, as soon as winter comes, its endurance will "swish" down, and the power will also decrease.
This makes those who are e-bikes sympathetic, and those who are petrol are smiling.
Therefore, the "oil and electricity war" has lasted for a long time, and the problem of electric vehicles failing in winter is also blamed, and it stands to reason that these new energy vehicle manufacturers cannot not understand.
Therefore, from 2009 to 2020, China's new energy vehicles have not gotten rid of the problem of "not being able to run in winter"?
This is also the reason why most gasoline vehicles are hesitant, because they are afraid that once this problem is solved, then the sales of electric vehicles will increase significantly.
Could it be that the low temperature problem of electric vehicles has not been effectively improved?
In the past two years, new energy vehicles have been more and more recognized by the public, but there are also some drawbacks, which have been criticized by many people.
For example, the battery life becomes shorter, the battery becomes larger, it is difficult to charge, it is difficult to heat, and even the car cannot be driven, these are all very common things.
In the north, there is not much danger without heating, at most it makes people shiver, but in this cold place, it is fatal.
It's not a joke, otherwise you'd freeze people to death. Therefore, in winter, a series of "fear of cold" produced by electric bicycles also makes many owners of electric bicycles feel extremely headaches.
A lot of people say that, and there is even a blogger who did a test in Beijing to test how far an e-bike can run in winter.
Unexpectedly, the blogger passed the test and found that the range of the electric car increased from 468 kilometers to 420 kilometers. That is, the car's mileage has dropped by about 40%.
From this point of view, whether it is the user's own personal experience or the test of experts, the range of electric vehicles will be compressed in winter.
No matter how passionate they are about e-bikes, one thing can't be denied.
What's going on? Is there any truth to this?
So, in the winter, the range of electric vehicles will decline, what is the reason for this? To answer this question, we must understand that there are two important reasons why electric vehicles are afraid of the cold.
First of all, the performance of lithium-ion batteries will deteriorate under low temperature conditions in pure electric vehicles.
The optimal operating environment for lithium-ion batteries is 15-39, and according to some experimental data, in an environment below -20, its charge will be reduced by 30%, and the range will be extended.
The battery of this electric car not only reduces its efficiency when the temperature is lower, but also has the characteristics of heating up.
In other words, unlike gasoline vehicles, gasoline vehicles use an internal combustion engine in winter, while electric vehicles use batteries.
Therefore, in winter, electric vehicles consume much more electricity than gasoline vehicles.
Of course, this situation is not something that all manufacturers want to see, because their technical level is limited, and they can't solve the problem fundamentally.
What is his improvement over before?
Even if it can't completely eliminate the problem of the sharp drop in electricity consumption in winter, car companies are doing other things.
Although the current electric bicycle is not enough to withstand the cold, it is certainly much better than the previous electric bicycle.
Its main manifestations are:
The first is "fuel warming", which means igniting the fuel and then heating up the battery.
Why do you have to use diesel instead of gasoline? As for why we use diesel, it is because it is not so lively, and it is safer than those high-calorie fuels.
This eliminates the risk of bursting when heating.
Secondly, it is PTC heating, which is currently the most popular heating method on the market.
The principle is to use a ceramic heating head followed by a heat spray, which can be used to achieve fast and precise heating of the coolant.
The third option is to use heat pumps. This method is also popular at present, and its working principle is to transfer a small amount of electricity to the car through evaporative heat absorption and liquefaction heat release through the reverse circulation of the air conditioner.
In short, the above three ways are all through various ways to minimize the energy loss of electric vehicles in winter.
Can fuel cars surpass electric vehicles?
Even if they try their best, they can't fundamentally solve the energy consumption of electric vehicles, and only make some minor repairs to the original foundation.
Then someone will ask, how can a pure electric vehicle outperform a pure electric vehicle?
In this winter, the performance of gasoline vehicles will far exceed that of pure electric vehicles, and the range of gasoline vehicles will also far exceed that of pure electric vehicles.
However, this does not mean that pure electric vehicles are inferior to fuel vehicles in all aspects, both in terms of acquisition cost and energy cost, which are much cheaper than fuel vehicles.
From the point of view of the climate, both cars have their advantages.
He firmly believes that with the development of the new energy vehicle industry, the new energy vehicle industry will become better and more in line with people's requirements.