Near the Spring Festival, various places have also ushered in the largest range of rain and snow this year, and the media have called it the "coldest Spring Festival". For those who are ready to drive an electric car back to their hometown, this is not good news. Originally it was a hard scalp to challenge the high speed, and then encountered this kind of weather, it was definitely a house leak that coincided with overnight rain.
As far as the news obtained by Kung Fu Automobile in the past two days, there have been a number of high-speed "anchoring" accidents of electric vehicles in China. The reason is quite uniform, the weather is cold and consumes power fast, the charging bit in the service area is fully discharged, and then look at the remaining endurance to challenge it, and the result is that the power is insufficient without running far, and can only barely stop in the emergency lane waiting for rescue.
This situation can be said to be expected, on the one hand, there are so many cars in the Spring Festival every year, and it is normal for some vehicles to break down, but new energy vehicles seem to be more "eye-catching". On the other hand, the Spring Festival is indeed a very big challenge to new energy vehicles, not to mention this "coldest Spring Festival".
So how do you solve this problem? Let the kung fu car take everyone to see it together.
(1) Self-cultivation of electric vehicle owners
First of all, whether it is a fuel vehicle or a new energy vehicle, it is necessary to do a basic inspection before the "big test" of the Spring Festival. For example, how much the tire wears, whether the headlights work well. From the personal experience of Kung Fu Cars, in this rainy and foggy weather, many users actually do not turn on the fog lights, but turn on the double flash, which is really spicy eyes, and the effect is not good.
For new energy vehicles, it is very necessary to do a good job of route planning in advance. First of all, we must have a good idea of the real endurance of our own vehicles, the standard endurance of the Ministry of Industry and Information Technology announced by the manufacturer is a number, usually in the urban area is a number, running high speed plus rain and snow weather, it may be another number, it is likely to be 60% off or even 50% off.
Therefore, before departure, if the distance is more than 500 kilometers, we must first plan where to replenish energy, and we cannot take one step at a time. At least before the cruising range is less than 100km, it is roughly certain that you can reach the corresponding service area, and it is best to prepare plan B, once the service area charging queue is too much, you can consider getting off the highway from the nearest intersection and going straight to the service station in the city. In fact, during the Spring Festival, the city is not so congested, and generally speaking, charging facilities will be more abundant.
And the low temperature not only affects the battery life, but also affects the charging speed. This and the endurance decline is actually a problem, that is, the chemical property activity of the battery at low temperatures has decreased, and this piece also requires more patience.
For driving, users can consider the following points. When it is necessary to save energy as much as possible, the first thing is to try to control the speed within 100km/h, although some are not authentic, but before the kung fu car measured, when the speed of electric vehicles is 120km/h, the energy consumption is about 30% higher than 1000km/h. Of course, running 60km/h will save more power, but this is not realistic at high speed.
In addition, try to adjust the air conditioner as small as possible, its impact is also very large, because most of the current electric vehicles are still PTC heating, and the heater, bath master these are similar, especially electricity-intensive. If you can open the seat heating and steering wheel heating alone, it is best, according to the driving experience of the kung fu car, so that the comfort is actually better than turning on the air conditioner. Of course, try to have "pre-judgment", avoid rapid acceleration, deceleration, but also reduce power consumption.
Usually in the city how to open does not matter, the Spring Festival plus the cold, or a little more preparation is better. After all, when the time comes, it is still yourself who is embarrassed.
(2) It is imperative to strengthen "infrastructure"
In recent years, the vigorous development of electric vehicles has become the top priority of the automotive industry, and the state has also invested a lot of resources, not only to benefit consumers, but also to give enterprises a lot of subsidies.
However, we must not subsidize and promote it while ignoring it. Most of today's users are true love fans, and once they break their hearts, they will never come back.
First of all, it is natural to strengthen the construction of high-speed charging piles, one is that the increase in quantity is at least faster than the growth of new energy vehicle sales, and the other is to strengthen management norms. For example, kung fu cars have encountered this situation before, the parking space is far away from the charging pile, and then the charging line is not long enough after the car is parked, and the result is not enough. It took nearly 20 minutes to start charging the vehicle again, having to readjust the vehicle again. Of course, there is also a unified charging interface, do not get half a day, the result is found to be mismatched.
There are also people often encountered, it is difficult to find a charging pile, the result is found to be bad, and have to look for it again, at this time the owner's mileage anxiety is even more unbearable. It is best to establish an APP, these charging piles are networked, there are staff regular maintenance upload information, the owner can know the queuing and working conditions of the charging pile in advance through the APP, and minimize these uncontrollable factors.
Then there is the high-speed service area as far as possible to use fast charging, this time do not consider whether to hurt the battery, this thing is not so fragile. From 30% charge to 80%, exit immediately, saving time for the next user. Don't keep occupying the charging pile, and then causing the queue to squeeze, and finally the row is getting longer and longer.
Of course, it is better to take the lead in "changing electricity" by the state, which is more efficient. It only takes 3 minutes for Weilai to complete a power exchange, and Geely's newly established Ruilan Automobile claims to be 1 minute, and this energy replenishment rate can meet the requirements of the Spring Festival.
(3) Car companies need to work hard, and users polish their eyes
In addition to strengthening infrastructure, car companies also need to do more. I believe that everyone has found that between different car companies, the endurance "fidelity" of encountering this extreme situation is completely different. Some winter high-speed discount 50%, some can still have 65% off, this difference is magnified to long-distance endurance, the gap is quite large.
This is mainly determined by the ability of its BMS battery management system, which can intelligently adjust the temperature of the battery in addition to monitoring the working state of the battery and avoiding overcharge and over-discharge. For example, in cold weather, the battery can be preheated in advance to make the battery work at an ideal temperature, so that the discharge caused by insufficient battery activity can be avoided.
For example, manufacturers can strengthen the calibration and adjustment of operation in cold areas to maximize winter endurance. Users can also pay more attention to the winter endurance measurements done by major media, and have a bottom in mind before buying a car.
Then there are some new technologies that can be used, such as heat pump air conditioning. The earliest tesla Model Y is on the carrier, and recently the BYD Dolphin and The Xiaopeng P5 are also equipped, which has pulled this technology to the level of 100,000.
The working principle of this air conditioner is closer to our daily frequency conversion air conditioner, which is no longer PTC heating, but lets the compressor drive the refrigerant flow in the internal pipeline, and then provide energy through the refrigerant in the two parts of the condenser and the drying tank. The boiling point of the refrigerant is minus 28 ° C, which means that as long as the air conditioner is higher than this temperature, the heat pump air conditioner can work, basically covering the vast majority of the domestic car environment.
Compared with the traditional PTC heating, the heat pump air conditioner can increase the endurance by about 15%, which can be said to be a lot of environmental "discount" problems in winter battery life.
(4) Kung Fu shooting
In recent years, the development of new energy vehicles can be said to be obvious to all, not only the current new car endurance has been improved a lot, but also the technology has been synchronously improved. The Spring Festival is an annual test for new energy vehicles, and after passing, it can be continuously improved. Before the electric car did not dare to go on the high speed, now dare to go, before often can only drive at the speed of the turtle on the high speed, now it is basically normal, before the Spring Festival did not dare to think, now more and more new energy vehicles have joined the new energy army.
Progress is step by step, electrification is the trend of the times, the state, car companies, car owners work together, maybe next year's exam results will be better.