Winter arrived, but also to the season of electric vehicle owners.
Recently, the news of “Tesla Winter Renewal, Female Outlook”, and simply, the new car is 468 kilometers, and it can only run 200 kilometers, virtual standard. serious.
Do you say this? Is it responsible? Although Tesla and those winter life diving car companies are not good, NEDC can’t take off the dry system. After all, Tesla is 468 kilometers of battery life, is based on the conclusions of the NEDC working conditions. It is necessary to blame NEDC. This standard has been pulled up our expectation.
■ NEDC is also brilliant
Although everyone suffering from NEDC for a long time, in fact, people are also rooted, and its full name is “New European Driving Cycle”. The new European standard circulation test is also the test method used in my country’s national standards, which is suitable for the endurance miles of pure electric vehicles and the emission test of fuel vehicles. And in the field of electric vehicles, there is no long term, and it is also an “advanced battery life test standard” – many car companies are blowing and sufficient, and they know how to test the test conditions. Spectrum). After March of the same year, after Li Zhi failed to send the speed of microblogging, the industry began to give up the alternative freight, and focus on NEDC battery life.
In addition, there is no other endurance test standard to kill NEDC, plus more and more new energy cars in these two years, so it gradually became mainstream battery life test standards.
■ NEDC’s question is quite large
With more and more users in new energy cars, everyone will clearly feel that NEDC is not very reliable, then it is Where is it not reliable?
We know that the three murders of the electric car life are low temperature, high speed and air conditioning, and these three working conditions are basically equivalent to NEDC standards.
First look at the temperature, the temperature of the NEDC test is 20 ° C to 30 ° C, this temperature is more comfortable, that is, I am in this environment, the work efficiency is quite quiteWrong, don’t say electric cars. Let the electric car endow, the battery is paralyzed, and the low temperature that is started at all does not exist in the test process of NEDC.
Screenshots from GBT 18386-2017 
and then high speed, although NEDC also runs high speed working conditions, but the time is short, look at the working conditions below It can be found that 80-120 kilometers / hour’s high-speed working conditions only account for about one-sixth of the entire test.
As for air conditioning, don’t mention it, it is also closed during testing, but not only, other electrical appliances on the car are closed.
Screenshot from GBT 18386-2017
There is also a thermal knowledge, the NEDC test is running the gantry, although there is a blower simulation in front Wind resistance, also equipped with wheel-resistant equipment, but also differs far from the actual situation. 
In fact, we spit NEDC test, do not need too much professional knowledge, teach everyone, light, light, I can have a curve that I can paint, I know that it is not reliable; more reliable curves are generally affected. Parkinson syndrome, shaking, such as WLTP and EPA below.
The above figure is a curve of WLTP test, which is divided into four parts: low speed, medium speed, high speed and ultra-high speed, and road measurement, general Europe, the United States and Japanese cars like this standard.
EPA is a leading test leading to the National Environmental Protection Bureau, which is divided into municipal working conditions, high-speed operating conditions, intense driving conditions, and air conditioning use conditions, and considering the impact of high and low temperature. Two more stringent test standards.
Therefore, we can get a conclusion, NEDC battery life> WLTP battery> EPA battery life. Let’s find a lucky international superstar for these three tests – Model 3 to give you a verification. 
Model 3 Longhang Full Round Drive Edition is 590 in NEDC, WLTP, and EPA test, respectively (early 2019The domestic version, now stops), 544 and 523 (after upgrading, it is 499) km.
■ China’s own battery life – China Working Dominant (CATC)
In fact, the NEDC is an ornament, and its “E” is European. It is also Europe. It turns out that this standard is a bit soil and soil at this stage; while WLTP is more rigorous, its speed is close to 140 kilometers / when it is obviously not worthless.
With its residual hard access national standard, as the world’s largest new energy market, our Chinese people have developed a set of standards.
So China’s working conditions (CATC) have come, which provides a working curve that is more in line with China, and it is very likely to add low temperature and air conditioning.
China’s work condition has collected vehicle data in my country’s major cities, and statistics on different urban vehicles idle ratio, average speed, and speed distribution three major operating conditions .
Next, China’s working condition is used to refer to WLTP, divide the vehicle operation section into four stages of low, medium, high and ultra-high, combined with the above data, and obtained three operations: low speed Medium speed and high speed, and draw the traffic volume of these three speed intervals, and compare data with data such as drip, Gao De, develop test standards that meet the Chinese traffic environment.
The test time of China’s working conditions is the same as WLTP, which is 1800 seconds, with the proportion of the above speed range, 674 seconds, medium speed 693 Second, the high speed is 433 seconds, the average speed is 29 km / when, the maximum speed is 114 kilometers / hour, the idle speed ratio 22.1 percent, then the working chart is like this:
Screenshot National Standards “China Auto Driving Work Warranty Part 1: Light Car” Draft for Comment This test is also suitable for oil vehicles, and the fuel consumption dummy car companies also have good fruits.
At present, China’s working conditions have released three comments.Draft, but it is worth noting that this standard only gives the working curve. It is not clearly stipulated for the low temperature and air conditioning of us concerned. Of course, this is not the thing that this standard should be discussed. Next, a similar GBT should be 18386 The battery life test standard for electric vehicles.
It is worth looking forward to, “China Automotive Work Warranty Part 1: Light Car” Decision Draft Preparation In the statement, the problem of electric vehicle air-conditioning affects the endurance, and also reported that CATC will increase high. Open the experiment of air conditioning under low temperature. 
The recent Ministry of Industry and Information Technology also stated that the relevant units of the organization have formulated technical specifications, accelerating the promotion and application of China’s working conditions (CATC),
Clear low temperature environment product performance and skills requirement. 
At the same time, “Watch” said: “The government’s relevant departments should use the more close-to-active national standard, and press the electric car manufacturer to see the technical short board, expressing the low temperature in winter may give battery performance. Bring the attenuation, let consumers no longer have a flicker, let the manufacturers who dare to brag your bragie will pay the price of real gold and silver. At the same time, the more scientific energy consumption testing and publicity system should be based on the establishment of fair competition. Market circulation order. “
So we can look forward to it, a battery life that is suitable for China’s road conditions, considering low temperature and air conditioning issues. According to the plan, this will be implemented around 2025.
■ The car company will act!
In a word, the car enterprise should face the electric car low-temperature continuous saving, do not pull the skin, launch measures to ensure low temperature. 
Although everyone understands the three killers of electric vehicle life, there are industry insiders mentioned that the two issues of the current electric vehicle consumers are safe, life, while winter Use the car behind.
Coupled with most electric vehicles users concentrated in the south and Central Plains, some of the people of the northeast, the winter tribes are obviously not worthy of car enterprise.
Fortunately, there are also many cars, and the needs of the car owners of the northern owners, such as Weima.Diesel heating system, the effect is pulled down (the specific contrast can refer to the measurement results of the electric bonus “); even Hongguang Mini EV this kind of car, also equipped with battery preheating system; the car is added to the steering wheel heating, heat pump air conditioning, etc. Configuration; plus the country gradually attaches great importance to these hidden diseases, and believe that car companies will give more clear and more effective answers as soon as possible.
■ State Review
In general, you want the electric car to be unable to make a country, industry, manufacturers, and even media and consumers work together. I believe that at all people’s joint efforts, electric vehicles can be accurate to continuously, more convenient to use the car, and make a faster direction.