All electric vehicle owners are most afraid that the vehicle will become an "electric dad" in winter. As we all know, electric vehicles are prone to problems such as obvious lack of power and poor driving experience when driving at low temperatures, which affects the driving experience and safety of users in winter to a certain extent.
Although the active safety of many electric vehicles is not bad now, it is really a question mark whether it is good in the cold winter. No, Jiguojun also conducted a special test (including AEB test on icy road surface during the day in winter, snow ACC test during the day in winter, snow ACC test at night in winter, etc.) to see how the active braking performance of different new energy vehicles in winter is, and who is the "king of winter"!
Before we start the race, let's talk about the test model and the environment. The three models tested this time are:The M7 intelligent driving version, the ideal L7MAX and the Tesla Model Y all-wheel drive long-range versionThe vehicle systems have all been updated to the latest version, and all sensor active safety parameters have been adjusted to the most sensitive state.
In addition, since it was a winter test, we also retrofitted all three cars with new snow tires of the same brand to ensure better grip.
In order to accurately verify the real performance of these mainstream electric vehicles in the extreme winter environment, we chose the test site in the north of China, where the current site temperature is minus 4 degrees, and the asphalt road surface is wet and slightly iced, resulting in less friction on the road surface, which is very suitable for testing the braking and grip of the car.
Then let's not talk nonsense and get started!
The first is the winter daytime AEB test. To make a long story short, this test is designed to test the vehicle's automatic emergency braking performance under normal driving conditions to see if it can recognize and brake static fake cars on icy roads.
The first to be played here is the Ideal L7, which approaches the dummy car at a speed of 30km h, and steadily recognizes and brakes.
Then increase the size of 40km h, the ideal L7 set off again, but the braking force is not enough at all, but we do not give up, and the second 40km h, and finally still fail, it seems that 30km h is the limit of the ideal L7.
Next, it was the turn of the Tesla Model Y to take the field, still starting at 30km h, accelerating, starting to recognize, braking, and braking perfectly.
It's another 40km h below, and Model Y set off twice in a row, but failed.
Unexpectedly, Tesla, which has always advertised itself as strong and powerful in the field of safety, did not even pass the AEB test at a speed of 40km h.
However, to be serious, in fact, the AEB function will be very close even in the case of good visibility, from the identification of obstacles to the start of braking, especially when the weather is cold and the road surface is a little slippery, the AEB will be more affected.
Forget it, let's take a look at the performance of the M7, still 30km h, start, perfect braking, early warning, braking force is also very large.
In the next 40km h, it still braked perfectly, surpassing the ideal L7 and Tesla Model Y.
It's not over yet, in the more difficult AEB test of 50km h, it still brakes perfectly, and it seems that the M7 is really strong!
Overall, all three cars performed well in the AEB that was frozen during the day, especially the M7. It seems that the test is too simple, so let's upgrade the difficulty.
Snow acc test, start!
As the name suggests, ACC will help you step on the brake and accelerator to adjust the speed of the car and maintain a certain distance according to the speed and distance of the car in front of you, so as to realize the longitudinal control of the X-axis of the vehicle, eliminating the need to frequently step on the accelerator and brake, which will be easier. However, ACC does not control the steering wheel and has to control the steering manually.
It should be noted that the test was carried out on snow and the grip was poor, so the braking distance increased significantly.
In the future, for the sake of safety, the maximum speed is only controlled at 60km h for the time being.
At the beginning of the test, the ideal L7 was on the field first, starting from 50km h, and you can see that the vehicle was recognized, braked slowly, and braked perfectly!
However, when I added it to 60km h, it was a bit difficult, and I felt that the strength of the deceleration was not obvious, and I tried 60km h twice in a row, but I failed.
So, let's take a look at the Tesla Model Y, it's still 50km h, the naked eye can see that the vehicle recognition is very early, and the braking is soft, and finally the brake is beautiful!
Surprisingly, the Tesla Model Y still survived to the end even if it was changed to 60km h.
Well, now it's the turn of the M7,50km h, which is also very early to recognize, and the deceleration is also very comfortable.
Then, continue for 60km h, and still pass steadily.
I have to say that whether it is Tesla Model Y or Wenjie M7, it is already great to be able to achieve a snow ACC of 60km h.
In addition, from this test, it can be clearly felt that when the vehicle is driving in the snow, it does perform better after turning on the ACC, mainly because it can recognize the vehicle in front earlier, slow down in advance, and the vehicle safety will be higher.
But then again, it's daytime, and if it's night, plus the snow, can these three cars still brake?Then try it!
It's easy to say, but it's really a snow ACC test at night, and it's not easy.
As we all know, the coefficient of friction on ice and snow roads decreases, resulting in a decrease in tire grip and a greater chance of skidding, resulting in an increase in the braking distance of the vehicle. In addition, the light at night is complex and accompanied by the interference of snow on the camera, so the ACC test in the snow at night is not only a test of AEB's emergency braking ability, but also a comprehensive consideration of intelligent assisted driving of car companies.
Let's take a look at the performance of the three cars!
This time it is still the ideal L7 to come first, 40km h, 50km h all passed, the ideal L7 performance this night is indeed okay!
Next, the Model Y, 40km h, 50km h, also passed, and the performance was stable.
Finally, it is the M7, 40km h departure, stable braking;Continue for 50kmh, recognize the fake car, start to slow down, and finally stop driving relatively close to the fake car.
Overall, the three cars were evenly matched in the ACC test in the snow at night, and proved their active safety level with practical actions.
Then, the next step is to increase the difficulty and conduct the ACC test in the snow at night. Obviously, due to the addition of backlighting, it is almost impossible to see the road with the naked eye, and the difficulty is increased again.
Test begins!The ideal L7 approached the fake car at a speed of 40KMH, and finally successfully identified, decelerated, and braked perfectly in a large backlight environment, which is beautiful.
However, it was a little too early to be happy, and when the 50km h test was continued, the vehicle failed, and even automatically quit after the ACC was recognized, which is also outrageous and indeed a little too irresponsible.
Forget it, let's take a look at the next Model Y.
40km h departure, successful stop;50km h, 60km h, no problem, stable performance.
Finally, the M7 also maintains a 40km h departure, early recognition, and stable braking50km h, 60km h, all are very stable to achieve recognition and braking, very easy.
You know, in this very strong backlight environment, the driver can not see the road ahead at all in the car, and the test at this time is the vehicle sensor, which must have better detection and recognition than the human eye, so that the vehicle safety will be higher.
Overall, in this night snow backlight ACC test, the intelligent driving system of Tesla Model Y and Wenjie M7 has strong recognition and braking capabilities, as well as high reliability and safety. Of course, the performance of the ideal L7 is also okay, at least it also found the car in front of it in the test at 40km/h, and it can also slow down.
But then again, none of the above tests are actually the hardest, let's go straight to the ultimate difficulty!
Night, snow, backlight, and snow can be said to be full of various buffs.
The old rule, this time still place a static fake car in the middle of the road, and the vehicle turns on the adaptive cruise function to see if the vehicle can complete the braking.
Due to the very complex environment, this time we started the test from 30km h. The ideal L7 set off first, the environment was still relatively harsh at that time, and the road ahead was almost completely invisible to the naked eye, but the car had something, and quickly recognized the fake car in front of it, and began to brake, perfect braking.
Embarrassingly, when the next 40km h continued to start, the farce of "automatically exiting after recognition" was repeated for the first time, but fortunately, the second time finally stopped perfectly.
In fact, it can be seen from many tests that the overall performance of the ideal L7 at 40KM h is not very stable, and even when I was given the opportunity to try 50KM H later, it still ended in failure. It seems that the stable results of the ideal L7 can only be maintained at 30km h.
Well, now it's the Model Y play.
At the first 30km h, the vehicle recognized the fake car very early and began to brake, which was very stableThe back 40km h, 50km h, is still stable, and the performance is good.
Finally, the test of the M7, which started at 30km h, was identified very early and decelerated steadily40km h, still very stable, even if the snow starts to get heavier and heavier, and the snow on the ground begins to get more and more, the test environment begins to get worse and worse, the M7 in the 50km h test, still stable deceleration and braking.
To be precise, from the perspective of the car, it can be found that the speed of the M7 is not a strict 50km h, but is set to 53km h, and it can brake at ACC 50km h at a speed of more than 50km h at night, in snow, backlit and heavy snowfall
In terms of overall performance, in terms of snow ACC, the M7 will perform better than the ideal L7 that is also equipped with lidar, whether it is day or night, or even in the harsh environment of backlight and snow.
During the day, the AEB performance of the M7 is also ahead of Tesla's Model Y and Li L7.
It seems that with the support of Huawei's excellent hardware and algorithms, the M7 does have more advantages than similar competing products in terms of active safety, which makes people feel at ease to use.
And through this test, it can be seen that driving in this extremely harsh environment, it is indeed safer to turn on ACC assisted driving, especially in the case of backlight at night, or in the case of poor visibility such as rain, snow, haze, etc., the human eye cannot see clearly, but the various radar sensors on the car can see farther and clearer than you to a certain extent. Again, although ACC is only an auxiliary, it can also avoid a lot of risks.
But then again, in this kind of harsh snow environment, car owners should also pay attention to slow driving, if the speed is too fast, even if the vehicle's sensors can know the situation ahead in advance, you are likely to not brake. In short, travel in the snow, safety first!List of high-quality authors