In recent years, with the strong support of the national government, the development speed of the domestic new energy automobile industry is very fast, and the sales volume is also rising. However, for electric vehicles, the most concerned is the various problems that occur during the use of batteries. Especially in the cold winter in the north, the vehicle battery in the low temperature environment, charging speed, the degree of attenuation of the battery when the air conditioner is turned on and so on. To this end, based on the actual use needs of users to purchase pure electric vehicles, 58 Auto rushed to Swan Lake in Zhangjiakou Guyuan County, which is covered by ice and snow at minus 20 degrees and has extreme conditions, to complete an ice and snow experience related to new energy vehicles.
As we all know, in the cold conditions is undoubtedly a great test for new energy vehicles, especially in the ice surface of the vehicle tire adhesion is very low, even after the use of snow tires, nail tires, will also have a certain impact on the normal driving of the vehicle. Therefore, in order to provide a more comprehensive reference for new energy users, we will test the WEILAI ES8 car in two parts: low temperature static comprehensive test and ice dynamic performance test. Among them, the low temperature static comprehensive test mainly includes: low temperature charging speed, low temperature air conditioning system heating speed test, battery low temperature attenuation test, and low temperature endurance test. The dynamic performance test of the ice surface will multiply the performance of many performances of the vehicle, including: ice surface elk test, ice surface steady-state circle, 0-60km/h acceleration, 60-0km/h braking, etc. Let's take a look at them one by one.
The test began around 6 a.m., when the outdoor temperature exceeded minus -20°C and all staff were heavily armed in thick down jackets. The day before, the starting mileage of the NIO ES8 was 579km, and the starting battery percentage was 100%; after a night of "freezing" in the cold outdoors, the next day the vehicle had a meter mileage of 576km and a battery percentage of 99%, and the vehicle has maintained stable operation since starting.
Judging from the test results, the battery of the WEILAI ES8 has a very small loss itself, and the mileage is basically matched with the normal environment.
Next is the low temperature charging speed, which is also the most concerned issue for consumers. When the WEILAI ES8 is connected to the charging pile for charging, the initial power of the meter remains 46%, and after charging for 30 minutes, the power is charged to 51%, which is indeed not high.
The main reason is that WEILAI ES8 is equipped with a battery temperature control management system, in the case of low outdoor temperature, the charging pile will give priority to the battery system to preheat, heating to the appropriate temperature will charge the battery, so that not only the battery system to maximize the charge, but also for the winter mileage to improve has made a great contribution.
Considering the travel needs of new energy users in the low temperature environment in winter, the temperature inside the car is also very important. After the ES8 was "frozen" for one night, the first thing we did when we got in the car was to turn on the air conditioning. In order to more intuitively view the temperature changes in the car, we placed a thermometer, the actual temperature outside and inside the car on the day of the test is -16 °C, but the thermometer directly displays "L" at -10 °C, so it is set to -16 °C as the starting temperature. Turn on the warm air, adjust the temperature to 26 ° C, open the internal circulation, the air volume is adjusted to the maximum, after 5 minutes, the thermometer shows zero 0.3 ° C; after 10 minutes, the thermometer shows zero 5.9 ° C; for the heating performance of the air conditioning system is worth affirming, greatly satisfying the comfort of the ride.
In addition, it is worth mentioning that all models of WEILAI ES8 are equipped with heat pump air conditioners as standard, which not only heats up quickly, but also has the advantage of energy saving, further reducing energy loss.
This time, we did not conduct an endurance test in the state of full power, after all, when using a car in winter, running the electricity to nothing is not very suitable for the car scene. Therefore, the NIO ES8 will be controlled by the same driver and the same brand of snow nail tires on the same snow track, recording how many kilometers the vehicle consumes 10% of the power. The 10% power of the NIO ES8 from 87% to 77% has a cruising range from 509km to 452km, and the meter shows a power loss of 57km, which actually drives 9km.
In the dynamic performance test, it covers ice surface elk test, ice surface steady-state circle, 0-60km/h acceleration and 60-0km/h braking.
The first is the ice surface elk test, the main experience is the ABILITY of the NIO ES8 to avoid obstacles on the ice surface and vehicle stability at different speeds. Due to the low adhesion on the ice, we controlled the speed to 25km/h, 30km/h, and 35km/h. Weilai ES8 is relatively stable when accelerating, the tail has always maintained a good track, there is no slippage and tail flicking, successfully passed the first two speed tests, and the third speed did not pass smoothly, mainly due to the high center of gravity of the Weilai ES8, and has a longer body, if driven at a speed of 35km/h, the body will appear briefly skidding, but the body stabilization system will quickly intervene, at this time the vehicle will quickly correct back to the normal traveling attitude.
The fixed circle experience is to test the maximum speed of the vehicle around a fixed 40-meter diameter ring with the body stabilization system on and off. In this process, the driver will gradually accelerate according to the condition of the vehicle, the main purpose of which is to test the operation of the body stability system, and to simulate the stability of rapid turns, U-turns, and roundabouts in the actual road. In the end, the NIO ES8 circled at an uncontrolled speed of 31km/h, during which there was no obvious tail flicking phenomenon, mainly thanks to the help of the four-wheel drive system, so that the NIO ES8 could come and go freely in the snow.
Finally, 0-60km/h acceleration and 60-0km/h braking sessions, NIO ES8 achieved 0-60km/h acceleration in 5s; 60km/h-0 braking performance 36.8m. In fact, the level of absolute power is not the most important, but whoever has a strong grip will run fast, so it is not surprising that the Weilai ES8 equipped with a four-wheel drive system has won with absolute superiority.
0-60km/h acceleration
0-60km/h brake
In general, the heat pump air conditioning, seat heating, and steering wheel heating functions equipped with the NIO ES8 are very practical in winter, which greatly increases the comfort of the ride. Moreover, after two days of actual experience, the battery life performance of the WEILAI ES8 is worth affirming. Outside at minus -20 ° C, the vehicle is turning on the warm air the whole time, and the endurance of the table does not change much. Even if you repeatedly test on the ice during the day, pull people back, and check the meter at night, there are more than 350 kilometers left, which is a great advantage in many new energy vehicles. Judging from the overall performance of WEIO ES8 in the Chinese market, both user reputation and sales performance have received good responses. Of course, it is indeed a little higher in terms of price, but you can enjoy a better car experience. Welcome to pay attention to 58 Cars, and we will bring you more ice and snow reports in the future.
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