All electric vehicle owners are most afraid of winter vehicles becoming "electric daddies", and in order to verify the true performance of domestic mainstream electric vehicles in the extreme environment of winter, Autohome held a multi-vehicle winter horizontal evaluation test.
A few days ago, Autohome uploaded a winter measurement video of 21 new energy vehicles in winter, the test site is in the northeast of the mainland, and the outdoor temperature has reached -30 °C, which is almost the lowest temperature environment that domestic electric vehicle owners can encounter.
The test section mainly contains three parts, namely low temperature charging, low temperature endurance and outdoor low temperature power loss, the test vehicle is the mainstream domestic popular new energy model, and the test standard is to run the vehicle to the complete nest, or the speed can not reach 30km/h is the end.
Before the test endurance set off, they first placed the vehicle outdoors at minus 20 ° C for 8 hours, and then tested the cold car charging. Immediately after the endurance test, a hot car charging test is performed.
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In the endurance test, it is divided into high-speed and low-speed sections, the ratio of the two is 6:4, and the fleet is used to ensure that the speed tends to be consistent.
Tests have found that many models have lower endurance than estimated, one of the reasons is that all vehicles have replaced snow tires, but the more important endurance attenuation comes from temperature-controlled energy consumption and the increase in energy consumption caused by low temperature and high wind resistance.
Among them, WM M6, Euler Good Cat and other models, compared with the official endurance, the discount rate is less than 50%, and the driving capacity is halved.
In addition, hongguang MINI EV and Baojun KiWi EV models have been separately arranged in the endurance test due to the limited speed of the vehicle.
Because of the limited power, the Hongguang MINI EV traveled more vulgar miles, and finally ended the test after driving 67km, and the air conditioner of the Hongguang MINI EV was almost in a state of no heating.
Combined with the summer test, the winter temperature is reduced, the mileage of the vehicle has a greater impact, the average temperature drops by 10 ° C, the mileage will have a significant attenuation, this test, the average discount rate of all vehicles, reached about 52%, so it can only meet a small part of the car scene.
In the cold and hot car test, it was found that the temperature control system is very obvious for the stability and efficiency of charging, especially for models equipped with lithium iron phosphate batteries, the temperature control system is the key to determining whether the vehicle can be charged normally.
At the same time, high-power charging piles, for the vehicle charging power also has a significant role, polar fox αS and BMW iX3, on the 120kW charging pile, charging power exceeds 90kW, which also recommends that users try to choose high-power charging pile charging.
Cold car endurance evaporation test, the vehicle is placed outdoors, simulating whether the vehicle stands still at night for a night, whether the endurance shrinkage will occur.
The results show that most vehicles have not experienced obvious endurance shrinkage problems, and the endurance decline is within 10km, but the most obvious is the Polar Fox Alpha S, which loses power 53km overnight, which is relatively high.
In addition, the test also found a problem, after a night of outdoor stationary, the vehicle's 12V small battery, and even a power loss situation, the power battery of the electric vehicle, can not directly power the small battery, so the vehicle can not start the situation.