TU-TESL

• 22

In this year, the endurance capacity and technical level of the mainstream electric vehicles on the market have made some progress. The endurance mileage of many models has exceeded 500km or even 600km, and the high energy density electric core has also achieved mass production and delivery. But it's just a matter of fact that we have to fight in the underground. It's winter time this year. This year, we will gather the mainstream and hot electric vehicles in the market again. We will work with China Automotive Engineering Research Institute to see whether they have made progress in all aspects and whether they can overcome the natural enemy of electric vehicles, cold? This year is the second season of our winter laboratory. Last year, we had 7 models participating in the experiment of the first season. If you want to learn something from the past, you can click the portal to check. This year, we gathered nine popular electric vehicles that will be launched in 2019, and came to Chongli, the main host of the 2022 Winter Olympic Games, to restore the real vehicle scene at about - 17 ℃. We inspected these models from the aspects of endurance, charging efficiency, air conditioning effect, etc., which are the most concerned. 1、 Who are the nine cars involved? (ranking in no order, in alphabetical order) beijing-eu7 (parameter | inquiry) is the latest model of EU Series. It is also the first batch of new cars after BAIC new energy changed its standard. Its endurance mileage has also been improved with its improved appearance. The car battery pack is equipped with intelligent temperature control system, which can realize remote control, charging preheating, driving heating, parking insulation, etc., and comprehensively ensure the battery stability. >Song Pro EV is a new vehicle launched in 2019 under the BYD E platform. The participating model is a high-power and high endurance version. The endurance mileage of MIIT is 502km. The group has a battery pre heating system. In September, the vehicle was tested under our EV ah-100 evaluation standard. The intercity high-speed endurance is 417km, and the urban low-speed endurance is 454km. What's its performance in winter? Aion LX (EA LX) 80 is equipped with 811 cell with high nickel ratio, and the battery capacity is not shown on the official website. However, according to the nameplate on the car body, the battery capacity is 93.09kwh. The battery pack is equipped with the fourth generation of intelligent temperature control system, which can use the liquid cooling system to heat the battery pack and the residual heat of the motor to heat the battery, so as to reduce the battery power consumption The air conditioning system is a heat pump system, which can further reduce consumption. Geometry a is the first model of its brand geometry. This time, it participated in the test of its long endurance version. The endurance mileage of the Ministry of industry and information technology is 500km, and the energy density of the battery pack has reached 182.44wh/kg. It is one of the earliest models in China that used the 811 battery pack with high nickel ratio in Ningde era. The battery pack has an intelligent temperature control management system, so that the battery pack always works in a proper temperature range. SAIC general micro blue is Buick Velite 6 in fact, but the 2020 models tested this time have upgraded the endurance mileage to 410km on the basis of 2019 models, and the battery pack of this car has an intelligent water cycle management system, which can preheat the battery in cold environment to ensure the normal operation of the battery pack. The G3 participated in this time is 2020 upgraded models, with a endurance mileage of 520km for the Ministry of industry and information technology. In summer, under our EV ah-100 evaluation standard, the intercity high-speed endurance capacity of the vehicle is 376km, and the urban low-speed endurance capacity is 486km. I don't know if the performance of the car can be the same as that of summer in this low temperature environment? It is the first mass production model of Vemma. This time, the test is the innovative 520 of Vemma Ex5 extra, and a 5000 yuan diesel heating package is optional. In Weima's Thermal Management 2.0 system, the diesel heating device can not only heat the battery, but also provide heat for the air conditioning system, which can reduce the battery power consumption in low temperature environment and provide longer endurance guarantee for winter vehicles. The model 3 long endurance rear wheel drive version is the model with the longest endurance mileage among Tesla Model 3 models. The vehicle Ministry of industry and information technology has a endurance mileage of 664km. It is also the model with the longest endurance mileage among the participating models. It has a battery constant temperature system, which can warm the battery at low temperature, so as to ensure the normal operation of the battery and extend its service life. ES6 has multiple endurance versions. This time, the performance version with a endurance mileage of 510km is tested. The car also has an intelligent temperature control system, which will heat the battery pack in severe cold temperature to ensure the normal operation of the battery. As can be seen from the above introduction of bicycles, the models participating in the winter lab span different levels and the prices are not the same, so the winter lab is different from the general "horizontal evaluation", and the biggest competitor of the models involved is themselves. This year, the number of participating models has increased from the previous seven to nine, and the participating car brands are more comprehensive, including not only Chinese brand models but also joint venture and brand models. The endurance mileage has also been comprehensively improved. Last year, the highest endurance mileage of the participating models was 420km, the lowest one was 410km, and the highest one was 664km. In addition, 9 models participated in this year have battery temperature control / pre heating system, which is more "base" for winter test. So what are the winter lab projects waiting for this year? 2、 What are the test items? This year's test projects include urban road endurance test, high-speed road endurance test, cold vehicle charging test, hot vehicle charging test, vehicle power failure test after full power outdoor use, low-temperature environment heating and air conditioning test and low-temperature environment dynamic acceleration performance test. In these tests, the engineers of CVR will also join in the cold and hot vehicle charging tests, using professional equipment to test the charging capacity, charging voltage, current and battery temperature of the vehicle, so as to observe the vehicle battery management strategy and see if these vehicles can maintain good condition in winter. This test involves a large number of data and charts, full of dry goods, so the test results are online by stages, and the online time of the endurance test is December 27. We will bring you the most concerned high-speed road / urban road endurance test, and see how these vehicles' endurance performance this year? In the future, we will divide it into cold / hot car charging, heating and air conditioning & static power failure, power acceleration, and keep updating. Welcome to click collect.