Recently, the release of the results of the pure electric range achievement rate of hybrid models in the winter test of Chedi has caused a lot of controversy in the industry, and many car companies participating in the evaluation have expressed their doubts about the test standards and results.
Yu Chengdong, Chairman of Huawei's Intelligent Vehicle Solution BU, said: "The test of pit people misleads the people!Science and rigor are the basic rules that should be followed!”。At the same time, "AITO Auto"** also issued a response, saying: "The relevant tests have repeatedly opened windows and doors for a long time under the conditions of severe cold and continuous heating of air conditioners, which seriously deviates from the real use scenarios of users. Since then, Great Wall Motors and Geely Automobile have also expressed their doubts about the unscientific and unrigorous evaluation process and standards. In response to the doubts of car companies, the official of Chedi also responded quickly, saying that this test is a full-load endurance test in extremely cold weather below -20, and all participating vehicles will set off in formation after maintenance, using a unified standard, in line with the user's winter car scene, and there is no discrimination.
The public says that the public is reasonable, the mother-in-law says that the mother-in-law is reasonable, and the car companies and the car emperor rushed to the hot search, reflecting that it is actually consumers' concerns about the winter endurance of new energy vehicles. Liu Shulong, a senior battery engineer at JAC, said that the results of this winter test of Chedi can cause such a big heat, indicating that the new energy market is getting more and more attention. At the same time, he said, "There are many reasons why the battery life of new energy vehicles will be greatly attenuated in extremely cold temperatures, such as the chemical properties of the battery and the physical properties of the materials, the increase in power consumption caused by the use of heating equipment in the car at low temperatures, and different driving Xi will also directly affect the driving range."
In this way, the degradation of the range of new energy vehicles in severe cold environments seems inevitable. So how do car companies respond to and solve this situation?Liu Shulong further elaborated that the chemical characteristics of the battery determine that the activity will be reduced in low temperature environments, so how to ensure the working temperature of the battery in a severe cold environment is the key to reduce the degradation of battery life. For example, JAC's Yttrium 3 is equipped with liquid-cooled honeycomb battery technology as standard, and the battery pack is always in the optimal working temperature range between 10 and 35 through the self-developed liquid-cooled constant temperature system, which greatly reduces the energy attenuation of the battery cell due to the influence of temperature and reduces the shrinkage of the mileage.
At the same time, Yttrium 3 is also equipped with a heat pump air conditioner developed by United States, which can intelligently distribute the heat of the passenger compartment, electric drive cabin and battery compartment through a double-layer 11-channel thermal management hub, improving energy efficiency by 50% and battery life by 25% in low temperature environments. It is worth mentioning that the Yttrium 3 is equipped with heat pump air conditioning as standard, which is the lowest price model on the market with heat pump air conditioning.
The Yttrium 3 standard with liquid-cooled honeycomb batteries and heat pump air conditioners in the whole series is highly anticipated in terms of winter range. It is reported that JAC Yttrium will conduct a yttrium 3 winter ice and snow test in the cold Heihe River in early January next year to verify the status of the vehicle in a severe cold environment, and recruit authoritative ** and real car owners to witness and participate. Let's look forward to the results to verify the true cold resistance of liquid-cooled honeycomb batteries, Midea heat pump air conditioners, and yttrium-3 in low temperature environments.