"Winter" battery life has shrunk significantly, attracting many car owners to complain and question
Why is the mileage displayed by the new energy vehicle far different from the actual driving situation?
"The actual driving distance is 113 kilometers, the displayed mileage is 289 kilometers, and the actual mileage is only more than one third of the displayed mileage." This is a bad thing that a new energy vehicle owner in Beijing encountered this week, but it is far too bad. He is far more than he alone.
Today, in the new energy vehicle market, a cruising range of more than 400 kilometers has become the mainstream.
However, when new energy vehicles are used in winter, the actual cruising range has generally shrunk significantly. This has attracted many car owners’ complaints and questions: Why is the displayed mileage so far from the actual driving situation? How does the manufacturer’s claimed cruising range “run” "from?
"It was fully charged on December 12, showing a cruising range of 400 kilometers; on December 14, after driving 113 kilometers, the remaining cruising range was 101 kilometers. This means that the vehicle can only run up to 214 kilometers." This in Chaoyang District, Beijing A new energy vehicle owner drove a domestic brand new energy vehicle with a "comprehensive cruising range of 400 kilometers". In zero degrees Celsius weather, the car’s air-conditioning heater was turned on to second gear and only in the city.
He expressed confusion and dissatisfaction with such endurance performance.
A few days ago, the actual winter endurance test of new energy vehicles organized by several well-known domestic automobile websites showed that the actual endurance of new energy vehicles of various manufacturers was significantly reduced compared with the “comprehensive cruising range” marked by the car in the low temperature environment with the air-conditioning in the car. , Some cars' battery life has shrunk by more than half.
According to data released by the National Automotive Technology Research Center, the key factors affecting the cruising range of electric vehicles in winter are outdoor temperature and air conditioning energy consumption.
The test results show that under the condition of minus 7 degrees Celsius outdoors and 22 degrees Celsius inside the car, the average cruising range of new energy vehicles will drop by 39%, and some vehicles without battery temperature control systems will drop by 60%.
It is understood that at present, new energy vehicles mainly use ternary lithium batteries and lithium iron phosphate batteries as power batteries, and their electrochemical properties and material physical properties determine that the cruising range will inevitably be shortened at low temperatures.
"Since this is an objective law, why do manufacturers only mark the comprehensive cruising range during sales promotion, and the comprehensive cruising range does not comprehensively consider the winter situation?" This has become a common question for many new energy vehicle owners.
The reporter visited the Beijing New Energy Vehicle Market and found that the various new energy vehicles currently on sale generally put the "comprehensive cruising range" prominently in capitals. The 400-kilometer range has become the mainstream model, and the range of some models has even exceeded 700 kilometers.
How is the cruising range of these vehicles derived?
It is understood that at present, the comprehensive cruising range of domestic new energy vehicles is mostly marked by the Ministry of Industry and Information Technology.
The mileage refers to the maximum mileage announced by the website of the Ministry of Industry and Information Technology of the People's Republic of China. In the pure electric mode, the car only relies on the battery power to support the maximum mileage of the car. The domestic data is based on NEDC (New European Driving Cycle) operating conditions. And define.
"Although it is said to be'New Europe', it is actually a version 20 years ago and not new. In the NEDC operating condition test, 4 urban loops and 1 suburban loop test are included. The key to the problem is that they are all It is carried out in the laboratory. Compared with the complex driving environment in reality, it is still a kind of ideal working condition test." An insider told reporters.
In this regard, Li Mengliang, senior chief expert of China Automotive Technology and Research Center Co., Ltd., once revealed that the "Chinese operating conditions" standard that can truly reflect the driving range of electric vehicles is being promoted. After 2025, China operating conditions will replace NEDC in domestic applications. All models.
Deng Qifan