[Introduction: The range and energy replenishment time have always been the "rivals" that plague the development of electric car . In fact, the current range of electric vehicles is enough to meet the needs of Volkswagen. After all, fuel vehicles only have a range of 6 or 700 kilometers. Therefore, the key to the problem is the time to replenish energy. In order to improve the charging efficiency of electric vehicles and save time spent on charging, ultra-fast charging came into being. Now, relevant companies are accelerating the layout of ultra-fast charging. Can ultrafast charging really solve "charging anxiety"? 】
Written by | Cai Jialun, editor | Hezi
Now, new energy vehicles have become the "hot commodity" in the automotive industry. When people consider a new energy vehicle, they pay more attention to its range, intelligent configuration and other aspects. At the same time, battery life and energy replenishment are currently problems that limit the development of new energy vehicles. How to solve this problem? Electric vehicles have ushered in a new winning magic weapon, which is super fast charging technology.
layout of ultrafast charging has become the general trend
In order to effectively alleviate users' "energy-energy anxiety", many related companies in the automotive industry have begun to accelerate the construction of ultrafast charging.
At this stage, the ultrafast charging construction promoted by relevant companies is gradually increasing the charging ratio from 1C-2C to 4C-6C. In this way, the corresponding charging time can also be greatly reduced. For example, it may have taken nearly half an hour to charge the battery from 30% to 80%, and it may only take about 5 minutes after upgrading the ultra-fast charging.
actually wants to achieve ultrafast charging, it just starts from the current and voltage. For example, 200kW supercharge, under the current 400V platform, the peak current needs to be increased to 500A+. However, if you want to achieve ultra-fast charging at 400kW level, the voltage during charging must be upgraded to 800V, and the maximum current can reach more than 500A. The ultrafast charging power of Xiaopeng Motors is larger, directly increasing to 480kW, and a larger voltage is needed to match it, so the voltage of Xiaopeng's ultrafast charging is 800V, and the maximum current value reaches more than 670A. In fact, if the peak charging power reaches 400kW, it is already large enough. What is the concept of 400kW? Let me analyze it below.
Generally, pure electric cars have a battery capacity of only about 50 kilowatt-hours. If the battery is based on the power of 400kW of ultra-fast charging when charging, it only takes about 20 minutes to fully charge. However, due to safety and battery life and other considerations, the current power batteries cannot support full-power charging throughout the process. However, using high-power charging can achieve the effect of charging for 5 minutes and a range of 200 kilometers.
Many people think that this is not something that can be fully charged immediately, and such a fast charging speed is not very meaningful. However, if the power is suddenly in urgent need of charging for 5 minutes, it is enough to meet the emergency needs. Although it is impossible to fully charge the battery in a short time, as long as the emergency replenishment is completed, you can go home and recharge again, which greatly saves time.
Accelerate the layout and construction of super fast charging
In the fast charging technology level, GAC Aion is at the forefront. With its 480kW ultra-fast charging charging pile and super-speed battery, pure electric cars under Aian can easily charge for 5 minutes and have a range of more than 200 kilometers. In fact, GAC Aion has long planned and made plans for ultrafast charging: in April this year, GAC Aion reached cooperation with Southern Power Grid , Huawei and other companies, and took the lead in launching the construction of ultrafast charging in Guangzhou.
In addition to its own brands, new car manufacturing forces are also actively making efforts in the field of ultra-fast charging. Xiaopeng Super Energy Replenishment Press Conference released the S4 ultrafast charging pile. This charging pile can reach a maximum output power of 480kW, and the limit value of the output current of its single pile reaches 670A. With the support of this ultra-fast charging pile, the Xiaopeng G9 can charge in only 5 minutes and the battery life can reach 200km. In terms of more important charging infrastructure layout, Xiaopeng Motors plans to build another 2,000 ultra-fast charging stations by 2025.
Among the new forces in car manufacturing, not only Xiaopeng is promoting the ultra-fast charging layout, but Ideal is also accelerating the pace of R&D. Li Xiang said that the current ultrafast charging technology can meet a range of 400 kilometers and only requires 10 minutes of charging. But this is just data in the laboratory, and the specific implementation remains to be investigated. In addition, Li Xiang said that this model equipped with ultra-fast charging will have more room than the extended-range model and is expected to be launched and sold in 2023.
, the first product of Avita , which was officially launched recently, also showed off its super fast charging technology. The 750V high-voltage fast charging platform jointly created by CATL and Changan Automobile can achieve 10 minutes of charging and increase the range of 200 kilometers.
can be seen that after these new car-making forces have established a foothold in the market, they have begun to charge towards the super-fast charging network layout of super-charge models. However, one thing that needs special attention is that in order to achieve super fast charging, it not only needs the support of matching charging piles, but also needs to reconfigure the battery pack, PTC, electric drive, air conditioner, etc. This brings new opportunities to relevant car companies, but also new challenges.
When the automobile industry is focusing on the blue ocean of ultra-fast charging, the related supporting industries of automobiles naturally dare not show weakness and enter the market with strong strength. At the end of August, the Lotus Super Charging Station built by Sinopec was officially put into use, which is Sinopec's first community supercharging station in the country. It is reported that the first Lotus Super Charging Station in the country covers an area of about 4,800 square meters, and can replenish energy for 24 electric vehicles at the same time. It is also understood that it only takes 25 minutes for a pure electric car with a range of 400 kilometers to be charged from zero to full charge at this supercharge station.
Comments
Nowadays, many automobile-related companies have begun to deploy high-voltage fast charging, and the "charging anxiety" will be solved by then. We look forward to the near future, with the popularity of super charging stations, "charging anxiety" will no longer become a problem that plagues consumers' purchase of new energy electric vehicles. This is definitely good news for the development of pure electric models. As the charging time continues to shorten, the biggest difficulties of pure electric models will be gradually solved, and fuel vehicles are just around the corner.
(This article is original by "Heyan Yueche" and may not be reproduced without authorization)
