Super Fast Charging Battery Technology Is The First Choice For Charging New Energy Vehicles

If the world's new energy vehicles want to be popularized in a large area, then their charging or battery life must overcome the bottleneck of the past, and the main reason why new energy vehicles cannot be widely accepted in super first-tier cities such as Beijing, Shanghai, Guangzhou, Shenzhen, etc. It is that its infrastructure construction cannot keep up, such as charging, service, after-sales, security, etc. So today we will talk about our personal views on the point of charging.

At present, there are three main charging methods for mainstream new energy vehicles on the market: one is super fast charging, the other is battery replacement (which is used by NIO), and the third is ordinary slow charging. So which of these three modes is the real charging mode for future new energy vehicles? That answer appeared to have an answer at a meeting on May 25.

On May 25, the China Electric Vehicle Charging Infrastructure Promotion Alliance (referred to as "China Charging Alliance") under the guidance of the National Energy Administration was formally established. The alliance brings together top experts in the industry, research institutions and leading companies such as power grid companies, charging operators, service providers, and auto manufacturers, aiming to accelerate the development of charging technology and the construction of infrastructure in China.

The inaugural meeting was held in GAC Aian. The association was established in the morning, and in the afternoon, the first meeting of the association was held with the theme of "Electric Vehicle Fast Charging Demand and Industry Preparation Docking". It is reported that the main purpose of this meeting is for the release of China's new energy electric vehicle charging policy has come to find out in advance. In other words, the content of this meeting is likely to determine the charging mode of China's new energy electric vehicles in the future.

Participants in this meeting were mainly three parties, Dong Yang, chairman of the sponsor Charging Alliance, Xu Yanhua, secretary-general, etc., representatives of car companies such as Weilai Automobile, Xiaopeng Automobile, Geely Automobile, BYD Automobile, Changan Automobile, GAC Aian, Dongfeng Lan Figure, BAIC New Energy, Daimler Automobile and other large car companies, in addition to the above third-party charging operators, such as Huawei Smart Car Charging, Juwan Technology Research, Telecom, Wanpian, YTPIONEER and other mainstream charging operators in the market.

Among them, GAC Aian introduced its own charging promotion, which is based on fast charging, supplemented by battery replacement, and vehicle pile coordination. It plans to build 2,000 super charging stations by the end of 2025, and 50,000 private piles will be shared, covering 300 cities. .

Dongfeng Lantu, Daimler, Geely, Weilai Automobile, Xiaopeng Automobile, Geely Automobile and other car companies have also introduced their progress in the field of super fast charging and battery replacement. Surprisingly, apart from Weilai Automobile, other Car companies, including third-party charging operators, are vigorously developing super fast charging battery technology.

After this meeting, I personally think that the main content of the policy on China’s new energy electric vehicle charging facilities issued by the Ministry of Industry and Information Technology in the second half of the year will be: super fast charging, supplemented by slow charging, and coexistence of three modes of battery replacement. The main reasons are: There are three points:

1. The research and development of super fast charging technology has matured

On April 9 this year, GAC released the super fast charging battery technology that can charge 80% in 8 minutes, and live broadcasted the demonstration result that the battery can be charged to 80% in 7 minutes and 45 seconds, and the battery power has also passed Heihe, Heilongjiang, minus 30 degrees. test. Followed by BYD Automobile, BAIC New Energy, Huawei, Geely Automobile, Volkswagen, Lixiang Automobile, Porsche, Hyundai Motor and BMW, etc. are all developing super fast charging technology with a voltage of 600V and 400A or more, and all of them have relatively clear plans. The launch time plan, so the super fast charging technology is the direction that car companies have already tackled. Of course, national policies must be formulated according to market demand.

Secondly, the direction of global new energy vehicle charging is also developing in the direction of high power, or is advancing or the goal has been clarified, so super fast charging is the future development direction.

2. Slow charging is suitable for multiple scenarios of private users

It is also very difficult to realize super fast charging technology in the short term, because the biggest difficulty of super fast charging technology is ultra-high voltage and super high current, because only some commercial and specified areas in the city have such high voltage and current requirements. In order to establish super fast charging stations in many places in the city, it may be necessary to consider the laying of cables. Secondly, when a city builds so many super charging stations, when summer comes, all these charging facilities will collectively operate, which will bring new challenges to the city's electricity. Can the city's electricity be able to afford it? This is another question that requires careful calculation and verification. Finally, there are so many super charging stations distributed in every corner of the city, are they safe? Does it have corresponding safety or fire-fighting capabilities, and can it be eliminated in time when it has an unexpected situation (such as an earthquake, etc.). Otherwise, these are uncertain time bombs, posing a certain threat to the safety of the city.

For ordinary users, super fast charging is not the only choice, on the contrary, private slow charging suitable for home use is the best choice. Because the needs of ordinary people's electric vehicles are daily transportation and occasional self-driving tours, so in the city, the battery life of electric vehicles in the current market is basically about 600 kilometers. Calculated by driving 80 kilometers a day, the mileage required for working days is 400 kilometers. Kilometers, the current battery life of new energy vehicles has fully met the daily needs of users, and there is no so-called battery life anxiety at all. Secondly, if the battery life of the vehicle is not enough, you can return home after get off work at night. Currently, the power of home charging piles is around 3.5kW-7kW, and it takes about 7 or 3 hours to fully charge. It can be fully charged when you sleep at night or go shopping on weekends. And it is safer, and there is no need for such a large charging pile. The difficulty of home charging piles is that the parking spaces in some communities do not allow or do not have the conditions to install charging piles. On the one hand, relevant state departments and property owners need to find a solution.

3. It’s good to have battery replacement mode coexist, depending on the user’s choice

In order to implement the battery replacement mode on a large scale, it first requires the relevant national departments to issue relevant policies to unify standards such as battery size, shape, and battery capacity. This is contrary to the concept of diversified development of automobiles. After all, it is impossible A luxury car battery worth 100,000 yuan is the same as a new energy vehicle battery worth less than 100,000 yuan. Secondly, for car manufacturing companies, the battery replacement mode is too restrictive for car companies to design models, which is equivalent to a second design for car companies based on almost the same chassis, which is quite difficult. At present, all car companies have their own pure electric car manufacturing platforms, and it is impossible to spend money to adjust this. Therefore, I personally think that the battery swap mode of Weilai Automobile is difficult to promote on a large scale.