The propaganda notice of GAC Aeon has questioned whether the academician of the Chinese Academy of Sciences said that it is "safe and low cost". It is currently impossible to
charge 80% of the car's energy production in the second half of the year in 8 minutes
"80% charge in 8 minutes", "1000 kilometers of cruising range", "make charging as convenient as refueling"... Recently, GAC Ion released a very explosive propaganda notice that instantly ignited the new energy battery market.
Once the news was released, GAC Group A shares directly rose by the limit, and many battery companies also rose sharply.
However, this notice has also been questioned by many industry experts. Ouyang Minggao, an academician of the Chinese Academy of Sciences, said in his speech: "If someone tells you, this car can run 1,000 kilometers and can be fully charged in a few minutes, and it is safe. The cost is very low. With current technology, he must be a liar."
So is a new energy vehicle that can charge for 8 minutes and endure 1,000 kilometers, is it a high-tech or a new gimmick?
GAC: Make charging as convenient as refueling
On January 16, Zeng Qinghong, Secretary of the Party Committee and Chairman of Guangzhou Automobile Group, announced that GAC’s graphene-based super fast rechargeable battery has now entered the stage of mass production testing. The first model is AION V, which is currently undergoing winter testing in Heihe. It is scheduled to be mass-produced in September this year.
According to GAC Group, the company’s graphene fast charge battery has a 6C fast charge capability, combined with high-power overcharge equipment, can be charged to 80% as fast as 8 minutes, combined with silicon anode materials, the energy density can be increased to 280Wh/kg About, the life span is more than 1600 cycles, and the vehicle mileage can reach 1000 kilometers.
GAC Ian said that detailed information on the battery is planned to be announced at the end of this month.
Prior to this, GAC Ian, a wholly-owned subsidiary of GAC Group, released a poster about the new power battery technology.
The poster shows that its graphene-based super fast-charge battery has undergone battery gun shooting experiments, and emphasizes that “do not wait until next year” and “will be mass-produced soon.
As soon as the news came out, GAC Group’s A-shares rose at an intraday limit and closed at 12.52 yuan per share, with a full-day turnover of 1.02 billion yuan; Hong Kong stocks rose sharply in late trading and closed at 9.38 Hong Kong dollars per share; at the same time, new energy vehicle concept stocks and graphite The olefin concept stocks have risen.
Whether the graphene battery is reliable or not has attracted extensive discussion.
Academician: Questioning "You can run thousands of kilometers in a few minutes on a charge"
At the China Electric Vehicle Hundreds Association Forum (2021), Ouyang Minggao, academician of the Chinese Academy of Sciences and vice chairman of the China Electric Vehicles Hundreds Association, said in his speech: "If someone says that it can run 1,000 kilometers, but also a few minutes. After charging, it is also particularly safe and the cost is particularly low, so don’t believe it, because this is impossible at the moment." Ouyang Minggao’s point of view points directly to GAC, which has received much attention for graphene super fast charging batteries. group.
In response to the academician and the outside world’s doubts, Gu Huinan, general manager of GAC Aian New Energy Automobile Co., Ltd., responded at the China Electric Vehicle Hundreds Conference Forum: “As for Ouyang Minggao, everyone should pay attention and don’t understand it. This requires another, and it’s cheaper. This is definitely not possible. The 8-minute fast charge is not just a battery issue, but also related to the charging pile. Do not confuse technical issues with promotion and operation issues."
Gu Huinan said: "This year, a car with a 1,000-km battery life will definitely come out, but the cost will not be low. The graphene-based technology that can fill up to 80% in 8 minutes and the long-lasting silicon-based battery are two technologies, but they can be technically realized. All things considered, just consider the cost and pace of operation and promotion."
Industry: Graphene batteries are difficult to mass produce in the short term
Whether the graphene battery is reliable or not has attracted extensive discussion.
There is a view that graphene can increase the charge and discharge rate in theory, but the actual application effect remains to be verified.
Another point of view pointed out that the so-called "graphene battery" is just a "gimmick" made by GAC for "money money."
Zhang Xiang, an automotive analyst, said that graphene has been invented for a total of 10 years, and the concept of graphene for new energy vehicles was only proposed in the past two years.
Currently, there are two main directions for integrating graphene into the battery industry, one is as a conductive additive, and the other is as a negative electrode material.
If the power battery uses graphene as the main material of the negative electrode, the cost of electric vehicles will be very high.
If used as an additive, although the cost can be accepted, it does not improve the battery much.
Zhang Xiang pointed out that graphene batteries are currently only in the laboratory stage and the technology is not mature.
Generally, new battery technologies will first be applied in 3C products, home appliances, etc., and then applied to automobiles. Therefore, the application of graphene batteries to mass-produced cars faces many challenges.
Therefore, the possibility of mass production in the short term is not great, and it is more that enterprises are taking the opportunity to speculate.
Zhong Shi, an automobile analyst, said that the various concepts in the notice issued by GAC are fragmented, such as how much battery capacity is charged to 80%, and the range of 1,000 kilometers is how big a battery is.
Therefore, GAC’s forecast is more of a gimmick for the capital market. In fact, it is more of an ideal concept. For example, with a battery life of 1000 kilometers, the battery capacity is about 150kwh, 80% is 120kwh, 8 minutes It can be fully charged without loss of energy. The charging pile required is 900kw per hour.
That charging pile needs to be equipped with a 1250kva transformer, which is basically equivalent to a transformer in half a shopping mall.
RAM
GAC accelerates the advancement of graphene batteries
Public information shows that graphene materials have properties such as light weight, high strength, and super conductivity, and are also regarded as an important technology to improve battery charging speed and promote the advancement of power battery technology.
Graphene battery is a new energy battery developed by using the characteristics of rapid and massive shuttle movement of lithium ions between the graphene surface and electrodes.
This battery has the advantages of long service life and light weight, and its power storage is three times that of the best products on the market.
It is understood that GAC Group has started the research and development of graphene technology since 2014. At present, it has initially mastered the preparation and application technology of three-dimensional graphene (3DG) materials with independent intellectual property rights. The related graphene technology has been patented, covering Graphene preparation, supercapacitors, fast charging batteries and other technical fields.
As early as May 2020, GAC Group introduced the development of the above-mentioned graphene battery. The "super fast charging battery" developed based on GAC 3DG material can charge the battery to 85% in only 8 minutes. The refueling time of traditional fuel vehicles is comparable.
At the GAC Technology Day last year, Feng Xingya, General Manager of GAC Group, stated that in order to better promote the commercial application of graphene technology, a graphene high-tech industrialization company will be jointly established by GAC investment + employee holding investment.
In November last year, GAC Group revealed on the interactive platform that the research and development of graphene batteries is continuing, and it is expected that this technology will be put into mass production testing by the end of 2020, but whether mass production can finally be realized still needs to wait for the actual vehicle verification results. .