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Recently, academicians of the Chinese Academy of Sciences responded to the controversy of "Super Fast charging + Ultra-long range + Super Safety, impossible to achieve at the same time" at the 2021 China Electric vehicle 100-person Forum. GAC GROUP issued another announcement a few days ago, saying: "8-minute fast charge" and "1000 km range" are actually two different technologies and can be realized.

GAC GROUP also participated in this "scuffle" after solid-state batteries and silicon-doped lithium technology batteries released by car companies such as Xilai and SAIC Zhiji Automobile respectively praised that they would carry batteries with a range of more than 1000 kilometers. On Jan. 15, GAC Ean posted a poster via its official Weibo showing that its model with a graphene-based super fast-charging battery can be recharged 80% in eight minutes, has a range of up to 1000km, and is about to be put into mass production.

For a time, technologies such as solid-state batteries, silicon-doped lithium batteries and graphene batteries quickly detonated the automotive industry. Under the influence of this black technology, GAC GROUP's two markets rose sharply on the same day, A shares rose by the daily limit, while Hong Kong stocks closed up 19.5%, with a turnover of 1 billion yuan and 3.7 billion yuan respectively.

Although these technologies are possible, they are difficult to achieve in the eyes of experts. At the China Electric vehicle hundred people Forum (2021) held on January 16, Ouyang Minggao, academician of the Chinese Academy of Sciences and vice president of the China Electric vehicle 100 people Association, said bluntly: "if someone says, it can run 1000 kilometers." and it can be recharged in a few minutes, and it's particularly safe, and the cost is very low. Then you don't have to believe it, because it can't be achieved at the same time at the moment. "

In response to Ouyang Minggao's statement, it immediately made the outside world feel that this "spearhead" was directed at GAC Ean. From the poster released by GAC Ean, we can see that "80% can be filled in 8 minutes", "NEDC has a range of 1000 km", and "the most stringent safety test in history-battery shooting test" is exactly what Ouyang Minggao mentioned as "super fast charge + super long range + super complete".

Gu Huinan, general manager of GAC Ean, responded to the controversy over "graphene-based batteries and 1000km long-range electric vehicles" on January 17, saying that people ignored what Ouyang Minggao mentioned was that it was impossible to meet super fast charging + ultra-long range + super total cheapness at the same time, and everyone forgot about the cheapness.

At the same time, Gu Huinan also said: "this year, 1000km (electric vehicles) will definitely come out, and fast charging will definitely come out. 1000km's electric cars can be realized in theory, but the problem of charging piles should be solved." If it is the technology of the past, even with the charging pile, the battery can't stand it. So don't confuse technological breakthroughs with business promotion. "

GAC GROUP announced on January 18 that graphene-based super fast charging battery and long-lasting silicon negative battery are two different battery technologies, which solve the different pain points in the two power battery applications of "slow charging speed" and "short range" respectively. Both of them have entered the real car testing phase as planned and are expected to be installed on GAC's existing AION V and AION LX models respectively this year.

Because this announcement coincides with previous remarks made by Ouyang Minggao, an academician of the Chinese Academy of Sciences, at the China Electric vehicle Association of 100. In this regard, it was discussed by many netizens, including car commentators who commented that the handling of the incident by GAC Ean was not rigorous and pragmatic enough, and even changed concepts secretly.

But in fact, according to GAC GROUP's latest announcement, it can be seen that the split of its three major advantages can be achieved. For example, Gu Huinan believes that as long as the peak power of the charge can reach above 1000kW, as long as the graphene-based super fast charging battery (80% full in 8 minutes), as long as the battery can withstand it.

Today, there are media reports that GAC EA has set up a high-power super fast charging pile, and the parameters on the charging gun are marked as current 600A and voltage 1000V; the converted power is 600kW, which is more than twice that of Tesla V3 super charging pile, but GAC intends to launch it gradually, so it will be possible to realize this feature at that time.

The characteristics of the extended 1000km are more simple, regardless of other issues, as long as the battery capacity is large enough, the 1000km cruising mileage can also be achieved.

However, GAC officials had been negligent on the issue of publicity strategy, making consumers mistakenly think that the graphene-based technology to achieve super fast charging can be realized together with the technology to achieve super 1000km, causing consumers to question this technology. However, the poster released by GAC also clearly shows that the two technologies are supported by two types of batteries, namely, graphene-based super fast charging batteries and silicon negative batteries.

It is understood that GAC GROUP has studied graphene-based batteries for a long time. The research and development of graphene technology was launched as early as 2014. The data show that graphene material has the properties of light weight, high strength and super conductivity, so it is regarded as an important technology to improve battery charging speed and promote the progress of power battery technology.

However, the theory of graphene-based battery has never stopped, with the current technology, graphene-based battery or hype significance is far greater than the actual value. A senior engineer of the Ningde era said: in his understanding, graphene is most used as a conductive additive and has not yet seen any real graphene batteries. So the graphene-based super fast charging battery mentioned by GAC Ean, which may not be a graphene battery, still has a great sense of mystery.

Aiming at the concept of 1000 km range, Weima founder Shen Hui also said recently that "if mainstream models are equipped with batteries with a range of 1000 km, it will be a huge waste of social resources." If it is only two or three years later to achieve a range of 1000 kilometers, the final layout of the charging piles has been gradually improved, the problems of power exchange mode and fast charging mode have been solved, and 1000 kilometers of batteries are meaningless. "

At the same time, in Shen Hui's view, the realization of 1000 km battery can not form a very big technical barrier, only to deliver the core technology that users need, which is more meaningful than drawing a big cake.

The official reply on GAC has been hotly debated because the development of new energy vehicles in China is still in a steady development trend, and there is still some pressure to break through the shortcomings of new energy vehicles. In this environment, car companies should reasonably praise the new energy vehicle technology and give consumers enough confidence in order to achieve the healthy and stable development of the domestic new energy vehicle field.

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