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Original title: All have a thousand kilometer battery life Why is GAC New Energy being hotly debated?
“If someone tells you that this car can go 1,000 kilometers, it can be fully charged in a few minutes and it is safe.costIt is very low. In terms of current technology, you must be a liar. “The speech given by Ouyang Minggao, a member of the Chinese Academy of Sciences, at the Forum of the China Electric Vehicle Association a few days ago caused a wave of waves. In fact, Ouyang Minggao’s speech also reflects the new vehicles. current energy.Car permitThe status quo of anxiety.
New energy vehicles may usher in the first “1,000 kilometer” year
Since the beginning of this month,Wei LaiSince the news broke that its new ET7 model has a battery life of 1,000 kilometers, New EnergyCar industryMark the beginning of “fidgeting.”
Last Monday,BaiduPost announcing thatGeely carBuild a smart carthe companyTo the whole vehiclemakerMarching towardsCar industry. Casually,AppleIt also announced on the same day that it plans to jointly develop autonomous electric vehicles with Hyundai Motor.SAIC、Zhangjiang High TechwithAlibabaThe group’s tripartite joint effort to build a smart car also took place last Wednesday.BrandThe press conference will be equipped with a “supplemental silicon-doped lithium battery”, and the maximum cruising range will exceed 1,000 kilometers.
And last Friday, GAC Ion even released a poster claiming that this year it will mass produce a model equipped with graphene-based super-fast rechargeable batteries. The model can be fully charged with 80% power in 8 minutes and has a cruising range of 1,000 kilometers. With the support of technologies such as “Complete 80% of electricity in 8 minutes” and other technologies to solve the anxiety of new energy supplements, GAC is without a doubt a new source of energy.marketPut a dose of cardiotonic.
Benefit from this,GAC GroupA crotchIt ushered in the daily limit after the losing streak last Thursday and closed at 12.52 yuan per share last Friday;Hong Kong StockSynchronously it rose almost 19.49% to close at 9.38Hong Kong dollar/share.
Fully charged with 80% power in 8 minutes caused a heated discussion
Judging from the news released by the major new energy car companies in 2021, the car companies have basically announced the pain points of increasing cruise range, shortening charging time and improving the construction of charging facilities. highlights of new energy vehicle battery technology are emerging one after another.Wei LaiAfter the introduction of “solid state battery technology” in automobiles, GAC Aian said that the new models use “graphene-based batteries.” Will new energy vehicle batteries usher in a revolution?
Ouyang Minggao, an academic at the Chinese Academy of Sciences, recently stated at the China Electric Vehicle Hundreds Conference that innovation in battery material must balance conflicting performance indicators such as power, life, fast charge, safety and cost. There have been no great advances in recent years. “If someone tells you this car can go 1,000 kilometers, it can be fully charged in a few minutes, it is safe and the cost is very low. In terms of current technology, it must be a liar.”
Some media reports said that the speech by Ouyang Minggao, an academic at the Chinese Academy of Sciences, pointed directly to the preview of the new car issued by GAC E’an last Friday.
In fact, the aboveWei LaiAutomobiles, Zhiji Auto, GAC Ian and other automakers stated that future models will reach a range of 1,000 kilometers, but only GAC Ian stated that its battery technology can be charged to 80% in 8 minutes, which means that GAC Ian it can be equivalent to fuel. The car is average and can be supplied with a battery life of 800 kilometers in a few minutes.strategySexual meaning.
As we all know, behind the anxiety about the range of new energy vehicles is actually the anxiety about the energy supplement of electric vehicles, which also makes GAC E’an one of the reasons for this heated discussion.
GAC AianGeneral ManagerGu Huinan also responded at the meeting, saying that Academician Ouyang’s original words also included cost factors, so they should not be taken out of context. Gu Huinan said that an electric car with fast-charging technology and a cruising range of up to 1,000 kilometers will be released this year, but it should not be overlooked that the cost will not be low, and that technical problems should not be confused. with those of promotion and operation.
Furthermore, Guangzhou Automobile GroupShareLimited liability companySecretary of the Party Committee,directorChief Zeng Qinghong revealed at the China Electric Vehicle Hundreds Conference that GAC’s graphene-based super fast charging battery has entered the real carproofstage. AION V will be the first model to be equipped with a fast-charging battery. It is currently undergoing winter testing in Heihe and is tentatively scheduled for mass production in September this year.
Industry: Battery technology has not undergone a “qualitative change”
If GAC AION V succeeds in mass production, the new energy vehicles will usher in the first “1,000 kilometer” year. However, how much innovation in battery technology contributes to the endurance of new energy vehicles is quite questionable in the industry.
Insiders said there is no qualitative advance in the current state of electrochemical technology. It is mainly through local structural innovation to increase volume density or energy density. Increasing available battery power is the primary means of improving battery life.
Industrial valuesDianxinteamSaid the battery presented by Weilai Automobile was a primary semi-solidproductAlthough the safety performance is improved, electrolytes and base film are still needed. Solid-state batteries today face two major problems. One is the problem of the “solid-solid” interface contact, which has high internal resistance and poor cycle and speed performance; the other is the need to improve the conductivity of the solid electrolyte.to get betterThe interface between the solid electrolyte and the positive and negative electrodes reduces internal resistance.
Frei Liu, Ph.D. in Materials Science and Engineering from Tsinghua University, said on social media that “graphene battery technology” is almost non-existent. Graphene can only theoretically increase the charge and discharge rate, but does not help the capacity increase. The importance of the trick is much greater than the practical value, and the high specific surface area of the graphene material itself is similar to that of today’s lithium-ion batteries.industryThe technological system is not compatible and the hopes of application are very low.
(Source: Southern Metropolis Daily)
(Editor in charge: DF537)
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