Share with friends and circle of friends with wechat scan QR code < / P > < p > < p > surging journalist Cui Zhuzhu < / P > < p > < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E7%BB%AD%E8%88%AA "> endurance < / a > mileage is a barrier that new energy vehicles can never get around. < / P > < p > at present, the nominal range of new energy vehicles on sale in the market is mostly between 400km-600km, but recently, with auto companies successively claiming to launch 1000km range products, the domestic new energy vehicle range seems to leap into the era of 1000km. In December last year, Zhiji automobile, jointly built by SAIC, Zhangjiang hi tech and Ali, claimed to launch 1000 km range products within five years, with the technology of "silicon doped lithium battery cell" jointly developed by SAIC and Ningde times. It seems too long within five years. On January 9 this year, Weilai advanced the mass production time of 1000 km range products to the fourth quarter of next year, with the release of 150kwh < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E7%94%B5%E6%B1%A0 "> battery < / a > package, using mass production solid-state battery technology; GAC Group advanced the mass production time to within this year again, and its wholly-owned subsidiary GAC Eyan claimed on January 15 this year that the silicon negative battery NEDC has a driving range of 1000 km, making < a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6 "> electric vehicles < / a > enter the" era of monthly charging ". < / P > < p > the earlier and earlier mass production schedule has aroused doubts from the outside world about whether Weilai and GAC are suspected of selling "technology futures" and over hyping. However, despite the technical controversy, it is an indisputable fact that the stock prices of Weilai and GAC rose sharply after the publicity. < p > < p > January 16 academician of the Chinese Academy of Sciences < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E6%AC%A7%E9%98%B3%E6%98%8E%E9%AB%98 "> Ouyang Minggao's speech at the online forum of the 7th China electric vehicle 100 people's Congress pushed the above controversy to a new high:" if someone said that it can run 1000 kilometers and charge the electricity in a few minutes, it is also very safe and the cost is very low. You don't have to believe it, because this is an impossible problem. There has been no major breakthrough in this area in recent years. " < / P > < p > < b > capital hype? < / b > < / P > < p > academician Ouyang's expression has been interpreted by some people as academician directly "slapping" GAC. After all, a day ago, the official account of WeChat official of GAC, an official of WeChat, released a new poster of power battery technology. It was called graphene < / a > based super fast charging battery, which can be charged 80% in 8 minutes, and silicon negative battery NEDC has a driving range of 1000 km, making electric vehicles enter the" monthly charging era ". The poster also said that this new power battery technology has passed the battery shooting test and "will be carried in mass production soon, so we don't have to wait until next year.". < / P > < p > after the release of this poster, the outside world believed that the battery technology released by GAC could fill 80% in 8 minutes at the same time, and the NEDC could last 1000 kilometers. Therefore, the enthusiasm of the capital market was ignited instantly, and the stock price of GAC group quickly turned to the trading limit on that day. < / P > < p > however, it seems that this is not the case. In GAC's subsequent response and relevant statements, we slowly found that the fast charging and 1000 km endurance claimed by GAC are two different battery technologies, which can be realized on two different models, rather than being realized at the same time. On January 17, Gu Huinan, general manager of GAC e'an, responded to academician Ouyang's statement on whether or not he was slapping on the face. GAC group said that academician Ouyang's original words were that everyone was discussing battery technology progress, requiring fast charging, long battery life, safety and low cost. At present, it is still unrealistic, so supporting facilities such as energy storage equipment are needed. Gu Huinan hoped that everyone would not confuse technological breakthroughs with commercial promotion, and said that he would definitely push 1000 km range vehicles within this year. < / P > < p > GU Huinan also said that kuaicheng must come out. In his opinion, it is theoretically OK to charge 1000 km in 8 minutes, and the battery can bear it, but the problem of supporting charging piles should be solved. "In the past, even if there were charging piles, the batteries couldn't stand it. Can technology be promoted? Don't replace technology with something that is promoted. " < p > < p > GAC also issued an announcement two days later to clarify that graphene based super fast charging battery and long-term silicon negative battery are two different battery technologies, which respectively solve the different pain points of "slow charging speed" and "short driving range" in the application of power battery. The popularity of graphene based super fast charging battery depends on the release of relevant national super fast charging standards and the construction progress of high-power super charging equipment; the popularity of long-term silicon anode battery is affected by the total cost of battery and the acceptance of consumers, and the market demand is uncertain. < / P > < p > as to when 80% of the battery can be charged in 8 minutes and 1000 km of battery life can be achieved at the same time, Gu Huinan said in an interview with surging news on the 17th that the combination of graphene based battery and silicon negative battery can achieve fast charging and long battery life, which can be achieved by the end of this year. "But we will definitely promote these technologies in stages. We won't push all the technologies up in September. Then we can't bear the cost." < / P > < p > it is worth mentioning that on Monday, GAC group's A-share and H-share prices performed quite differently, with H-share falling nearly 10% at one time and closing down 8.1% at the end, while A-share rose 5.43% at one time. < / P > < p > Zhong Shi, an auto analyst, also said that in the notice issued by GAC, all concepts are fragmented, such as how many capacity batteries are charged to 80% and how large a battery is with a range of 1000 km. Therefore, GAC's notice is more just a gimmick for capital market speculation. In fact, it is more of an ideal concept. "For example, for a 1000 km endurance, the battery capacity is about 150 kwh, 80% is 120 kwh, and it can be fully charged in 8 minutes without loss of energy. The required charging point is 900 kW per hour. A 1250kva transformer is required for that charging pile, which is basically equivalent to the transformer of half a shopping mall. Where can I find such a charging pile? " < / P > < p > < strong > expert: the technology is feasible, but the storage cost, safety and other issues limit it. < / strong > < / P > < p > is the technology feasible for 1000 km endurance and fast charging, and can it have both? < p > < p > Zeng Yuqun, founder and chairman of Ningde times, who delivered a speech with Ouyang Minggao on the same day, said that the Bev battery pack developed by the company can achieve a service life of more than 1000 kilometers, 10 minutes of fast charging and 16 years of 2 million kilometers, basically solving the process anxiety, charging anxiety and life anxiety of consumers.

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2023-03-22 10:04:26