Share the QR code < / P > < p > with wechat scanning code to friends and circles of friends < / P > < p > < / P > < p > on March 25. A year ago, electric vehicle manufacturer Tesla said that electric vehicle replacement was "problematic and not suitable for promotion". However, electric vehicle manufacturers Weilai and Geely, power exchange technology developers Aodong and SINOPEC are vigorously promoting the power exchange business of electric vehicles as a supplement to the conventional charging mode of electric vehicles < p > the four companies said they planned to build 24000 replacement power stations nationwide by 2025. At present, the number of replacement power stations in the Chinese market is about 1400 < p > the electric vehicle driver can quickly replace the fully charged battery at the replacement station without inserting the vehicle into the charging pile and waiting for the battery to be fully charged. As more users start using electric vehicles, changing electricity may help ease the growing pressure on the power grid, but experts warn that the technology can be developed on a large scale only if batteries are standardized across the industry < p > if the Chinese market can successfully promote the power exchange mode on a large scale, this transformation may affect the business models of Tesla, Volkswagen and general motors. These brand electric vehicles are equipped with their own proprietary batteries, which can only be charged through the charging station. Tesla also built its own charging network for this purpose < p > for these auto manufacturers, the power change mode is bound to have a significant impact, because their future depends on their success in China, the world's largest auto market < p > by 2025, the sales volume of all electric vehicles will account for 25% of the total sales volume of China's automobile market. According to the current market volume forecast, the sales volume of passenger electric vehicles will exceed 6 million. But it is unclear how many of these electric vehicles will use replaceable batteries < p > many Chinese companies are also turning their attention to the overseas market < p > battery manufacturer Ningde Times said that the company not only developed the power exchange business in the Chinese market, but also "to meet the needs of the global market" < p > Ningde era supplies about half of the vehicle batteries in the Chinese market and accounts for more than 30% of the global electric vehicle batteries. "While we have accumulated experience in the Chinese market, we also communicate closely with our overseas partners. You will receive more specific information soon," the company said < p > Ganesh Iyer, head of Weilai's North American business, said that as one of China's largest electric vehicle manufacturers, Weilai plans to provide power replacement services to American customers by 2025. At present, Weilai has more than 800 replacement power stations in the Chinese market, and has just set up the first replacement power station in Europe < p > different views < / P > < p > this plan conflicts with the views expressed by Tesla last March. At that time, Tesla denied the feasibility of large-scale power exchange business in the Chinese market. A few years ago, Tesla tried the power exchange mode in the U.S. market, but later gave up < p > there are differences among industry executives on whether Chinese companies can overcome the psychological reluctance of European and American automobile manufacturers to give up their own battery design and adopt standardized design < p > "you'll never get carmakers to agree to use replaceable batteries," said Andy Palmer, former CEO of Aston Martin and current head of switch mobility, an electric vehicle manufacturer < p > John Holland, Europe and Middle East Business Director of momentum dynamics, a wireless charging company for electric vehicles, said that battery standardization would bring trouble to carmakers. He said, "in that case, how can your product be different?" < p > Tesla, general motors and Volkswagen said that there was no research on power exchange technology at present < p > a GM spokesman said that replaceable batteries "are not part of our current strategy" < p > a Volkswagen spokesman said that the company initially considered the power change technology to avoid users waiting for too long at the charging station, but the progress of fast charging technology and the reduction of battery cost led the company to focus on the latter < p > but VW said: "however, our strategists will pay close attention to and evaluate the competitive environment and developments in this field." < p > a Tesla spokesman did not immediately respond to requests for comment < p > in the rapidly developing field of automotive technology, both power change and conventional charging have their own critics and supporters < p > the convenience of battery replacement of electric scooters and electric bicycles has been verified in Asian and European markets, but applying this technology to larger and more complex cars and trucks has more challenges < p > now the public's concern about the time of power exchange mode has gradually disappeared. Wei Lai said that it has realized the automation of power exchange, and the whole process only takes 90 seconds < p > however, the more familiar charging technology started earlier, and a large number of charging piles have been established all over the world < p > car manufacturers are also constantly introducing electric vehicles equipped with improved batteries, which have longer mileage and shorter charging time, which will also affect the power change mode < p > last year, China issued the world's first technical standard for power replacement in the automotive industry, which came into force in November last year. It stipulates the safety requirements, test methods and inspection rules for replaceable battery electric vehicles < p > China aims to have more than 100000 replaceable battery electric vehicles and more than 1000 power stations in 11 cities in China by 2023. Among them, power exchange stations in big cities can exchange power for passenger cars and commercial vehicles at the same time, while power exchange stations in other cities focus on serving electric trucks < p > the key uncertainty is whether enough car manufacturers use standardized batteries. In the past 10 years, the challenge of battery standardization has hindered the development of power exchange mode. If this problem can be overcome, the power exchange technology can be popularized rapidly < p > the power change mode still has a long way to go. The power exchange service provided by Weilai to customers can only use the company's own battery. At present, only Weilai automobile users can use this service < p > Ningde times, which helped Weilai develop replaceable batteries, has signed a contract with China FAW, which has become the first customer of its evogo battery replacement service. Ningde times is expected to extend this service to other Chinese carmakers < p > according to a person close to Ningde times, Ningde times hopes that Chinese enterprises can accept its standard battery design, so that the company can provide services for multiple brand models by changing power stations. The person also said that Ningde times hopes that more car brands will adopt its standard battery design < p > Tu Le, managing director of Sino auto insights, a market consulting firm, said that Ningde era is "the largest and most important" in the field of electric vehicle batteries. He said, "theyIt can provide a lot of room to expand the business of power exchange stations, and the cost of using these power exchange stations is very low. " < p > at the same time, many Chinese companies are building power exchange station networks. Aodong new energy vehicle technology company, headquartered in Shanghai, said that the company is cooperating with automobile manufacturers to develop standardized batteries and with Sinopec to build replacement power stations for 30000 Sinopec gas stations by 2030 < p > overseas market < / P > < p > many industry experts said that although international automobile manufacturers may be reluctant to use replaceable batteries, they must adapt to relying on the business of the Chinese market to transfuse blood for the transformation of electric vehicles < p > the advocates of power exchange mode are also looking at the global market < p > Levi tillemann, head of policy and international business at the San Francisco based power exchange technology startup, said that the power exchange technology was "too convenient, too economical and too logical" to think that "it will not be used on a large scale in the European and American markets" < p > he added: "it's an incredible idea to imagine this phenomenon as a unique phenomenon in the Chinese market." < p > amplitude has raised $275 million from investors including shell, Repsol and ENEOS, raising its valuation to $1 billion < p > amber also carried out pilot projects with Uber, a car Hailing service company, and Sally, a car rental start-up. The company said it was developing power exchange technology in cooperation with several car manufacturers < p > Tillerman said: "since there are relatively few electric vehicles with high utilization rate, we can deploy and operate a profitable power exchange system." "So the team is our primary goal." (Chen Chen) < / P > < p >