The most popular way to change electricity is to c

Change the electric energy to open up the new energy vehicle Ren Du pulse

many car owners have been complaining about the difficulty of charging. In the urban area, the number of charging piles is small, the waiting in line and the long charging time make the car owners feel helpless. What makes the car owners more upset is that some charging piles are incompatible. It is their turn to charge after waiting for two hours, but their car can't charge anyway

charging problems cause many consumers to suffer from mileage anxiety. Dare not drive to remote places; Because the electricity can only be charged in the rest area of the highway, I dare not take the second-class highway for long-distance travel. Some car owners even suffer from obsessive-compulsive disorder. As long as they drive, they will constantly see how many kilometers they can walk, even if they have just recharged

therefore, many enterprises are exploring different charging modes, such as power change mode. The power change mode can make the electric vehicle "come back to life with blood" in 3-5 minutes. Even in remote places, the mobile electric vehicle can reach out to help solve the worries of consumers during long-distance travel. The power change mode has hit the pain point of electric vehicles, and many automobile enterprises have their eyes on the power change mode, but can the power change mode really open up the "Ren Du pulse" of new energy vehicles? What are the limitations of this model

many car companies have their eyes on the power exchange mode

the earliest promoter of the power exchange mode is the Israeli electric vehicle manufacturer better place, which later introduced this mode into the Chinese market and built the first power exchange station in Guangzhou. Therefore, this mode has attracted widespread attention in the domestic automotive industry

at present, better place has gone bankrupt, but the power exchange mode is still favored by some automobile enterprises, Lifan automobile is one of them. On May 6, Lifan shares disclosed the fixed increase plan, and the company plans to raise a total of no more than 2.48 billion yuan to invest in new energy vehicle projects. The construction of power exchange station is one of the main objectives of this fund-raising. "Intelligent new energy vehicle energy station project" and "intelligent lightweight quick change pure electric vehicle platform opening project" are the main construction projects for fund-raising. Lifan Co., Ltd. will take "energy station" as the core to promote the development of power exchange mode, so as to create a complete intelligent new energy vehicle industry chain

as one of the leading enterprises of new energy vehicles in China, BAIC bjev is also optimistic about the power exchange mode. In November last year, BAIC bjev released the "Optimus Prime plan". "By 2022, the Optimus Prime plan is expected to invest 10billion yuan to build 3000 optical storage and exchange power stations nationwide, put 500000 replacement trams in total, and use more than 5gwh of echelon energy storage batteries." Zhang Yong, former deputy general manager of BAIC new energy, once said

according to the plan of BAIC bjev, the "Optimus Prime plan" will be implemented in three stages:

the first stage (2016-2017) will be the joint construction of the power plant by BAIC bjev, Aodong new energy and taxi companies, the initial establishment of public travel operation platform and echelon energy storage and operation platform, the establishment of urban energy interconnection centered on optical energy storage power plant, the completion of 100 power stations and the operation of more than 4000 vehicles, Realize the comprehensive utilization of 100mwh (100000 KWH) of echelon energy storage battery

the second stage (2018-2020) will be launched in Beijing, Xiamen, Guangzhou, Shenzhen, Lanzhou, Xi'an, Kunming, Zhengzhou and other cities. Public travel operation platforms and echelon energy storage operation and maintenance platforms will be established in various cities, and regional energy interconnection centered on optical energy storage power stations will be established. 1000 power stations will be built, 100000 vehicles will be operated, and 1GWh (1million KWH) of echelon energy storage batteries will be comprehensively utilized

the third stage (2021-2022) will be carried out nationwide, covering major cities and key urban and rural areas, establishing a nationwide energy interconnection centered on optical energy storage and exchange stations, building 3000 optical energy storage and exchange stations, operating 500000 vehicles, and using 5gwh of echelon energy storage batteries

not only the old car enterprises are keen on the power exchange mode, but also the new car manufacturers are also keen on it. Weilai automobile also announced that it would adopt the power exchange mode when it came into the market of es8. At the press conference, Weilai automobile demonstrated its power change mode. Users only need to park the car outside the Weilai power station, and the car will automatically pour into the power station. The power station can be replaced in 3 minutes. The main production technology is to automatically complete the battery replacement in the "roll embedded". Weilai automobile plans to deploy automatic power stations in major cities with a service radius of 3 kilometers. At that time, the time for consumers to change electricity is even shorter than the refueling time; Tesla, a world-renowned enterprise, has also been involved in the power change mode, which takes only 93 seconds

the power exchange mode has obvious advantages

"power exchange is a very good way, especially in the field of taxis, car hailing and other operating vehicles, the power exchange mode is more suitable for promotion." Fang Jianhua, partner and President of the new energy vehicle venture capital sub fund of the national scientific and Technological Achievements Transformation Fund, told China Automotive News

in Fang Jianhua's view, the advantage of power exchange mode is very obvious

first of all, for operating vehicles, time is money. The existing electric taxis generally need to be recharged in the middle of the journey. If the torsion fatigue test-bed fails, it can meet the requirements of driving mileage throughout the day. If the charging mode is adopted, it will take about an hour, which also means that a part of the effective working time of drivers is wasted. In addition, in the past, electric taxi drivers were afraid to turn on the air conditioner even in winter because they were worried that electric vehicles would lose power too quickly in cold seasons. The other mode of changing electricity can make up for the above defects, which can not only relieve drivers' mileage anxiety, but also improve their working environment

secondly, from the perspective of the power system, there are obvious peaks and valleys in China's power supply. At night, a large number of power resources cannot be used efficiently, and the power exchange mode just plays the role of peak shaving and valley filling. Fang Jianhua said, "the batteries replaced by operating vehicles can be recharged at night, instead of competing with factories and enterprises for power resources during the day. With the increase in the number of replaced trams, the role of night charging in peak shaving and valley filling will become more and more obvious, which is conducive to improving the utilization rate of power resources in China."

third, centralized management of the replaced battery is also conducive to extending the battery life and increasing its full life cycle value. Fang Jianhua said, "relatively speaking, slow charging can prolong the battery life better than fast charging. The replaced battery can be used at night, and it can also save users a lot of costs."

Zhang Qingping, deputy general manager of BAIC new energy, agreed with these advantages mentioned by Fang Jianhua. Not only that, Zhang Qingping also pointed out that the power exchange mode is conducive to battery recycling. "In the power change mode, the battery can be centrally managed, so that it is convenient to record the use of the battery in detail, and the centralized recycling of the battery is easier." He said

China's car ownership continues to grow. For a long time, the battery recycling of traditional cars has been a difficult problem. The batteries replaced every year should have been sent to a special recycling agency for treatment, but for a long time, formal recycling enterprises have "not enough to eat", and these scrap batteries have flowed into informal channels. The centralized management mode of power exchange mode can effectively improve this situation and make the recycling work relatively easy

in addition, the implementation of electricity exchange mode also facilitates the trading of second-hand electric vehicles. Previously, when asking about the trading of electric vehicles in the used car trading market, they generally reflected that it was difficult to evaluate the value of used batteries, which affected the trading of used electric vehicles. However, the evaluation of used cars will become much simpler due to the elimination of batteries in electric vehicles using the power exchange mode

it is difficult to promote in the private market

has obvious advantages and limitations

previously, Tesla wanted to apply the power change mode to the model series models, but later gave up. Tesla founder musk explained the reasons for giving up, saying that users prefer the charging mode, and the promotion value of the power change mode is not great

in this regard, Zhang Qingping told China auto news that there is indeed a problem in users' cognition of the power exchange mode in the domestic market, which is one of the reasons why the power exchange mode is difficult to carry out in the private market

for a long time, traditional car users have been used to refueling in urban areas, while the current power stations are generally in the suburbs, and it is difficult for consumers who are greatly affected by traditional thinking to accept this change. Is it feasible to turn the power station to the urban area? In Zhang Qingping's view, the land area required for power station replacement is not very large. Even so, it is difficult for major cities to find places to build power stations. In addition, the power exchange station has the function of charging, which requires the power expansion in the area where the power exchange station is located. This project involves the transformation of the regional power system, which is relatively expensive and difficult

in addition, in order to ensure that users can change electricity at any time, the number of battery packs of electric vehicles in power change mode must be more than that in charging mode. Zhangqingping told that the replacement power station needs to calculate the number of batteries that should be equipped according to the local conditions. Generally, the ratio of batteries to vehicles is between 1.3:1 and 1.5:1, which means that the investment amount of the replacement power station is relatively high and the investment payback period is relatively long

most importantly, the unshaped battery technology seriously restricts the development of power exchange mode. The major battery enterprises in China adopt cylindrical, square and soft packed batteries respectively. The characteristics of these batteries are quite different, which makes it impossible for electric vehicles of different brands to replace batteries casually. At present, China has unified the overall dimensions of power batteries, and there is still a long way to go for the unification of other aspects

there is no potential safety hazard in the power exchange mode

since the birth of electric vehicles, the discussion of safety has not stopped. Similarly, many people are also worried about the existence of the power change mode. 1. Host maintenance: in terms of potential safety hazards, for example, some experts pointed out that under the power change mode, the connection between the battery and the car body is not reliable, especially when the vehicle is driving, it is easy to cause a gap between the battery and the car body, resulting in a virtual connection, resulting in electric sparks in frequent friction between the battery and the car body

in response to this problem, Zhang Qingping made it clear that the power change mode is safe and secure. "BAIC bjev has long developed high-voltage plug-in technology and applied for a patent. It has conducted more than 5000 plug-in verification before promoting the power exchange mode, and no safety problems have occurred." For example, he said that BAIC bjev launched 100 electric taxis in Xiamen a few years ago, and some vehicles have traveled 400000 kilometers. Over the years, it has changed batteries countless times, and there has been no safety accident

Zhang Qingping said, "the advantages and disadvantages of the power exchange mode are obvious. In terms of the current technical level and market conditions, it is more suitable for promotion on operating vehicles." However, to meet the travel needs of private users, we can obtain a larger market, and the power exchange mode still has a long way to go

the visit found that the charging taxi driver wanted to change the tram

in order to investigate the actual operation of the charging mode, he recently visited the charging and changing power station in Huangcun, Daxing District, Beijing

around 11:30 noon, arrive at the charging and replacement power station, and the words "national electricity" are written on the Y-shaped shed. At the scene, about 30 electric taxis were charging in two rows

Master Zhang, who just charged the vehicle, told him that he would come to recharge the battery at noon every day, about 1 hour each time. In addition, turn on charging