As we all know, electric vehicles have been actively promoted in recent years because of their zero emissions, low noise, and low operating costs. European automakers have already made new energy vehicles a future development target, and fuel vehicles have been listed on the ban. In China, new energy vehicles have risen to the height of national strategic development. Apart from vigorously encouraging the development of new energy vehicles and investing large sums of money, China has also classified the research and development of electric vehicles as a key scientific research project during the “10th Five-Year Plan” period. It can be seen that governments and automobile manufacturers in various countries pay attention to and look forward to the new energy market.
In spite of this, the new energy vehicle market still suffers from low penetration rate, small sales volume, and a single object of use. This is mainly due to the difficulty of breakthrough in the core battery technology of electric vehicles. Fatal flaws lead to the following shortcomings of electric vehicles. First, short mileage is a major issue for new energy vehicles. At present, the most advanced lithium-ion battery, "energy ratio" is only 1/50 of gasoline. In general, 50 liters of petrol can drive a small car for 600 kilometers, while an electric car can run for 600 kilometers on a single charge. The required battery pack weight is one or two tons, and it generates a lot of heat during work. The current electric vehicle's full-electricity driving range is generally about 150 kilometers, and the maximum driving range is only 250 kilometers, which is a big gap compared to traditional automobiles. So at present, the short mileage is a big reason why many people are reluctant to use new energy vehicles.
Second, the charging time is long. The charging method of an electric vehicle generally has two modes: a professional charging station quick charging and a civilian charging. It takes about 15-20 minutes for a professional charging station to fully charge 80% of the battery's power, and it takes 8 hours to charge the battery with a consumer's electricity. It takes only 3-5 minutes for a traditional car to fill a box of gasoline.
Third, battery maintenance costs are high. Because every charge and discharge of the battery will have a loss, so the battery needs frequent maintenance, and the battery needs to be replaced after a certain service life. This virtually increases the cost of using electric vehicles.
The above three shortcomings have seriously hampered the development and popularization of electric vehicles, and have created an embarrassing situation in which electric vehicles are currently "hot and cold" (ie, the government's enthusiasm is high and people's reactions are lukewarm). It seems that it has become particularly necessary to find a development path suited to the characteristics of electric vehicles. The core issue is to increase battery life and reduce costs. However, with the current technology, battery problems are still difficult to achieve a breakthrough, this time, replacing the battery technology has become a good way to make up for weaknesses.
Battery Replacement Technology for Electric Vehicle Short Board
Battery replacement technology refers to the use of a professional battery replacement device to remove the empty battery that has been depleted of electricity from the electric vehicle and replace it with a fully charged battery. This technology was successfully developed in Yokohama, Japan, in May 2009. Its success has a milestone significance in accelerating the large-scale commercial operation of electric vehicles. The system works by two battery lift automation devices installed on the automatic track system. The design of the battery lift automatic control device is widely applicable to batteries of various models and sizes, and it is convenient for common use of various types of electric vehicles. The entire process of replacing the battery in this system takes a total of one minute or so. The full set of actions is smooth and automatic. It is faster than filling a box of gasoline with traditional cars. Gives electric car drivers a cleaner, more convenient and faster experience.
Battery replacement technology mainly has the following advantages. One is to replace the battery faster. It takes 15 to 20 minutes for a typical electric vehicle to charge at a professional charging station, and it takes 8-10 hours for a consumer to charge at home. The charging time is too long to make the electric car useless during use. The use of battery replacement technology solves this problem. The replacement of a battery is faster than filling a box of gasoline with a conventional car. It only takes 1-2 minutes, which greatly facilitates the use of electric vehicles. Charging problems give users troubles.
The second is that the distance of electric vehicles can be greatly increased. A typical electric vehicle is charged 100-250 kilometers in full distance. Due to the limited range of cruising range, the range of use of electric vehicles has been greatly limited, and they cannot be riddled with long distances like traditional cars. The emergence of battery exchange stations also compensates for this shortcoming. In addition, the promotion of battery replacement technology has also greatly saved the use of electric vehicles, and also facilitated the recycling of used batteries to prevent secondary pollution of the environment.
How is the development of battery replacement technology in China?
China, as a big country of new energy vehicles, has surpassed the United States as the world's largest new energy vehicle country. What is the latest progress in China's current battery replacement technology? On November 3 of this year, the “Optimus Prime Plan” put forward by Beijing Auto will, by 2022, be expected to invest 10 billion yuan to build 3,000 light storage and replacement stations across the country, and cumulatively put in 500,000 sets of replacement vehicles. The use of a cascade of energy storage batteries exceeds 5Gwh. The plan through the exchange of electricity and battery recycling technology, the new energy vehicles, power batteries, substations, photovoltaic power generation in-depth integration, construction of intensive, smart, convenient green travel ecology, to achieve the full life cycle of new energy vehicles energy resources efficient use .
As early as 2016, BAIC New Energy, Aodong New Energy and Shanghai Telecomba started their operations in Beijing and launched investment and construction for the country. Up to now, Beiqi New Energy has put more than 3,000 vehicles in Beijing, Xiamen and Lanzhou. The issuance of this plan marks that the battery replacement model represented by Beiqi New Energy has stepped into the "2.0 era" - the substation has been upgraded to a "swapping + storage + photovoltaic" intelligent micro-grid system, and the decommissioned battery Recovering the energy storage equipment that is composed of it, you can use photovoltaic power generation, national grid peaks and valleys, etc. to power the vehicle's power battery.
The battery replacement technology of electric vehicles compensates for the inherent defects of electric vehicles, and brings unlimited space for the development of electric vehicles, and also brings new breakthroughs to the future energy supply model. It can be foreseen that the future of the automotive industry is electric vehicles, and the future of electric vehicles is battery technology. The continuous breakthrough in battery technology is not only a question of who can win the future market, but also relates to the future development of the country and even the global strategy and the issue of safeguarding energy security.