After the layout of electric vehicle charging piles in our city, “Can I charge at home?†“How many miles does it take to charge a single electric energy?â€
Driving range is generally more than 100 kilometers
“In addition to the advantages of low cost, low emissions, low noise, high energy efficiency, and diversified energy sources, electric vehicles currently have some unsatisfactory places compared to traditional fuel vehicles.†Quanzhou Electric According to relevant sources, the current electric vehicles also have shortcomings such as relatively short driving range, battery technology is not mature enough, and pure electric vehicles that use lithium batteries are more expensive.
According to reports, the current driving range of electric vehicles used on the market is generally 100-300 km after one charge. However, this number needs to maintain proper driving speed, and a good battery conditioning system can be guaranteed. Most electric vehicles have a driving range of about 100-200 kilometers under normal driving conditions. "In addition to the relatively short driving range, battery technology has not yet made a breakthrough." The above-mentioned person from Quanzhou Electric Power Bureau calculated the account for the reporter: At present, the battery with good performance can be charged and discharged more than 1000 times. According to the calculation of 200 times of charge and discharge per year, the life of a battery is generally about 5 years. In addition, existing batteries also have problems of large mass and volume.
The charging station can be filled with 60% of electricity in 20 minutes.
Quanzhou will build the first batch of charging piles, and people are amazed that the era of electric vehicles may really come. However, many people are most concerned about whether an electric car can be charged by the power outlet of the home like an electric bicycle. According to the data currently available, the above-mentioned people of Quanzhou Electric Power Bureau do not recommend this charging mode.
It is reported that electric vehicle charging can be divided into slow charging and fast charging, slow charging and charging facilities power, car power size, time is not the same. The above-mentioned people take the BYD F3e electric vehicle as an example. When the rated capacity of the battery is 120 amps, the power supply of the general household is 4 kW. When the other electric appliances are used at the same time, the allowable charging current is small (about the highest). In 8-10 amps, the charging time of electric vehicles is very long. On the other hand, the battery charging and discharging technology requirements of electric vehicles are very high. In order to ensure the safety of charging and discharging and prolong the service life and reliability of the battery, a special management system (BMS) is required to monitor the charging and discharging process of the battery system. management. “And home outlet charging does not have this technology.â€
Electric vehicle charging facilities can be divided into two categories: AC charging piles and charging stations. The AC charging pile power is generally no more than 7 kW, and the charging station has a single charging facility with four levels of power: 7 kW, 10 kW, 30 kW, and 60 kW. The charging stations are divided into large, medium and small scales, with electric power of 90 kW to 300 kW, and can accommodate 3 to 10 electric vehicles for simultaneous charging. With the popularization of electric vehicles, the parking lots of various residential quarters will gradually support the construction of AC charging piles, making the charging of electric vehicles more convenient.
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