Duyun Electric Vehicle Maintenance Service Center
What should be paid attention to when charging electric vehicle batteries? When the electric vehicle starts and goes uphill, it is necessary to avoid emergency braking and acceleration as much as possible, because large current discharge will be formed during this process, which will damage the performance of the battery. There are also two points that need special attention when stopping for a long time. 1. Parking without power supply should be avoided: unlike traditional gasoline vehicles, electric vehicles have their own "unique taste" for the state of vehicle parking. If the "hungry stomach" is used too long, it will "rebel". When the electric vehicle is parked in the case of power loss, the battery is prone to sulfation, blocking the electric ion channel, resulting in insufficient charging and declining battery capacity. 2. Deep discharge shall be carried out regularly: when the electric vehicle is almost out of power, undervoltage protection will automatically occur, but during this process, its voltage is unstable, and it will also be up and down, causing repeated undervoltage protection status
Duyun Electric Vehicle Maintenance Service Center
There are four main pain points: A. Battery standardization is too difficult. The separation of vehicle and electricity first requires the standardization of power batteries, BMS standardization, interface standardization, and software management standardization. Any vehicle upgrade must be compatible with the previous generation of products. Battery standardization is too difficult. Every car company wants to make its own electricity exchange standard. It is unrealistic for so many car companies to unify. B. The investment is large and the cost is high. The replacement of power needs to lay a large network, and the investment scale is far greater than charging. Build a power exchange network for a city to provide special tram exchange services. The cost can be recovered only after at least 6-8 years or even more. C. The deflagration hazard of the power plant is large, and the safety hazard is huge. D. It is difficult to improve the customer experience.
Duyun Electric Vehicle Maintenance Service Center
The charging pile body is mainly composed of human-computer interaction unit, control unit, metering unit and safety protection unit. The human-computer interaction unit mainly includes: pile, LCD touch screen, card reading module and charging plug; The control unit mainly includes: main monitoring and auxiliary module; The metering unit is electric energy meter; The safety protection unit includes: leakage protection switch, anti fall switch, emergency stop switch, overvoltage and undervoltage protection unit.
Duyun Electric Vehicle Maintenance Service Center
Miao Wei, minister of the Ministry of Industry and Information Technology, said at the China Electric Vehicle Hundred Talents Forum (2018) that the current vehicle to pile ratio of 3.5:1 across the country still cannot meet consumers' demand for charging. With the continuous growth of the number of new energy vehicles, the problem of insufficient structural supply of charging infrastructure has become increasingly prominent, and the overall scale is still lagging behind. In 2020, China plans to build about 500000 public charging piles. However, compared with the annual production and sales of 2 million vehicles and 5 million vehicles in the 2020 plan, the number of charging piles still does not match, and the vehicle pile ratio even tends to deteriorate. In addition, the layout of charging facilities in China is also not reasonable. The utilization rate of public charging piles is less than 15%. A sustainable business development model has not yet been formed. There is still a two-way contradiction between operating enterprises' profitability difficulties and consumers' high charging prices.
Duyun Electric Vehicle Maintenance Service Center
In this environment, major automobile manufacturers in the automobile industry are also constantly shifting their focus to the research and development of new energy vehicle technology, and have also launched many new energy vehicles to replace oil with electricity and reduce emissions. This also represents the new direction of future automobile development. In China, friends who pay more attention to cars can see that more and more new energy vehicles are running on the road. More people are also aware of the benefits that new energy vehicles bring to the earth. The country is also introducing various preferential policies to vigorously promote the development of new energy vehicles. However, the main reason why some people are unwilling to buy new energy vehicles is the lack of endurance and inconvenient charging. However, with the continuous popularity of electric vehicles, these problems will certainly be solved in the future. Previously, the country also made a series of decisions in order to facilitate the charging of cars in the future.
