How much do you know about the characteristics of group charging piles?
With the promotion of low-carbon travel, more and more electric vehicles appear in everyone's view. Not only is the sales of electric bicycles increased, but also electric buses are vigorously promoted, and electric cars are also everywhere. As the energy supply device of electric vehicle, the group charging pile is related to the service life and charging time of the battery pack. This is also one of the aspects that consumers care about before buying electric vehicles. The basic principle of EV charger design is to realize fast, safe and reasonable power supply to the power battery. In addition, consider the applicability of the charger to various power batteries.
The intelligent variable pulse charging method is adopted for the group charging pile,that is,the charging current pulse is adopted,including the charging pulse T1,intermittent pulse T2 and discharge pulse T3.The charger scheme of the ground charging station of the group charging pile is composed of a rectifier that can convert the input AC power into DC power and a power converter that can adjust the DC power.Insert the plug with electric wire into the supporting socket on the electric vehicle,and input the DC power into the battery for charging.The charger is equipped with a locking lever,which is convenient for inserting and pulling out the plug.The lever can also provide signals to ensure safety.According to the communication between the charger and the on-board battery management system,the power converter can adjust the DC charging power online,and the charger can display the charging voltage,charging current,charging amount and charging cost.This is just the basic principle of the charging pile.Many details need to be improved in practical application,and a more convenient use scheme has been obtained.
As the group charging pile on the distribution side of the power grid,the particularity of its structure determines that the automatic communication system has the characteristics of multiple and decentralized measuring points,wide coverage and short communication distance.And with the development of cities,the network topology needs a flexible and scalable structure.
Therefore,the following issues should be considered in the selection of communication mode of electric vehicle group charging piles:
The reliability of communication The communication system shall withstand the test of harsh environment and strong electromagnetic interference or noise interference for a long time to keep the communication unblocked.Project cost.On the premise of meeting the reliability,the construction cost and long-term use and maintenance cost shall be comprehensively considered.Two way communication can not only upload information,but also release control.Multi service data transmission rate.With the continuous growth of terminal traffic in the future,the communication between master stations and sub stations,and between sub stations and terminals requires higher data transmission rate to achieve multi service.The flexibility and scalability of communication Because the group charging piles have many control points,wide areas and decentralized characteristics,standard communication protocols are required.With the development of the"all IP"network technology trend and the continuous growth of power operation business,IP based business bearer should be considered,and it is required to facilitate installation,construction,commissioning,operation and maintenance.
Group charging pile,low carbon,electric vehicle
With the promotion of low-carbon travel,more and more electric vehicles appear in everyone's view.Not only is the sales of electric bicycles increased,but also electric buses are vigorously promoted,and electric cars are also everywhere.
The function of the DC single and double gun charging pile is similar to that of the fuel dispenser in the gas station.It can be fixed on the ground or on the wall,installed in public buildings(public buildings,shopping malls,public parking lots,etc.)and residential parking lots or charging stations,and can charge various electric vehicles according to different voltage levels.
The DC single and double gun charging pile is the auxiliary equipment of the charger,which is used for slow and fast charging of electric vehicles,providing charging interface,human-computer interface and other functions,controlling the charging of electric vehicles,realizing charging on-off,card insertion charging and other operations.
Now new energy vehicles are more and more popular and can be seen everywhere.New energy vehicles are not only economical and environmentally friendly,but also powerful.However,many citizens do not know enough about charging safety.
The function of DC single and double gun charging pile is similar to that of the fuel dispenser in the gas station.It can be fixed on the ground or wall and installed in public buildings(public buildings,shopping malls,public parking lots,etc.)
The DC single and double gun charging pile refers to the device installed on the electric vehicle to charge the battery pack using the ground AC power grid and the on-board power supply,including the on-board charger,the on-board charging generator set and the driving energy recovery charging device.