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Electric Vehicle Charging Pile Networking Solution

Electric Vehicle Charging Pile Networking Solution

2021-06-15

2021-06-15
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  1. Background

With the deployment and implementation of the new energy strategies, the inventory of electric vehicles continues to rise. The supporting electric vehicle charging and swapping facilities have already begun construction, and will gradually form an electric vehicle charging and swapping system that integrates charging piles, charging stations, swapping stations, and other facilities.

  1. Solution

The charging infrastructure mainly includes scattered charging and swapping stations and various centralized charging piles. Due to the scattered locations and large number of charging facilities, it is necessary to provide services such as charging navigation, status query, charging reservation, and fee settlement to ensure user experience and operational efficiency. To provide these services, the charging facilities must be networked and connected to build an intelligent charging service platform.

The specific requirements for charging pile (station) networking are as follows:

  1. Charging piles (stations) often involve many stakeholders on site, and it is difficult to implement communication and negotiation on site. Therefore, the networked devices must be easy to install and convenient to expand. For sites that do not have wired communication conditions, GPRS/3G/4G and other networking methods can be used.
  2. Charging piles (stations) are often exposed outdoors and the on-site environment is complex. Therefore, the networked devices must be industrial-grade products.
  3. For important sites, links must be redundant and networked devices must support wired and wireless backup.
  4. Due to the scattered locations and large number of charging piles (stations), networked devices must support centralized monitoring and batch management on the remote end.

In response to different charging facilities and customers needs, USR IOT provides differentiated solutions by leveraging its technical advantages in the field of device networking.

  1. Solutions for centralized charging and swapping stations or group charging systems

In public service fields such as public transportation, vehicle rental, environmental sanitation, logistics, and highways, the charging infrastructure is mainly established by constructing centralized charging and swapping stations. Some charging service operations enterprises also launch intelligent group charging systems using box-type transformer and other technologies. For large-scaled charging pile products with high requirements for data amount and security or more product applications and services, routers are a better choice. Compared with the charging pile network composed of data transmission units (DTUs), the network composed of routers can provide charging piles with higher-speed, safer and stable networking, and data transmission channels. In addition, it can provide more network services.

The charging piles of the centralized charging station form a local area network (LAN) through Ethernet. USR IOT industrial-grade Cellular routers acts as a unified gateway to connect the LAN to the private network or Internet and finally set up a connection with the monitoring and operations center of the charging service operations enterprise. In this way, data is transmitted bidirectionally between the charging facility and monitoring and operation center. The system networking topology is as follows:

  1. Solutions for scattered charging piles

For scattered charging piles in residential areas or parking lots and other places, USR industrial-grade Cellular modems/Cellular routers are used to set up the networking. The charging pile control panel is connected to the Cellular modems/Cellular routers through a serial port. The wireless Cellular modems/Cellular routers automatically dial-up to connect to the carrier's GPRS/3G/4G network and establishes a connection with the monitoring and operations center of the charging service operations enterprise to build a data transmission channel between the charging facility and the monitoring and operations center. The system networking topology is as follows:

 

  1. Highlights
        1. Low construction cost

As the solution adopts the carrier's network and uses the private APN/VPDN tunnel for encryption, it is only required to install the specified devices without deploying a wired network. The construction cost is low and the data security is high.

        1. Convenient remote operations and management

By using industrial-grade routers for network monitoring, the back-end management system can remotely implement management, configuration, upgrade, and traffic monitoring, thereby ensuring unified management and monitoring for all operations points. 

        1. High stability

As the LTE 4G network has covered most of the urban areas in the country currently, there is basically no blind spot. Therefore, remote online monitoring can be carried out in most of the areas throughout the country. The copper cable and optical fiber coverage in traditional solutions are vulnerable to network interruptions due to external factors such as road repair or reconstruction, and the network recovery speed is slow.

        1. High data transmission rate

With the industrial design and Cellular modems/Cellular routers, the data transmission speed can reach 20–50 Mbps. High-speed data transmission not only ensures networked monitoring of the charging pile operating status and networked operations of the charging transaction system, but also ensures remote wireless monitoring through video surveillance. 

  1. Industrial Application

Electric Vehicle Charging Pile Networking Solution is suitable for the networking of all kinds of electric vehicles and new energy vehicle charging devices. It can be applied to communities, shopping malls, hotels, gas stations, highway service areas and other scenarios that are suitable for installing charging piles. This solution not only satisfies the networking needs of centralized charging and swapping stations or group charging systems, but also satisfies the networking needs of scattered charging piles.

 

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