Application of Industrial IoT Smart Gateway in Charging Station Networking

a background

While the development of industrial civilization has brought about social progress and economic development, it has also brought about increasingly serious "byproducts": environmental pollution, climate warming, and deterioration of the ecological environment. PM2.5 has become one of the hottest words in recent years. "Self-strength does not suck, thick virtue carries fog" has become people's helpless desire for a pure blue sky.

Faced with various environmental issues, the world is proposing and trying to implement solutions that are more intensive, more sustainable, and greener. Among them, electric vehicles have become an important component of new energy strategies and smart grids because of their small impact on the environment. section. To make electric vehicles run normally, they must have sufficient reserves of electrical energy. Therefore, the popularization of electric vehicle charging station piles is one of the important links in the field of new energy vehicles.

Second status

In the process of promoting the popularization of electric vehicle charging facilities, one of the difficulties that needs to be overcome is the problem of data networking and unified management of charging station piles. The power management department needs to network and summarize the data of each charging station pile to provide effective data for the construction of the smart grid and realize the remote management of the charging station pile. However, the following difficulties are often encountered in the implementation process:

1) The charging station piles are geographically dispersed and have a certain spatial distance from the management center platform. It is difficult to adopt wired network communication.

2) The communication protocols supported by the charging station equipment of different manufacturers are different. The management center platform cannot communicate directly with the charging station pile equipment, which is inconvenient for data aggregation.

Based on the above two difficulties, it can be seen that it is particularly important to build a communication bridge between the charging station piles and the management center.

Three program introduction

Take the Shanghai International Automobile City electric vehicle charging pile networking system as an example. In this system, the charging station piles are manufactured by XJ Electric. The CAN bus can be provided as an interface externally. The equipment provides its own communication protocol, and the site requires wireless uploading of data. To the dispatch center, and the dispatch center platform software will receive data in the IEC 60870-5-104 protocol mode.

This requires smart devices that act as communication bridges with the following features:

1) It has a CAN bus interface, and it also has serial ports, network ports and other interfaces to meet the needs of the field.

2) With wireless communication capabilities, including multiple modes of GPRS, 3G, WIFI.

3) It has good openness, allows secondary development, and can interface with XJ's own communication protocol.

4) With the protocol conversion function, the data can be pushed to the dispatch center platform software in the IEC 60870-5-104 protocol mode.

5) With data acquisition and data caching capabilities, it can upload data such as working status, current voltage, and charging time of the charging station piles in real time, and supports the remote control and remote control of charging station piles by the dispatching center platform software. At the same time, it has the system alarm function. Once the charging station piles work abnormally, the fault information can be directly sent to the maintenance personnel in many ways.

In order to meet all of the above requirements, Cypress's industrial IoT smart gateway SymLink series products are used as the communication bridge between the charging station pile and the dispatch center. The system architecture is as follows:

Application of Industrial IoT Smart Gateway in Charging Station Networking

SymLink Industrial IoT Smart Gateway is an industrial-grade device designed based on the industrial IoT architecture. Products using embedded hardware and software integration structure, with remote configuration center platform and intelligent network management platform, can be used as a device of all sizes to interconnect and interoperate standardized solutions of choice.

In this system, based on the proprietary protocol provided by XJ charging pile, the developers developed the protocol separately in SymLink, collected and summarized the field data of the charging station pile, and realized the protocol forwarding. The data was in IEC60870-5-104. The protocol mode is uploaded via 3G wireless.

Management personnel can obtain the operating data and working status of each charging station pile at any time in the dispatch center, and can issue instructions to the SymLink intelligent equipment to realize the remote management and control of the charging station piles. The remote client can view the on-site situation at any time through a variety of smart terminals such as PCs, tablets, and mobile phones, and can grasp the system operating status at any time.

Four conclusions

With the continuous popularization and popularization of electric vehicle and charging station pile technology, our smart grid and intelligent transportation network are undergoing and undergoing earth-shaking changes. Tectron Technology has been focusing on the field of the Internet of Things. Through SymLink Industrial IoT Smart Gateway products, it will provide substantial overall solutions and services to customers.

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