What Are The Communication Methods For New Energy Vehicle EV Charger?

2021-04-30 15:40:48  Resource

What is EV Charging Station?

An EV charging station, also called electric vehicle charging station, electric recharging point, charging point, electronic charging station (ECS), and electric vehicle supply equipment (EVSE), is a machine that supplies electric energy for the recharging of plug-in electric vehicles—including electric cars, neighborhood electric vehicles and plug-in hybrids

 

Electric vehicle charging stations belong to the side of the distribution network, and their communication methods are often considered together with the automation of the distribution network. Communication is an important and difficult point in the automation of distribution networks. Different areas and conditions have different applicable communication methods. Specific to electric vehicle charging stations, the main communication methods are wired and wireless.

 

1. Wired method

Wired methods mainly include: wired Ethernet (RJ45 line, optical fiber), industrial serial bus (RS485, RS232, CAN bus).

a. The main advantages of wired Ethernet are reliable data transmission and large network capacity. The disadvantages are complex wiring, poor scalability, high construction costs, and poor flexibility.

b. Industrial serial bus (RS485, RS232, CAN bus) has the advantages of reliable data transmission and simple design. The disadvantages are complex network layout, poor scalability, high construction cost, poor flexibility, and low communication capacity.

 

2. Wireless way

The wireless method mainly uses mobile data access services of mobile operators, such as GRPS, EVDO, CDMA, etc. The use of mobile data services of mobile operators requires that electric vehicle charging stations, the internal equipment of the power grid, be connected to the mobile data network of mobile operators. Expensive monthly and annual fees need to be paid. As the number of charging stations increases, the cost will increase. Bigger. Data security and network reliability are both restricted by mobile operators, which is not conducive to the safe operation of equipment; secondly, mobile access bandwidth of mobile operators belongs to shared bandwidth. When a large number of devices are connected in a local area, their access reliability of access and the average bandwidth of each user will deteriorate, which is not conducive to the dense access of charging station groups and the data transmission of large data volumes.

 

3. The following issues should be considered in the selection of the communication method of EV charger:

(1) Reliability of communication-The communication system has to withstand the test of harsh environment and strong electromagnetic interference or noise interference for a long time, and keep the communication unblocked.

(2) Construction costs-on the premise of satisfying reliability, comprehensive consideration of construction costs and long-term use and maintenance costs.

(3) Two-way communication-not only can upload the amount of information, but also realize the release of the control amount.

(4) Multi-service data transmission rate-with the continuous growth of terminal business volume in the future, the communication between the master station and the sub-station and the sub-station to the terminal requires higher and higher data transmission rates for the realization of multiple services.

(5) The flexibility and scalability of communication-because the charging station has the characteristics of multiple, wide and scattered control points, it is required to adopt a standard communication protocol. With the development of the "ALL IP" network technology trend and power operation with the continuous growth of services, it is necessary to consider IP-based service carrying, and at the same time require easy installation, construction, debugging, operation, and maintenance.

 

Electric Vehicle Charging Equipment Supplier

Luoyang Grasen Power Technology Co., Ltd is a professional high-tech enterprise engaged in the research, development, manufacturing, sales and services of new energy electric vehicle charging equipment and products. We are the supplier of a series of electric vehicle on-board charger series, DC/DC converter (DC/DC) series, DC charging power module series, AC charger series, DC fast charger series, etc. Many products have leading technology in China, widely applied in the fields of new energy electric vehicles all over the world.

 

If you want to know more details about our company and EV chargers, please feel free to contact us via email sales@grasen.com to make a great progress of your business.


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Very satisfied with the quality of the product and the suppliers service. The product was delivered in good package. Will definitely purchase from this supplier again.

-- Marcus Groll,A Charging Station Owner in UKRAINE

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