Technical requirements for DC charging station
a) Charging pile power input voltage: three-phase four-wire 380VAC±15%, frequency 50Hz±5%;
b) The charging pile should satisfy the charging object
c) The output of the charging pile is direct current, and the output voltage meets the battery standard requirements of the charging object;
d) The maximum output current meets the charging requirements of the battery standard 1C of the charging object, and is backward compatible;
e) Charging methods are divided into regular and fast charging methods. The normal charging method is 5 hours, and the fast charging method is 1 hour (selected for different battery types);
f) Realize intelligent IC management;
g) Each charging pile comes with its own operator to provide users with charging mode selection and operation guidance, and displays the electric vehicle battery status and user IC card tariff information to achieve unmanned management;
h) The charging pile interface should comply with the relevant regulations on DC charging interfaces in GB Electric Vehicle Conductive Charging Interface (Interim);
i) The communication interface of the charging pile adopts the CAN communication interface, and the communication protocol is implemented in accordance with the provisions of the communication protocol (interim) between the GB electric vehicle battery management system and the off-board charger (the charging object is lithium battery electric vehicles);
j) The charging pile should have corresponding alarm and protection functions for abnormal conditions during the charging process;
k) The charging pile must monitor the status of the battery and automatically adjust the charging curve, charging current, and charging voltage according to the battery’s temperature, voltage, and voltage;
The structure of the charging pile
1. Outer cover
The pile structure of charging piles is usually made of steel, aluminum alloy and other materials, which has strong durability and stability.
2.Charging module
The charging module is the core part of the charging pile, including chargers, controllers, power supplies and other components. The charger is the main component of the charging pile and is responsible for converting electrical energy into the electrical energy required by electric vehicles. The controller is responsible for controlling the working status of the charger and various parameters during the charging process to ensure the safety and stability of the charging process. The power supply provides electric energy to the charging module.
3.Display screen
The display screen of the charging pile is usually used to display information such as the status of the charging pile, charging progress, charging fees, etc. There are different types and sizes of display screens. Some charging piles are also equipped with touch screens to facilitate user use, realize human-computer interaction, and meet the personalized needs of different types of users.
4. Connect cables
The connecting cable is the bridge between the charging pile and the electric vehicle, responsible for transmitting power and data. The quality and length of the connecting cable directly affects charging efficiency and safety.
5.Safety protection device
The safety protection devices of charging piles include leakage protection, overcurrent protection, overvoltage protection, etc. These devices can effectively protect the safety of charging piles and electric vehicles.
Post time: Mar-07-2024
