Communication charging pile, commonly known as "slow charging", is a power supply device that is fixedly installed outside the electric vehicle and connected to the communication grid, and supplies AC power for the on-board charger of the electric vehicle (that is, the charger that is fixedly installed on the electric vehicle). The AC charging pile only provides power output and does not have a charging function. It needs to be connected to the car charger to charge the electric vehicle. It is equivalent to controlling the power supply. What is the principle of the communication charging pile? What is the structure of the communication charging pile? Now let's take a look!

Principle of communication charging pile:

The AC charging pile is essentially a controlled socket that outputs AC power and requires the on-board charger to perform its own voltage conversion and rectification. Constrained by the power of the car charger, the power is usually small, mostly 3.3 and 7 kw.

Functional characteristics of AC charging pile

(1) The human-computer interaction interface adopts a large-scale LCD color touch screen, and four charging modes can be selected: constant power, fixed time, fixed amount, active (until full); display the current charging mode and time (charging time, remaining charging time) ), power (charging power, power to be charged) and current billing information.

(2) . It supports multiple payment methods such as swiping cards and scanning codes.

(3) Comply with national standards such as GB/T 20234.1-2015, GB/T 20234.2-2015, GB/T 18487.1-2015.

(4) Touch-type color screen display, friendly man-machine interface, easy to operate and maintain.

(5) Rich communication interface, compatible with all vehicle BMS protocols and charging background protocols.

(6) Complete protection functions: overvoltage protection, undervoltage protection, overload protection, short circuit protection, leakage protection, etc.

DC charging pile: DC electric vehicle charging station, commonly known as "fast charging", is a power supply device that is fixedly installed outside the electric vehicle and connected to the communication grid to supply DC power to the power battery of the off-board electric vehicle. The input voltage of the DC charging pile is three-phase four-wire AC380V±15%, the frequency is 50Hz, and the output is adjustable DC, which can directly charge the power battery of the electric vehicle. Since the DC charging pile is powered by a three-phase four-wire system, it can supply sufficient power, and the output voltage and current can be adjusted in a wide range, which can meet the requirements of fast charging.

Communication charging pile: Communication electric vehicle charging pile, commonly known as "slow charging", is a power supply device that is fixedly installed outside the electric vehicle and connected to the communication grid. device) to supply AC power. The AC charging pile only provides power output and does not have a charging function. It needs to be connected to the car charger to charge the electric vehicle. It is equivalent to controlling the power supply.

The difference between the two: In short, the AC charging pile needs to be charged with a car charger, while the DC fast charging pile does not need this equipment. There's a big difference in charging speed between the two. It takes 8 hours for a pure electric vehicle (ordinary battery capacity) to be fully charged through an AC charging pile, while it only takes 2 to 3 hours to fully charge through a DC fast charging pile. AC charging piles provide power input for electric vehicle chargers. Because the power of the car charger is not large, fast charging cannot be achieved.