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Mobile WebSiteAbstract: AC electric vehicle charging pile, commonly known as "slow charging", is fixedly installed outside the electric vehicle and connected to the AC power grid. It provides AC power supply for the electric vehicle car charger (that is, the charger fixedly installed on the electric car). Device. The AC charging post only provides power output. There is no charging function. You need to connect the car charger to charge the electric car. It is equivalent to just playing a role in controlling the power supply. What is the principle of the AC charging pile? What is the structure of the AC charging pile? Let's take a look at the cloud bird!
AC charging pile principle
AC charging pile, the essence is a socket with control, the output is AC, the car charger needs to carry out transformer rectification, limited by the power of the car charger, the general power is small, mostly 3.3 and 7kW.
AC charging pile features
(1) The human-computer interaction interface adopts a large-screen LCD color touch screen, and the charging can select four modes: constant power, fixed time, fixed amount, and automatic (full); display current charging mode, time (charged time, remaining charging time) , power (charged power, charge to be charged) and current billing information.
(2) Support various payment methods such as swiping and scanning.
(3) Meet the latest national standards such as GB/T 20234.1-2015, GB/T 20234.2-2015, GB/T 18487.1-2015.
(4) Touch color screen display, friendly man-machine interface, easy to operate and easy to maintain.
(5) Rich communication interface, compatible with all vehicle BMS protocols and charging background protocols.
(6) Perfect protection function: overvoltage protection, undervoltage protection, overload protection, short circuit protection, leakage protection, etc.
The difference between DC charging pile and AC charging pile
DC charging pile: commonly known as "fast charging", it is a power supply device that is fixedly installed outside the electric vehicle and connected to the AC power grid to provide DC power for the non-vehicle electric vehicle power battery. The input voltage of the DC charging pile adopts three-phase four-wire AC380V±15%, the frequency is 50Hz, and the output is adjustable DC power, which directly charges the power battery of the electric vehicle. Since the DC charging pile is powered by a three-phase four-wire system, it can provide sufficient power, and the output voltage and current adjustment range is large, which can achieve the requirement of fast charging.
AC charging pile: commonly known as "slow charging", it is fixedly installed outside the electric vehicle and connected to the AC power grid. It supplies AC power supply for the electric vehicle car charger (that is, the charger fixedly mounted on the electric car). The AC charging pile only provides power output, and there is no charging function. It is necessary to connect the car charger to charge the electric car, which is equivalent to only functioning as a control power source.
The difference between the two: In simple terms, AC charging piles need to be charged by means of a car charger, which is not required for DC fast charging piles. The difference in charging speed between the two is large. It takes 8 hours to fully charge a pure electric vehicle (common battery capacity) through the AC charging pile, and only 2 to 3 hours through the DC fast charging pile. The AC charging pile provides power input to the electric vehicle's charger. Since the power of the in-vehicle charger is not large, fast charging cannot be achieved.
