How much do you know about new energy vehicle charging piles?

As the sales of new energy vehicles are getting higher and higher, people are slowly paying attention to new energy vehicles, and the close relationship between new energy vehicles is the charging pile, and no charging pile is like a fuel car without a gas station.

In order to solve the anxiety of electric vehicle owners, various mobile terminal charging pile applications on the market came into being. Sometimes, an excellent "pile-finding artifact" can not only make "pure electric life" more convenient and more secure, but also give you the courage to "walk the world without fear"

In fact, there are also different types of charging piles, and the following small editor of JIA SHENG Power supply will introduce the types and characteristics of new energy vehicle charging piles to you.

First, the type of charging pile

1. According to the charging method

(1) AC charging pile

AC charging piles, commonly known as "slow charging", are fixedly installed outside the electric vehicle and connected to the AC power grid to provide AC power supply for the on-board charger of electric vehicles. The AC charging pile only provides power output, there is no charging function, and it is necessary to connect the on-board charger to charge the electric vehicle. It is equivalent to just playing a role in controlling the power supply.

(2) DC charging pile

DC charging pile commonly known as "fast charging", it is a fixed installation outside the electric vehicle, connected with the AC power grid, can provide DC power supply devices for non-vehicle electric vehicle power batteries. Direct output DC power can be directly charged to charge the battery of the electric vehicle, and the output voltage and current can be adjusted over a wide range, which can provide enough power to realize the rapid charging of electric vehicles. DC charging pile charging speed is faster, so it is generally installed in the charging station next to the highway.

(3) AC/DC integrated charging pile

The fast charging pile device adopts ac and DC integrated structure. Both DC and AC charging can be achieved. When there are many charging services during the day, the DC method is used for fast charging, and when there are few users at night charging stations, AC charging can be used for slow charging operation. Touch and keyboard are used to back up each other's control, touch screen and keyboard adopt rainproof, dustproof design, emergency stop switch with emergency shutdown, and charging connector placement slot, which is waterproof.

2. According to the installation location

(1) Public charging piles. Charging piles built in public parking lots combined with car parking spaces to provide charging services for social vehicles

(2) Special charging pile. The construction unit has its own parking lot, which is a charging pile for the use of the internal personnel of the unit.

(3) Self-use charging pile. Built in a personal garage to provide charging piles for private users. The above is to introduce different types of charging piles according to different ways, below we mainly introduce the characteristics of charging piles divided according to charging methods.

Second, the characteristics of charging piles

1. Characteristics of AC charging pile

(1) THE AC charging pile structure is simple, the pile body is small, the input side only needs to be connected from the grid, the output is also AC, the cost is lower, and the installation is more convenient. Suitable for installation in the community and unit parking lot for their own use.

(2) The power of the AC charging pile is generally relatively small, the charging speed is relatively slow, after an electric vehicle is fully discharged, it usually takes about 8 hours to charge through the AC charging pile to be full.

(3) Protective function. AC charging piles should comply with IP54 (outdoors) and be equipped with rainproof and sunscreen devices to protect charging piles from rain. The charging pile electric pile shell door is equipped with an anti-theft lock, and the bolt that fixes the AC charging pile must be installed or removed after the shell door is opened. The iron shell of the charging pile and the exposed iron bracket and parts shall adopt double-layer anti-rust measures, and the non-ferrous metal shell shall have an anti-oxidation protective film or anti-oxidation treatment;

2. Characteristics of DC charging pile

(1) DC charging pile relative to AC charging pile, the size is relatively large, because the DC charging pile has a certain number of power modules inside, the higher the power, the greater the number of modules, the larger the pile. Suitable for installation in public areas.

(2) The DC charging pile can monitor the status of the battery, and automatically adjust the charging curve, charging current, and charging voltage according to the temperature of the battery, the charging current, and the charging voltage.

(3) Each DC charging pile comes with its own operator for the user to select the charging mode and operation guidance, and display the battery status of the electric vehicle and the user IC card tariff information to achieve unmanned management;

(4) DC charging pile can determine whether the charging connector and charging cable are correctly connected, after the connection is correct, the charger is allowed to start charging, and when the connection is not normal, it can immediately stop charging and issue an alarm message.

(5) DC charging pile is suitable for bus special charging pile, because of the nature of the work of the bus, generally using 200-350kw high-power DC charging pile, the bus runs back after a trip, the driver uses the rest of 10-15 minutes to charge the vehicle.

3. AC/DC integrated charging pile

(1) Provide human-computer interaction operation; provide DC and AC charging interfaces;

(2) Real-time communication with BMS to obtain information such as power battery type, single voltage, remaining capacity, temperature, alarm and so on;

(3) With the charging interface connection status judgment, interlocking, control guidance and other perfect safety protection control logic;

(4) With CAN2.0B, RS485 communication interface, it can communicate with centralized monitoring and send charging status information;

(5) With leakage, short circuit, overvoltage, undervoltage, overcurrent and other protection functions, to ensure the safe and reliable operation of the charging pile (plug), protection level IP54.

Charging pile construction is a reassuring pill relative to consumers, for the development of new energy vehicles have a certain degree of advancement, the industry is still in the technology, market, profit model of the change period, risks and opportunities coexist. How to ride on the shareholder wind of "new infrastructure" and walk in the forefront of the eight major development trends of the charging pile industry has become the key to the development of the charging pile enterprise.