What do you know about new energy vehicle charging piles?

With the sales of new energy vehicles getting higher and higher, people began to pay attention to new energy vehicles slowly. The charging pile is closely related to new energy vehicles. No charging pile is like fuel cars without gas stations.

In order to solve the anxiety of electric vehicle owners, various mobile terminal charging pile applications on the market emerged. Sometimes, a good "pile finder artifact" can not only make "pure electric living" more convenient and reassuring, but also give you the courage to "go around the world without fear."

In fact, there are different kinds of charging piles. The following Xiaobian of Jiasheng power supply will introduce the types and characteristics of new energy vehicle charging piles

First, the type of charging pile

1, according to the charging method

(1) AC charging pile

Ac charging pile, commonly known as "slow charge", is a power supply device that is fixed outside the electric vehicle and connected to the AC power grid to provide AC power for the on-board charger of electric vehicle. The AC charging pile only provides power output without charging function. It needs to be connected to the on-board charger to charge the electric vehicle. It acts as a control power source.

(2) DC charging pile

Dc charging pile, commonly known as "fast charging", is a power supply device that is fixed outside the electric vehicle and connected to the AC power grid and can provide DC power for the power battery of non-on-board electric vehicles. It can directly output direct current to charge the battery of electric vehicles. The output voltage and current can be adjusted in a wide range, providing enough power to realize fast charging of electric vehicles. Dc charging pile charging speed is fast, so it is usually installed in the charging station beside the highway.

(3) AC/DC integrated charging pile

Rapid charging pile equipment adopts AC/DC integrated structure. Both DC charging and AC charging can be realized. When there are many charging services in the daytime, DC mode is used for fast charging. When there are few users of the charging station at night, AC charging is used for slow charging. The touch screen and keyboard backup each other. The touch screen and keyboard are rainproof and dust-proof. Emergency stop switch with emergency stop; Equipped with charging joint placing slot, placing slot can be waterproof.

Second, according to the installation location

(1) Public charging pile. Construction of charging piles in public parking lots combined with vehicle berths to provide charging services for social vehicles

(2) Special charging pile. The parking lot owned by the construction company is the charging pile used by the staff inside the company.

(3) Self-use charging pile. It is built in the private garage to provide charging piles for private users. The above is to introduce different kinds of charging piles according to different ways. Below, we mainly introduce the characteristics of charging piles divided according to charging ways.

Three, the characteristics of the charging pile

1. Characteristics of AC charging pile

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

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

(3) protection function. Ac charging piles shall comply with IP54 (outdoors) and be equipped with rainproof and sunscreen devices to protect charging piles from rain. The shell door of charging pile is equipped with anti-theft lock, and the bolts fixing the AC charging pile must be installed or removed after opening the shell door. The iron shell of the charging pile and the exposed iron bracket and parts shall be double-layer anti-rust measures. The non-iron metal shell shall be provided with anti-oxidation protective film or anti-oxidation treatment;

2. Characteristics of DC charging pile

(1) The DC charging pile is larger than the AC charging pile, because there are a certain number of power modules inside the DC charging pile. The higher the power, the more 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 and voltage of the battery.

(3) Each direct-flow charging pile has its own operator, so as to provide users with charging mode selection and operation guidance, and display electric vehicle battery status and user IC card fee information, realizing unsupervised management;

(4) The DC charging pile can judge whether the charging connector and the charging cable are correctly connected. After the connection is correct, the charging machine is allowed to start charging. If the connection is not normal, it can immediately stop charging and send an alarm message.

(5) DC charging pile is suitable for bus special charging pile. Because of the working nature of buses, 200-350kw high-power DC charging pile is generally used. When the bus comes back from a trip, the driver takes 10-15 minutes to recharge the vehicle.

Third. Ac/DC integrated charging pile

(1) Provide human-machine interactive operation; Provide DC and AC charging interfaces;

(2) Real-time communication with BMS to obtain information such as power battery type, unit voltage, remaining capacity, temperature, alarm, etc.;

(3) Complete security protection control logic such as connection state judgment, interlocking and control guidance of charging interface;

(4) With CAN2.0B, RS485 communication interface, can communicate with centralized monitoring, 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 (peg); Protection level IP54.

Relative to consumers, the construction of charging pile is a reassurance, which has a certain advance for the development of new energy vehicles. Currently, the industry is still in a period of change in technology, market and profit model, and risks and opportunities coexist. How to take advantage of the "new infrastructure" and walk in the forefront of eight development trends of charging pile industry has become the key to the development of charging pile enterprises.