What are the advantages and disadvantages of DC fast charging and AC slow charging of charging piles

Charging pile is a charging device that provides DC/AC power for new energy electric vehicles. The function of the charging pile is similar to that of a gas dispenser in a gas station. Its input terminal is connected to the AC grid, and the output terminal is used to charge the battery of an electric vehicle through a charging plug. Charging piles are installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential quarter parking lots, and can be fixed on the ground or wall.

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel. Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

AC pile: The power battery is charged by the on-board charger, which has low power, slow charging and low cost, commonly known as "slow charging". The AC charging pile connects the charging socket to the on-board charger to charge the power battery.

The input voltage of the AC charging pile is 220V, the charging power is generally 7kw, and it takes 8-15 hours to fully charge, and it is mainly used for private charging piles in the community. The manufacturing and installation cost of the AC charging pile is only 800-1200 yuan per pile (excluding line modification and capacity expansion), and it has a simple structure and small size. It can be wall-mounted and portable and can be carried directly with the car.

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel. Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

DC pile: directly charge the power battery, with high power, fast charging, and high cost, commonly known as "fast charging". The DC charging pile converts AC power into DC power, and directly charges the electric vehicle battery through the charging socket.

The input voltage of the DC charging pile is 380V, and the power is usually above 60kw. It only takes 20-150 minutes to fully charge. DC charging piles are suitable for scenarios that require high charging time, such as charging stations for operating vehicles such as taxis, buses, and logistics vehicles, as well as public charging piles for passenger cars.

The disadvantages of DC piles are:

1) The cost far exceeds the exchange pile. The DC pile requires a large-volume transformer and AC/DC conversion module. The manufacturing and installation cost of the charging pile is about 0.8 yuan/w, and the total price of the 60kw DC pile is about 50,000 yuan (excluding civil construction and capacity expansion). In addition, large-scale DC charging stations have a certain impact on the power grid, and high-current protection technologies and methods are more complicated, and the cost of transformation, installation and operation is higher. 2) It may cause damage to the power battery. The output current of the DC pile is large, and more heat will be released when charging, and high temperature will cause the power battery capacity to drop suddenly, and the battery cell will be damaged for a long time. okplazas.com focuses on the field of new energy testing. In accordance with the technical requirements of the new national standard for new energy vehicles and charging piles, it provides on-site acceptance of new energy vehicle charging stations, charging pile product type tests, routine annual inspections of charging station safety, measurement calibration tests, Charging pile interoperability test and vehicle interoperability test provide various test platforms and solutions.