What Is a Charging Pile?

In the era of rapid technological advancements and increasing emphasis on environmental sustainability, efficient and user-friendly charging piles are pivotal in encouraging the adoption of new energy vehicles.

EV charging piles can be fixed on the ground or on walls and installed in residential areas, public parking lots and charging stations. They can be used to charge a wide variety of electric vehicle models.

Working Principle

A charging pile is a dedicated infrastructure that provides electrical power for charging electric vehicles. It functions similarly to a gasoline pump in traditional cars and is strategically placed throughout public areas and work spaces to offer convenience for new energy vehicle owners. This technology plays a key role in encouraging EV adoption and promoting environmental sustainability.

EV charging piles are typically equipped with AC level 1 and DC high speed charging points. They also have a display screen to inform drivers of the charging status and associated fees. The display screen may include a human-computer interaction interface, and users can swipe a specific card to activate the charging station.

The main circuit of the EV charger is connected to an AC smart energy meter and input circuit breaker, while the secondary circuit includes a charging pile controller, a charging gun, and an AC-DC charging module. The AC-DC charging module carries out an AC-to-DC rectification conversion to charge the battery, while the fuse and charging gun control the flow of electricity.

Fuses in EV chargers are critical safety components that protect the charging pile from overcurrent conditions that can cause damage and create hazards. They have a similar design to regular fuses, but they are engineered for the specific requirements of charging piles and other new energy infrastructure. The fuses in charging piles are made of thin metal wire or strips, which heat up and melt when an overcurrent passes through them, thereby interrupting the current.

Installation

EV charging piles are electrical devices that provide power to the electric vehicle battery via a direct current (DC) connection with the public charging pile grid. They are usually equipped with several connectivity options and can be publicly accessible or private within residential properties or commercial establishments. They have lower installation costs compared to an entire charging station infrastructure.

Generally, there are two types of charging piles: vertical and wall-mounted. The former can be used in parking spaces where there is a lot of room, while the latter must be fixed to the wall. There are also different charging types: AC charging piles, which are usually used for slower and medium-speed charging, and DC fast charging piles, which allow for faster top-ups, making them suitable for highways or areas where quick charging is essential.

A reliable connection between the charging pile and the public grid is required to ensure uninterrupted service. This can be achieved by using a 4G router, which supports RS232, RS485, and LAN interfaces for additional functionality. For example, it can manage charging piles remotely through a cloud platform and perform functions dc charging pile such as monitoring device status, user authentication, and data transmission. In addition, it can also use GPS pointing data to display the location of a charging pile on a customer’s APP. This helps to make the EV charging experience more convenient and efficient for customers.

Maintenance

A charging pile is a dedicated infrastructure that provides electrical power to recharge an EV battery. It can be found in residential areas, commercial spaces, and public locations like parking lots and along roadsides. It works by plugging into the vehicle’s charging port and connecting to a control system. Once plugged in, it starts sending electricity to the vehicle’s battery until it’s fully charged or the driver manually stops the process. Unlike gasoline stations, new energy charging piles offer more flexibility and convenience in terms of payment and authorization, with most having a mobile phone APP to implement operator operation, equipment status monitoring, and more.

EV charging pile cables play an important role in the EV conductive charging system, and their performance will directly affect the safe and reliable operation of EVs. They are often subject to harsh conditions such as sunlight, weathering, oil pollution, freezing, and dragging during use, which can cause damage and reduce cable life. As a result, they need to meet higher requirements for safety, insulation, aging resistance, and heat resistance.

In addition, it is important to avoid using private power strips on a charging pile, as this can cause the cable to burn out and reduce the efficiency of the EV’s charging speed. It is also recommended to check the charging pile regularly to ensure it has not been damaged or overloaded.

Fuses

The fuses used in a charging pile protect it and the electric vehicle from overcurrent conditions that could damage the equipment or create safety hazards. These fuses work on the same principle as other electrical fuses that use fusible components to interrupt circuits in case of overload.

They consist of short bits of metal that melt when the current passes through them, thus breaking the circuit loop. They can be made in various forms with different features to match the specific application and requirements. For instance, the current rating of a fuse indicates how much of a continuous current it can tolerate without blowing; this is important when selecting a model for an application where there might be surges or fluctuations.

A fuse has a screw base or metal terminals at each end to connect it to the other parts of a circuit. Cartridge fuses are the most common form of fuse, with a fusible link connected to metal terminals at either end of a cylindrical insulating tube. They typically have a 240 volt setting and come in varying amperage ratings.

In addition to the rated current, it is important to select a fuse that has anti-time delay characteristics. This ensures that the fuse will not blow too quickly under temporary overload conditions, thereby protecting circuit protection further down the line.