What's the Charging station?

Today, let's learn about electric vehicle charging stations together. As a new learner, we will search the keyword "EV charging station" on Google and then gather some explanatory descriptions from websites or videos. However, the question is where we can find high-quality and useful content that we truly need? if interested, i would like to share some information that I have learned and organized.

The Definition of Charging Station

Charging station, also known as electric vehicle supply equipment (EVSE), is a device for supplementing electric energy for electric vehicles (including pure electric vehicles and plug-in hybrid electric vehicles), similar to that used by fuel vehicles gas station or filling station.

The Classicfication of Charging Station

According to the output current different, charging station can be divided into AC charging station and DC charging station. Usually, fast charging station are DC charging station (but not all DC charging piles are fast charging piles). For ordinary pure electric passenger vehicles, it usually takes 3 to 8 hours for a slow charging station to be fully charged, while a fast charging station only takes 10 minutes. 

Compared with passenger cars, commercial vehicles such as buses and taxis have a higher demand for battery Range, so there are usually need more charging station in bus stations, taxi parking lots and other places.

Catalog

Background

Basic Composition and Function

Charging Interface

Classification of Charging Station Installation

Related Policy

Electric vehicle

Background

As a supporting facility for electric vehicles, charging station were born due to the emergence of electric vehicles, and have gradually become popular with the popularization of electric vehicles.

Basic Composition and Function

The charging station is composed of station main body, electrical module, metering module and other parts. The pile body includes a shell and a human-computer interaction interface. The electrical module includes charging sockets, cable transfer terminal blocks, safety protection devices, etc.

Safety protection function: The charging pile should have safety protection functions such as overload protection, leakage protection, lightning protection, and emergency stop.

Human-computer interaction function: used to input charging parameters and display relevant information in each state. For example, the user of the charging pile can enter the charging quantity or charging amount through the keyboard on the charging pile, and reserve the charging time (start charging at night when the power consumption is low).

During the charging process, status information such as charging voltage, charging current, and charging power can be displayed on the charging pile. Users can query charging card account, fund balance and other information.

Charging station that provide public charging services generally also have functions such as card swiping, identification, metering and billing, ticket printing, local device debugging, and remote communication control.

Charging Interface

Generally speaking, the charging current of electric vehicles is larger than that of ordinary household appliances. In order to ensure the safety of electric vehicle charging process, charging piles usually use special charging interfaces, and according to the different output types of charging piles, charging interfaces are also divided into AC charging. There are two types of interface and DC charging interface. Relatively speaking, AC charging piles have low cost, simple structure, and are more friendly to batteries.

Classification of Charging Station Installation

It can be divided into floor-mounted charging piles and wall-mounted charging piles. Floor-mounted charging piles are suitable for installation in parking spaces that are not close to walls. Wall-mounted charging piles are suitable for installation in parking spaces close to walls.

It can be divided into public charging Station and special charging station. Public charging piles are charging piles built in public parking lots (garages) combined with parking spaces to provide public charging services for social vehicles. The special charging pile is the charging pile used by the construction unit (enterprise)'s own parking lot (garage) for the internal personnel of the unit (enterprise). The self-use charging pile is a charging pile built in an individual's own parking space (garage) to provide charging for private users. The charging pile is generally combined with the parking space of the parking lot (garage). The protection level of charging piles installed outdoors should not be lower than IP54. The protection level of charging piles installed indoors should not be lower than IP32.

In China, in 2012, Shanghai issued the Shanghai Municipal Engineering Construction Specification "Technical Specifications for Electric Vehicle Charging Infrastructure Construction" (DG/TJ08-2093-2012), which stipulates that the planned subway transfer stations (P+R) and newly built residential quarters , Newly built supermarkets/hypermarkets and other commercial centers, new commercial buildings, government buildings at all levels, schools and other public utility parking lots, the proportion of parking spaces equipped with charging piles is not less than 10% of the parking spaces.

Related Policy

On July 30, 2014, the National Development and Reform Commission of the People's Republic of China issued the electricity price policy for electric vehicles, stipulating that the electricity consumption of charging facilities such as residential houses and residential quarters shall be implemented at the residential electricity price. The implementation of the new policies of the National Development and Reform Commission will end the chaos of "one car, one price" charging charges and further reduce the cost of using electric vehicles.

Electric Vehicle