EV is the general term for electric vehicles, encompassing all vehicles that use electricity as their main source of power. Unlike traditional internal combustion engine vehicles, EVs store electrical energy in batteries and convert that energy into power through electric motors. EVs have advantages such as low power consumption, minimal pollution, and low noise, representing the developmental direction of the automotive industry.
Electric vehicles have no tailpipe emissions. Replacing traditional vehicles with electric ones helps improve roadside air quality and reduce greenhouse gas emissions. The popularization of electric vehicles is an important step for Hong Kong towards green transportation. Despite the many benefits of electric vehicles, such as environmental protection and energy savings, and strong promotion by the government, the lack of supporting facilities, particularly the shortage of charging points, has been a significant challenge for the development of electric vehicles. In this context, the investment by oil companies in building integrated service stations that combine fueling and charging is undoubtedly a positive signal, expected to alleviate the issue of difficult charging for electric vehicles.
CLP electricity meter and power testing
Replace the switch knife switch
RCCB/RCBO (Type A)
Application for CLP power supply in progress
Draft Electric Supply Plan
Issuance of Completion Certificate (WRI)
Village house/apartment charger
Replace the switch blade.
RCCB/RCBO(Type A)
Install basic artificial
Install protection box
MCB Distribution Box
Wiring
CLP application for electricity meter
Change the switch cutter
RCCB/RCBO (Type A)
Install Basic AI
Wiring
Application for CLP Power supply in progress
Draft power supply plan
Issue Completion Certificate (WRI)
Drilling through wall holes/electric meter board
Application for the estate CLP meter
and power testing
Change the switch knife
RCCB/RCBO (Type A)
MCB distribution box, wiring
Install the protective case
Application for CLP power supply in progress
Draft Power Supply Plan
Issuance of the Completion Certificate (WRI)
Install basic AI
Drilling through the wall hole/electric meter board
The vehicle charger includes different types, AC (alternating current) charging and DC (direct current) charging. AC charging, commonly known as 'slow charging' or 'medium charging', involves power companies delivering power to each user using alternating current (AC). Once the electricity enters the device, it is converted from AC to direct current (DC). AC charging refers to charging stations that transfer alternating current directly into the electric vehicle via charging cables.
The AC/DC converter on electric vehicles converts alternating current into direct current to charge the battery. AC charging can reach a maximum charging power of 22 kW, and the charging time is longer than for DC charging, typically requiring several hours. Since AC chargers do not require a converter, they are cost-effective. Even though the charging time is longer, there is no need to worry about costs, making them very suitable for private places where waiting times are longer, such as shopping malls and residential areas.
Charging will be completed in just over ten minutes.
DC fast charging, commonly known as "quick charging," is currently an important development direction in electric vehicle charging technology. Compared to AC charging, the greatest advantage of DC charging is its fast charging speed. The charging current can reach up to 500A (amps), and the charging power can reach 500kW, greatly shortening the charging time, with the fastest completion possible in around ten minutes.
Another characteristic of DC fast charging is that the conversion process from AC to DC occurs within the charging equipment. Unlike AC charging, where the rectification process is completed in the electric vehicle, in the DC fast charging mode, the tasks of conversion and control are handled by the charging equipment, and the electric vehicle only needs to accept stable DC power. Due to the need for well-equipped electronic devices, the construction cost of DC chargers is relatively high, and they are mainly used for commercial purposes.
