Do you know how to install charging piles in the underground garage?

Dry goods! Design and installation of underground charging pile

0 1 parking space installation method

1. Electric parking spaces are divided into "one-time configuration" and "reserved installation conditions" according to the completion of equipment installation, as follows: 1) Requirements of "reserved installation conditions": only electric capacity and installation space are reserved. 2) Requirements of "one configuration and one construction": During acceptance and delivery, special transformers and cable trays should be laid in place, and the configuration mode of cables, distribution boxes and charging facilities should be selected according to regional and marketing requirements. 3) The allocation and reserved proportion of the paid parking spaces in new residential projects are as follows. If the special circumstances cannot be met, the reasons shall be explained, and the final approval document of the condition map shall prevail.

4) The AC charging pile has the advantages of low price, small volume, convenient installation, area saving and easy maintenance, and is suitable for charging residential basements at night. "Disposable configuration" charging facilities are designed as AC charging piles in principle.

2. In order to avoid waste of expenses and ensure acceptance and delivery requirements, according to the completion of equipment installation, the equipment is divided into the following ways. Companies can choose the proportion of each construction mode according to the cost calculation and marketing demand, and should explain it in the approval stage of the condition map.

02

Placement requirements of charging parking spaces

1. In order to facilitate the laying of equipment and the management and use of charging facilities, the "one-time equipped" charging parking space is set as the charging parking area, and the planning requirements are as follows:

1) The charging parking area should be close to the charging and distribution room, and the charging and distribution room should not be more than 50 meters away from the parking area.

2) When the radius of service line exceeds 200m, multiple charging parking areas shall be set separately.

3) The number of parking spaces in the toll parking area shall not exceed 100.

4) Charging parking area should be set at the entrance of the garage to facilitate fire rescue and vehicle access.

2. In order to ensure the safe use and convenient maintenance of charging facilities and power distribution room, the layout requirements are as follows:

1) should not be set in a low-lying place where water is easy to accumulate.

2) It should not be set in the toilet, next to the toilet or directly below other places where water often accumulates.

3) It should not be set in places with severe vibration or high temperature.

3. The layout of charging facilities shall not hinder the driving and parking of electric vehicles, and the distance between them and the safety, operation and maintenance of electric vehicles and buildings shall meet the following requirements:

1) The layout of charging facilities should not block the driver's sight and should not be set in pedestrian evacuation corridors and passages.

2) Anti-collision measures should be considered when charging facilities face vehicles.

3) In principle, wall-mounted installation or hoisting installation should be adopted.

4) The installation form and arrangement position should consider the convenience of operation and parking between the electric vehicle and the charging facilities. The specific requirements are as follows: the charging facilities should be arranged on the back of the structural column on one side of the parking space, and the door opening will not be affected after installation. Select the installation form according to the width of the structural cylinder and the width of the selected charging pile, as shown in the following figure.

When the charging facility is installed on the side wall of the parking space, the width between the side wall and the parking space should be ≥500mm, and the installation position of the charging facility should be arranged in front of or behind the vehicle, and the door opening should not be affected; When the charging facilities are installed on the back wall of the parking space, the parking space should be arranged on the wall and the charging facilities should be installed in the center, as shown in the following figure.

When there are no civil installation components around the charging parking space, the charging facilities can be hoisted and arranged behind the parking space, as shown in the following figure.

The installation method of standard column-span charging facilities should be combined according to the specific situation of parking spaces, as shown in the following figure.

4. The installation of charging facilities shall meet the following requirements:

1) The walls and supports installed in the charging facilities meet the load-bearing requirements, and the charging facilities are reliable and fixed.

2) The charging facilities shall be installed perpendicular to the horizontal plane, and the deviation from the vertical position in any direction shall not be greater than 5.

3) The installation height of the equipment should be easy to operate, and the horizontal center line of the man-machine interface operation area of the equipment is 1.4m from the ground.

4) The charging facilities installed on the basement floor should be provided with mounting bases, which should be larger than the overall dimensions of the charging facilities and the height should be higher than the ground1000 mm..

03 General requirements for charging equipment

General design requirements of 1

1) There are three kinds of commonly used charging equipment: AC charging pile with power of 7kW and power supply of 220V AC voltage; DC charging pile, power 30kW, power supply using 380V AC voltage; AC-DC integrated charging pile, with power of 30+7kW and power supply of 380V AC voltage. (If there are special requirements in the region, the local requirements shall prevail)

2) Charging equipment should have the functions of leakage protection, over-current and under-voltage, over-temperature protection, etc.

3) The charging equipment shall have emergency stop function, and the charging gun shall have plug-in protection function. Lightning protection measures should be taken for outdoor charging equipment. The charging equipment should have the function of automatic take-up to prevent the charging cable from being damaged due to improper use by people.

4) The selected charging equipment shall meet the relevant requirements of national standards, energy industry standards and enterprise standards of State Grid Corporation, and meet the charging requirements of different vehicles. The charging equipment shall be compatible with the charging function of new/old national standard electric vehicles.

5) Special electric vehicles need to be equipped with special charging equipment, and the owner shall apply to the property and relevant departments for implementation.

2 Power supply and distribution and low voltage system

1) When designing the capacity of new residential parking garage (yard), the load capacity of electric vehicle charging equipment should be fully considered, and the installation position of low-voltage distribution lines or special power transformation and distribution systems should be reserved.

2) The load calculation of electric vehicle charging equipment should be based on the number of electric vehicle parking spaces in the scheme design stage and calculated by the unit index method. The calculation coefficient can be selected with reference to the following table.

3) The load calculation of electric vehicle charging equipment should be based on the specific parameters of the charging equipment, and the value of the demand coefficient should meet the relevant requirements of national and local standards.

4) The distribution power supply of electric vehicle charging equipment should be provided with a special loop for power supply. The power supply circuit of the charging equipment should be connected to the residential public power distribution system or the non-residential supporting special power distribution system according to the requirements of the local power supply bureau.

5) The electric vehicle charging equipment should adopt radial distribution, and the distribution system should realize three-phase load balance.

6) Appropriate suppression measures should be taken to limit the harmonics of the charging equipment distribution system within the specified range.

7) The wires (cables) and conduits of the charging equipment distribution line shall be selected according to the most economical principle on the premise of meeting the national and local standards. The specifications of wires (cables) cannot be increased at will, nor can the material standards and specifications of conduits be increased at will.

8) The illuminance value of the electric vehicle parking area shall meet the relevant requirements of national and local standards.

3 metering, billing, monitoring and communication system

1) The charging equipment shall be equipped with metering electric energy meters, and the number of electric energy meters shall meet the requirements of "one pile and one meter". The distribution box of charging equipment should be set in a reasonable position according to the parking area of electric vehicles divided by buildings.

2) The charging equipment has IC card reading device or code scanning function to realize charging control and charging billing. The charging standard of charging equipment should be combined with the requirements of local power supply bureau. Charging equipment should have multiple settlement methods.

3) Charging equipment shall be equipped with Ethernet communication interface or wireless communication module as required, so as to facilitate the networking management of charging piles in the later period and networking with relevant management departments.

4) The monitoring and communication system of electric vehicle charging equipment should be set as required according to the engineering practice. The monitoring system shall monitor and control the power supply status, power quality and operation status of power supply equipment. The communication system should be able to communicate with the superior monitoring and management system, accept instructions from the superior monitoring and management system, and upload data to the superior monitoring and management system.

5) The control room of charging equipment monitoring and communication system is incorporated into the comprehensive information platform of property management, and there is no separate control room.

6) According to the product combination of the project (high-rise, small high-rise, multi-storey), the technical and economic comparison of water supply schemes is made, and the descending order of costs is: variable frequency pressurization control system with water tank, direct water supply system without negative pressure pipe network, and municipal direct pressurized water supply. According to the project situation, multiple schemes can be selected.