Nowadays, new energy vehicles have become more and more common, and they can be seen in the streets and alleys. Although electric vehicles are economical, environmentally friendly and easy to use, but their charging is a big problem, if you go to the place where the charging pile is specially set up for charging, many people feel that the charging cost plus the parking charge leads to a higher price, and it is not very convenient. If there are conditions for installing charging piles at home, it is perfect, but do you really know the installation requirements for electric vehicle charging piles?
On May 1, 2021, the "Electric Vehicle Charging and Replacement Facility System Design Standard" T/ASC 17-2021 was officially implemented. In the design standard, it is detailed what kind of requirements are required to install charging piles of different power.
Electric vehicle charging equipment with a power rating greater than 7 kW should not be located in buildings (except charging stations, battery replacement stations, and independently constructed parking garages).
Electric vehicle charging equipment with a power rating of not more than 7kW can be set up in the villa garage, but a smoke detector should be set up in the garage and a fire alarm should be connected; the door entering the garage into the living room should adopt a Class C fire door. (According to the current national standard "Fire Door" GB 12955-2015, the fire resistance and fire integrity of the Grade C fire door are not less than 0.5h, code A0.50, which can meet the needs of villa projects with small scale and fewer layers.) ）
Electric vehicle charging equipment with a power rating of not more than 7kW can be installed on the first floor of the building's interior and the first basement floor, as well as on the first floor of the external wall open multi-storey parking garage.
The 7kW in this design standard is the continental standard AC charging pile power rating, which is easy to cooperate with the product standard. Based on the current situation of electric vehicle power batteries, the fire hazard increases when charging at high current, and it is difficult to extinguish the battery after it catches fire. It is to protect the safety of people in the building and reduce property damage.
Electric vehicle charging equipment with a power rating of not more than 7kW can be installed on the first floor of the building and the first floor of the basement floor and the first floor of the external wall open multi-storey parking garage. However, according to the research of the fire authority, once the electric vehicle power battery catches fire, it will deflagrate, the fire will spread rapidly, and it is very difficult to extinguish, endangering the safety of people and property. This provision is made from a safety perspective. According to the current specifications, the open parking building does not have a fire automatic alarm system, if the fire occurs during the night charging, it cannot be disposed of in time, and the fire will also lose control.
Provisions
1. The underground garage of the building should be set up with fireproof units, fireproof units should be set up centrally, and the number of charging parking spaces in each fireproof unit should conform to the provisions of the relevant national standards.
2. The entrance and exit of the fire protection unit should not be facing the vehicle.
3. At least 1 smoke detector should be set up on the top of each charging parking space in the fire protection unit.
4. The fireproof roller blinds on the driving passage inside the fire prevention unit shall be controlled by the automatic fire alarm system and shall comply with the following provisions:
(1) When a fire occurs, the alarm signal of any two independent smoke detectors or any one of the fire roller shutter special smoke detectors in the fire prevention unit should be linked to control the fire shutter to drop to 1 .8m from the ground; the alarm signal of any fire shutter special temperature detector should be linked to control the fire shutter to descend to the ground;
(2) Manual control devices should be set up on both sides of the fireproof roller shutter to control its lifting and lowering.
5. The end distribution circuit should be provided with a current-limiting electrical fire protection device.
6. The combustion performance of the cable of the distribution line should not be lower than B1 level, the combustion droplet/particle grade is not less than d1 level, and the smoke production toxicity is not less than t1 level.
7. The driving passage in the fire prevention unit should be separated by a fireproof roller blind with a stagnation function and a fire resistance limit of not less than 2h as the fireproof unit, and a partition wall and floor slab with a fire resistance limit of not less than 2h, and the continuous spraying time and the continuous water discharge time of the fire water gun are not less than 2h.
8. The fire prevention unit shall be equipped with a water sprinkler automatic fire extinguishing system and shall comply with the following regulations:
(1) At least 2 sprinklers should be set up in the upper part of each parking space;
(2) 2 fire water guns should be set up in each fire prevention unit covering each parking space;
(3) Post-accident cleaning and sewage discharge systems should be set up.
9. The fire prevention unit should be provided with an independent smoke exhaust system, and the adjacent fire prevention unit can share a set of smoke exhaust system, but should not be shared and mixed with other smoke exhaust systems in the building.
1
The classification, fire resistance level and fire fighting facility setting requirements of the car garage and parking lot equipped with charging facilities shall comply with the provisions of the current national standard "Code for Fire Prevention of Building Design" GB 50016, "Fire Code for Design of Automobile Garage, Garage Repair and Parking Lot" GB 50067 and "Design Code for Automatic Fire Alarm System" GB 50116.
2
The charging facilities in the building should be designed uniformly with the building for fire protection. Outdoor charging facilities within the red line of the building should share fire fighting facilities with the nearest building; when they cannot be shared, separate fire fighting facilities should be set up. Battery replacement stations should be equipped with firefighting facilities independently.
3
The area where the charging space of the electric vehicle is located is strictly prohibited from passing through the fuel, gas, and steam pressure pipes.
4
The area where the electric vehicle charging parking space is located should be convenient for fire rescue personnel to carry out fire rescue work.
5
For electric vehicle charging equipment in the building, a temperature-measuring electrical fire monitoring detector should be provided at the terminal block in the terminal of the distribution box at the end.
6
Electric vehicle charging equipment in the building, its distribution protection appliances should be set up to split the excitation trip, and the power supply should be cut off in conjunction with the fire.
Finally, we must remind everyone that when charging electric vehicles, we must strictly follow the standards, correctly grasp the charging time, choose a good charging environment, check the charging equipment before charging, cut off the power first, and then pull out the charging gun.
▌ Planning review: Goofy
▌ Editor proofreader: Wu Hao Xiao Jiajia