I. Technical requirements of charging pile
Charging pilewallbox electric car charger according to the charging method is divided into AC charging pile and DC charging pile, AC and DC integrated charging pile wallbox electric car charger three. DC charging piles wallbox electric car charger are generally installed in highways and charging stationswallbox electric car charger; AC charging piles wallbox electric car charger are generally installed in communities, car parks, road parking spaces, highway service areas and other locations. According to the requirements of State Grid Q/GDW 485-2010 standard, the charging pile pile should meet the following technical conditions.
1, environmental conditions wallbox electric car charger :
(1) Working environment temperature: -20℃～+50℃;
(2) Relative humidity: 5%～95%;
(3) Altitude: ≤2000m;
(4) seismic capacity: ground horizontal acceleration 0.3g; ground vertical acceleration 0.15g; equipment should be able to withstand the simultaneous action of sustained three sinusoidal waves, and the safety factor is greater than 1.67.
2、wallbox electric car charger Resistance to environmental requirements:
(1) Charging pile wallbox electric car charger shell protection level should reach: indoor IP32; outdoor IP54, and configure the necessary rain and sun protection devices.
(2) three anti-(anti-moisture, anti-mould, anti-salt spray) requirements: protection of printed circuit boards, connectors and other circuits in the charger should be anti-moisture, anti-mould, anti-salt spray treatment, so that the charger can operate normally in the outdoor humid, salt spray-containing environment.
(3) Antirust (antioxidant) protection: the iron shell of the charging pile and the exposed iron bracket and parts should take double-layer antirust measures, and the non-ferrous metal shell should also have antioxidant protective film or antioxidant treatment.
(4) charging pile wallbox electric car charger shell should be able to withstand GB 7251.3-2005 in 8.2.10 impact strength test.
Second, sheet metal charging pilewallbox electric car charger shell structure features
Charging pilewallbox electric car charger generally consists of charging pile body, charging socket, protection and control devices, metering devices, card devices, human-computer interface, etc., as shown in the figure below.
Sheet metal structure charging pile body material adopts low carbon steel plate, thickness is about 1.5mm, processing method adopts sheet metal tower punch, bending, welding forming process. Some types of charging piles are designed with double-layer structure in consideration of outdoor protection and heat insulation needs. The overall shape of the product is mainly rectangular, the frame is welded as a whole, and in order to ensure the beautiful appearance, rounded curved surfaces are added locally, and in order to ensure the overall strength of the charging pilewallbox electric car charger, generally welded with reinforcing bars or reinforcing plates.
The outer surface of the pile body is generally arranged with panel indicator, panel buttons, charging interface and heat dissipation holes, etc. The back door or the side is equipped with anti-theft locks, and the pile body is fixed on the mounting base through the anchor bolts.
The fasteners are generally made of electroplated zinc or stainless steel. In order to ensure that the charging pile body has a certain degree of corrosion resistance, the charging pile is generally used as a whole outdoor powder coating spray or outdoor paint to ensure its service life.
Third, sheet metal structure charging pile body anti-corrosion design
(1) Charging pile wallbox electric car charger body structure appearance can not have sharp corners design.
(2) The top part of the charging pile is recommended to have a slope of more than 5° to prevent water from accumulating at the top.
(3) Relatively sealed products are dehumidified by dehumidifier to prevent condensation. For products with heat dissipation needs and open heat dissipation holes, it is advisable to use humidity controller + heater for dehumidification to prevent condensation from occurring.
(4) Sheet metal welding to give full consideration to the outdoor environment, the external weld using full welding, to ensure that the product meets the IP54 waterproof requirements.
(5) For sealed welded structures such as door reinforcement, spraying can not enter the interior of the sealed structure, the use of spraying and then assembled, or galvanised sheet metal welding, or electrophoresis after welding and then spraying and other ways to improve the design.
(6) Welded structures should avoid situations such as narrow gaps and narrow spaces where spray guns cannot enter.
(7) Heat sinks should be designed as componentised as possible to avoid narrow welded seams and interlayers.
(8) The outsourcing lock lever, hinges, etc. try to use 304 stainless steel, neutral salt spray resistance time GB 2423.17 is not less than 96h.
(9) The nameplate fixing method is changed to waterproof core-pulling rivets or adhesive backing, and waterproof treatment must be done when screw fixing is required
(10) The selection of all fasteners should be selected zinc-nickel alloy plating or 304 stainless steel treatment, zinc-nickel alloy fasteners to meet the neutral salt spray test 96h without white rust, exposed fasteners are all 304 stainless steel material.
(11) zinc-nickel alloy fasteners to avoid the use of stainless steel and stainless steel material fit.
(12) Charging pile wallbox electric car charger installation foot hole need to be pre-processed, shall not be put on the charging pile after punching. The inlet hole at the bottom of the charging pile shall be sealed with fireproof mud to prevent surface water vapour from entering the pile body interior through the inlet hole. Silicone sealant can be applied between the pile body and the cement mounting platform after installation to strengthen the sealing at the bottom of the pile body.
Sichuan Green Science & Technology Co., Ltd.
0086 19158819831
Post time: Aug-10-2024
