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Professional electric vehicle parts supplier.
Now to buy new energy vehicles, the manufacturers either do not send charging piles, or send 7kW home filled piles, if you want to upgrade to 11kW you have to add money? 7kW and 11kW charging pile price difference of thousands, this money is worth it? Let's talk about that today.
First of all, we should understand one point: 7kW home charging pile is connected to 220V single-phase electricity, while 11kW is connected to 380V three-phase electricity, 7kW or 11kW is not what you say, but what the national power grid says. If it is an old residential area or the surrounding power shortage area, may not be able to apply for 380V meters, if you can, then do not think about it, you quickly apply to occupy the pit, 380V meters will only become more and more difficult to apply. The most important thing is that the 380V table can be loaded with both 7kW piles and 11kW piles, but the 220V table can only be loaded with 7kW piles.
Next to the pile selection, at least 90% of the new energy vehicles on the market support 7kW, but not necessarily all support 11kW, especially for people who buy their own piles, be sure to find out what kind of car they support, don't buy can't be used. If you buy a model equipped with 220V 7kW AC charger, and then apply for a 380V table, and finally install a 11kW pile, sorry, your car can only identify one of the three fire lines in the charging gun, 220V voltage, 16A current, the actual charging power can be calculated by junior high school students. Only 220V*16A=3.5kW, as slow as the car charger. So the meter to the high application, but the home filled pile do not blindly pick up the big choice, many people just do not understand this, and finally dismantled 11kW for 7kW.
What if your car supports 11kW? Then we're gonna have to settle a score. At present, 7kW and 11kW home filled pile, including line installation, the difference is hundreds or thousands. Nothing more than a little faster charging speed, but do you park the car every time after work, plug in and charge directly overnight? 7kw charging pile, charge for 10 hours, plus loss at least can be charged into more than 60 degrees of electricity, most electric vehicles from 20% to 90%, probably 40-60 degrees of electricity. So unless you are a large battery pack of more than 100 degrees, and often use it when it is almost out of power and then charged, and the next day will be long distance, it must be full, it has to be 11kw, otherwise 7kw is enough.
In fact, 7kw and 11kw installation charging pile thousand yuan difference, you calculate enough for you to charge how much electricity, open for how long? And hybrid and range cars, not to mention, you can honestly pack 7kw. Of course you can pack 11 kilowatts and pay for it. Forget I said that. But if you have so much strength, I strongly recommend that you skip 11kW and directly come to a 21kW home filled pile, the reason is simple: compatibility. Although only a few cars currently support 21kW AC charging, such as the Porsche Taycan. At present, 21kW home charging pile can be almost all models, 21kW, 11kW car it can be charged, even if it is 220V 7kW model, relying on 32A current, can also reach 7kW charging power, the main car can be used, with a long time will not be eliminated.
Of course, today's talk is all about the AC home charging pile, now including Weilai, some cars have canceled the AC charging port, which is commonly known as the slow charging port, and can only use DC home charging pile at home, although there is no compatibility problem, but the price of the pile is much more expensive. So when choosing a charging pile, you also need to pay attention.
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