What type of outlet do electric cars use?
The first type is basically not used by drivers who live in cities, because it is really difficult to have your own small yard in the city; the third type is the most used, and some vehicles use the second type. . But now, the ones who are most confused about new energy vehicles are often consumers with on-board chargers, which is the 3/4 level market. To put it bluntly, it is the rural and township car market. So let’s dispel any doubts first. If you have a yard , or if you can throw the wire out for charging, you must prepare the line for the car charger.
The maximum power of the car charger can reach 3.3kw, and some third-party brand car chargers can reach 7kw, which places high requirements on the socket you choose.
Household wiring standards are roughly as follows:
Air conditioning circuit-6 square meters
Kitchen and bathroom circuit-4 square meters
Ordinary line-2.5 square meters
The “square” of a wire is not a square meter, but (pi x wire radius), in square millimeters; 1 square meter of wire can theoretically support a one-way 3kw device, but this is only the limit standard. If this standard is used for a long time For equipment, it can be said that the insulation layer can easily cause short circuit due to high temperature melting. 1 square copper wire is suitable for equipment with a maximum power of 1.76kw or less, and is not suitable for long-term use. Therefore, sockets for ordinary lighting and other equipment cannot be used for high-power equipment, especially for car charging.
However, the minimum common household socket should be 2.5 square meters, and the limit of 220V voltage can reach 3.6kw, but it is also not suitable for long-term use. Since kitchens and bathrooms need to use high-power equipment such as induction cookers, microwave ovens or bathroom heaters, the wire standards used are often higher. Some home decorations will choose 6 square meters of wire, but most are only 4 square meters; this standard wire can only be used for a short time. Support high-power equipment, its maximum load is within 6kw. However, home decoration wires are basically hidden wires. The heat dissipation effect of wires in walls and floors is very poor, and wires are prone to high temperatures. Therefore, a 4-square-meter socket can support up to 3.3kw car charger, and a high-power car charger can Not reliable enough anymore. It has been measured that when a 4-square-meter wire is used for a long time with equipment of about 5kw, the insulation layer will melt and cause a short circuit within a few days. 6 square meters is almost the highest standard among household wires. Theoretically, 220V can support equipment up to about 8kw, which allows the use of high-power car chargers. However, you still need to pay attention to the temperature of the wires when using them. Generally, cabinet air conditioners The socket will use 6 square meters of wire. Feel the temperature of the wire harness in the leaky fuse at the entrance. If it feels warm, there will be no problem. If it feels hot, you cannot use a car charger close to 7kw, otherwise it may still burn out the wire harness. . However, the so-called 7kw car charger or self-built pile is basically only about 6.5kw. As long as it is a national standard wire, there is sufficient redundancy. On the contrary, it is not good for non-standard wire.
To sum up, the socket at home can indeed charge the car, but you must choose the right socket to prevent high-power equipment from burning out the wiring harness, and also avoid the possibility of equipment damage; as for flying wire charging, it is not recommended, it is the safest The best way is to let the plug of the charging gun directly enter the internal socket. You should not use a common “plug tray” to connect the vehicle, because the wiring harness standards used by the plug tray are also relatively low and cannot support high-power equipment. If you must use a plug-in panel to extend the distance, you need to choose an industrial-grade PDU. To put it bluntly, it is a high-standard large plug-in panel, and the wiring harness must be at least 6 square meters.
If an open wire can be used, the entrance wire is generally 10 square meters. This standard can support 220V-13kw, which is very safe for high-power vehicle charging and self-built piles; the so-called self-built piles are chargers fixed on the wall. The charger is equivalent to connecting the plug and socket of the car charger together. The box of the charger is just a box. Its main function is to be beautiful and leave a socket for the charging gun. Just put it in when not in use.
Conclusion: Car chargers are mainly used for users who do not have the ability to install charging piles, or who use them occasionally when traveling long distances. When using them, you must choose the right socket to avoid damaging the circuit or even causing a fire; a dedicated new energy vehicle meter is suitable for matching with charging piles. The best solution is also the most ideal charging solution for new energy vehicle users in rural areas and towns.
However, some brands of vehicles do not have charging piles delivered with the vehicle. The cost of purchasing charging piles yourself is high, so you only need to apply for a new energy meter and a socket to use with the vehicle charging.