Although the deployment of electric car charging points is progressing favorably in Spain, it is still focused on power levels from slow charge. An aspect that wants to continue improving from the municipalities and autonomous communities. For this reason, and as it already happens in other countries, it is possible to install charging points by doing it near our home, such as in the garage, probably the most comfortable option if we own an electric car.
Where can we recharge our electric cars
Switching to this type of transport, still in the process of development, does not have to limit us when it comes to driving. It is true that nowadays there are still no facilities available to everyone, as is the case with other combustion cars. Even so, many cities are increasingly choosing to make the job easier for new drivers of this type of new generation vehicle. One of them is when loading them. ¿Where can we do it?
Thanks to current technology, that question about where to charge your electric car has many answers. However, and being one of the most interesting conditions when using a vehicle of these characteristics, in general terms there are three places where recharging is allowed: at home (linked recharge), at work, hotels, shopping centers … (opportunity recharge), or electrolineras.
- At home. It is the first place we can go to, and which we will talk about next. Called as linked recharging points for electric cars, it will always make things easier for us. If you live in a private house with a garage space or in a house with a communal garage, the most practical thing to do is to install a wallbox.
- At work, shopping centers … Well seen as one of the most common strategic points to charge our cars, it is also known as opportunity recharging. Recharging, in most cases, is usually slow, and it is not intended to fully recharge the battery. They are usually limited to a series of hours.
- Electrolineras. In the same way as if they were gas stations, these service stations for electric cars are a good way to do it. The average price in the electric stations remains around 0.50 euros per kWh recharged, although there are variations depending on each establishment. A 40 kWh recharge would cost us 20 euros. (January 2021 rates).
Your own charging point, the most comfortable
Just as it happens when charging your mobile phone, wireless headphones or other electronic devices, the same happens to electric vehicles. The only and main difference is that we should not connect them to any socket in our home as we do with them. To do this, we will focus on what can be our charging points at home and their installation.
Therefore, if you live in a single-family house or have your garage space in a community of owners, you can request the installation of your own equipment or residential charging point for electric cars. With total security, the most comfortable of the three possible aforementioned, and that will make it totally satisfactory for your interests.
Of course: the installation of recharging points for the electric vehicle implies a higher power demand and therefore, it is necessary to take the appropriate measures to avoid overloads and failures in the electrical supply of the building as a whole. A viable solution to minimize this risk is the general power line protection system. This prevents the fuses of the general protection box from blowing if the installation demands at any time a power of intensity greater than the maximum admissible. Its form of action will depend on the recharging modes of the installation.
How much does it cost to install them?
For its installation, first of all, it is convenient to know that its cost will not be the same for all the equipment that we can install. As such, the charger must be installed in an individual place, hence doing it in the garage is usually the most practical and comfortable solution for our interests.
It is known that a large part of the manufacturers that sell electric cars offer promotions and offers to install the charging point in your home, even (some) give away the charging point and the installation itself. Sometimes, the dealer will guide you to carry out the installation and on the charging point that your vehicle needs depending on the battery of the electric car. However, the concessionaire does not always take charge, so the services of an installer authorized electrician, as well as comply with regulations.
Thus, a basic recharging point for a private garage can be a common socket like the ones we have at home. This is the cheapest option but also the slowest. It can also be done with the help of a fixed device on the wall, such as the Wallbox which are generally single-phase. They have a power of between 2.3 and 7.3 kW, and their cost ranges between 500 and 1,500 euros.
On the other hand, there are other more expensive and unnecessary options for private use. A semi-fast charging point of 22 kW in three-phase, those of public roads, can have a cost starting from 2,500 euros, while the fast recharging points, usually in direct current of 50 kW (those of electrolineras), have a cost between 20,000 and 30,000 euros. Finally, super-fast charging points, with a power between 100 and 150 kW (such as Tesla’s Superchargers), have a cost that can exceed 100,000 euros.
Types of cargo
In what has to do with the types of load, as well as the connectors, these are seen as one of the key aspects, also because not all cars can support the same load or establish the same connectors. In this sense, there can be two types: either slow charge or fast charge, although for our garage we focus on two variants.
- Slow recharge or normal: It is the most common and the most recommended. Perfect to do it at night, the load does at 16 A and from 3.6 kW of power to 7.4 kW. A 24 kWh car could be recharged in 8 hours.
- Recharge semi-fast: It is carried out with a power from 11 kW to 22 kW. With this recharge, a 24 kWh car could have its batteries full in about an hour.
Connectors and modes
In the current market there are different types of connectors for electric cars. As is the case with the different types of cargo and equipment for their installation, they are not suitable for all equally. For this, types such as those of Schuko or CHAdeMO, suitable for our squares.
- Schuko connector. The Schuko connector is a European standard for connecting low-voltage electrical appliances with single-phase currents. Designed to withstand currents up to 16A for short periods of time, it is recommended not to exceed 12A or 13A for partial loads, and 10A for full loads, especially to avoid overheating. It is special for slow or normal loads.
- ChadeMo connector. It is a connector for fast recharging in direct current, designed to withstand up to 50 kW of power and an intensity of 125 A of direct current. Most Japanese electric vehicles have this connector to enable quick recharges.
Regarding the charging modes for the installation of our electric cars, these will serve for which the vehicle and the charging infrastructure are communicated. Through its three modes (four depending on the equipment), you can check the state of recharging, how much power should be transmitted from the recharging point to the car and knowing if there are any problems, as well as that the system may interrupt the transmission of energy. The more charging mode, the communication level will be higher.
Requirements for installation
At the time of installation, it is necessary to know that we have the Royal Decree to regulate the charging points where the Government works. In it, it establishes the obligation that the buildings of new construction and those that undergo a major intervention have a pre-channeling of wiring for 100% of the assigned parking spaces, in the case of private residential buildings, and for the 20 % of spaces in other buildings.
Now, should we take into account something in particular for your arrangement? Beyond contacting the electrician and communicating with the neighbors, this in case of being a community garage, not necessarily. The community may not oppose the installation, although the interested party will pay for the installation and the energy it consumes. If it is for a single-family home, it is simpler: where, when and how you decide. Installation time is a few days.
Among the conditions to install the charging points for our electric cars, it is necessary that there be a supply point 230/400 VAC equipped with ground connection, with general control and protection panel and measuring equipment. As a general rule, a connection is usually made from the meter, especially since the distance to the garage is less than if it is made from the general control panel.