Now that charging stations and chargers are proliferating in public places to charge electric vehicles, did you know that there is a more efficient way to charge your car battery from home? Domestic charging points that you can install in your private garage provide your electric car with the electrical current it needs to charge its battery. However, you must take into account a series of issues if you do not want the power required by your vehicle to conflict with the energy demand of your home appliances.
The charging points that incorporate a dynamic control system will allow you to determine how many kilowatts or amps you want your electric car to charge. This system distributes the electrical power needed by all the devices in your home, including your car, according to the power you have contracted. This resource will be very useful for you to carry out an optimized charge of the battery, as well as to prevent the leads from jumping at home due to excess demand.
In the absence of a dynamic control system integrated into your charging point, your car battery will be charged at the power for which it is programmed. Let’s say that it will do so at 15 A (amps), which is equivalent to about 3.4 kW, when the contracted power for your home is equal to or close to, say, 4.6 kW. In the first case, the leads will jump anyway, and in the second, if it coincides with simultaneous high demand from the oven, washing machine and air conditioning, it is likely to occur as well.
You will always have the option of hiring a higher power, but with a dynamic driver you won’t need that. The power at which your car charges will regulate itself based on the remaining power for the house. On the other hand, you will subject the battery of your electric car to a slow charge, which will prevent overheating and increase its useful life.
Let’s assume again that you have contracted a power of 4.6 kW for your home, which is equivalent to a charging intensity of 20 A. That is the power limit that you must configure to charge your car. Thereafter, the controller will automatically establish how much power is supplied to the house and how much to the vehicle’s battery. In this way, if several electrical appliances are working at the same time and require, for example, 12 A, the available power, 8 A, will go to the battery, while, if the appliances draw the total available power, the dynamic controller will pause your car recharging.
For a stable charge, in which the rest of the devices in your home do not interfere, it is advisable to charge your car at night, since it coincides with off-peak hours or low energy demand. The less power you need at home, the faster your car battery will charge. For example, for vehicles with a storage capacity of up to 40kWh and a charging power of 4.6kW, the battery will be fully recharged in around eight and a half hours.
