EVOLUTION ELECTRIC STATION - Solutions for Electric Mobility (Part 2 )
For charging stations the reference standard is IEC 61851-1.
The standard foresees a control electronics that uses a "universal" communication system between the station and the vehicle through a PWM (Pulse With Modulation) circuit, necessary to guarantee the safety of the recharging process, both for people and to avoid damage to the vehicle battery pack.
MODE 1 Home charging without PMW Mode 1 consists of the direct connection of the electric vehicle to normal power outlets. Therefore there is no Control Box. This mode is only suitable for electric bikes and some scooters. It is not applied for electric cars due to the risk of explosion due to overcharge.
MODE 2 Safe home / business recharge, slow or fast On the vehicle power cable there is a device called Control Box (PWM safety system) that guarantees the safety of operations during charging, the sockets that can be used are domestic or industrial up to 10 A. Very slow recharges and danger of overloading the electrical outlets whose system is often not sized to have high absorption for long life
MODE 3 Recharge for public environments, slow or fast It is the mandatory way for public environments, recharging must take place through a special power supply system equipped with specific connectors, there is the PWM safety system, recharging can be slow (16A 230V) or fast (up to 32A) , 400V).
MODE 4 Direct charging in direct FAST DC It is direct current charging up to 200A, 400V. With this system it is possible to recharge the vehicles in a few minutes, the charger is external to the vehicle (in the column).