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    The Smartlife Connect Platform supports EV charging management and billing:
  • Dynamic load management system. The load shedding mechanism ensures that the  combined load of EV chargers on top of the existing electrical requirements for the building do not exceed the mains supply capacity. When required the system reduces the amount used by each charger. 
  • Suitable billing system. The ability to measure the electricity used by each charger for billing purposes. For larger apartments it is more cost effective to wire all the EV chargers into the common building power supply and then to be able to split up this cost according to individual usage.  
  • Eco mode. Avoid the EV chargers being used unnecessarily during peak times as this often means using non renewable energy – EV owners often purchase for environmental reasons and  “don’t want to charge their EV from Coal”.  

Because the Smartlife Platform also controls the App can be used to also control access to the carpark, common area lighting as well as to enable the EV outlet and specify level of urgency or eco mode. 

Smartlife EV Solution Summary

  • Smartlife EV charge control solution provides Smart dynamic load management and end-user prioritisation input. In the normal course of events the Smartlife EV charge solution will automatically regulate the charges to maintain the loads within the capacity of each sub circuit and the overall building maximum load. 
  • Users can indicate priority through the App. 
  • Smartlife EV charge solution uses robust load monitoring and contactors for low level electrical dynamic load management. In the event the total draw exceeds the building feed the smart system will instruct the chargers to reduce; however if this fails then the system will shut off the contactor MCB of each of the EV sub circuits.  
  • Billing. The system will enable reporting on the energy used by each EV outlet to enable the single electricity bill to be apportioned to the relevant EV user. 

 

Charging Stations

Fully variable charging control requires a charger that can be controlled via OCPP or Modbus. The system also supports 15A outlets with “dumb” chargers but they will not benefit from full variable control.

 

  • Siemens VersiCharge AC chargers can be mounted to a wall or on a pedestal. They include smart building integration, flexible communication connections, faster charging, smart load management OCPP and Modbus communication.
  • Vlink Smart Wallbox – 7.4/22 kW – T2S – 2.3 kW -TE – RFID 

The building managers and EV charge users will have access to all the features of the Smartlife EV control system

through the Smartlife Connect mobile app.

Apartment Managers

Building managers can use the Smartlife Connect app to:

  • Monitor total electrical load on the building and on the EV charge circuits
  • Receive alerts when loads are exceeded and load shedding is enabled (if desired)
  • Review the operation status of each charger 
  • Receive maintenance alerts
  • The manager will have access to the WebApp control panel and dashboards

Apartment Residents

EV charge user can use the Smartlife Connect app to:

  • Activate the EV charger
  • Schedule the standard charging for a specified time of day, or simply press Eco mode to automatically reduce during peak times
  • Monitor weekly or monthly usage of the EV charge station (kW hours and cost)
  • Receive alerts relating to the EV charge status, for example, ‘Your EV is fully charged now’, if desired.
  • Share access to their Smartlife Connect account for family and friends who may also need to use their charger

Avoid multiple Apps – the Smartlife Connect system can be expanded to control access to the carpark and building, common area lighting and Smart Home / Smart Apartment monitoring and control of lighting, HVAC and entertainment systems. 

Wiring and Networking

Below is a high-level wiring diagram. A wired Ethernet connection to each OCPP charging station is recommended but WiFi and also an option with some chargers: