One of the most crucial parts of monitoring your fleet is monitoring your chargers. With an expanding electric bus fleet, you also need to consider your charging capacity. Smart charging combines vehicle, planning, utility information, and other data sources in order to increase the efficiency of your charging infrastructure and thus decrease energy costs.
You can read our previous blog post to learn more about smart charging your fleet.
Most electric bus brands have two main commonalities between them for charging their buses and communicating with their chargers. The first commonality between charging methods is where the AC/DC conversion takes place. Usually this takes place within the charger, as opposed to within the bus. The second commonality can be found in the standard protocol (OCPP) the charger uses for communication.
BYD Vehicles and Chargers
However, these characteristics are different for BYD vehicles and chargers. The first is that the AC/DC converter is found within the BYD bus and not in the charger. The second is that they don’t use OCPP for the communication between the chargers and their back office. And the latter has some important implications for using monitoring software. Why?
In a way, you can view the OCPP as a remote control that is also able to log events. The charger starts and stops transactions, and the back office can manage the power of the charger through OCPP. Charger and transaction data are then again sent to the back office using this protocol.
Because BYD chargers don’t use OCPP, there is no standard remote control. This is where our hardware comes into play. Through placing our DataHub on the bus, between the charger and the back office, we create the possibility to use analog signals to control the power of the charging session.
BYD chargers don’t have a continuous power transmission; either they are switched off (0kW), charging on half capacity (40kW) or full capacity (80kW). This means that, when smart charging your BYD buses, you need a different algorithm. Instead of load balancing, where the power supply is evenly distributed between the buses, a first-in-first-out (FIFO) approach is used: Whichever bus is plugged in first, it will start charging first. It is possible to give priority to a bus when needed.
Do you want to know more about our solutions for smart charging your BYD buses? Get in touch!