As electric vehicles (EVs) become increasingly common, determining how to reduce waiting times for charging is a key for charging station operators to increase their charging service quality and improve turnover rates. In addition to installing rapid chargers, it is ideal for operators to have a single charger with two connectors. However, when both connectors charge simultaneously, it is typical for the charger to evenly distribute the power between two EVs rather than flexibly distribute the power according to the actual needs of each vehicle. Additionally, to ensure battery safety and service life, a limit is placed on the charging speed and amount of power used for charging when EV batteries approach full charge. Thus, when a charger allocates the same power level to one EV that has low charge and another EV that is almost fully charged, there will be idle charging power. This is inefficient for optimizing charger usage. 
The built-in dynamic load distribution technique makes charging smarter and increase the operational efficiency of charging sites. 
This problem led to Delta developing a dynamic load distribution technique for smart power deployment, where the central control module of the charger detects the actual power demand of two EVs that are being charged by periodically obtaining information about the remaining charge of the EVs. By comparing the charging needs of two cars, it can smartly deploy the appropriate amount of power to the two connectors through dynamic distributing. Thus, both EVs obtain the optimal service level while reducing the waiting times for the EV owners. For operators, this increases the usage turnover rate of their chargers. 

Chargers have seen a gradual increase in power levels from the common 25 and 50 kW of output power to 100, 200, and even 350 kW of output power. Pairing high levels of charging power with Delta’s dynamic load distribution technique effectively eliminates charger inefficiency by appropriately distributing the necessary amount of power to individual EVs. The benefit for EV owners is that it reduces their waiting time, allowing them to rapidly charge their vehicles in the shortest possible time. 

The built-in dynamic load distribution technique currently used by Delta’s chargers prioritizes charging according to the amount of charge an EV has and its charging demand. In the future, different distribution options will become available to meet the specific operational needs of different charging stations. This is expected to further enhance service satisfaction. For example, the load can be distributed based on the principle of first come, first served, meaning that EVs that arrive first will receive more power. Different options such as this will make charging services more flexible. Operators will be able to configure their chargers via a web portal, where they can choose a dynamic load distribution technique that is more suitable for their needs. Ultimately, this flexibility will make charging smarter and increase the operational efficiency of charging sites.