Battery-Enabled EV Fast -Charging Station

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The salient barrier to large-scale EV adoption is "range anxiety", i.e., i) long charging time, ii) relatively small range of distance coverage per charge iii) and lack of necessary or readily-accessible charging infrastructure, particularly in rural areas. The most common used EV chargers are levels-1 and level-2 charges which take up to 8 hours to fully charge the EV's batteries and are not suited for use during long-distance travel. Level-3 (fast) chargers that take 20-25 minutes for charging are the next step in the evolution of EV chargers and enable long-distance/rural EV travel. This collaborative industry-university proposal by eCAMION and the University of Toronto is to research, develop, test and install prototypes of EV fast-charging (level-3) stations that utilize grid-level Li-ion battery as the main source to supply multiple DC fast-chargers. The envisioned charging station, within the next three-years, is primarily intended for installation in rural area, e.g., along Tans-Canada Highway and other main transportation corridors, to address "range anxiety" for EV's long-range and/or rural travel. In contrast to the existing EV fast-chargers, the proposed technology neither requires high-capacity utility-feed nor results in power quality issues in the utility grid. These two features enable installation of the charging station based on demand and market requirements and eliminates the need for i) access to high-capacity utility feeder or ii) feeder up-grade which can impose excessive cost. The battery module of the charging station is charged i) gradually from the grid and/or ii) local renewable resources, i.e., solar-PV units, and thus further reduces GHG emission and cost of operation. This program focuses on: 1- RD&D of i) control, protection and Power/Energy management software/hardware of the battery-enabled fast charging station and ii) charging station infrastructure using Si-based power electronic converter modules for charging unit and station battery operation, for applications within 2nd-3rd year of the project. 2- RD&D of next-generation fast-charging station based on i) enhanced version of the developed control system and ii) SiC-based power electronic converter modules for applications beyond the 3rd-year of this project.