Design and Development of an Electric Vehicle Communication Controller for Small Boats with an A.C. Plugin and Solar Panel Inputs

The J1772 EVCC HAT Prototype has been designed for robustness and adaptability in modern EV charging and power management, particularly for small-scale electric boats like Philippine fishing vessels. It complies with industry standards such as IP67, SAE J1772, IEC 62763, and IEC 61581. Key performance metrics include Shepherd Model Discharge Curve R-squared values with 0.09% to 2.75% differences from a reference study and 82% AC plugin charging efficiency, validated by a One Sample T -test (t=1.093, t_critical=2.064). Solar-assisted discharge tests show battery percentages above 50%, with a One Sample T-test (t=5.95, t_critical=4.303) indicating areas for improvement. The prototype meets J1772/1EC 62763 standards with less than 5% voltage differences from theoretical values, compared to over 5% for commercial EVCCs. Its compatibility with various EVCCs in standard charging stations and its dual functionality in on-grid charging and motor load discharging makes it versatile for multiple applications, including as a portable solar marine power bank, meeting all study objectives.