Unlocking EV Power Consumption Secrets: The LeoINAGPS System Measuring electric vehicle (EV) power consumption is crucial, but what if you could also track it in relation to the route, gradients, and altitudes? This innovative project makes it possible to detect basic electrical parameters of the traction motor and correlate them with the route, using a GPS receiver and Google Maps. The Inspiration Behind the Project A friend of mine, who uses an electric scooter for mobility, inspired this project. Living in a mountainous region with frequent steep climbs and descents, his scooter’s lead-acid batteries need to be replaced often. I wondered how much the scooter consumed in various conditions, considering an upgrade to high-performance lithium-ion batteries. The scooter features a heavy DC permanent-magnet motor and lead-acid batteries, unlike modern ebikes and scooters with compact, lightweight brushless motors and lithium batteries. The LeoINAGPS System I modified an existing system for measuring direct current (DC) load consumption to include a GPS receiver, allowing me to save the vehicle’s position and speed on a microSD card. This system can be applied to all electric vehicles, with adjustments to the shunt and voltage adapter. By tracking power consumption in relation to the route, we can gain valuable insights into EV performance and optimize battery life. For the GPS, I used my own functions to read speed, position, and UTC time. I discarded the GPS altitude reading, which has insufficient accuracy…
