March has been an exciting month for the electric vehicle team! The team took a trip down to NCCAR in North Carolina to participate in the Spring Thaw Event and also showcased the cars to the community at the Shenandoah Valley Governor’s School Open House. The article for the Spring Thaw Event can be seen here: https://svgsev.wordpress.com/2016/03/17/ev-spring-thaw-event-2016/ and the article for the SVGS Open House is available here: https://svgsev.wordpress.com/2016/03/27/ev-team-at-the-svgs-open-house/.
Aside from the big events that the team has been participating in, the team has been working on fixing the batteries in the Datsun after the overheating problem that was faced at NCCAR. The solution to this problem was to remove the cover that used to be over the main pack of batteries because it held in heat. We will also be checking the temperature more often during racing to determine if further action needs to be taken before problems becomes too serious.
After the Spring Thaw Event, the seat belt for the passenger seat in the Datsun had to be fixed because it came loose. It was an easy fix that only took one meeting to complete.
A main focus of the team has been collecting and analyzing data from the battery management system while the car is running. We have experimented with and decided on shut off values for current, voltage, and temperature to prevent drivers from running the batteries past dangerous points. In addition to creating these shut off points, team members installed a buzzer to warn the driver when the lowest cell drops below 1.5 volts.