Last Updated 5.14.2024
EVENT CAPTAIN: Eric Huhn
ON-SITE LOCATION: EV Tech Area
HOURS: Same as official site
All charging must stop 1:15 hour before pits close to allow for accumulator quarantine
The charging of tractive system accumulators must occur exclusively in the charging area. No more than five team members of an individual EV team are allowed to be in the charging area at the same time; members must have dynamic passes or be the ESO. Only chargers marked during E-Scrutineering may be used. Accumulators must be removed from the vehicle and on the accumulator hand cart when charging. A team member must always stay with the accumulator during charging. The team member supervising the accumulator charging must have the necessary knowledge to react appropriately if any problems occur.
Charging power in the charging area will be 120V or 208V, single phase, AC with circuit breakers at 20A. 120V power will be available through NEMA 5-20 receptacles and 208V power will be available through an EVSE with a J1772 connector. Teams should be aware that the continuous current of a circuit breaker installed in an application is dependent on multiple factors and typically the continuous current is ~80% of rated current. Teams will be limited to a single circuit. This includes powering low voltage supplies, laptops, and the accumulator charger. Teams are responsible for providing any electrical cords needed to connect their charging equipment to main power receptacles. Outlets are distributed throughout the charging area but may not be directly next to the accumulator.
Teams must monitor and record the minimum, maximum and average temperature of the accumulator during charging and quarantine.
Once the team has finished charging the accumulator, they will be placed in accumulator quarantine. A team member must always stay with the accumulator during accumulator quarantine. During charging and while in accumulator quarantine the team must monitor and record the minimum, maximum and average accumulator temperature at least every 5 minutes and record on the provided form.
Temperature data must show that battery temperature has stabilized or is falling over a 15 minute window to complete accumulator quarantine. The 15-minute temperature window to end quarantine may include the last 15 minutes of charging at the discretion of the charging area event captain. During quarantine the accumulator may be moved to an area with only 120V power.
It is strongly recommended that teams test their charging system before arriving at competition.
Each team will be assigned to a roughly 8’ x 8’ charging area as needed. Each bay will be equipped with an 8’ long table and 2 chairs. Charging stations will not be permanently assigned; they are on a first serve, first come basis when team enters the charging area.
