Description	Integrate a Level 2 EV Charger into MSXII
Target release
Epic	ELEC-297 - Getting issue details... STATUS
Document owner	Taiping Li
Project leads	Taiping Li
Team members	Taiping Li Arshan Khanifar Mena Labib

Goals

Integrate a EV charger into the vehicle such that MSXII can be recharged at any public J1772 L2 charger in North America

Background and strategic fit

With ASC 2018 and WSC 2019, cruiser class vehicles are allowed to recharge off of the grid. Previously, the team has used DC power supplies to charge our batteries, but in order to make MSXII more practical and "consumer" friendly, we are planning to integrate a Level 2 EV charger into the vehicle. With this charger, we should be able to plug into any public Level 2 charger and recharge within hours.

Assumptions

The user should not have to do anything else other than plugging the J1772 connector in to initiate charging

Requirements

#	Title	User Story	Importance	Notes
1	Level 2 Charger	This charger should be able to recharge off of 220-240VAC mains power	Must have	Typical voltage for all EVs
2	J1772 connector	This connector is the standard for Level 2 AC charging and Level 3 DC Fast Charge in North America	Must have	Not planning to support DC charging
3	Charge indicator	The charging information (status, power, time remaining if possible) should be displayed to the driver	Nice to have	Either LED indicator (Chevy Bolt/Nissan Leaf) and/or in the driver display
4	Safety	The vehicle should not be allowed to go into drive or reverse charging	Must Have	Force the vehicle to be in neutral/park, possibly check handbrake?

Questions

Below is a list of questions to be addressed as a result of this requirements document:

Question	Outcome
How is the charging algorithm defined?	We need to set the voltage and current every second, so we have to write the algorithm ourselves
How do we communicate with the charger?	We have to talk to it via CAN bus, meaning that we'll use another CAN translator board (Motor Interface)
How do we plan on charging during the race if there are no EV chargers along the route?

Not Doing

DC Fast Charge (More complex negotiations between charger and vehicle, also have to bypass the charger if we do that)
Support for multiple connectors/protocols

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