TIMELINE:
0:00 introduction
0:28 Four Charging Methods of J1772
0:40 J1772 history
0:48 1996 and 2001 Level 3 charging proposals
1:10 J1772 is for conductive charging
1:19 J1773 Inductive charging
1:35 Terminology and electrical principles
1:45 1. All EVs and PHEVs use two different DC batteries
2:22 2. DC Batteries need to be charged with DC power
2:29 3. The 12V battery is charged with power from the high voltage DC battery
2:34 Most off-board chargers supply AC power to the vehicle
2:56 4. AC power is converted to DC power by the on-board charging module (OBCM)
3:45 2018 Tesla Model S P100D OBCM
3:53 2018 Chevrolet Volt OBCM
3:53 2017 Chevrolet Bolt EV OBCM
5:18 There are two different J1772 AC charging levels
6:20 There are two different J1772 DC charging levels
6:58 DC Level 1 charging and Tesla charging
7:42 5. Charge rate control (*See correction below)
9:20 Level 2 Charge Coupler (CCS)
10:18 AC and DC charging contacts
10:56 Contact 1 AC L1 and DC+
11:19 Contact 2 AC N, L2, and DC-
11:45 Contact 3 Protective Earth (PE)
11:50 Contact 4 at Control Pilot (CP) (*See correction below)
12:30 Contact 5 Control Status (CS) (*See correction below)
13:27 Contact 5 at Proximity Detection (PD)
14:15 Contact 6 DC+
14:39 Contact 7 DC-
14:43 J1772 recommended practice verses surface vehicle standard
15:58 Electric Vehicle Supply Equipment (EVSE) standards a
16:18 NFPA Document 70 NEC Article 625
17:32 J1772 off-board charger to vehicle EVSE standards
17:58 Off-board chargers need to be (UL) listed, Intertek (ETL) Listed, CSA certified, or ANSI certified to verify EVSE compliance
18:45 Video wrap-up
Download my pdf of the J1772 Level Charge Receptacle here: https://weberstate.box.com/s/wcksjm6j80ubrqdqkqr8sy8o6vhlgr0t
*CORRECTIONS:
I made some mistakes in the video and thanks to the great feedback I have received, the following corrections need to be made.
1. When using an EVSE compliant AC charging station or cord set, this equipment (EVSE) is not technically considered a charger. Instead, it passes the AC power to the vehicle’s on-board charger, where it is converted to DC power to charge the vehicle’s battery.
2. Control Pilot (CP) Contact #4.
– For AC Level 1 and AC Level 2 charging, the vehicle does not signal the EVSE how much current it needs. Instead, the external equipment (EVSE) signals the vehicle how much current it is capable of providing. Next, the vehicle’s on-board charging module takes whatever amount of current it needs up to that limit.
– For DC Level 1 and AC Level 2 charging, the off-board charger signals to the vehicle that Power Line Communication (PLC) is necessary. Using PLC over the Control Pilot (CP) circuit, the vehicle’s on-board power line communication module tells the off-board DC charger how much current to supply to charge the vehicle’s battery.
3. Proximity Detection (PD).
Contact #5 of the J1772 charge coupler (CCS Receptacle) uses Proximity Detection (PD), not Proximity Pilot (PP). Proximity Detection detects the connection to the vehicle (as described in the video). Proximity Pilot (PP) is not used in the USA; it is used in some other countries where the charging coupler cable from the EVSE to the vehicle can be swapped to another cable that may or may not be able to carry the same current. The Proximity Pilot signal indicates how much current the cable can handle.
4. I have updated my graphic of the J1772 DC Level 2 Charge Coupler. You can download it here: https://weberstate.box.com/s/wcksjm6j80ubrqdqkqr8sy8o6vhlgr0t
ABOUT US:
Weber State University (WSU) – Department of Automotive Technology – Ardell Brown Technology Wing – Transmission Lab. Forget what you have heard; there is no such thing as a Level 3 EV charger. Join me to learn about the four actual EV and PHEV charging methods of the SAE J1772 Surface Vehicle Standard.
WSU is a leader in Hybrid and Electric Vehicle education. This topic is taught as part of our 4-year bachelor’s degree program. For information on joining the Weber Automotive program, visit: http://www.weber.edu/automotive
This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kelly.html
ADDITIONAL TRAINING FOR YOU:
Join us for hybrid and electric vehicle training with two online courses and in a 5-day on-campus boot camp with Professor John D. Kelly. See http://www.weber.edu/evtraining
DONATE TO OUR DEPARTMENT:
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