1. Potential for Global Harmonization of EV Charging
Gery J. Kissel
Engineering Specialist, General Motors
SAE J1772™ Task Force Leader
November 17, 2010

2. PHEV / EV Global Volume Estimate
Importance of harmonization increases with vehicle volume.

3. Charging Needs Each type of vehicle has unique charging needs:
Plug in Hybrid Electric Vehicle (PHEV)
Very limited electric range – small battery 5-10 kw hr
Charge power 1-3 kw
Extended Range Electric Vehicle (EREV)
Increased electric range – medium battery kw hr
Charge power up to 6 kw
Battery Electric Vehicle (BEV)
All electric range – large battery >20kw hr
Charge power > 6 kw

4. Charging Needs

5. Charging Standards IEC 61851 PEV Conductive Charging System
J1772TM PEV Conductive Charge Coupler
IEC Industrial plugs and socket-outlets

6. ISO/IEC JWG Communication Standards
ISO/IEC Road vehicles — Communication protocol between electric vehicle & grid - document structure
Layer
ISO / IEC Vehicle to grid communication interface
Part 1: General information and use-case definition
ISO / IEC Vehicle to grid communication interface
Part 2: Technical protocol description and Open Systems Interconnections (OSI) layer requirements
7 Application
6 Presentation
Similar to
SAE J2836™/1
Similar to
SAE J2836™/1
5 Session
4 Transport
Similar to
SAE J2847/1
Similar to
SAE J2847/1
3 Network
ISO / IEC Vehicle to grid communication interface
Part 3: Wired physical and data link layer requirements
2 Data Link
Similar to
SAE J2931/1
Similar to
SAE J2931/1
1 Physical
S259 - SAE ISO and IEC Standards Summary Rich Scholer
10/26/2010

7. NA / Japan / Korea / Australia
AC Charging Connector
AC Connector:
IEC EU
AC Connector:
SAE J1772™
NA / Japan / Korea / Australia
AC Connector:
China
Type 1:
Type 2:
Type 3:

8. AC Charging Connector
IEC Type 2 Derivatives: 3 Types of Type 2
IEC Type 3 Derivatives: 2 Types of Type 3

9. AC Charging Connector IEC 62196-2 And SAE J1772™ Harmonization
IEC Type 1 and SAE J1772™ are common connectors
IEC Types 1,2,3 and SAE J1772™ have common control signals
IEC Allows For Variation
Power Grid: single phase and 3 phase infrastructure
Country Specific Regulations: protective shutters, etc
Fixed or loose charge cables
China Unique Connector And Controls

10. AC Charging Coupler
IEC Types 1,2,3 And SAE J1772™ Have Common Control Signals
Vehicle charging control modules and software can be common between EU and NA.
Vehicle charging control modules and software development and validation is costly!
Connectors are inexpensive compared to hardware and software development and validation so different connector shapes are not significant.
However the fewer connectors the better!
China Standard
Different controls and connector will require unique software development and validation.

11. DC Charging Connector-”Fast Charge”
DC Connector:
IEC EU
DC Connector:
SAE J1772™ NA
DC Connector:
CHADEMO
Japan
DC Connector:
China
Working to harmonize:
Type 1 or Type 2 “core”, adding DC contacts
DC contact location and other physical features are common
Common control signals

12. DC Charging Connector-”Fast Charge”
IEC and SAE J1772™ Have Common Control Signals and Overall Physical Shape
Japan CHADEMO Has Unique Control Signals and Overall Physical Shape
China Standard Has Unique Control Signals and Overall Physical Shape

13. Charging Connector Summary
AC charging harmonized sufficiently except for China
EU working to reduce the number of connector Types
Will reduce complexity
DC charging connectors have harmonization potential
Reduce number of different connectors
Harmonize controls