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Confidential CHAdeMO Association
Technical Specifications of Quick Charger for
Electric Vehicles
CHAdeMO 2.0
May 29, 2018
CHAdeMO Association
This document contains confidential information of the CHAdeMO Association and/or other companies. It is
forbidden to use the contents of this document for anything other than their intended purpose and/or to
disclose or release the documents to a third party without the permission of the Association.
CHAdeMO Association
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Confidential CHAdeMO Association
Preface
CHAdeMO regular member shall treat this document in accordance with the provisions of Article 2 and Article 4
on the “BYLAWS OF CHAdeMO ASSOCIATION (hereafter the Bylaws)”. The members who design and develop
charger and vehicle shall comply with this specification. In the subjects not specified in this specification, in
particular, requirements related to safety for charger users and vehicle passengers in a vehicle shall be meet the
national rule, domestic and/or voluntary technical standards in each country and/or industry organization.
This specification shall be maintained, managed and revised by the technical working group, established
according to Article 23 (1) of the Bylaws. Regular members who participate in the technical working group shall
cooperate for its smooth administration.
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Confidential CHAdeMO Association
－ Contents －
1. Scope ........................................................................................................................................................................ 7
1.1. Formation of specification ................................................................................................................. 7
1.2. Formation of CHAdeMO technical manual .......................................................................................... 7
2. Normative references and reference standards ........................................................................................ 8
3. Terms and definition ........................................................................................................................................ 11
3.1. Vehicle ........................................................................................................................................... 11
3.2. Charger .......................................................................................................................................... 11
3.3. Digital communication .................................................................................................................... 12
3.4. Others ............................................................................................................................................ 12
4. General requirements ..................................................................................................................................... 13
4.1. Environmental condition for charger installation ............................................................................... 13
4.2. General requirements of charger ..................................................................................................... 13
4.3. Vehicle inlet ................................................................................................................................... 14
4.4. Charging cable assembly ................................................................................................................. 14
4.4.1. Structure .............................................................................................................................. 14
4.4.2. Protection performance......................................................................................................... 15
4.4.3. Immobilization of charging connector ..................................................................................... 15
4.4.4. Emergency release ................................................................................................................ 16
4.4.5. Application of a charging cable with cross-sectional size less than the reference cable size ......... 16
4.4.6. Countermeasures for over-temperature of the charging cable .................................................. 17
5. Requirements about basic design and safety design for charger and vehicle .............................. 18
5.1. Charging method ............................................................................................................................ 18
5.2. Control signal ................................................................................................................................. 18
5.3. CAN communication ....................................................................................................................... 18
5.4. Mandatory functions ...................................................................................................................... 18
5.5. Protection against electric shock and arc discharge ........................................................................... 19
5.6. Overload current protection ............................................................................................................ 19
5.7. CPU monitoring .............................................................................................................................. 20
6. Circuit requirements ........................................................................................................................................ 20
6.1. Circuit configuration........................................................................................................................ 20
6.1.1. Isolation between input circuit and output circuit .................................................................... 20
6.1.2. Separation of main circuit and control circuit .......................................................................... 20
6.1.3. Reverse current prevention diode .......................................................................................... 20
6.1.4. Current-limiting fuse ............................................................................................................. 20
6.1.5. Coordination of short-circuit current protection and overload current protection ...................... 21
6.1.6. Power supply to vehicle ......................................................................................................... 21
6.1.7. Current and voltage measurement in the output circuit ........................................................... 22
6.1.8. Earthing ................................................................................................................................ 22
6.1.9. Internal protection ................................................................................................................ 22
6.1.10. Ground fault detection in the output circuit ............................................................................ 22
6.1.11. Protection of vehicle system from overvoltage ........................................................................ 23
6.1.12. Support for EV contactor welding detection ............................................................................ 23
6.1.13. Protection against overvoltage such as voltage surge ............................................................... 23
6.1.14. Requirements for the output circuit ........................................................................................ 24
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Confidential CHAdeMO Association
6.1.15. Impedance requirements for vehicle ...................................................................................... 24
6.1.16. Control of latch holding circuit ............................................................................................... 25
6.2. Sequence circuit ............................................................................................................................. 26
6.2.1. Circuit voltage ....................................................................................................................... 27
6.2.2. Applicable electrical wire size ................................................................................................. 27
6.2.3. Prevention of noise and current flow ...................................................................................... 27
6.2.4. Power supply to EV contactor................................................................................................. 28
6.2.5. Earthing of control power ...................................................................................................... 28
6.2.6. Protection of control signal circuit. ......................................................................................... 28
6.2.7. Redundancy of charging control about start and stop signal ..................................................... 28
6.2.8. Logical discrepancy judgment of the stop signal ...................................................................... 29
6.3. Communication circuit .................................................................................................................... 30
6.3.1. Terminating resistor .............................................................................................................. 30
6.3.2. Noise filter ............................................................................................................................ 30
6.3.3. CAN transceiver .................................................................................................................... 30
6.4. EMC performance (Emission) ........................................................................................................... 30
7. Protection against over-temperature of the charging cable assembly ........................................... 31
7.1. Classification of the specification ..................................................................................................... 31
7.1.1. The requirements of standard operating condition .................................................................. 31
7.1.2. The requirements of specific operating condition .................................................................... 31
7.2. Charging cable ................................................................................................................................ 32
7.3. Charging connector ......................................................................................................................... 32
7.4. Diagnostic check of temperature monitoring function ....................................................................... 32
7.5. Diagnostic check of cooling function ................................................................................................ 33
7.6. Measures for over-temperature at the terminal of the charging connector ......................................... 34
8. Communication control .................................................................................................................................. 35
8.1. Communication protocol ................................................................................................................. 35
8.2. CAN bus ......................................................................................................................................... 35
8.3. Transmission process ...................................................................................................................... 35
8.4. Reception process ........................................................................................................................... 36
8.5. Data format .................................................................................................................................... 36
9. Charging control ................................................................................................................................................ 38
9.1. Overview........................................................................................................................................ 38
9.2. Compatibility .................................................................................................................................. 40
9.3. Charging sequences ........................................................................................................................ 40
9.3.1. Start and termination ............................................................................................................ 40
9.3.2. Specified time ....................................................................................................................... 40
9.4. Measurement ................................................................................................................................. 41
9.5. Output response characteristics ....................................................................................................... 41
9.5.1. Charging current request from the vehicle .............................................................................. 41
9.5.2. Output response of charger ................................................................................................... 42
9.6. Accuracy regarding voltage and current measured by charger ............................................................ 43
10. Monitoring and protection ............................................................................................................................ 44
10.1. Continuous monitoring ................................................................................................................... 44
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Confidential CHAdeMO Association
10.2. Compatibility check of traction battery ............................................................................................. 44
10.3. Insulation test for output circuit ....................................................................................................... 44
10.4. Protection of traction battery .......................................................................................................... 45
10.5. Voltage check ................................................................................................................................. 46
10.6. Recovery from charging suspension ................................................................................................. 46
APPENDIX 1. EMC performance (Emission) ...................................................................................................... 47
Appendix 1.1. Usage environment and category .............................................................................. 47
Appendix 1.2. EMC test ...................................................................................................................... 47
APPENDIX 2. Welding detection procedures by vehicle ............................................................................... 50
APPENDIX 3. Charging sequences ........................................................................................................................ 52
Appendix 3.1. Data area ..................................................................................................................... 53
Appendix 3.2. Requirements for CAN communication message ..................................................... 55
Appendix 3.3. Control flowchart (Main flow) .................................................................................... 61
Appendix 3.4. Control flowchart (Subroutine) .................................................................................. 65
Appendix 3.5. Control timing chart ................................................................................................... 74
Appendix 3.6. Compliance time list ................................................................................................... 79
APPENDIX 4. Requirements for charger to be installed in Japan .............................................................. 84
APPENDIX 5. Requirements for multioutlet charger ..................................................................................... 85
Appendix 5.1. Classification of multioutlet chargers ....................................................................... 87
Appendix 5.2. General requirements ................................................................................................. 87
Appendix 5.3. Circuit requirements................................................................................................... 88
Appendix 5.3.1. Electrical isolation of output circuit ............................................................................... 88
Appendix 5.3.2. Disconnecting device in output circuit ........................................................................... 88
Appendix 5.3.3. Prevention of inrush current during additional charging (power-sharing) ......................... 89
Appendix 5.3.4. Stop condition when abnormality occurs ....................................................................... 89
Appendix 5.3.5. Additional requirements to avoid an unintended electrical connection between vehicles or
reduce the hazard ................................................................................................................................ 89
Part 2. Extended specifications ............................................................................................................................. 91
1. General rules ...................................................................................................................................................... 91
2. Communication protocol ................................................................................................................................ 91
2.1. Transmission process ...................................................................................................................... 91
2.2. Reception process ........................................................................................................................... 91
2.3. Data format for extended function ................................................................................................... 91
2.4. Control sequence of the extended specification ................................................................................ 92
2.4.1. Main flow ............................................................................................................................. 92
2.4.2. Subroutine ............................................................................................................................ 95
2.4.3. Data area .............................................................................................................................. 97
3. Extended function............................................................................................................................................. 98
3.1. Dynamic control ............................................................................................................................. 98
3.1.1. Scope of application .............................................................................................................. 98
3.1.2. Available output current (H’108.3) and Available output current (extended) (H’118.1, H’118.2).. 99
3.1.3. Remaining charging time (H’109.6, H’109.7) ............................................................................ 99
3.1.4. Charging current request (H’102.3) ......................................................................................... 99
3.1.5. Maximum charging time (H’101.1, H’101.2) .......................................................................... 100
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