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CHAdeMO protocol rev. 0.9
English
Technical Specifications of Quick Charger for the
Electric Vehicle
CHAdeMO Rev. 0.9
April 9, 2010
CHAdeMO Association
This document contains information that is confidential to the CHAdeMO Association and/or another
company. 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
CHAdeMO protocol rev. 0.9
Confidential information
Duplication, disclosure, and use of this information for anything other than its intended purpose is forbidden. CHAdeMO Association
Revision history
Date of
revision
Document
No.
Publisher Key changes
2008/12/19 - TEPCO* -
2010/04/09 CHAdeMO
Rev. 0.9
CHAdeMO
Association
Document format and description
- Changed configuration of all chapters and titles
- Abolished “Attachment 4: Charge control time chart for the
quick charger”
- Abolished “Attachment 5: Explanatory diagram for progress
of the charger”
- Abolished “Attachment 9: Checklist for operation verification
of quick charging stand before vehicle connection test”
Key changes made regarding charge control
- Abolished constant power control function
- Control timing
a) Changed vehicle preparation time for CAN
communication: 4 seconds or less
b) Changed charger waiting time for vehicle contactor
closing : 4 seconds or more
c) Clarified when charger stops receiving ‘maximum
charging time’ and ‘target battery voltage’ from vehicle
CAN data
- Clarified definitions
a) Maximum battery voltage (ID100.4,5)
b) Target battery voltage (ID102.1,2)
c) Threshold battery voltage (ID108.4,5)
- Modified definition
a) Vehicle relay welding enable (ID108.0)
- Added new items
a) CHAdeMO control protocol number on the charger
side (ID109.0)
b) CHAdeMO control protocol number on the vehicle
side (ID102.0)
c) Charging stop control flag (ID109.5.5)
Others
- Specified accuracies of voltage monitoring and current
monitoring on the charger
- Clarified sensitivity of the ground fault detector
- Modified criterion of current differential error and voltage
differential error
- Appendix
a) Vehicle relay welding detection method and charger
requirement
*TEPCO: Tokyo Electric Power Co., Inc.
CHAdeMO protocol rev. 0.9
Confidential information
Duplication, disclosure, and use of this information for anything other than its intended purpose is forbidden. CHAdeMO Association
Preface
This document was distributed to the CHAdeMO regular members.
The members shall keep this document in the confidence with the provisions of Article 8 on the
‘BYLAWS OF VOLUNTARY CHAdeMO ASSOCIATION (here after the agreement)’.
CHAdeMO Association aims to increase quick-charger installations worldwide indispensable to
further diffusion of electric vehicles and to standardize how to charge the vehicles.
The member who develops charger and/or vehicle in accordance with this document shall keep the
specifications on this document. The subjects not specified in this document, especially with safety,
laws and regulation related issues shall be complied with the national rule, domestic and/or
voluntary technical standards in each country and/or industry organization.
Some challenges remain after the editorial process of this document.
1. Enhancement of error dialogs and on-site service assistance
2. EMC requirement
3. Improving safety and quality
Self check
Vehicle (EV relay welding detection and prevention, prescreening test, etc.)
Charger (Electrical protection, prescreening test, etc.)
Bilateral check
Data communication with answer-back
4. Provisions for I/O signal
Signal quality and tolerance; Sequence circuit, CAN communication circuit
5. Protocol
Software version and ensuring the compatibility
Assistance for vehicle relay welding diagnosis
6. Usability
Assistance measures for releasing connector on the vehicle relay welded
situation
Improvement and/or updating charging time estimation
Pricing system and etc.,
The revision of this document is processed through session of the Technology Workshop stipulated
in Article 40.1(1) of the agreement. The members shall cooperate with CHAdeMO association in the
modification of the document in good faith
.
CHAdeMO protocol rev. 0.9
Confidential information
Duplication, disclosure, and use of this information for anything other than its intended purpose is forbidden. CHAdeMO Association
- Table of Contents -
Revision history
Preface
1. Scope of Application.............................................................................................................................1
1.1 Specifications format..................................................................................................................1
1.2 Standard specifications ...................................................................................................................1
1.3 Extended specifications ..................................................................................................................2
3. Terms and definitions............................................................................................................................3
3.1 Vehicle ............................................................................................................................................
3
3.2 Charger...........................................................................................................................................
3
3.3 Communications .............................................................................................................................4
3.4 Other...............................................................................................................................................
4
4. Design and safety policy.......................................................................................................................5
4.1 Charging method ............................................................................................................................5
4.2 Control signal lines..........................................................................................................................5
4.3 Data communication circuit.............................................................................................................5
4.4 Essential functions ..........................................................................................................................5
4.5 Protection against Electrical
Shock.................................................................................................7
4.6 Charging control .............................................................................................................................7
4.6.1 Start and termination ................................................................................................................7
4.6.2 Synchronization of charging control .........................................................................................7
4.6.3 Parameter exchange ................................................................................................................8
4.6.4 Measurement ...........................................................................................................................8
4.6.5 Monitoring and protection.........................................................................................................8
4.6.6 Error .........................................................................................................................................
9
4.6.7 Version control..........................................................................................................................9
5. Circuit configuration............................................................................................................................10
5.1 Main circuit....................................................................................................................................
10
5.1.1 Sep
aration of main power supply and control power supply ................................................10
5.1.2 Reve
rse current preventing diode........................................................................................10
5.1.3 Current-limiting fu
se.............................................................................................................10
5.1.4 Contr
ol power supply ...........................................................................................................11
5.1.5 Measurement.......................................................................................................................11
5.1.6 Grou
nding wire ....................................................................................................................11
5.1.7 Intern
al protection ................................................................................................................11
5.1.8 Grou
nd fault detection .........................................................................................................11
5.2 Sequence circuit ...........................................................................................................................13
5.2.1 Circuit volt
age ......................................................................................................................15
CHAdeMO protocol rev. 0.9
Confidential information
Duplication, disclosure, and use of this information for anything other than its intended purpose is forbidden. CHAdeMO Association
5.2.2 Signal line ............................................................................................................................15
5.2.3 Circuit insulation ..................................................................................................................15
5.2.4 Contr
ol policy of main circuit contactor ................................................................................15
5.2.5 Grou
nding wire ....................................................................................................................15
5.3 Communication circuit...................................................................................................................16
5.3.1 T
erminating resistor .............................................................................................................16
5.3.2 Noise filter............................................................................................................................16
5.3.3 T
wisted-pair line...................................................................................................................16
5.3.4 CAN trans
ceiver...................................................................................................................16
5.4 Connector lock circuit....................................................................................................................17
Ensure safety by electrically and me
chanically locking the charging connector so that it does not
become disengaged during charging and the insulation diagnosis during before charging, before
voltage verification after termination charging.....................................................................................17
5.4.1 Lock circuit...........................................................................................................................17
5.4.2 Lock mechanism..................................................................................................................17
5.4.3 Disconnection detection circuit ............................................................................................17
6. Communication control.......................................................................................................................18
Figure 6.1 CAN communication circuit................................................................................................18
6.1 Basic specifications ....................................................................................................................18
6.2 T
ransmission ..............................................................................................................................18
6.3 Recepti
on ...................................................................................................................................18
6.4 Error pr
ocessing.........................................................................................................................18
6.5 Dat
a format.................................................................................................................................19
6.5.1 Data format by vehicle............................................................................................................20
6.5.2 Dat
a format by charger ........................................................................................................22
7. Charging control .................................................................................................................................
24
7.1 Summary....................................................................................................................................
24
7.2 Implement
ation of the design policy ...........................................................................................27
7.2.1 Start and termination ..............................................................................................................27
7.2.2 Synchronization......................................................................................................................28
7.2.3 Parameter exchange ..............................................................................................................28
7.2.4 Measurement .........................................................................................................................28
7.2.5 Monitoring and protection.......................................................................................................28
7.4 Voltage and current measurement accuracy.................................................................................31
7.5 Con
nector lock release voltage and the characteristics .............................................................31
7.6 CHAde
MO control protocol number ...........................................................................................32
7.7 Over
all framework of charging control........................................................................................33
7.8 Control
timing .............................................................................................................................37
7.9 Control flow chart..........................................................................................................................50
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