IEC TS 61851-3-4:2023

Electric vehicles conductive charging system - Part 3-4: DC EV supply equipment where protection relies on double or reinforced insulation - General definitions and requirements for CANopen communication

IEC TS 61851-3-4:2023 This part of IEC 61851, which is a Technical Specification, applies to CANopen communication for the conductive transfer of electric power between the supply network and an electric road vehicle or a removable rechargeable energy storage system (RESS) or on-board rechargeable energy storage systems (RESS) of an electric road vehicle.
The energy management system (EMS) for control of power transfer between battery systems and voltage converter units (VCU) provides the communication for all devices that can take part in energy management control.
The basic application profile for energy management systems (EMS) consists of IEC TS 61851-3-4, IEC TS 61851-3-5, IEC TS 61851-3-6, IEC TS 61851-3-7.

General Information

• Status: Published
• Publication Date: 17-Jul-2023
• ICS: 43.120 - Electric road vehicles
• Technical Committee: TC 69 - Electrical power/energy transfer systems for electrically propelled road vehicles and industrial trucks
• Drafting Committee: WG 10 - TC 69/WG 10
• Current Stage: PPUB - Publication issued
• Start Date: 31-Oct-2022
• Completion Date: 18-Jul-2023

Standards Content (Sample)

IEC TS 61851-3-4
®

Edition 1.0 2023-07
TECHNICAL
SPECIFICATION

colour
inside


Electric vehicles conductive charging system –
Part 3-4: DC EV supply equipment where protection relies on double or
reinforced insulation – General definitions and requirements for CANopen
communication
IEC TS 61851-3-4:2023-07(en)

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IEC TS 61851-3-4

®


Edition 1.0 2023-07




TECHNICAL



SPECIFICATION








colour

inside










Electric vehicles conductive charging system –

Part 3-4: DC EV supply equipment where protection relies on double or

reinforced insulation – General definitions and requirements for CANopen

communication
























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 43.120 ISBN 978-2-8322-5730-2



  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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– 2 – IEC TS 61851-3-4:2023  IEC 2023
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 13
4 Symbols and abbreviated terms . 16
5 General conditions for the tests . 17
6 Physical layer specification . 18
6.1 General . 18
6.2 Medium access unit . 18
6.3 Transmission rates. 18
6.4 Node-ID assignment . 18
6.5 Network topology . 19
6.6 Gateway . 19
7 Error handling . 19
7.1 General . 19
7.2 Enhancement of the emergency message handling . 19
7.3 Pre-defined error field . 21
7.4 Error behaviour . 21
7.5 Additional error codes . 22
8 Operating principles . 23
8.1 General . 23
8.2 Functional description . 23
8.2.1 General . 23
8.2.2 Voltages, currents, loads . 23
8.2.3 Activating of the energy management system (EMS) . 24
8.2.4 Connection and disconnection of devices . 25
8.2.5 "Sleep" . 25
8.3 Use case specific definitions for EMSs in EVs . 25
8.3.1 General . 25
8.3.2 EMS in operation . 25
8.3.3 Design and implementation for EV supply system configurations Types
"A-F" . 26
8.4 Virtual architecture of the EMS . 31
8.4.1 General . 31
8.4.2 Standard virtual EMS control network . 31
8.4.3 General application object (GAO) . 32
8.4.4 Energy management system controller (EMSC) . 33
8.4.5 Voltage converter unit (VCU) . 33
8.4.6 Battery system . 33
8.4.7 Security unit (optional) . 34
8.4.8 Manufacturer-specific virtual devices (optional) . 34
9 Finite state automaton (device modelling) . 34
9.1 General . 34
9.2 EMS finite state automaton (FSA) . 35
9.2.1 State definition . 35

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IEC TS 61851-3-4:2023  IEC 2023 – 3 –
9.2.2 Transitions of the EMS FSA . 37
10 General CANopen communication capabilities in EMSs . 38
10.1 Network management . 38
10.2 SDO communication . 39
10.3 PDO communication . 39
10.4 Bootloader . 39
10.4.1 General . 39
10.4.2 Bootloader mode . 39
10.4.3 Starting and stopping the application program . 40
10.4.4 Application program file format . 41
10.4.5 Error management . 45
11 Representation of analogue values . 45
11.1 General . 45
11.2 Representation of generic analogue values . 45
11.2.1 Percent . 45
11.2.2 Temperature . 45
11.2.3 Temperature rate (∆T) . 45
11.2.4 Time (days) . 45
11.2.5 Time (minutes) . 45
11.2.6 Time (milliseconds) . 45
11.3 Electrical-related analogue value representation . 46
11.3.1 Current . 46
11.3.2 Electric charge. 46
11.3.3 Electric charge (for statistical purposes) . 46
11.3.4 Electric charge rate . 46
11.3.5 Energy power (for statistical purposes) . 46
11.3.6 Energy power . 46
11.3.7 Frequency . 46
11.3.8 Power . 46
11.3.9 Power factor . 46
11.3.10 Resistor . 46
11.3.11 Voltage . 46
11.4 Mechanical-related analogue value representation (optional) . 46
11.4.1 Angle/circular position . 46
11.4.2 Distance (long) . 47
11.4.3 Distance (short) . 47
11.4.4 Force . 47
11.4.5 Rotational speed. 47
11.4.6 Revolutions . 47
11.4.7 Torque . 47
11.4.8 Velocity . 47
11.5 Optical-related analogue value representation – Colour/brightness . 47
Annex A (informative) System architecture and use cases . 48
A.1 General . 48
A.2 Application profile for EMS . 48
A.2.1 General . 48
A.2.2 Maximum possible devices on a virtual EMS control network . 48
A.2.3 Minimum virtual EMS control network . 49
A.3 General application object. 50

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– 4 – IEC TS 61851-3-4:2023  IEC 2023
A.3.1 General . 50
A.3.2 Motor control unit . 50
A.3.3 Load monitoring unit . 50
A.3.4 Generator unit . 51
A.3.5 Load unit . 51
A.3.6 HMI unit . 51
A.3.7 Sensor unit . 51
A.3.8 Gateway . 51
A.3.9 IEC 61850 gateway . 51
A.4 Use cases (informative) . 51
A.4.1 EV use case . 51
A.4.2 Stationary use case . 52
Annex B (normative) Energy management system controller (EMSC) . 55
B.1 General . 55
B.2 Object dictionary . 55
B.2.1 General . 55
B.2.2 NMT communication objects . 55
B.2.3 Produced application objects . 56
B.2.4 Consumed application objects . 59
B.3 Tasks of an EMSC . 64
B.3.1 General . 64
B.3.2 Start-up . 65
B.3.3 Compatibility check . 65
B.3.4 Releasing devices . 65
B.3.5 "Sleep"- mode. 66
Annex C (informative) Implementation guidelines . 67
C.1 General . 67
C.2 Timings . 67
C.2.1 General . 67
C.2.2 Start up . 67
C.3 Master handling . 67
C.3.1 General . 67
C.3.2 Detecting master availability . 67
C.3.3 EMSC SDO handling . 67
C.4 Design of voltage converter unit communication for EVs . 68
C.4.1 Use cases. 68
C.4.2 Recommended power transfer protocol . 69
Annex D (normative) Power management via "sleep" . 79
D.1 General . 79
D.2 Operation principles . 79
D.2.1 General . 79
D.2.2 Pre-conditions . 79
D.2.3 Finite state automaton for power management . 79
D.3 Services . 81
D.3.1 General . 81
D.3.2 Service "query sleep objection" and "sleep objection" . 81
D.3.3 Service Set "sleep" . 82
D.3.4 Service "wake-up" . 83
D.3.5 Service "request sleep" . 84

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IEC TS 61851-3-4:2023  IEC 2023 – 5 –
D.4 Protocols . 84
D.4.1 Protocol "query sleep objection" . 84
D.4.2 Protocol "sleep objection" . 84
D.4.3 Protocol set "sleep" . 85
D.4.4 Protocol "wake-up" . 85
D.4.5 Protocol "request sleep" . 87
D.5 Power management timing – Sleep/wake-up . 87
D.6 Miscellaneous timing values . 88
Annex E (informative) Handling of multiple energy loads/sources. 89
E.1 General . 89
E.2 Consecutive power transfer to battery systems without power loss. 89
E.3 Parallel charge and discharge . 90
Annex F (normative) Communication connector . 92
F.1 General . 92
F.2 Configuration of 4-II for configuration type B . 92
F.3 NFC description . 93
F.4 Communication connector . 98
Annex G (informative) Orientation . 100
G.1 General . 100
G.2 Orientation definitions for pedal driven EVs. 100
G.3 Orientations for non- pedal driven EV applications . 100
Bibliography . 102

Figure 1 – Protocol emergency write for energy management applications . 20
Figure 2 – EV supply system cConfiguration type A . 27
Figure 3 – EV supply system configuration type B . 28
Figure 4 – EV supply system cConfiguration type C . 29
Figure 5 – EV supply system configuration type D . 29
Figure 6 – EV supply sytem configuration type E . 30
Figure 7 – EV supply system configuration type F . 30
Figure 8 – Conversion device for configuration type C . 31
Figure 9 – Virtual standard architecture of the EMS . 32
Figure 10 – Remote and local control . 35
Figure 11 – EMS FSA . 37
Figure 12 – Flow chart for switching between bootloader mode and application . 40
Figure 13 – Application program . 41
Figure 14 – Program identifier 1 . 41
Figure 15 – Program identifier 2 . 41
Figure 16 – Program identifier 3 . 42
Figure 17 – Program identifier 4 . 42
Figure 18 – Program identifier 5 . 42
Figure 19 – Example for program identifier handling . 43
Figure 20 – Object structure. 47
Figure A.1 – Virtual maximum architecture of the EMS. 49
Figure A.2 – Virtual minimum architecture of the EMS . 50

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– 6 – IEC TS 61851-3-4:2023  IEC 2023
Figure A.3 – EMS application in EV . 52
Figure A.4 – Typically stationary photovoltaic hybrid off-grid application . 53
Figure A.5 – Use case according to self-consumption regulation . 54
Figure B.1 – Value structure . 56
Figure B.2 – Object structure . 57
Figure B.3 – Value structure . 58
Figure B.4 – Value structure . 64
Figure C.1 – Voltage converter unit used as power supply for EV . 69
Figure C.2 – Sequence diagram for startup of the connection . 70
Figure C.3 – Sequence diagram "New device connected" . 71
Figure C.4 – Preparation of the power transfer procedure . 72
Figure C.5 – Configuration of limitations . 75
Figure C.6 – Start up procedure for initiate power transfer . 76
Figure C.7 – Power transfer in progress . 78
Figure D.1 – Power management FSA . 80
Figure D.2 – "Sleep" inhibited by objection . 82
Figure D.3 – Transition into "sleep" without objection . 82
Figure D.4 – Execution of "query sleep objection" service for a device in "sleep" . 83
Figure D.5 – Execution of "wake-up" service . 83
Figure D.6 – Execution of "request sleep" service . 84
Figure D.7 – Protocol "query sleep objection" . 84
Figure D.8 – Protocol "sleep objection" . 85
Figure D.9 – Protocol set "sleep" . 85
Figure D.10 – Protocol "wake-up" . 86
Figure D.11 – Protocol "wake-up" . 86
Figure D.12 – Protocol "request sleep" . 87
Figure D.13 – "Query sleep objection" protocol timing . 87
Figure F.1 – Configuration 4-II communication only . 93
Figure F.2 – Position of NFC .
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