Electric vehicle conductive charging system - Part 24: Digital communication between a d.c. EV charging station and an electric vehicle for control of d.c. charging

EN IEC 61851-24, together with IEC 61851-23, applies to digital communication between a d.c. EV charging station and an electric road vehicle (EV) for control of d.c. charging, with an a.c. or d.c. input voltage up to 1 000 V a.c. and up to 1 500 V d.c. for the conductive charging procedure. The EV charging mode is mode 4, according to IEC 61851-23. The charging station supplied by high voltage a.c. supply is not covered by this standard. Annexes A, B, and C give descriptions of digital communications for control of d.c. charging specific to d.c. EV charging systems A, B and C as defined in Part 23.

Konduktive Ladesysteme für Elektrofahrzeuge - Teil 24: Digitale Kommunikation zwischen einer Gleichstromladestation für Elektrofahrzeuge und dem Elektrofahrzeug zur Steuerung des Gleichstromladevorgangs

Système de charge conductive pour véhicules électriques - Partie 24: Communication digitale entre la borne de charge à courant continu et le véhicule électrique pour le contrôle de la charge à courant continu

L'IEC 61851-24:2014, avec la CEI 61851-23, s'applique à la communication digitale entre la borne de charge à courant continu pour véhicule électrique et un véhicule électrique (VE) pour le contrôle de la charge à courant continu, avec une tension d'entrée jusqu'à 1 000 V c.a. et jusqu'à 1 500 V c.c. pour la procédure de charge conductive. Le mode de charge du véhicule électrique est le mode 4, selon la CEI 61851-23. Les Annexes A, B et C donnent des descriptions de communications digitales pour le contrôle de la charge à courant continu spécifique aux systèmes A, B et C de charge à courant continu pour véhicule électrique définis dans la Partie 23.

Sistem kabelskega napajanja električnih vozil - 24. del: Digitalna komunikacija med enosmerno (d.c.) EV-napajalno postajo in električnim vozilom za krmiljenje enosmernega (d.c.) napajanja (IEC 61851-24:2014)

Standarda EN IEC 61851-24 in IEC 61851-23 se nanašata na digitalno komunikacijo med polnilno postajo za električna vozila z enosmernim tokom in električnim cestnim vozilom (EV) za nadzor polnjenja z enosmernim tokom z izmenično (a.c.) ali enosmerno (d.c.) vhodno napetostjo do 1000 V a.c. in do 1500 V d.c. Način polnjenja električnih vozil je način 4 v skladu s standardom IEC 61851-23. Ta standard ne zajema polnilnih postaj, ki jih napaja visokonapetostni izmenični tok. Priloge A, B in C podajajo opise digitalnih komunikacij za nadzor polnjenja z enosmernim tokom, značilnega za polnilne sisteme A, B in C za napajanje električnih vozil z enosmernim tokom, kot je določeno v delu 23.

General Information

Status
Published
Publication Date
15-Jul-2014
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Jul-2014
Due Date
13-Sep-2014
Completion Date
16-Jul-2014

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SLOVENSKI STANDARD
SIST EN 61851-24:2014
01-september-2014

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HQRVPHUQR GF (9QDSDMDOQRSRVWDMRLQHOHNWULþQLPYR]LORP]DNUPLOMHQMH
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Electric vehicle conductive charging system - Part 24: Digital communication between a

d.c. EV charging station and an electric vehicle for control of d.c. charging

Système de charge conductive pour véhicules électriques - Partie 24: Communication

digitale entre la borne de charge à courant continu et le véhicule électrique pour le

contrôle de la charge à courant continu
Ta slovenski standard je istoveten z: EN 61851-24:2014
ICS:
43.120 (OHNWULþQDFHVWQDYR]LOD Electric road vehicles
SIST EN 61851-24:2014 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61851-24:2014
---------------------- Page: 2 ----------------------
SIST EN 61851-24:2014
EUROPEAN STANDARD EN 61851-24
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2014
ICS 43.120
English Version
Electric vehicle conductive charging system - Part 24: Digital
communication between a d.c. EV charging station and an
electric vehicle for control of d.c. charging
(IEC 61851-24:2014)

Système de charge conductive pour véhicules électriques - Konduktive Ladesysteme für Elektrofahrzeuge - Teil 24:

Partie 24: Communication digitale entre la borne de charge Digitale Kommunikation zwischen einer

à courant continu et le véhicule électrique pour le contrôle Gleichstromladestation für Elektrofahrzeuge und dem

de la charge à courant continu Elektrofahrzeug zur Steuerung des
(CEI 61851-24:2014) Gleichstromladevorgangs
(IEC 61851-24:2014)

This European Standard was approved by CENELEC on 2014-04-11. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 61851-24:2014 E
---------------------- Page: 3 ----------------------
SIST EN 61851-24:2014
EN 61851-24:2014 - 2 -
Foreword

The text of document 69/273/FDIS, future edition 1 of IEC 61851-24, prepared by IEC/TC 69 "Electric

road vehicles and electric industrial trucks" was submitted to the IEC-CENELEC parallel vote and

approved by CENELEC as EN 61851-24:2014.
The following dates are fixed:
• latest date by which the document has (dop) 2015-01-11
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-04-11
• latest date by which the national
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent

rights.
Endorsement notice

The text of the International Standard IEC 61851-24:2014 was approved by CENELEC as a European

Standard without any modification.
---------------------- Page: 4 ----------------------
SIST EN 61851-24:2014
- 3 - EN 61851-24:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu
Publication Year Title EN/HD Year
IEC 61851-1 2010 Electric vehicle conductive charging system - EN 61851-1 2011
Part 1: General requirements
IEC 61851-23 2014 Electric vehicle conductive charging system - EN 61851-23 2013
Part 23: D.C. electric vehicle charging station
ISO/IEC 15118-1 Road vehicles – Vehicle to grid - -
communication interface -
Part 1: General information and use-case
definition
ISO/IEC 15118-2 Road vehicles – Vehicle to grid - -
communication interface -
Part 2: Technical protocol description and
open systems interconnections (OSI) layer
requirements
ISO/IEC 15118-3 Road vehicles - Vehicle to grid communication - -
interface -
Part 3 Physical layer requirements
ISO 11898-1 2003 Road vehicles - Controller area network - -
(CAN) -
Part 1: Data link layer and physical signalling
ISO 11898-2 2003 Road vehicles - Controller area network - -
(CAN) -
Part 2: High-speed medium access unit
---------------------- Page: 5 ----------------------
SIST EN 61851-24:2014
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SIST EN 61851-24:2014
IEC 61851-24
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric vehicle conductive charging system –
Part 24: Digital communication between a d.c. EV charging station and an
electric vehicle for control of d.c. charging
Système de charge conductive pour véhicules électriques –
Partie 24: Communication digitale entre la borne de charge à courant continu et
le véhicule électrique pour le contrôle de la charge à courant continu
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 43.120 ISBN 978-2-8322-1441-1

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 61851-24:2014
– 2 – IEC 61851-24:2014 © IEC 2014
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 7

4 System configuration ....................................................................................................... 7

5 Digital communication architecture .................................................................................. 7

6 Charging control process ................................................................................................. 7

7 Overview of charging control ........................................................................................... 7

8 Exchanged information for d.c. charging control .............................................................. 8

Annex A (normative) Digital communication for control of d.c. EV charging system A ........... 10

Annex B (normative) Digital communication for control of d.c. EV charging system B ........... 20

Annex C (normative) Digital communication for control of d.c. charging system C

(Combined system) ........................................................................................................ 27

Bibliography .......................................................................................................................... 29

Figure 1 – Digital communication between a d.c. EV charging station and an electric

vehicle for control of d.c. charging .......................................................................................... 8

Figure A.1 – Sequence diagram of d.c. charging control communication for system A ........... 13

Figure A.2 – CAN-bus circuit diagram ................................................................................... 18

Figure A.3 – Dedicated CAN communication between vehicle and d.c. EV charging

station .................................................................................................................................. 19

Figure B.1 – Sequence diagram of d.c. charging control communication for system B ........... 20

Table 1 – Exchanged information for d.c. charging control ...................................................... 8

Table A.1 – Communication actions and parameters during d.c. charging control

process between system A station and vehicle (1 of 2) ......................................................... 11

Table A.2 – Exchanged parameter during d.c. charging control process between

system A station and vehicle (1 of 4) .................................................................................... 14

Table A.3 – The physical/data link layer specifications for system A ..................................... 18

Table B.1 – Communication actions and parameters during d.c. charging control

process between system B station and vehicle ..................................................................... 21

Table B.2 – Parameters in charge handshake stage for system B ......................................... 22

Table B.3 – Parameters in charge parameter configuration stage for system B ..................... 23

Table B.4 – Parameters in charging stage for system B (1 of 2) ............................................ 24

Table B.5 – Parameters in charge ending stage for system B ............................................... 25

Table B.6 – Error parameters for system B ........................................................................... 25

Table B.7 – Physical/data link layer specifications for system B ........................................... 26

Table C.1 – Required exchanged parameters for d.c. charging control for system C ............. 28

---------------------- Page: 8 ----------------------
SIST EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC VEHICLE CONDUCTIVE CHARGING SYSTEM –
Part 24: Digital communication between a d.c. EV charging
station and an electric vehicle for control of d.c. charging
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61851-24 has been prepared by IEC technical committee 69:

Electric road vehicles and electric industrial trucks.
The text of this standard is based on the following documents:
FDIS Report on voting
69/273FDIS 69/280/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 61851 series, published under the general title Electric vehicle

conductive charging system, can be found on the IEC website.
---------------------- Page: 9 ----------------------
SIST EN 61851-24:2014
– 4 – IEC 61851-24:2014 © IEC 2014

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
---------------------- Page: 10 ----------------------
SIST EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014 – 5 –
INTRODUCTION

The introduction and commercialisation of electric vehicles has been accelerated in the global

market, responding to the global concerns on CO reduction and energy security.

Concurrently, the development of charging infrastructure for electric vehicles has also been

expanding. As supplementary system of a.c. charging system, d.c. charging is recognized as

an effective solution to extend the available range of electric vehicles, and different d.c.

charging systems are being used over the world. The international standardization in terms of

charging infrastructure including d.c. charging systems is indispensable for the diffusion of

electric vehicles, and this standard is developed for the manufacturers’ convenience by

providing general specifications for control communication protocols between off-board d.c.

charger and electric vehicles.
---------------------- Page: 11 ----------------------
SIST EN 61851-24:2014
– 6 – IEC 61851-24:2014 © IEC 2014
ELECTRIC VEHICLE CONDUCTIVE CHARGING SYSTEM –
Part 24: Digital communication between a d.c. EV charging
station and an electric vehicle for control of d.c. charging
1 Scope

This part of IEC 61851, together with IEC 61851-23, applies to digital communication between

a d.c. EV charging station and an electric road vehicle (EV) for control of d.c. charging, with

an a.c. or d.c. input voltage up to 1 000 V a.c. and up to 1 500 V d.c. for the conductive

charging procedure.

The EV charging mode is mode 4, according to IEC 61851-23. The charging station supplied

by high voltage a.c. supply is not covered by this standard.

Annexes A, B, and C give descriptions of digital communications for control of d.c. charging

specific to d.c. EV charging systems A, B and C as defined in Part 23.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61851-1:2010, Electric vehicle conductive charging system – Part 1: General
requirements

IEC 61851-23:2014, Electric vehicle conductive charging system – Part 23: DC electric

vehicle charging station

ISO/IEC 15118-1 , Road vehicles – Vehicle to grid communication interface – Part 1: General

information and use-case definition

ISO/IEC 15118-2:— , Road vehicles – Vehicle to grid communication interface – Part 2:

Technical protocol description and open systems interconnections (OSI) layer requirements

, Road vehicles – Vehicle to grid communication interface – Part 3
ISO/IEC 15118-3:—
Physical layer requirements

ISO 11898-1:2003, Road vehicles – Controller area network (CAN) – Part 1: Data link layer

and physical signalling

ISO 11898-2:2003, Road vehicles – Controller area network (CAN) – Part 2: High-speed

medium access unit
---------------------- Page: 12 ----------------------
SIST EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014 – 7 –
3 Terms and definitions

For the purpose of this document, the terms and definitions given in IEC 61851-1 and

IEC 61851-23 as well as the following apply.
3.1
digital communication

digitally encoded information exchanged between a d.c. EV charging station and an EV, as

well as the method by which it is exchanged.
3.2
parameter

single piece of information relevant to charging control, and that is exchanged between a d.c.

EV charging station and an EV using a form of digital communication
3.3
signal

data element that is communicated between a d.c. EV charging station and an EV using any

means other than digital communication
4 System configuration
The system configuration shall be in accordance with 102.2 of IEC 61851-23:—..
5 Digital communication architecture
In this standard, two digital communication architectures are used:

– one, based on CAN using a dedicated data communication circuit; CAN protocol is given

in ISO 11898-1; refer to Annex A and Annex B for specific implementation details; and

– the other, based on Homeplug Green PHY™ over the control pilot line; refer to Annex C

for specific implementation details.
6 Charging control process

The charging control process shall be in accordance with 102.5 of IEC 61851-23:—.

7 Overview of charging control

The digital communication of d.c. charging control covered by this standard is as shown in

Figure 1. This standard does not cover the control protocol internal to the d.c. EV charging

station, nor the vehicle, such as power control protocol for a.c./d.c. inverter of d.c. EV

charging station and battery management control in the vehicle.
______________

Homeplug Green PHY ™ is an example of a suitable product available commercially. This information is given for

the convenience of users of this document and does not constitute an endorsement by IEC of this product.

---------------------- Page: 13 ----------------------
SIST EN 61851-24:2014
– 8 – IEC 61851-24:2014 © IEC 2014
IEC 61851-24
VCCF
DCCCF
Digital (Vehicle
Digital
(DC
communication charging
communication
charging
interface control
interface
control
function)
function)
Controller
DC.EV charging station Electric vehicle
IEC 0678/14
Figure 1 – Digital communication between a d.c. EV charging
station and an electric vehicle for control of d.c. charging
8 Exchanged information for d.c. charging control

This clause describes information which shall be exchanged between a d.c. EV charging

station and a vehicle during the charging process according to IEC 61851-23. The information

in Table 1 is common to all systems described in Annexes A, B and C. Each information listed

in Table 1 is defined as a parameter in each annex. Each system may need additional

parameters, and these parameters are defined in each annex.
Table 1 – Exchanged information for d.c. charging control
Relevant
requirement
No. Information Description in IEC 61851-23:—
(unless specified as
IEC 61851-1)
Current request for the controlled Exchange of current value requested by
a-1
current charging (CCC) system EV
6.4.3.101

Voltage request for the controlled Exchange of voltage value requested by DC supply

a-2
voltage charging (CVC) system EV
- 6.4.3.101
DC supply
- 6.4.3.105
Compatibility
Maximum rated voltage of d.c. EV Exchange of maximum rated voltage value
a-3
assessment
charging station of d.c. EV charging station
- 6.4.3.107
Protection against
overvoltage at the
battery
- 6.4.3.101
DC supply for EV
Maximum rated current of d.c. EV Exchange of maximum rated current value
a-4
- 6.4.3.105
charging station of d.c. EV charging station
Compatibility
assessment
Exchange of software version of a
b-1 Communication protocol
charging system
6.4.3.105
Exchange of maximum voltage limit value
b-2 Maximum voltage limit of EV
of vehicle.
Compatibility
assessment
EV minimum current limit, only for
b-3 the controlled voltage charging Under consideration.
(CVC) system
---------------------- Page: 14 ----------------------
SIST EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014 – 9 –
Relevant
requirement
No. Information Description in IEC 61851-23:—
(unless specified as
IEC 61851-1)
Exchange of the result of insulation test
6.4.3.106
before charging
c Insulation test result
Insulation test before
- If insulation test fails, a signal is sent that
charging
charging is not allowed.
6.4.3.110
Exchange of information on short circuit
d Short circuit test before charging
Short circuit test
test before charging
before charging
6.4.3.111
Exchange of information on charge stop
e Charging stopped by user command by the user of d.c. EV charging
User initiated
station
shutdown
6.4.4.2 (of
IEC 61851-1)
Exchange of EVSE real time available load
EVSE real time available load
f current for demand management. Required
Detection/adjustment of
current (optional)
for system providing that function.
the real time available
load current of EVSE
Detection of loss of digital communication
9.4
- If a receiver does not get information
g Loss of digital communication
expected to receive within time out period,
Breaking capacity
it is considered as loss of digital
communication.
Notification of zero current confirmed
- Station informs EV that low current
h-1 Zero current confirmed 102.5
condition has been met (to allow connector
Charging control
unlocking)
process and state
Exchange of information on the whole
h-2 Welding detection
process of welding detection
---------------------- Page: 15 ----------------------
SIST EN 61851-24:2014
– 10 – IEC 61851-24:2014 © IEC 2014
Annex A
(normative)
Digital communication for control
of d.c. EV charging system A
A.1 General

This annex shows the specification of digital communication for control of the d.c EV

charging station of system A (in this annex, referred to as "system A station" or "station") as

specified in Annex AA of IEC 61851-23:—. More detailed information on system A is defined

in JIS/TSD0007.
A.2 Digital communication actions during charging control process

The communication actions and parameters according to the charging control process as

defined in Table 103 of IEC 61851-23:— are shown in Table A.1.
---------------------- Page: 16 ----------------------
IEC 61851-24:2014 © IEC 2014 – 11 –
SIST EN 61851-24:2014
Table A.1 – Communication actions and parameters during d.c. charging
control process between system A station and vehicle (1 of 2)
Charging Parameter
Digital
control State High level action at system level
communication action
From d.c. EV charging station From vehicle
stage
DC-A Vehicle unconnected None N/A N/A
DC-B1 Connector plugged in None N/A N/A
Wake up of DCCCF and VCCF None None (default CAN)
DC-B1
Preparation for digital
Communication data initialization (default CAN) (default CAN)
communication
– Control protocol number
– Control protocol number – Rated capacity of battery
Communication established,
– Available output voltage – Maximum battery voltage
DC-B1→ Exchange of charging control
parameters exchanged, and
DC-B2 parameters
– Available output current – Maximum charging time
compatibility checked
– Battery incompatibility – Target battery voltage
– Vehicle charging enabled
DC-B2 Notification of connector
Connector locked – Vehicle connector lock None
locked status
→DC-B3
DC-B3 Insulation test for d.c. power line None Charging system malfunction None
Pre-charge (depending on the system
DC-B3 N/A N/A N/A
architecture)
Initialization
Charge
Handshaking
preparation
---------------------- Page: 17 ----------------------
– 12 – IEC 61851-24:2014 © IEC 2014
SIST EN 61851-24:2014
Table A.1 (2 of 2)
Charging Parameter
Digital
control State High level action at system level
communication action
From d.c. EV charging station From vehicle
stage
DC-C or Notification of vehicle main
Vehicle side contactors closed None None
DC-D contactor closed status
– Station status
– Output voltage
– Charging current request
– Output current
DC-C or Notification of request value of
Charging by current demand (for CCC) – Charging system fault
DC-D charging current (or voltage)
– Remaining charging time
– Vehicle shift lever position
– Station malfunction
– Charging system malfunction
DC-C or
Charging by voltage demand (for CVC) N/A N/A N/A
DC-D
– Station status
– Charging stop control
DC-C,(D) Request of energy transfer
Current suppression Vehicle charging enabled
→DC-B’1 shut-off
– Output voltage
– Output current
– Station status
Notification of energy transfer
DC-B’1 Zero current confirmed
shut-off
– Charging system malfunction
DC-B’1→ None
Welding detection (by vehicle) None
DC-B’2
DC-B’2 Vehicle side contactors open None None None

DC-B’2 DC power line voltage verification Notification of present voltage Output voltage None

Notification of connector
DC-B’3 Connector unlocked Vehicle connector lock None
unlocked status
Terminate the digital
DC-B’4 End of charge at communication level None None
communication
DC-A Connector unplugged N/A N/A

The order of actions does not refer to the procedure of charging control process.

Shutdown Energy transfer
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SIST EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014 – 13 –
A.3 Digital communication of d.c. charging control

The parameters for digital communication of d.c. charging control shall be exchanged

according to the sequence diagram as shown in Figure A.1.
DC. EV charging station Signal / digital data Vehicle
Start request
Switch(d1):ON
signal sensing device(f):ON
Transmit "Charging Start (CP)" signal Receive "Charging Start (CP)" signal
"Charging Start (CP)" signal
Receive initial vehicle digital data and
Start digital communication
transmit charger digital data in return
Digital communication
Process the information for charge contr
...

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