Bsi bs en 61851 24 2014

BS EN 61851-24:2014
corrigendum June 2015
BSIncorporating
EN 61851-24:2014

BSI Standards Publication

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


BS EN 61851-24:2014

BRITISH STANDARD
National foreword
This British Standard is the UK implementation of EN 61851-24:2014. It is
identical to IEC 61851-24:2014, incorporating corrigendum June 2015.
The start and finish of text introduced or altered by corrigendum is
indicated in the text by tags. Text altered by IEC corrigendum June 2015
is indicated in the text by .
The UK participation in its preparation was entrusted to Technical
Committee PEL/69, Electric vehicles.
A list of organizations represented on this committee can be obtained
on request to its secretary.
This publication does not purport to include all the necessary provisions
of a contract. Users are responsible for its correct application.

© The British Standards Institution 2016.
Published by BSI Standards Limited 2016
ISBN 978 0 580 90993 1
ICS 43.120

Compliance with a British Standard cannot confer immunity from
legal obligations.
This British Standard was published under the authority of the Standards
Policy and Strategy Committee on 30 June 2014.

Amendments/corrigenda issued since publication
Date

Text affected

29 February 2016Implementation of IEC corrigendum June 2015


BS 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 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
(CEI 61851-24:2014)

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


BS 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
to be implemented at national level by
publication of an identical national
standard or by endorsement
latest date by which the national

standards conflicting with the
document have to be withdrawn

(dop)

2015-01-11

(dow)

2017-04-11

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.


BS EN 61851-24:2014
EN 61851-24:2014

-3-

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

IEC 61851-1

2010

Electric vehicle conductive charging system - EN 61851-1
Part 1: General requirements

2011

IEC 61851-23

2014

Electric vehicle conductive charging system - EN 61851-23
Part 23: D.C. electric vehicle charging station

2013

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
Road vehicles - Controller area network
(CAN) Part 1: Data link layer and physical signalling

-

Road vehicles - Controller area network
(CAN) Part 2: High-speed medium access unit

-

ISO 11898-1

2003

ISO 11898-2

2003

EN/HD

-

Year

-


–4–

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

CONTENTS
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

BS 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 2 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.


–6–

BS EN 61851-24:2014
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,
requirements

Electric

vehicle

conductive

charging

system – Part

1:

General

IEC 61851-23:2014, Electric vehicle conductive charging system – Part 23: DC electric
vehicle charging station
ISO/IEC 15118-1 1 , Road vehicles – Vehicle to grid communication interface – Part 1: General
information and use-case definition
ISO/IEC 15118-2:— 1 , Road vehicles – Vehicle to grid communication interface – Part 2:
Technical protocol description and open systems interconnections (OSI) layer requirements
ISO/IEC 15118-3:— 1 , 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

1  To be published.


BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

3

–7–

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™ 1 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.

______________
1 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.


BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

–8–

IEC 61851-24

DCCCF
(DC
charging
control
function)

Digital
communication
interface

Digital
communication
interface

VCCF
(Vehicle
charging
control
function)

Controller

Electric vehicle

DC.EV charging station

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

No.

Information

Description

a-1

Current request for the controlled
current charging (CCC) system

Exchange of current value requested by
EV

a-2

Voltage request for the controlled
voltage charging (CVC) system

Exchange of voltage value requested by
EV

Relevant
requirement
in IEC 61851-23:—
(unless specified as
IEC 61851-1)
6.4.3.101
DC supply
- 6.4.3.101
DC supply
- 6.4.3.105

a-3

Maximum rated voltage of d.c. EV
charging station

Exchange of maximum rated voltage value
of d.c. EV charging station

Compatibility
assessment
- 6.4.3.107
Protection against

overvoltage at the
battery
- 6.4.3.101

a-4

Maximum rated current of d.c. EV
charging station

Exchange of maximum rated current value
of d.c. EV charging station

DC supply for EV
- 6.4.3.105
Compatibility
assessment

b-1

Communication protocol

Exchange of software version of a
charging system

b-2

Maximum voltage limit of EV

Exchange of maximum voltage limit value
of vehicle.

b-3

EV minimum current limit, only for
the controlled voltage charging
(CVC) system

Under consideration.

6.4.3.105
Compatibility
assessment


BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

No.

Information

–9–

Description
Exchange of the result of insulation test
before charging

c

Insulation test result

d

Short circuit test before charging

Exchange of information on short circuit
test before charging

e

Charging stopped by user

Exchange of information on charge stop
command by the user of d.c. EV charging
station

f

EVSE real time available load
current (optional)

- If insulation test fails, a signal is sent that
charging is not allowed.

Exchange of EVSE real time available load
current for demand management. Required
for system providing that function.

Relevant
requirement

in IEC 61851-23:—
(unless specified as
IEC 61851-1)
6.4.3.106
Insulation test before
charging
6.4.3.110
Short circuit test
before charging
6.4.3.111
User initiated
shutdown
6.4.4.2 (of
IEC 61851-1)
Detection/adjustment of
the real time available
load current of EVSE

Detection of loss of digital communication
g

Loss of digital communication

- If a receiver does not get information
expected to receive within time out period,
it is considered as loss of digital
communication.

9.4
Breaking capacity

Notification of zero current confirmed
h-1

h-2

Zero current confirmed

Welding detection

- Station informs EV that low current
condition has been met (to allow connector
unlocking)
Exchange of information on the whole
process of welding detection

102.5
Charging control
process and state


– 10 –

BS EN 61851-24:2014
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.


Initialization

Charging
control
stage

Handshaking

Charge
preparation

None

Wake up of DCCCF and VCCF

Exchange of charging control
parameters

None
N/A

Communication established,
parameters exchanged, and
compatibility checked

Connector locked

Insulation test for d.c. power line

Pre-charge (depending on the system
architecture)

DC-B1→
DC-B2

DC-B2
→DC-B3

DC-B3

DC-B3

Notification of connector
locked status

Preparation for digital
communication

Communication data initialization

DC-B1

None

Connector plugged in

DC-B1

None

Digital
communication action

Vehicle unconnected

High level action at system level a

DC-A

State

N/A

Charging system malfunction

Vehicle connector lock

Battery incompatibility

–

–

Available output voltage
Available output current

–

Control protocol number

–

–

(default CAN)

None

N/A

N/A

From d.c. EV charging station

Vehicle charging enabled

–

N/A

None

None

Target battery voltage

Maximum charging time

Maximum battery voltage

Rated capacity of battery

Control protocol number

From vehicle

–

–

–

–

–

(default CAN)

(default CAN)

N/A

N/A

Parameter

Table A.1 – Communication actions and parameters during d.c. charging
control process between system A station and vehicle (1 of 2)

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014
– 11 –


a

Charging
control
stage

Energy transfer

Connector unlocked

End of charge at communication level

Connector unplugged

DC-B’4

DC-A

Welding detection (by vehicle)

DC-B’1→
DC-B’2

DC-B’3

Zero current confirmed

DC-B’1

DC power line voltage verification

Current suppression

DC-C,(D)
→DC-B’1

DC-B’2

Charging by voltage demand (for CVC)

DC-C or
DC-D

Vehicle side contactors open

Charging by current demand (for CCC)

DC-C or
DC-D

DC-B’2

Vehicle side contactors closed

High level action at system level a

DC-C or
DC-D

State

Output current

Notification of request value of –
charging current (or voltage)
–
Charging system malfunction

–

Charging stop control
Output voltage
Output current
Station status
Charging system malfunction

–
–
–
–
–

Vehicle connector lock
None

Notification of connector
unlocked status
Terminate the digital
communication

N/A

Output voltage

None

None

Station status

–

N/A

Station malfunction

–

Notification of present voltage

None

Notification of energy transfer
shut-off

Request of energy transfer
shut-off

N/A

Output voltage

–
Remaining charging time

Station status

None

Vehicle shift lever position

N/A

None

None

None

None

None

Vehicle charging enabled

N/A

Charging system fault

–

Charging current request

From vehicle

–

–

None

Parameter
From d.c. EV charging station

–

Notification of vehicle main
contactor closed status

Digital
communication action

Table A.1 (2 of 2)

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

Shutdown

– 12 –

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014


BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

A.3

– 13 –

Digital communication of d.c. charging control

The parameters for digital communication– of
control
shall be exchanged
2 –d.c. chargingIEC
61851-24:2014/COR1:2015
according to the sequence diagram as shown in Figure A.1.
© IEC 2015


DC. EV charging station
DC. EV charging station

Signal / digital data
Signal / digital data

Vehicle
Vehicle

Switch(d1):ON signal sensing device(f):ON
Switch(d1):ON signal sensing device(f):ON
"Charging Start (CP)" signal
"Charging Start (CP)" signal

Receive "Charging Start (CP)" signal
Receive "Charging Start (CP)" signal

Start request
Start request

Transmit "Charging Start (CP)" signal
Transmit "Charging Start (CP)" signal

Receive initial vehicle digital data and
Receive
initial vehicle
data
and
transmit charger
digitaldigital
data in
return
transmit charger digital data in return
Process the information for charge control
Process
the information
for charge control
before
charging
(battery compatibility,
charging
before charging
compatibility,
charging
time(battery
calculation

etc.)
time calculation etc.)

Lock vehicle connector
Lock vehicle connector

Digital communication
Digital communication

Digital communication
Digital communication
Signal sensing device(j):ON
switch(k):ON
Signal sensing device(j):ON
switch(k):ON
"Charging Permission(CP3)" signal
"Charging Permission(CP3)" signal
"Vehicle Charging Enabled" flag
"Vehicle Charging Enabled" flag
Digital communication
Digital communication

Start digital communication
Start digital communication
Process the information for charge control
Process
the information
charge
control
before

charging
(on-board for
battery
information,
before charging
(on-board
information,
maximum
chargingbattery
time etc.)
maximum charging time etc.)

Transmit the signal and parameter of vehicle
Transmit the signal
parameter of vehicle
setup and
completion
setup completion

Check that EV contactors are surely opened
Check
EV contactors
opened
(voltagethat
of d.c.
power line are
is 10surely
V or less)
(voltage of d.c. power line is less than 10 V)
Isolation test on d.c. power line

Isolation test on d.c. power line

Check the termination of isolation test
Check the
termination
of is
isolation
(Voltage
of d.c.
power line
20 V ortest
less)
(Voltage of d.c. power line is less than 20 V)
Transmit "Charging Start (CP2)" signal
Transmit "Charging Start (CP2)" signal

Start charging current output
Start charging current output

signal sensing device(g):ON
Switch(d2):ON
signal sensing device(g):ON
Switch(d2):ON
"Charging Start (CP2)" signal
"Charging Start (CP2)" signal

Digital communication
Digital communication

Close EV contactors 'c'

Close EV contactors 'c'

Transmit "Charging Current Request"
Transmit "Charging Current Request"

Charging completed
Charging completed
Signal sensing device(j):OFF
Signal sensing device(j):OFF

Stop charging
Stop charging

switch(k):OFF
switch(k):OFF

"Vehicle Charging Enabled" flag
"Vehicle
Charging
Enabled"
flag
"Charging
Stop Control"
flag
"Charging Stop Control" flag
Digital communication
Digital communication

Transmit the signal and parameter of charging
Transmit the signal

and
parameter of charging
stop
request
stop request

Check that d.c. current is 5 A or less
Check that d.c. current is less than 5A

Check that voltage of d.c. power line is
Check that voltage
ofless
d.c. power line is less than
10 V or
10 V

Unlock vehicle connector
Unlock vehicle connector

Open EV contactors 'c'
Open EV contactors 'c'
Change "Vehicle Connector Lock" flag to 0
Change "Vehicle Connector Lock" flag to 0
Digital communication
Digital communication

Terminate digital communication
Terminate digital communication

Terminate digital communication

Terminate digital communication

IEC
IEC 0679/14



For symbols, see Table AA.1 of IEC 61851-23:2014.
For symbols, see Table AA.1 of IEC 61851-23:—.

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

Table A.2 – Exchanged parameter during d.c. charging control process between system
A station and vehicle (1 of 4)


A.4

Parameter definition

a-1

request

terminals

Current value requested by EV during
chargingvalue requested by EV during
Current
charging

charging
by EV protocol to which
Software calculated
version of control
EV corresponds
Software
version of control protocol to which
EV
corresponds
Targeted
charging voltage at the vehicle inlet
terminals
Targeted charging voltage at the vehicle inlet

Maximum charging time permitted by EV, set
by minute charging time permitted by EV, set
Maximum
by minute
Estimated remaining time before the end of
charging calculated
EVbefore the end of
Estimated
remainingby
time

by 10 s

Rated capacity of battery
Fixed value for charging rate indication,
which value
is the for
maximum
charging
rate (100 %)
Fixed
charging
rate indication,
of vehicle
battery
which
is the
maximum charging rate (100 %)
of vehicle battery
Maximum charging time permitted by EV, set
by 10 s charging time permitted by EV, set
Maximum

charging to protect the vehicle battery
Rated capacity of battery

Replace the reference to "DIN 70121" by "DIN SPEC 70121".

C.1 General

Replace the reference to "Table A.1" by "Table A.2".

A.5.3 Transmission

a-1

number
Target battery voltage

Target battery voltage
Charging-currentrequest
Charging-current-

b-1

time
Control protocol
number protocol
Control

(set
by minute)
Estimated
charging
time
Estimated charging

(set
by 10 charging
s)
Maximum

time
Maximum charging
(set by minute)
time

rate indication
Maximum charging
time
Maximum
charging
(set by 10 s)
time

battery
Constant of charging
rate indication
Constant
of charging

Maximum battery
voltage battery
Maximum
voltage
Rated capacity of
batterycapacity of
Rated

Content

Parameter

The maximum voltage value at the vehicle
inlet maximum
terminals,voltage
at which
the station
stops
The
value
at the vehicle
charging
to protect
the vehicle
battery
inlet
terminals,
at which
the station
stops

Content

Parameter

H'102.3

H'102.2
H'102.3

EV

H'102.0
H'102.1,
H'102.2
H'102.1,

EV

EV

EV

EV

EV

EV
EV

H'101.3
H'101.3

H'102.0

EV

EV

H'101.1

H'101.2

EV

H'101.1

EV

EV

H'100.6

H'101.2

EV

EV

EV

EV

EV

Source

Source

H'100.6

H'101.6

H'100.5
H'101.5,
H'101.6
H'101.5,

H'100.4,
H'100.5
H'100.4,

ID.byte(bit)

CAN ID
ID.byte(bit)
CAN ID

station A
System
station

station A
System
station
System A

station
System A
station A
System

station
System A

System A
station A
System
station
System A
station A
System

System A
station A
System
station

station

station
System A
station A
System

station
System A
station A
System

System A
station A

System

Destination

Destination

Data
update
Data
rate
update

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

rate

Table A.2 – Exchanged parameter during d.c. charging
control
process
between system
A station
and
vehicle
(1 of 4)
Table
A.2 – Exchanged
parameter
during

d.c.
charging
control process between system A station and vehicle (1 of 4)

V

A

A

V

V

min

min

min

min

s

s

%

%

kWh

kWh

V

Unit

Unit

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Status flag

Status flag

to 255 A)
1(0A/bit
(0 to 255 A)

to 600 V)
1(0V/bit
(0
to
600 V)
1 A/bit



(0
to 254 min)
1/bit
(0 to 255)
1/bit

(0
to 255)
1 V/bit

1 min/bit
to 255 min)
1(0min/bit
(0 to 255 min)
1 min/bit
to 254 min)
1(0min/bit

10 s/bit
(0 to
2 540 s)
10
s/bit
(0 to 2 540 s)

1 % bit,100 %
1(fixed)
%/bit (100 %:
fixed)

0,1 kWh/bit

0,11 kWh/bit

1 V/bit

1 V/bit

(range)

Resolution
(range)
Resolution

IEC 61851-24:2014/COR1:2015
 IEC 2015

b-1

b-2

b-2

Table 1

Item in
Table
Item in1



As follows:

The definition of parameters during d.c. charging control process are shown in Table A.2.
Add the data update rate "100 ms" in the 5th row.

Replace the resolution (range) in the 3rd row, "1 % bit,100 % (fixed)" by "1 %/bit (100 %: fixed)".

– 14 –

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

–3–


g

Item in
Table 1

H'102.5(1)

H'102.5(2)

H'102.5(4)

H'102.4(0)

H'102.4(1)

Status flag indicating the shift lever position

Status flag indicating a malfunction caused
by EV or the station, and detected by EV

Status flag indicating the EV contactor status

Status flag indicating the request of EV to
stop charging control

Status flag indicating whether or not the
vehicle battery voltage exceeds the
maximum limit specified by EV

Status flag indicating whether or not the
vehicle battery voltage is less than the lower
limit specified by EV

Vehicle shift lever
position

Charging system fault

Vehicle status

Normal stop request
before charging

Battery overvoltage

Battery undervoltage

H'102.5(3)

H'102.5(0)

Status flag indicating charge permission
status of EV

Vehicle charging
enabled

H'102.6

CAN ID
ID.byte(bit)

Charging rate of vehicle battery

Content

Charging rate

Parameter

EV

EV

EV

EV

EV

EV

EV

EV

Source

Table A.2 (2 of 4)

System A
station

System A
station

－

－

－

－

System A
station

System A
station

－

－

－

100 ms

Data
update
rate

System A
station

System A
station

System A
station

System A
station

Destination

－

－

－

－

－

－

－

%

Unit

0:normal,
1:fault

0:normal,
1: fault

0: no request,
1: request to
stop

0: EV contactor
closed or
during welding
detection,
1: EV contactor
open or

welding
detection
finished

1: fault

0: normal,

0: “Parking”
position,
1: other
position

0: disabled,
1: enabled

Status flag

1 %/bit
(0 % to 100 %)

Resolution
(range)

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014
– 15 –


H'102.4(4)

H'108.3
H'108.4,
H'108.5
H'109.0
H'109.1,
H'109.2

Status flag indicating whether or not the
vehicle battery voltage deviates from the
output voltage measured by the station

Identifier indicating whether or not the station
deals with EV contactor welding detection

Maximum output voltage value at the vehicle
connector terminals

Maximum output current value of the station

Threshold voltage to stop the charging
process in order to protect vehicle battery

Software version number of control protocol
or charging sequences that the station deals
with

Supply voltage value of the output circuit in
the station

Battery voltage
deviation error

EV contactor welding
detection support
identifier

Available output
voltage

Available output
current

Threshold voltage

Control protocol
number

Output voltage

h-2

a-3

a-4

b-2

b-1

H'108.1,
H'108.2

H'108.0

H'102.4(3)

Status flag indicating whether or not the
temperature of vehicle battery exceeds the
maximum limit

High battery
temperature

CAN ID
ID.byte(bit)
H'102.4(2)

Content

Status flag indicating whether or not the
output current deviates from EV requested
current

Parameter

Battery current
deviation error

Item in

Table 1

System
A station

System
A station

System
A station

System
A station

System
A station

System
A station

EV

EV

EV

Source

Table A.2 (3 of 4)

EV

EV

EV

EV

EV

EV

System A
station

System A
station

System A
station

Destination

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

－

－

－

Data
update
rate

V

V

A

V

－

－

－

Unit

-

-

-

0:not
supporting
vehicle welding
detection,
1 or more:
supporting
vehicle welding
detection

0:normal,
1: fault

0:normal,
1:fault

0:normal,
1: fault

Status flag

1 V/bit
(0 to 600 V)

(0 to 255)

1 / bit

1 V/bit
(0 to 600 V)

1 A/bit
(0 to 255 A)

1 V/bit
(0 to 600 V)

Resolution
(range)

– 16 –

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014


H'109.5(1)
H'109.5(2)
H'109.5(3)

H'109.5(4)

H'109.5(5)

Status flag indicating whether or not there is
a malfunction caused by the station

Status flag indicating the electromagnetic
lock status of vehicle connector

Status flag indicating the compatibility of
vehicle battery with the output voltage of
station

Status flag indicating whether or not there is
a problem with EV, such as improper
connection

Status flag indicating whether or not the
station proceeds with shutdown process

Vehicle connector lock

Battery incompatibility

Charging system
malfunction

Charger stop control

d

e

H'109.7

Station malfunction

Remaining time before the end of charging
(counted by min)

Remaining charging
time
(counted by min)

H'109.6

H'109.5(0)

Remaining time before the end of charging
(counted by 10 s)

Remaining charging
time (counted by 10 s)

H'109.3

CAN ID
ID.byte(bit)

Status flag indicating the energy transfer
from the station

Supply current value of the output circuit in

the station

Content

Output current

Parameter

Station status

c
h-1

Item in
Table 1

System
A station

System
A station

System
A station

System
A station

System
A station

System
A station

EV

EV

EV

EV

EV

EV

EV

EV

System
A station
System
A station

EV

Destination

System

A station

Source

Table A.2 (4 of 4)

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

100 ms

Data
update
rate

-

-

-

-

-

-

min

s

A

Unit

0: operating,
1: shutdown or
stop charging

0: normal,
1: malfunction

0:compatible,
1: incompatible

0: unlocked,
1: locked

0: normal,
1: fault

0: standby,
1: charging

-

Status flag

1 min/bit
(0 to 255 min)

10 s/bit
(0 to 2540 s)

1A/bit
(0 to 255 A)

Resolution

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014
– 17 –


– 18 –

A.5

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

Physical/data link layer

A.5.1

Specifications

The physical/data link layer specifications are shown in Table A.3.
Table A.3 – The physical/data link layer specifications for system A
Communication protocol
Communication
system

ISO 11898-1 and ISO 11898-2
The extension bit (12 − 29 bit) is not used.

Transmission rate (kbps)

500

Cycle

100 ms ± 10 %

Communication circuit

A.5.2

The CAN communication circuit is established to exchange parameters, i.e. voltage, current,
status flags, and fault flags, which are necessary for the charging control.
–

Terminating resistor
1:1 communication is assumed. The vehicle and the d.c. EV charging station shall be
equipped with terminating resistors.

–

Noise filter
The vehicle and the d.c. EV charging station shall be equipped with noise filters to reduce
the conducted noise of the common mode and differential mode.

–

Twisted-pair line
Twisted pair line shall be utilized as the communication line that links the d.c. EV charging
station with the vehicle so as to reduce differential mode noise.

–

CAN transceiver
CAN transceiver shall be equipped to send and receive CAN communication data.

The CAN-bus circuit shall be established independently for d.c. charging, as shown in
Figure A.2.
Charger side

Vehicle side
TX

TX
CAN
IC

Terminating
resistor

Noise
filter

Noise
filter
Twisted pair line

Terminating
resistor

CAN
IC

RX

RX

IEC 0680/14

Figure A.2 – CAN-bus circuit diagram

A.5.3

Transmission

Data frames shall
shall be
betransmitted
transmittedininascending
ascendingorder
orderofof
number
specified
in Table
The.
IDID
number
specified
in 
TableA.1.
A.2 
The data
frames
be continuously
transmitted
100
%) interval
interval through
through the
data
frames

shallshall
be continuously
transmitted
at at
100
msms(±(±1010%)
charging process.


BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014
A.5.4

– 19 –

Reception

When the vehicle or the d.c. EV charging station receives data frames from the other party,
the received frames should not be echoed. Furthermore, the received error frames shall be
destroyed.
A.5.5

CAN communication

Figure A.3 shows the basic specifications related to the dedicated CAN communication
between the vehicle and the d.c. EV charging station.

Network within
the d.c. EV
charging station

Network within
the vehicle

DC.EV
charging
station

Vehicle

CAN-bus
IEC 0681/14

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


BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

– 20 –

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

This annex is not applicable to Europe

B.1

General

This annex shows the specification of d.c. charging control digital communication for the d.c
EV charging station of system B (in this annex, referred to as "System B station" or "charger")
as specified in Annex BB of IEC 61851-23:—.

B.2

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 B.1.
Charger

Signal/ digital
information

Vehicle

Physical connection
and power on

Signal

Physical connection
and power on

Charge handshake
Charge parameter

configuration
Charging

Charge ending

Disconnection

Digital

Digital

Digital

Digital

Signal

Charge handshake
Charge parameter
configuration
Charging

Charge ending

Disconnection
IEC 0682/14

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

B.3

Digital communication actions during charging control process

The communication actions and parameters during d.c. charging control process are shown in
Table B.1.


BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

– 21 –

Table B.1 – Communication actions and parameters during
d.c. charging control process between system B station and vehicle
Charging
control stage
(process)

Handshaking

Charging
parameter
configuration

Charging stage

Digital
communication
action
Confirm the

necessary
parameters of
battery and
charger.

Exchange of
charging control
parameters.

Send charging
status to each
other, according
to the battery
charge level
requirements
sent by Vehicle;
the charger
adjusts the
charging
process.

Charging ending
stage

Energy transfer
shut-off.

Communication
error

Restart
communication
program or stop
charging
process.

B.4

Information

Source

Destination

Parameter
cycle

Charger recognition
parameter

Charger

Vehicle

250 ms

Vehicle recognition
parameter

Vehicle

Charger

250 ms

Battery charge parameter

Vehicle

Charger

500 ms

Charger time
synchronization

Charger

Vehicle

500 ms

Charger max/min output
parameter

Charger

Vehicle

250 ms

Vehicle charge ready

Vehicle

Charger

250 ms

Charger output ready

Charger

Vehicle

250 ms

Battery charge
requirement

Vehicle

Charger

50 ms

Charger charge status

Charger

Vehicle

50 ms

Battery charge status 1

Vehicle

Charger

250 ms

Battery charge status 2

Vehicle

Charger

250 ms

Battery cell voltage

Vehicle

Charger

1s

Battery temperature

Vehicle

Charger

1s

Vehicle stopping
command

Vehicle

Charger

10 ms

Charger stopping
command

Charger

Vehicle

10 ms

Vehicle statistic data

Vehicle

Charger

250 ms

Charger statistic data

Charger

Vehicle

250 ms

Vehicle receiving error

Vehicle

Charger

250 ms

Charger receiving error

Charger

Vehicle

250 ms

Parameter definition

The definition of parameters during d.c. charging control process are shown in Tables B.2,
B.3, B.4, B.5 and B.6.

BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

– 22 –

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

Charger
recognition
parameter

Vehicle
recognition
parameter

Parameter

M a /O b

Unit

Resolution

Status flag
0x00:
unrecognized

Item in
Table 1

-

Recognition result

M

-

-

Charger number

M

-

-

-

-

Charger/charge station
location code

O

-

-

-

-

Vehicle communication
protocol version

M

-

-

-

b-1

Battery type code

M

-

-

-

-

Battery system rated
capacity

M

Ah

0,1 Ah/bit

-

-

Battery system rated voltage

M

V

0,1 V/bit

-

-

Battery manufacturer code,
ASCII

O

-

-

-

-

Battery pack number

O

-

-

-

-

Battery pack product date

O

-

-

-

-

Battery pack charging times

O

-

1/bit

-

-

Battery pack property right
mark

O

-

-

Vehicle identification number
(VIN)

O

-

-

a

M = Mandatory

b

O = Optional

0xAA:
recognized

0: Lease
1: Private
-

-

NOTE The communication protocol version includes 3 bytes. The current version is V1.0, which is expressed:
Byte 3, Byte 2 – 0001H; Byte1 – 00H.


BS EN 61851-24:2014
IEC 61851-24:2014 © IEC 2014

– 23 –

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

M a /O b

Unit

Resolution

Status flag

Item in
Table 1

Maximum permissible charge
voltage of battery cell

M

V

0,01 V/bit

-

-

Maximum permissible charge
current

M

A

0,1 A/bit

-

-

Maximum permissible charge
energy

M

kWh

0,1 kWh/bit

-

-

Maximum permissible charge
voltage of battery system

M

V

0,1 V/bit

-

b-2

Maximum permissible
temperature

M

°C

1 °C/bit

-

-

The initial SOC

M

%

0,1 %/bit

-

-

Total voltage of battery
system

M

V

0,1 V/bit

-

-

Year/month/date/hour/minute/
second

O

-

-

-

-

M

V

0,1 V/bit

-

a-3

M

V

0,1 V/bit

-

-

M

A

0,1 A/bit

-

a-4

-

Information

Battery charge
parameter

Charger time
synchronization

Maximum output voltage
Charger max/min
Minimum output voltage
output parameter
Maximum output current
Vehicle charge
ready

If the vehicle is ready to be
charged

M

-

Charger output
ready

If the charger is ready to
charge

M

-

a

M = Mandatory

b

O = Optional

-

0x00: unready
0xAA: ready
0x00: unready
0xAA: ready

-

-