1、DRAFT FOR DEVELOPMENTDD CLC/TS 50457-2:2008Conductive charging for electric vehicles Part 2: Communication protocol between off-board charger and electric vehicleICS 35.240.60; 43.120g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3
2、g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58DD CLC/TS 50457-2:2008This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008ISBN 978 0 580 57821 2National forewordThis Draft for Developm
3、ent is the UK implementation of CLC/TS 50457-2:2008.This publication is not to be regarded as a British Standard.It is being issued in the Draft for Development series of publications and is of a provisional nature. It should be applied on this provisional basis, so that information and experience o
4、f its practical application can be obtained.Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion to a European standard. A review of this publication will be initiated not later tha
5、n three years after its publication by the European organization so that a decision can be taken on its status. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards.According to the replies received by the end of the review perio
6、d, the responsible BSI Committee will decide whether to support the conversion into a European Standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent to the Secretary of the responsible BSI Technical Committee at British Standards House, 389 Chiswick H
7、igh Road, London W4 4AL.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 o
8、f a contract. Users are responsible for its correct application.Amendments/corrigenda issued since publicationDate CommentsTECHNICAL SPECIFICATION CLC/TS 50457-2 SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION March 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen d
9、e Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. CLC/TS 50457-2:2008 E ICS 35.240.60; 43
10、.120 Supersedes ENV 50275-2-4:1998English version Conductive charging for electric vehicles - Part 2: Communication protocol between off-board charger and electric vehicle Charge conductive pour vhicules lectriques - Partie 2: Protocole de transmission entre le chargeur extrieur et le vhicule lectri
11、que Konduktive Ladung von Elektrofahrzeugen - Teil 2: Kommunikationsprotokoll zwischen externem Ladegert und Elektrofahrzeug This Technical Specification was approved by CENELEC on 2007-03-01. CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make
12、the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, G
13、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword This Technical Specification was prepared by the CENELEC Reporting Secretariat 69, Electr
14、ic road vehicles and electric industrial trucks. The text of the draft was submitted to vote in accordance with the Internal Regulations, Part 2, Subclause 11.3.3.3 and was approved by CENELEC as CLC/TS 50457-2 on 2007-03-01. This Technical Specification is to be used in conjunction with EN 61851-1.
15、 This Technical Specification supersedes ENV 50275-2-4:1998. In the framework of the conversion of ENV 50275-2-4, Clause 2 has been updated. The following date was fixed: latest date by which the existence of the CLC/TS has to be announced at national level (doa) 2008-07-01 _ CLC/TS 50457-2:2008 2 C
16、ontents PageIntroduction . 4 1 Scope . 5 2 Normative references 5 3 Definitions . 5 4 Off-board charging system 6 5 Communication interchange 6 6 Service definition . 8 7 Communication session 8 8 Coding implementation 12 Annex A (informative) Communication: Example of normal operation . 22 Table 1
17、List of services used 8 Table 2 Use of services 9 CLC/TS 50457-2:2008 3 Introduction This Technical Specification “Conductive charging for electric vehicles“ is published in separate parts according to the following structure: This Technical Specification covers the physical, electrical and performa
18、nce requirements concerning devices for the charging system, when they are not already standardized. Part 1: D.C. charging station. Part 2: Communication protocol between off-board charger and electric vehicle. CLC/TS 50457-2:2008 4 1 Scope This Technical Specification applies to the communication d
19、ata link between external charger and electric road vehicle for the charging procedure, using the most common communication link. This Part 2 applies to communication data link between the off-board charging system with direct current and electric road vehicles. The aspects covered are the physical
20、layer, the data link layer and the communication applicative layer. This Technical Specification does not cover communication between dedicated off-board charger and their electric vehicle. Annex A gives an example of normal operation. 2 Normative references The following referenced documents are in
21、dispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 14229 Road vehicles - Diagnostic systems - Diagnostic services specifications ISO 1423
22、0-1 Keyword Protocol 2000 Part 1: Physical layer ISO 14230-2 Keyword Protocol 2000 Part 2: Data link layer ISO 14230-3 Keyword Protocol 2000 Part 3: Application layer 3 Definitions For the purposes of this document, the following terms and definitions apply. 3.1 vehicle charging control unit (VCCU)
23、system embedded in the electric vehicle able to command and control the charging parameters of the off-board charger 3.2 charging parameters parameters including set points needed by the off-board charger to generate a current adapted to the vehicle battery 3.3 charging values values measured during
24、 charging process CLC/TS 50457-2:2008 5 4 Off-board charging system 4.1 General overview Electric vehicles will be equipped with different technologies, voltage and charging current batteries. In order to avoid any error during charging and to guarantee that the off-board charger will be able to cha
25、rge all existing and future batteries, the charge shall be managed by the vehicle. Any vehicle to be connected to a general purpose off-board charging system must include a charging control unit able to manage the charging process. 4.2 Charging process The off-board charger shall be able to supply c
26、ontrolled DC voltage and/or current to the vehicle battery. The charging values current and voltage shall be measured at least by the off-board charger. If the vehicle charging control unit also makes this measurement, a full redundancy system could be established to achieve a high safety charging s
27、ystem. The charging parameters shall be established by the vehicle charging control unit and sent to off-board charger in order to be used as set points. The charging measured values will be sent by the off-board charger to the vehicle charging control unit. 4.3 Safety process The start of the charg
28、ing process shall be allowed by both the off-board charger and the vehicle charging control unit. The charging process can be stopped at any time by the off-board charger or the vehicle charging control unit and shall be stopped in case of communication loss. 5 Communication interchange 5.1 Protocol
29、s basis The standard data interchange is based on ISO 14230. 5.2 Adaptation for off-board charging application The scope of ISO 14230 concerns requirements for diagnostic systems implemented on a serial data link layer, which allows a tester to control diagnostic functions in and on vehicle electron
30、ic control unit. The same protocol is used for the communication between an electric vehicle and an off-board charger for the charging procedure. After the initialization phase by the OBC, the VCCU shall control the charging process of the OBC. Contrarily to communication according to ISO 14230 wher
31、e the server and the client are fixed during all the session, the roles are definitively reversed after the initialization phase. 5.3 Initialization header values Initialization header values are those defined in ISO 14230-2 except for those specified hereafter. CLC/TS 50457-2:2008 6 5.3.1 Initializ
32、ation mode The initialization mode is 5 bauds only. 5.3.2 Address The address sent to open the communication to the vehicle charging control unit shall be 66 h (functional address). NOTE 66 h is the value 66 in hexadecimal code. 5.3.3 Key bytes The key bytes are defined in accordance with ISO 14230-
33、2 with for KB1: AL0 = 1 AL1 = 0 HB0 = 1 HB1 = 0 TP0 = 1 TP1 = 0 That is to say the following two key bytes: KB2 KB1 Hexadecimal code Decimal code 10001111 11010101 8FD5 2005 KB2 is the most significative key byte. The key bytes will define the state of the protocol; any change in the protocols for f
34、uture use will change the key bytes. 5.4 Message structure 5.4.1 Message length The maximum length for charging application shall be 16 bytes (included header and check-sums). 5.4.2 Message header values The message header values shall be changed and defined as follows: number of header bytes: 1 as
35、defined in 8.1.2. CLC/TS 50457-2:2008 7 6 Service definition 6.1 Basis The services definition is based upon the draft of ISO 14229 with the following main differences: diagnostic is hereby replaced by data interchange; client (tester) is replaced by the vehicle charging control unit (VCCU); server
36、(ECU) is replaced by the off-board charger (OBC); as there is only one server, no server identifier parameter shall be provided. 6.2 List of services used Table 1 List of services used Services of ISO 14229 used for this application Generic services (client) Generic services (server) Diagnostic mana
37、gement TesterPresent TestDevicePresent StopDiagnosticSession StopSession Specific code StopSessionRequest Data transmission ReadDataByLocalIdentifier ChargerCharacteristics ChargerIdentification ReadDataByLocalIdentifier VehicleIdentification Stored data transmission ReadDiagnosticTrouble Codes Read
38、DiagnosticTrouble Codes Input/Output Control InputOutputControlByLocalIdentifier SetSafetyLimits SetpointAdjust DisplayMessage StartCharging StopCharging 6.3 Message interchange rules After initialization, at any time the server is waiting for a request. Any request sent by the client must be acknow
39、ledged by the server. The server has the possibility to stop the session by using the generic StopSessionRequest answer. 7 Communication session In this clause the generic messages to be sent are written in italics. CLC/TS 50457-2:2008 8 7.1 Phases The communication sequence uses 7 main steps: a) co
40、mmunication opening; b) charger identification; c) vehicle identification; d) starting charging process; e) charging process; f) ending charging process; g) closing communication. The use of services, for each step, is detailed hereafter. Table 2 Use of services Communi-cation Opening (a) Chargeride
41、ntifi-cation (b) Vehicleidentifi-cation (c) Safety limits (d1) Starting charging process (d2) Charging process (e) Stopping charging process (f) End of commu-nication (g) ChargerCharacteristics M (b) A F F F F F F ChargerIdentification F A F F F F F F VehicleIdentification F M (c) A F F F F F ReadDi
42、agnosticTroubleCodes F A A A A A A F DisplayMessage F A A A A A A F SetSafetyLimits F F M (d1) A F F F F StartCharging F F F M (d2) A A A (d2) F SetpointAdjust F F F F M (e) A F F StopCharging F F F F F A (f) A F StopSession A (g) A (g) A (g) A (g) A (g) A (g) A (g) F StopSessionRequest A A A A A A
43、A F TestDevicePresent A A A A A A A F A = Allowed, A(x) = Allowed, go to step (x), F = Forbidden, M(x) = Mandatory, go to step (x). CLC/TS 50457-2:2008 9 7.2 Basic session sequence 7.2.1 Communication opening The off-board charger starts the initialization sequence as defined in ISO 14230-2. Directi
44、on OBC-VCCU VCCU-OBC OBC-VCCU VCCU-OBC Content 66h 55h KB1 KB2 70h 99h Speed 5 Bd 10,4 kBd At the end of the initialization sequence, the VCCU becomes the master and shall manage all the other sequences by sending appropriate requests to the OBC. 7.2.2 Charger identification ChargerCharacteristics T
45、his request is used to inform the VCCU of the major characteristics of the OBC ChargerIdentification. This request is used to identify the OBC (for instance: OBC manufacturer, OBC owner, OBC version.) 7.2.3 Vehicle identification VehicleIdentification This service intends to identify the vehicle. It
46、 can be used for instance to provide the charger with an access control facility, it can identify the version of the communication protocol. In case of an unauthorised vehicle, the OBC shall answer to the request with a StopSessionRequest message. Any further request request in this session shall ge
47、t the same answer. 7.2.4 Starting charging process SetSafetyLimits The OBC shall not be allowed to supply any power before receiving this request. StartCharging From receiving this request, the OBC current setpoint is reset to zero and the OBC shall be ready to supply power to the battery. 7.2.5 Cha
48、rging process SetpointAdjust request sent by the VCCU. At any time the VCCU can temporarily disconnect the power by using a StopCharging request. The charging process will then be resumed using a StartCharging request. CLC/TS 50457-2:2008 10 7.2.6 Ending charging process This can occur in two differ
49、ent ways: from VCCU (normal end of process), the VCCU shall send a StopSession request; from OBC (for safety reasons or elapsed credit time for instance), any request other than StopSession shall get the StopSessionRequest answer. 7.2.7 End of communication After echoing a StopSession request, the OBC will remain idle till a next initialization. 7.3 Other functions TestDevicePresent can be used at any time to avoid time-out. ReadDiagnosticTroubleCodes This service allows the VCCU to inform the OBC about defective s
