Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This document is drafted in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document is modified in relation to IEC 62928:2017 Railway applications - Rolling stock - Onboard lithium-ion traction batteries.
The following structural adjustments have been made with respect to IEC 62928:2017:
——Clause 4 corresponds to IEC 62928:2017, 3.2;
——Clause 5 corresponds to IEC 62928:2017, Clause 4, with subsequent clauses and subclauses adjusted accordingly in sequence;
——Annex B corresponds to IEC 62928:2017, Annex A;
——Annex D corresponds to IEC 62928:2017, Annex B.
There are many technical differences between this document and IEC 62928:2017, which are marked with perpendicular single line (|) in the outside page margin of the provisions concerned. See Annex A for the technical differences and their justifications.
The following editorial changes have been made in this document:
——Notes have been added under "Designations for cells and battery system" and "System sizing" (see 8.2 and 13.1.2 hereof);
——The "notes" in IEC 62928:2017, 6.2 and 13.3, have been deleted (see 7.2 and 14.3 hereof);
——Annex A (informative) "Technical differences and their justifications" has been added.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by the National Railway Administration of People's Republic of China.
This document is under the jurisdiction of SAC/TC 278 National Technical Committee on Electrical Equipment and Systems for Railways of Standardization Administration of China.
Railway applications - Rolling stock -
Onboard lithium-ion traction batteries
1 Scope
This document specifies the design, operation parameters, safety requirements, data exchange, end-of-manufacturing inspection and type inspection, as well as designation and marking of onboard lithium-ion traction batteries for railway rolling stock, and describes the corresponding test methods.
This document applies to onboard lithium-ion traction batteries for railway rolling stock.
Battery systems described in this document refer to the energy storage systems (ESSs) that serve as the traction power of railway rolling stock such as hybrid vehicles as defined in IEC 62864-1:2016. Lithium-ion batteries used in auxiliary power supplies are excluded.
Subcomponents within the battery systems, e.g. battery management system (BMS) and battery thermal management system (BTMS), are also covered in this document.
Power conversion equipment (e.g. chopper, converter, etc.), inductors, capacitors and switchgear are excluded from the scope of this document.
General requirements for onboard ESS are described in IEC 62864-1:2016.
This document specifies the lithium-ion battery technology but does not prevent the use of battery technologies other than lithium-ion technology for application as traction batteries.
A hybrid energy storage system, which uses two or more energy storage technologies combined, e.g. a traction battery and double layer capacitors, is not covered in this document. However, if different technologies of energy storage systems are used on the same train and managed independently, each independent energy storage system is covered by its own standard.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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.
GB/T 2900.36 Electrotechnical terminology - Electric traction (GB/T 2900.36-2021, IEC 60050-811:2017, IDT)
GB/T 2900.41-2008 Electrotechnical terminology - Primary and secondary cells and batteries (IEC 60050-482:2004, IDT)
GB/T 4208 Degrees of protection provided by enclosure (IP code) (GB/T 4208-2017, IEC 60529:2013, IDT)
GB/T 21413.1 Railway applications - Electric equipment for rolling stock - Part 1: General service conditions and general rules (GB/T 21413.1-2018, IEC 60077-1:2017, MOD)
GB/T 21413.5 Railway applications - Electric equipment for rolling stock - Part 5: Electrotechnical components - Rules for HV fuses (GB/T 21413.5-2023, IEC 60077-5:2019, MOD)
GB/T 21414 Railway applications - Rolling stock - Protective provisions against electrical hazards (GB/T 21414-2021, IEC 61991:2019, MOD)
GB/T 21562 Railway applications - Specification and demonstration of reliability, availability, maintainability and safety (RAMS) (GB/T 21562-2008, IEC 62278:2002, IDT)
GB/T 21563-2018 Railway applications - Rolling stock equipment - Shock and vibration tests (IEC 61373:2010, MOD)
GB 21966 Safety of primary and secondary lithium cells and batteries during transport (GB 21966-2008, IEC 62281:2004, IDT)
GB/T 24338.4 Railway applications - Electromagnetic compatibility - Part 3-2: Rolling stock - Apparatus (GB/T 24338.4-2018, IEC 62236-3-2:2008, MOD)
GB/T 25119 Railway applications - Electronic equipment used on rolling stock (GB/T 25119-2021, IEC 60571:2018, MOD)
GB/T 28808 Railway applications - Communication, signaling and processing systems - Software for railway control and protection systems (GB/T 28808-2021, IEC 62279:2015, MOD)
GB/T 31486-2015 Electrical performance requirements and test methods for traction battery of electric vehicle
GB/T 31523.1-2015 Safety information identification systems - Part 1: Signs (ISO 7010:2011, MOD)
Note: There is no technical difference between the referenced content from GB/T 31523.1-2015 and that from ISO 7010:2011.
GB/T 32347.1-2015 Railway applications - Environmental conditions for equipment - Part 1: Equipment on board rolling stock (IEC 62498-1:2010, MOD)
Note: There is no technical difference between the referenced content from GB/T 32347.1-2015 and that from IEC 62498-1:2010.
GB/T 32350.1 Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment (GB/T 32350.1-2015, IEC 62497-1:2010, MOD)
GB 38031 Electric vehicles traction battery safety requirements
GB/T 38661-2020 Technical specifications of battery management system for electric vehicles
ISO/IEC GUIDE 51 Safety aspects - Guidelines for their inclusion in standards
IEC 62619:2022 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Safety requirements for secondary lithium cells and batteries, for use in industrial applications
IEC 62620:2014 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Secondary lithium cells and batteries for use in industrial applications
IEC 62864-1:2016 Railway applications - Rolling stock - Power supply with onboard energy storage system - Part 1: Series hybrid system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.41-2008, GB/T 2900.36 and ISO/IEC GUIDE 51, as well as the following apply.
3.1
charge retention
capacity retention
ability of battery system to retain capacity on open circuit under specified conditions
[Source: GB/T 2900.41-2008, 482-03-35, modified]
3.2
self discharge
phenomenon by which a cell or battery system loses energy in other ways than by discharge into an external circuit
[Source: GB/T 2900.41-2008, 482-03-27, modified]
3.3
final voltage
end-of-discharge voltage
closed circuit voltage at which a discharge of a cell or battery system is terminated
[Source: IEC 62620:2014, 3.3, modified]
3.4
nominal voltage
suitable approximate value of voltage used to designate or identify the voltage of a cell or battery system
Note 1: The cell and/or battery system manufacturer may provide the nominal voltage.
Note 2: The nominal voltage of a battery system of n series connected cells is equal to n times the nominal voltage of a single cell.
[Source: IEC 62620:2014, 3.4, modified]
3.5
rated capacity
capacity value of a cell or battery system determined under specified conditions and declared by the manufacturer
Note: The rated capacity is the quantity of electricity Cn Ah (ampere-hours) declared by the manufacturer which a single cell or battery can deliver during a n-h period when charging, storing and discharging under the conditions specified in IEC 62620:2014, 6.3.1. n is 5 for an E, M and H discharge rate type battery.
[Source: GB/T 2900.41-2008, 482-03-15, modified]
3.6
state of charge
remaining capacity to be discharged, normally expressed as a percentage of full capacity
Note: Its expression is as defined in IEC 62864-1:2016, Annex A.
[Source: IEC 62864-1:2016, 3.1.13, modified]
3.7
cell
secondary lithium cell
secondary cell where electrical energy is derived from the insertion/extraction reactions of lithium-ions or oxidation/reduction reaction of lithium between the negative electrode and the positive electrode
Note: The cell typically has an electrolyte that consists of a lithium salt and organic solvent compound in liquid, gel or solid form and has a metal or a laminate film casing. It is not ready for use in an application because it is not yet fitted with its final housing, terminal arrangement and electronic control device.
[Source: IEC 62620:2014, 3.6]
3.8
cell block
group of cells connected together in parallel configuration without protective devices (e.g. fuse or PTC) and monitoring circuit
Note: It is not ready for use in an application because it is not fitted with its final housing, terminal arrangement and electronic control device.
[Source: IEC 62620:2014, 3.7]
3.9
battery pack/module
energy storage device, which is comprised of one or more cells electrically connected
Note 1: In this document a battery pack is same as a module.
Note 2: It incorporates a protective housing and is provided with terminals or other interconnection arrangement.
Note 3: It includes at least monitoring circuit, which provides information (e.g. cell voltage, temperature) to a battery system.
Note 4: It may include a protective device and control circuit.
[Source: IEC 62620:2014, 3.9, modified]
3.10
battery branch
group of battery packs/modules connected together either in a series and/or parallel configuration
Note 1: Electrical isolation is done by means of disconnecting devices, e.g. Contactors, switchgear, circuit breakers, etc.
Note 2: A battery branch may be contained in a single enclosure or multiple enclosures.
Note 3: A battery branch has the voltage equal to that of the battery system and is the smallest electrically isolatable subsystem.
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Construction of battery system
6 Parameter measurement errors
7 Service conditions
8 Designation and marking
9 Safety requirements
10 Dimensions
11 Electrical requirements
12 Mechanical requirements
13 Performance requirements
14 Storage and transportation conditions
15 Tests
Annex A (Informative) Technical differences between this document and IEC 62928:2017 and their justifications
Annex B (Informative) Examples of battery system configuration
Annex C (Normative) Documents accompanying the product
Annex D (Informative) Examples of parameter ranges for additional high power cycling tests
Bibliography
