JB/T 11137-2011 English PDF (JBT11137-2011)

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JB/T 11137-2011: General requirement of lithium-ion battery assembly
JB/T 11137-2011
JB
MACHINERY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.220
K 81
Filing No.:
General requirement of lithium-ion battery assembly
ISSUED ON: MAY 18, 2011
IMPLEMENTED ON: AUGUST 01, 2011
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Classification and model ... 8
4.1 Classification ... 8
4.2 Model ... 9
4.3 Composition of lithium-ion battery assembly ... 11
5 Technical requirements ... 11
5.1 Appearance ... 11
5.2 Technical requirements ... 11
5.3 Safety requirements ... 21
5.4 Environmental requirements ... 23
5.5 Electromagnetic compatibility (EMC) ... 25
6 Test method ... 27
6.1 Test conditions ... 27
6.2 Appearance ... 28
6.3 Consistency test of lithium-ion battery ... 28
6.4 Interface and communication protocol test ... 28
6.5 Electric energy (kW·h) test ... 33
6.6 Service life test ... 34
6.7 Peak power consumption ... 35
6.8 Insulation resistance test ... 36
6.9 Electromagnetic compatibility test ... 38
7 Inspection... 39
7.1 Classification of inspections ... 39
7.2 Exit-factory inspection ... 39
7.3 Type test ... 40
7.4 Inspection rules ... 40
8 Marking, packaging, transportation and storage ... 41
8.1 Marking ... 41
8.2 Packaging ... 42
8.3 Transportation ... 43
8.4 Storage ... 43
Appendix A (Normative) Function configuration of lithium-ion battery
management system ... 44
A.1 Function configuration... 44
A.2 Technical requirements ... 45
A.3 Charge control circuit ... 46
A.4 Discharge control circuit ... 46
A.5 I/O circuit ... 46
A.6 Voltage monitoring circuit of battery cell ... 46
A.7 Automatic balanced circuit ... 46
Appendix B (Normative) Composition of lithium-ion battery assembly ... 47
B.1 Overview ... 47
B.2 Composition of standard and balanced battery assembly ... 47
B.3 Composition of basic lithium-ion battery assembly ... 49
B.4 Composition of I/O type lithium-ion battery assembly ... 49
B.5 Lithium-ion battery module... 50
B.6 Lithium-ion battery assembly controller (BECU) ... 50
Appendix C (Normative) Discharge control mode of lithium-ion battery module
and assembly ... 52
C.1 Overview ... 52
C.2 Discharge control method of proportional multiplier ... 52
C.3 Digital control discharge method ... 53
C.4 I/O discharge control method ... 53
Appendix D (Informative) Consistency test method of lithium-ion battery ... 54
D.1 Overview ... 54
D.2 Consistency Index (C) ... 54
D.3 Consistency test method ... 56
General requirement of lithium-ion battery assembly
1 Scope
This standard specifies the terms and definitions, classification and model,
requirements, test methods, inspection, marking, packaging, transportation and
storage of lithium-ion battery assemblies.
This standard applies to systems, which are composed of lithium-ion batteries
with a capacity greater than or equal to 6 A·h.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 156-2007 Standard voltage
GB 2893-2008 safety colors
GB 2894-2008 Safety signs and guideline for the use
GB 4208-2008 Degrees of protection provided by enclosure (IP code)
GB 4824-2004 Industrial, scientific and medical (ISM) radio-frequency
equipment - Electromagnetic disturbance characteristics - Limits and
methods of measurement
GB/T 5465.2-2008 Graphical symbols for use on electrical equipment - Part
2: Graphical symbols
GB/T 17626.2-2006 Electromagnetic compatibility (EMC) - Testing and
measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3-2006 Electromagnetic compatibility - Testing and
measurement techniques - Radiated radio-frequency electromagnetic field
immunity test
GB/T 17626.4-2008 Electromagnetic compatibility - Testing and
measurement techniques - Electrical fast transient/burst immunity test
of the positive and negative potential pairs.
3.3
Lithium-ion battery pack
A combination of several lithium-ion battery cells, which are connected by a
circuit, in a single mechanical-electrical unit.
3.4
Lithium-ion battery module
A combination of lithium-ion battery packs and circuit modules (monitoring
and protection circuits, connection circuits, communication interfaces,
thermal management equipment, etc.), which is placed in a mechanical-
electrical unit.
3.5
Lithium-ion battery assembly
A power supply system which, composed of one or several lithium-ion
battery modules, circuit equipment (protection circuit, lithium-ion battery
management system, circuit and communication interface), etc., is used to
provide electrical energy to electrical equipment.
3.6
Lithium-ion battery assembly controller
A short-circuit unit which, composed of circuits and circuit interfaces and
communication interfaces which are controlled by an embedded
microcontroller, is used for battery assembly data processing, charge
management, discharge management, provision of relevant data for user
equipment. It is shortly referred to as battery assembly controller (BECU).
3.7
Voltage monitoring circuit unit for battery cell
A unit, which is connected with each battery cell, for continuous monitoring
of the highest and lowest operating voltage of the battery cell.
3.8
Electric energy
The amount of electric energy provided by the lithium-ion battery, when it is
Example: Lithium-ion battery assembly, which has a model number of FEB 12.5-
144/3-50/9-4009, represents that:
- FEB: Standard configuration (B) energy type (E) lithium iron phosphate (F) battery
assembly;
- 12.5: The electric energy is 12.5 kW·h;
- 144/3: Consists of 3 battery modules with a nominal voltage of 48 V; the nominal
voltage of the battery pack is 144 V;
- 50/9: The rated discharge current is 50 A; the maximum discharge current is 450
A (50 A x 9);
- 4009: The battery module adopts a standard battery module box, which has a type
code of 4009.
4.2.1 Type code
The type code of the lithium-ion battery assembly consists of three characters:
The first character (A): Battery module type, see 4.1.1;
The second character (B): Battery type, see 4.1.2;
The third character (C): Function configuration of battery management system
(BMS), see 4.1.3.
4.2.2 Electric energy
The electric energy is represented by three effective Arabic numerals, in the
unit of kilowatt·hour (kW·h).
When the electric energy is less than 10 kW·h, it retains 2 decimal places, such
as 9.85 kW·h;
When the electric energy is greater than or equal to 10 kW·h but less than 100
kW·h, it retains one decimal place, such as 13.7 kW·h;
When the electric energy is greater than or equal to 100 kW·h, it is represented
by a 3-digit integer, such as 143 kW·h.
4.2.3 Nominal voltage/number of modules
The nominal voltage (U) of the battery modules, that make up the lithium-ion
battery assembly, in the unit of V.
The number of battery modules that make up the lithium-ion battery assembly
(N).
a) Circuit interface and interface protocol:
1) Charge control guide interface and in...