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GB/T 40559-2021 (GBT 40559-2021)

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GB/T 40559-2021English460 Add to Cart 0--3 minutes. Auto immediate delivery. Lithium ion cells and batteries used in self-balancing vehicle -- Safety requirements GB/T 40559-2021 Valid GBT 40559-2021


   
BASIC DATA
Standard ID GB/T 40559-2021 (GB/T40559-2021)
Description (Translated English) Lithium ion cells and batteries used in self-balancing vehicle -- Safety requirements
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K82
Classification of International Standard 29.220.99
Word Count Estimation 27,246
Date of Issue 2021-10-11
Date of Implementation 2022-05-01
Drafting Organization Shenzhen Saixi Information Technology Co., Ltd., Hangzhou Qike Intelligent Technology Co., Ltd., Ningde New Energy Technology Co., Ltd., Xinwangda Electronics Co., Ltd., Ninebot (Beijing) Technology Co., Ltd., Shandong Jinggong Electronic Technology Co., Ltd., Zhejiang Kai En Battery Co., Ltd., Shanghai Delangneng Power Battery Co., Ltd., Dongguan Xinnengde Technology Co., Ltd., Shenzhen Litai New Energy Co., Ltd., Beijing Machinery Industry Automation Research Institute Co., Ltd., Beijing Jianxing Tianxia Environmental Protection Technology Co., Ltd., China Electronics Technical Standardization Institute
Administrative Organization Ministry of Industry and Information Technology (Electronics)
Proposing organization Ministry of Industry and Information Technology of the People's Republic of China
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration


GB/T 40559-2021: PDF in English (GBT 40559-2021)
GB/T 40559-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.220.99
K 82
Lithium ion cells and batteries used in self-balancing
vehicle - Safety requirements
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: MAY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 Test conditions ... 13 
4.1 Applicability of the test ... 13 
4.2 Environmental conditions for the test ... 14 
4.3 Parameter measurement tolerance ... 14 
4.4 Temperature measurement method ... 14 
4.5 Charging and discharging procedures for the test ... 14 
4.6 Type test ... 15 
5 General safety requirements ... 18 
5.1 General safety considerations ... 18 
5.2 Safe working parameters ... 18 
5.3 Identification and warning instructions ... 19 
6 Cell electrical safety test ... 20 
6.1 High temperature external short circuit ... 20 
6.2 Overcharge ... 20 
6.3 Forced discharge... 21 
7 Cell environmental safety test ... 22 
7.1 Low air pressure ... 22 
7.2 Temperature cycle ... 22 
7.3 Vibration ... 23 
7.4 Acceleration impact ... 23 
7.5 Drop ... 24 
7.6 Heavy impact/squeeze ... 24 
7.7 Hot abuse ... 25 
7.8 Combustion injection ... 25 
8 Battery system environmental safety test ... 26 
8.1 Low air pressure ... 26 
8.2 Temperature cycle ... 26 
8.3 Vibration ... 26 
8.4 Acceleration impact ... 27 
8.5 Drop ... 27 
8.6 Stress relief ... 28 
8.7 High temperature use ... 28 
8.8 Salt fog ... 29 
8.9 Immersion ... 29 
8.10 Flame retardant ... 29 
9 Functional electrical safety test of battery system ... 30 
9.1 Basic requirements for battery management system ... 30 
9.2 Overvoltage charging ... 30 
9.3 Single battery overvoltage control ... 31 
9.4 Undervoltage discharge ... 31 
9.5 Overcurrent charging... 32 
9.6 Overload ... 32 
9.7 External short circuit ... 32 
9.8 Reverse charging ... 32 
10 Safety-critical components ... 33 
10.1 Basic requirements... 33 
10.2 Evaluation and testing of components ... 33 
11 Safety requirements for high-voltage batteries ... 34 
Appendix A (Normative) Test sequence ... 35 
Appendix B (Normative) Test equipment and measuring instruments ... 36 
Appendix C (Normative) Wire flame resistance test method ... 38 
References ... 40 
Lithium ion cells and batteries used in self-balancing
vehicle - Safety requirements
1 Scope
This Standard specifies the safety requirements for lithium ion cells and
batteries used in self-balancing vehicle, and describes the corresponding test
methods.
This Standard applies to lithium ion cells and batteries used in self-balancing
vehicle, as well as lithium ion cells and batteries for similar products such as
electric scooters without self-balancing function.
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 2423.5, Environmental testing - Part 2: Test methods - Test Ea and
guidance: Shock
GB/T 2423.10, Environmental testing - Part 2: Test methods - Test Fc:
Vibration (sinusoidal)
GB/T 2423.21, Environmental testing - Part 2: Test methods - Test M: Low
air pressure
GB/T 2423.22, Environmental testing - Part 2: Tests methods - Test N:
Change of temperature
GB 4943.1-2011, Information technology equipment -Safety - Part 1: General
requirements
GB/T 5169.5-2008, Fire hazard testing for electric and electronic products -
Part 5: Test flames - Needle test method - Apparatus confirmatory
arrangement and guidance
GB/T 5330-2003, Industrial woven metal wire cloth (square opening series)
GB/T 6005-2008, Test sieves - Metal wire cloth perforated metal plate and
electroformed sheet - Nominal sizes of openings
to constant voltage charging until the charging current is less than or equal
to 0.02It; then, stop charging. The longest charging time shall not exceed
8 hours.
b) Charge at 1It at an ambient temperature of 20 °C ± 5 °C. When the cell or
battery terminal voltage reaches the limited charging voltage, change to
constant voltage charging until the charging current is less than or equal
to 0.02It. The longest charging time shall not exceed 4 hours.
When there is disagreement with the capacity test result, the test can be re-
performed at the ambient temperature of 23 °C ± 2 °C, which is used as the
arbitration condition.
Note: It represents the reference test current; its value is the same as the rated
capacity (C), and the unit is ampere (A) or milliampere (mA).
4.5.2 Discharging procedure for the test
The cell or battery is discharged to the end of discharge voltage at a constant
current according to the current specified by the manufacturer.
4.6 Type test
4.6.1 Overview
Unless otherwise specified, the tests specified in this Standard are type tests.
Unless otherwise specified, the tests are only carried out on products which are
produced within one year.
4.6.2 Requirements for samples
Unless otherwise specified, the tested samples shall be representative samples
of the products which are going to be accepted by the customer, including a
small batch of trial production samples or products that are ready to delivered
to the customer.
If the test requires the introduction of wire load test or connection, unless
otherwise specified, the total resistance generated by the introduction of wire
test or connection shall be less than 20 mΩ.
4.6.3 Pretreatment of samples
The cell or battery is subjected to two charge-discharge cycles in accordance
with the charge-discharge procedures specified in 4.5; it is left for 5 minutes
between the charge-discharge cycles.
The identification and warning instructions on the battery body shall be clear
and legible.
Any identifications and warning instructions on the battery body, which are
required by this Standard, shall be durable and eye-catching. When considering
its durability, the effect of normal use shall be taken into consideration.
Check and wipe the identification and warning instruction, to verify whether it is
qualified. When wiping the identifications and warning instructions, use a cotton
cloth that is dipped in water to wipe it by hand for 15 seconds; then, use a cotton
cloth that is dipped in 75% medical alcohol to wipe it by hand for 15 seconds.
After the test, the identifications and warning instructions shall still be clear; the
nameplate shall not be easily removed, and there shall be no curling.
6 Cell electrical safety test
6.1 High temperature external short circuit
After fully charging the cell in accordance with the test method that is specified
in 4.5.1, place it in an environment of 57 °C ± 4 °C; after the cell temperature
reaches 57 °C ± 4 °C, place it for another 30 minutes. Then, use wires to
connect the positive and negative terminals of the cell; ensure that all external
resistances are not higher than 20 mΩ. During the test, monitor the cell
temperature change. In any of the following conditions, terminate the test:
a) The cell temperature drop reaches 20% of the peak temperature rise;
b) The short-circuit time reaches 24 hours.
The cell shall not have fire or explosion.
Note: The resistivity temperature coefficient of the wire is less than 5×10-3°C-1,
such as constantan wire.
6.2 Overcharge
After discharging the cell according to the test method that is specified in 4.5.2,
use the maximum continuous charging current, which is specified by the
manufacturer, to charge it to 4.8 V or a higher value specified by the
manufacturer at room temperature.
During the test, monitor the cell temperature change. In any of the following
conditions, terminate the test:
a) After reaching 4.8 V or the highest charging voltage, the cell's continuous
charging time reaches 1 hour;
Cylindrical cells are subjected to 12 impact tests, in total, in the positive and
negative directions of their axial and radial installation positions; square and
soft-package cells are subjected to 18 impact tests, in sequence, according to
three mutually perpendicular installation positions in the positive and negative
directions.
The specific test method can be in accordance with the relevant clauses in GB/T
2423.5.
The cell shall not have fire, explosion or leakage.
7.5 Drop
After fully charging the cell in accordance with the test method that is specified
in 4.5.1, drop it freely on the concrete slab at a drop height of 1 m ± 0.01 m.
Drop each of the two end faces of the cylindrical cell once, and the cylindrical
surface twice, counting up to a total of four drop tests; drop each face of the
square and soft-package cell once, counting......