GB/T 36972-2018 PDF English
US$290.00 · In stock · Download in 9 secondsGB/T 36972-2018: Lithium-ion battery for electric bicycle Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 36972-2018 | English | 290 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Lithium-ion battery for electric bicycle
| Valid |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 36972-2018
GB/T 36972-2018: Lithium-ion battery for electric bicycle---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT36972-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.140
Y 14
Lithium-ion battery for electric bicycle
Issued on. DECEMBER 28, 2018
Implemented on. JULY 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Symbols and type designation... 5
5 Requirements... 5
6 Test methods... 9
7 Inspection rules... 18
8 Marking, packaging, transportation and storage... 22
1 Scope
This Standard specifies the terms and definitions, symbols and type designation,
requirements, test methods, inspection rules, as well as marking, packaging,
transportation and storage of lithium-ion battery for electric bicycle.
This Standard applies to lithium-ion battery pack for electric bicycle (hereinafter
referred to as battery pack).
2 Normative references
The following referenced documents are indispensable 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.
GB/T 191, Packaging - Pictorial marking for handling of goods
GB/T 2828.1-2012, Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2829-2002, Sampling procedures and tables for periodic inspection by
attributes (apply to inspection of process stability)
GB/T 5169.16-2017, Fire hazard testing for electric and electronic products - Part
16.Test flames - 50 W horizontal and vertical flame test methods
GB/T 17626.2-2006, Electromagnetic compatibility - Testing and measurement
techniques - Electrostatic discharge immunity test
GB/T 36945-2018, Vocabulary of lithium-ion batteries for electric bicycle
GB/T 36943-2018, Designation and marking requirements of lithium-ion batteries
for electric bicycle
QB/T 4428, Specification and dimension of Lithium-ion batteries for electric bicycle
3 Terms and definitions
Terms and definitions determined by GB/T 36945-2018, and the following ones are
applicable to this document. For ease of use, some of the terms and definitions in GB/T
36945-2018 are repeated below.
4 Symbols and type designation
4.1 Symbols
The following symbols apply to this document.
C2.2 hour rate rated capacity (Ah);
Ca. initial capacity, whose value is equal to the average (Ah) of three I2 (A) discharge
test results;
5 Requirements
5.1 General
The electrical performance of battery pack shall meet the requirements for driving on
public roads, and the safety performance of battery pack shall ensure the safety of users
during riding, charging and storing.
5.2 Requirements for electrical performance
5.2.1 I2 (A) discharge
Carry out the I2 (A) discharge test according to the method specified in 6.2.1, where the
discharge capacity of the battery pack shall reach the rated capacity on or before the
third discharge.
5.2.4 High temperature discharge
After the high-temperature discharge test is carried out according to the method
specified in 6.2.4, the discharge capacity of the battery pack shall not be lower than 90%
of the initial capacity.
5.2.5 Charge retention capability and charge recovery capability
After the charge retention capability and charge recovery capability test is carried out
according to the method specified in 6.2.5, the charge retention capability of the battery
pack shall not be lower than 80% of the initial capacity, and the charge recovery
capability shall not be lower than 90% of the initial capacity.
5.2.6 Charge recovery capability after long-term storage
After the charge recovery capability after long-term storage is tested according to the
method specified in 6.2.6, the discharge capacity of the battery pack shall not be lower
than 85% of the initial capacity.
5.3 Safety requirements
5.3.1 General
The safety requirements of the battery pack simulate the safety and reliability
requirements of the battery pack in the cases of overcharge, over discharge and external
short circuit when its electrical protective device fails, and simulate the safety and
reliability requirements of the battery pack under unforeseeable mechanical accidents.
5.3.5 Squeeze
When the squeeze test is carried out according to the method specified in 6.3.5, the
battery pack shall not catch fire or explode.
5.3.6 Mechanical impact
When the mechanical impact test is carried out according to the method specified in
6.3.6, the battery pack shall not catch fire, explode or leak.
5.3.7 Vibration
When the vibration test is carried out according to the method specified in 6.3.7, the
battery pack shall not leak, catch fire or explode, and the discharge capacity shall not
be lower than 95% of the initial capacity.
5.3.11 Soaking
After the soaking test is carried out according to the method specified in 6.3.11, the
battery pack shall not leak, rupture, catch fire or explode.
5.4 Requirements for protection capability
5.4.1 General
The battery pack shall have the protection capability under abnormal working or
abnormal use conditions.
5.4.2 Overcharge protection
When the overcharge protection test is carried out according to the method specified in
6.4.2, the battery pack shall work normally without leakage, fire or explosion.
5.4.5 Discharge overcurrent protection
When the discharge overcurrent protection test is carried out according to the method
specified in 6.4.5, the battery pack shall not leak, catch fire or explode; after recovery,
the battery pack shall work normally.
5.4.6 Electrostatic discharge
After the electrostatic discharge test is carried out according to the method specified in
6.4.6, the battery pack shall work normally.
5.5 Safety requirements for combination shell
5.5.1 Molded shell stress
After the molded shell stress test is carried out according to the method specified in
6.5.1, the battery pack shell shall have no physical deformation that exposes the internal
components.
5.6 Other requirements
5.6.1 External dimensions
The external dimensions of the battery pack shall meet the requirements of QB/T 4428.
5.6.2 Charge-discharge interface
The charge-discharge interface of the battery pack shall meet the requirements of QB/T
4428.
6 Test methods
6.1 Test conditions
6.1.1 Environmental requirements
Unless otherwise specified, the test shall be carried out in the following environment.
6.1.2 Requirements for measuring instruments and equipment
The accuracy of measuring instruments and equipment shall meet the following
requirements.
6.2 Electrical performance test
6.2.1 I2 (A) discharge
6.2.1.2 Discharge
In an environment with a temperature of 23 °C ± 2 °C, leave the battery pack – which
has been charged according to the method specified in 6.2.1.1 – for 0.5 h ~ 1 h; then,
discharge to the cut-off voltage at a constant current of I2 (A); record the discharge time;
calculate the discharge capacity. Repeat the above test 3 times; calculate the average
value of the 3 test results as the initial capacity Ca.
6.2.3 Low temperature discharge
In an environment with a temperature of 23 °C ± 2 °C, after the battery pack is charged
according to the method specified in 6.2.1.1, place it in a low-temperature box with a
temperature of -20 °C ± 2 °C for 16 hours at a constant temperature; then, in this
temperature environment, discharge at a constant current of 2I2 (A) to the cut-off
voltage; record the discharge time; calculate the discharge capacity.
6.2.6 Charge recovery capability after long-term storage
Select the battery pack whose production date is within 90 days; in an environment with
a temperature of 23 °C ± 2 °C, after charging according to the method specified in
6.2.8 Internal resistance
The internal resistance of the battery pack is generally tested by the AC method.
Before the test, in an environment with a temperature of 23 °C ± 2 °C, the battery pack
shall be discharged at a constant current of I2 (A) to the cut-off voltage. After the battery
pack is charged according to the method specified in 6.2.1.1, place it in an environment
with a temperature of 20 °C ± 5 °C for 1 h ~ 4 h; t
6.3 Safety test
6.3.1 Test requirements
The safety test shall be carried out in an environment with forced ventilation and
explosion-proof measures. During the tests of 6.3.2, 6.3.3, and 6.3.4, the battery pack
shall have its protective device removed. Before the safety test, all battery packs shall
be charged according to the method specified in 6.2.1.1, and shall be left for 0.5 h ~ 1
h after charging, and tested within 24 h.
6.4.6 Electrostatic discharge
Test the battery pack according to the requirements for electronic discharge in GB/T
17626.2-2006.Carry out the contact discharge test on the battery pack at 4 kV, and carry
out the air discharge test on the battery pack at 8 kV. After the electrostatic discharge is
over, check whether the protective device is working normally.
6.5 Combination shell safety test
6.5.1 Molded shell stress
After charging the battery pack according to the method specified in 6.2.1.1, place it in
an incubator at 70 °C ± 2 °C for 7 hours; then, take out the battery pack and return it to
room temperature; visually inspect the appearance of the battery pack.
6.6 Other requirements.
6.6.1 External dimensions
Use a length ruler and a vernier caliper to measure the external dimensions and
installation dimensions of the battery pack.
6.6.2 Charge-discharge interface
Visually check whether the charge-discharge interface of the battery pack complies with
the interface specified in QB/T 4428.
7 Inspection rules
7.1 General
Products shall pass the inspection of the quality inspection department of the
manufacturer and be accompanied by a certificate of conformity before leaving the
factory.
7.2 Exit-factory inspection
7.2.1 Inspection basis
The factory inspection is in accordance with the provisions of GB/T 2828.1-2012, and
samples are taken from the finished products of the continuous series of batches to be
inspected batch by batch.
7.2.4 Sampling plan
Adopt the single sampling plan. Normal inspection shall be used at the beginning of the
inspection. See Table 2 for inspection items, inspection level (IL), non-conformity
classification, and acceptance quality limit (AQL).
7.2.5 Others
When the inspection batch is used for delivery acceptance by both the supplier and the
buyer, the requirements specified in 8.2 can be stipulated separately in the contract.
7.3 Periodic inspection
7.3.1 Inspection basis
The periodical inspection is in accordance with the provisions of GB/T 2829-2002, and
samples are taken from a certain batch or several batches that have passed the batch-
by-batch inspection for inspection.
7.3.5 Sampling plan
Adopt the single sampling plan. See Table 3 for specific contents such as inspection
items, discriminant level (DL), non-conformity classification, rejectable quality level
(RQL), sample size (n), and judgment array.
7.4 Type inspection
7.4.1 Inspection rules
In any of the following cases, type inspection shall be carried out.
8 Marking, packaging, transportation and storage
8.1 Marking
8.1.1 Battery pack marking.
The traceable characteristic symbols shall be clearly and permanently marked on the
eye-catching parts of the product, and the battery pack shall have the following
markings.
8.1.2 Outer package marking.
The outer packaging of the product shall have the following markings.
8.1.3 In the contract environment, it can be marked according to the requirements of
the buyer.
8.2 Packaging
8.2.1 The ex-factory products shall be accompanied by the product certificate, packing
list, and product description materials.
8.3 Transportation
Packing boxes containing products shall be loaded, unloaded and transported in
accordance with the provisions of GB/T 191.During transportation, it shall be handled
with care and shall not be thrown. During transportation, it shall be protected from
severe vibration, impact or extrusion, and shall not be exposed to the sun or rain. It is
strictly forbidden to mix and transport with flammable materials and active chemicals.
8.4 Storage
8.4.1 The product shall be stored in a clean, dry and ventilated room – with an ambient
temperature of -5 °C ~ 35 °C and a relative humidity not greater than 75% – that can
prevent rain and snow, and shall not be stored together with corrosive substances such
as acids and alkalis or dust-generating items.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 36972-2018 be delivered?Answer: The full copy PDF of English version of GB/T 36972-2018 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 36972-2018_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 36972-2018_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 36972-2018 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. How to buy and download a true PDF of English version of GB/T 36972-2018?A step-by-step guide to download PDF of GB/T 36972-2018_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 36972-2018".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|