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GB/T 8897.3-2021: Primary batteries - Part 3: Watch batteries
Status: Valid GB/T 8897.3: Evolution and historical versions
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| GB/T 8897.3-2021 | English | 409 |
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Primary batteries - Part 3: Watch batteries
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GB/T 8897.3-2021
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| GB/T 8897.3-2013 | English | RFQ |
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Primary batteries -- Part 3: Watch batteries
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GB/T 8897.3-2013
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| GB/T 8897.3-2006 | English | 839 |
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Primary batteries -- Part 3: Watch batteries
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GB/T 8897.3-2006
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Basic data | Standard ID | GB/T 8897.3-2021 (GB/T8897.3-2021) | | Description (Translated English) | Primary batteries - Part 3: Watch batteries | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K82 | | Word Count Estimation | 22,297 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 8897.3-2021: Primary batteries - Part 3: Watch batteries---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Primary battery Part 3.Watch battery)
ICS 29.220.10
K82
National Standards of People's Republic of China
Replace GB/T 8897.3-2013
Primary battery part 3.watch battery
(IEC 60086-3.2016, MOD)
Released on 2021-05-21
2021-11-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Dimensions and physical performance requirements 2
5 Electrical performance requirements 5
6 Sampling and quality assurance 6
7 Inspection method 6
8 Visual inspection and qualification conditions 14
Appendix A (Normative Appendix) Model Nomenclature 16
Appendix B (Normative Appendix) Inspection Rules 17
Reference 18
Foreword
GB/T 8897 "Primary Battery" is divided into 5 parts.
---Part 1.General Provisions;
---Part 2.Dimensions and electrical properties;
---Part 3.Watch battery;
---Part 4.The safety of lithium batteries;
---Part 5.Safety requirements for aqueous electrolyte batteries.
This part is Part 3 of GB/T 8897.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 8897.3-2013 "Primary Battery Part 3.Watch Battery", which is mainly compared with GB/T 8897.3-2013
The technical changes are as follows.
---Revised the battery sizes in Table 1 and Table 2 (see Table 1, Table 2, and Table 1 and Table 2 of the.2013 edition);
---The relative humidity of 7.2.1 has been revised (see 7.2.1, 7.2.1 of the.2013 edition);
---Revised the resistance and time tolerance of Table 6 (see Table 6, Table 6 of the.2013 edition);
---Revised the resistance and time tolerance of Table 7 (see Table 7, Table 7 of the.2013 edition);
---Revised the discharge resistance value of some batteries in Table 8 (see Table 8, Table 8 in the.2013 edition);
---The relative humidity of 8.1 has been revised (see 8.1, 8.1 in the.2013 edition).
This section uses the redrafting law to modify and adopt IEC 60086-3.2016 "Primary Battery Part 3.Watch Battery".
Compared with IEC 60086-3.2016, this part has structural changes and appendix B has been added.
The technical differences between this part and IEC 60086-3.2016 and the reasons are as follows.
---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments.
The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows.
● Replace IEC 60086-1.2015 with GB/T 8897.1-2021 modified to adopt international standards;
● Replace IEC 60086-2.2015 with GB/T 8897.2-2021 which is modified to adopt international standards;
● Added reference to GB/T 2828.1.
---Modified the marking requirements to meet the requirements of relevant Chinese technical regulations and standards [see 4.8.1e) and 4.8.1f)];
---The normative Appendix B "Inspection Rules" has been added.
This part was proposed by the China National Light Industry Council.
This part is under the jurisdiction of the National Primary Battery Standardization Technical Committee (SAC/TC176).
Drafting organizations of this section. Songbai (Guangdong) Battery Industry Co., Ltd., Zhengzhou University of Light Industry, Fujian Nanping Nanfu Battery Co., Ltd., Light
Industrial Chemical Power Research Institute, Suzhou Product Quality Supervision and Inspection Institute, Sichuan Changhong New Energy Technology Co., Ltd.
The main drafters of this section. Ye Manhui, Wang Lizhen, Xiao Qicong, Wang Haibo, Wu Zhen, Wang Shengbing, Ma Kouxiang.
The previous releases of the standards replaced by this part are as follows.
---GB/T 7168-1987, GB/T 7168-1996;
---GB/T 8897.3-2013.
Primary battery part 3.watch battery
1 Scope
This part of GB/T 8897 specifies the dimensions and physical performance requirements, electrical performance requirements, sampling and quality of primary batteries for watches.
Guarantee, inspection methods, visual inspection and qualification conditions.
This part is applicable to multiple inspection methods. The manufacturer shall indicate its use when presenting the battery's electrical performance and/or other performance data.
The test method used.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 2828.1 Sampling inspection procedure by attributes Part 1.Batch inspection sampling plan retrieved by acceptance quality limit (AQL)
(GB/T 2828.1-2012, ISO 2859-1.1999, IDT)
GB/T 8897.1-2021 Primary battery Part 1.General (IEC 60086-1.2015, MOD)
GB/T 8897.2-2021 Primary battery Part 2.Dimensions and electrical performance (IEC 60086-2.2015, MOD)
3 Terms and definitions
The following terms and definitions defined in GB/T 8897.1-2021 apply to this document.
3.1
Capacitivereactance
A component of internal resistance that causes a voltage drop during the first few seconds of applying a load.
3.2
Capacitive
The charge (power) that the battery can output under specified discharge conditions.
Note. The unit of charge is coulomb (1C=1A·s), and the capacity is usually expressed in ampere-hour (A·h).
3.3
New battery freshbattery
Produce undischarged batteries that are less than 60 days old.
3.4
Ohmicdrop
The voltage drop caused by a component of the internal resistance at the moment the load is applied.
4 Dimensions and physical performance requirements
4.1 Battery size, symbol and size code
The external dimensions and tolerances of the watch battery should meet the requirements of Figure 1, Table 1 and Table 2.The battery size shall be inspected according to 7.1.
The symbol that shows the shape of the battery in Figure 1 is consistent with Chapter 4 in GB/T 8897.2-2021.
4.2 Extreme
Negative contact end (-). The negative contact end (size d4) should meet the requirements of Table 1 and Table 2.This requirement does not apply to the "double
Stepped" battery.
Positive terminal (). The cylindrical surface of the battery is connected to the positive terminal. The positive contact terminal should be on the side of the battery, but it can also be on the side of the battery.
bottom.
4.3 The protruding part of the negative pole (h5)
The size h5 should meet the following requirements.
---When h1/h2≤1.65, h5≥0.02;
---When 1.65 \u003ch1/h2\u003c2.5时,h5≥0.06;
---When h1/h2≥2.5, h5≥0.08.
Note. The negative contact terminal should be the highest point of the battery.
4.4 The shape of the negative pole
The three-dimensional space requirement of the negative electrode. It should be within 45° (see Figure 2).
For batteries with different angles (h1/h2), the minimum value of l1 is shown in Table 3.
4.8 Logo
4.8.1 General
The type and polarity of the battery should be marked on the battery. Other signs can be marked on the package.
a) The model named according to Appendix A.
b) Production time (year and month) and shelf life, or the deadline for the marked use period.
The production time (year and month) can be expressed by code. The code consists of the last digit of the year and a number indicating the month.
October, November and December are represented by the letters O, Y, and Z respectively.
Example.
41.January.2014; 4Y. November.2014.
c) The polarity of the positive extreme ().
d) Nominal voltage.
e) The name, trademark and address of the manufacturer or supplier.
f) Implementation standard number.
g) Mercury content (where applicable).
h) Precautions for safe use.
i) For warnings to prevent accidental swallowing of batteries, see 4.1.6.2c) of GB/T 8897.1-2021.
Note 1.The battery logo must not hinder electrical contact.
Note 2.The battery model is marked according to the naming in Appendix A. If you need to add the standard battery common name, please refer to Appendix E in GB/T 8897.2-2021.
Note 3.When the mercury content of the button battery is not more than 0.005mg/g, it is marked as "No mercury".
4.8.2 Processing
The mark of the battery treatment method shall comply with the requirements of the relevant technical regulations of our country.
5 Electrical performance requirements
5.1 Electrochemical system, nominal voltage, termination voltage and open circuit voltage
The requirements for the electrochemical system, nominal voltage, termination voltage and open circuit voltage are shown in Table 5.
5.2 Closed circuit voltage UCC (CCV), internal resistance and impedance
The closed circuit voltage and internal resistance shall be determined in accordance with 7.2.The AC impedance should be measured with an inductance, capacitance and resistance digital bridge (LCR).
The limit value should be negotiated between the supplier and the buyer.
5.3 Capacity
The continuous discharge inspection shall be carried out for about 30 days according to 7.2.6, and the requirements for the capacity shall be negotiated by the supplier and the buyer.
5.4 Capacity retention rate
The capacity retention rate refers to the measurement of the same batch of sample batteries under the given discharge conditions at 20℃±2℃ and relative humidity 55%±20%
The ratio of the capacity after storage for 12 months to its new capacity.
The capacity retention rate shall be negotiated between the supplier and the buyer, and shall be tested in accordance with 7.2.6.The capacity retention rate of the battery after storage for 12 months should be at least
Is 90%.
6 Sampling and quality assurance
The sampling plan or product quality index used should be negotiated between the supplier and the buyer. When there is no agreement between the two parties, GB/T 2828.1 or
ISO 22514-2.2017 should be adopted.
If the supplier and the demander agree, the plan in Appendix B should be adopted.
7 Inspection method
7.1 Shape and dimensions
The shape of the negative electrode contact should be inspected by the optical projection method or the opening gauge as shown in Figure 3.
The measurement method shall be negotiated between the supplier and the buyer.
7.2 Electrical performance
7.2.1 Environmental conditions
Unless otherwise specified, the sample battery should be tested at a temperature of 20 ℃ ± 2 ℃ and a relative humidity of 15% to 75%.
The battery may be used at low temperatures, so supplementary inspections of 0℃±2℃ and -10℃±2℃ should be carried out.
7.2.2 Equivalent circuit-equivalent internal resistance-DC method
The resistance of any electronic component is calculated by calculating the voltage drop ΔU across the component and the current variable that flows through the component and causes the voltage drop
Determined by the ratio of Δi, R=ΔU/Δi.
Note. The DC internal resistance of any electrochemical cell is determined according to formula (1).
Ri(Ω)=
ΔU(V)
Δi(A)
(1)
The DC internal resistance is illustrated by the instantaneous voltage diagram in Figure 4.
Figure 4 Schematic diagram of instantaneous voltage
It can be seen from Figure 4 that the voltage drop properties of the two parts of ΔU are different, as shown in formula (2).
ΔU=ΔUΩ ΔU(t) (2)
The first part of the ohmic drop ΔUΩ (at t=t1) has nothing to do with time, it is caused by the increase of current Δi, and its relationship is as formula (3)
Shown.
The second part ΔU(t) is related to time and is caused by electrochemical factors (capacitive reactance).
7.2.3 Testing equipment
The equipment used for voltage detection should have the following characteristics.
a) Accuracy. not less than 0.25%;
b) Precision. not less than 50% of the last digit;
c) Internal resistance. ≥1MΩ;
d) Timing of measurement. When performing the following inspections, make sure that the closed-circuit voltage measurement is performed in the plateau area of the voltage transient (see Figure 5).
Very important, otherwise it will cause measurement errors (small internal resistance) due to capacitive reactance.
The time required for measurement Δt' is short compared with Δt, and the testing equipment should be adapted to these requirements.
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