Some standard content:
ICS 29. 220. 10
National Standard of the People's Republic of China
CB/T 8897.12003/IEC 60086-1:2000 replaces G13/T8897.1986
Primary batteries
Part 1: General
Primary batteries-Part 1:GeneralIEC 60086-1:2000, IDT)
2003-09-01Promulgated
Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
2004-02-01Implementation
GB/T 8897.1—2003/IEC 60086-1:2000 Foreword
This part is the first part of GB/T 8897-1996 "Primary Batteries". The expected structure of this series of standards includes 5 parts: GB/T 8897.1 Primary Batteries Part 1: General Principles" GB/T 8897.2 Primary Batteries Part 2: Dimensions and Technical Requirements" GB/T 8897.3 Primary Batteries Part 3: Watch Batteries" GB8897.4 Primary Batteries Part 4: Safety Requirements for Lithium Batteries" GB8897.5% Primary Batteries Part 5: Safety Requirements for Aqueous Electrolyte Batteries" This part still adopts E℃600861:2000 Primary Batteries Part 1: General Principles (9th Edition). This part is a revision of GB/T 8897-1996 "Primary Batteries. General Principles". Compared with the 1996 edition, this part has undergone the following major changes: 1. The content of "Product Quality Index" has been added; the content of "Use Test of Aqueous Electrolyte Batteries" has been deleted. 1. This part is the same as JFC60086-1 in content and arrangement, and only the marking is different; the implementation standard number is added and the production period and shelf life of the battery are slightly changed to comply with the provisions of my country's Product Quality Law; the provisions for the marking of the mercury content of the battery are added to comply with the requirements of relevant laws and regulations of my country. Appendices A to F of this part are normative appendices. Appendices F to H of this part are informative appendices. This part replaces GB/T 8897-1996 from the date of implementation. This part was proposed by China Light Industry Federation and is under the jurisdiction of National Technical Committee for Standardization of Power Sources. The main drafting units of this part are: National Light Industry Battery Quality Testing Center, Bojian Nanping Nancui Battery Co., Ltd., Zhongyin (Ningbo Battery Co., Ltd., Guangzhou Battery Co., Ltd., Xiamen Sanri Chemical Co., Ltd., Hebei Hengshui Battery Group Co., Ltd. The participating drafting units of this part are: Shanghai Baixiangtian Battery Co., Ltd., Chongqing Battery General Factory, Duracell (China) Co., Ltd., Panyang Battery Co., Ltd.
The main drafters of this part are Lin Peiyun, Jin Miao, Zhang Shiyong, Xie Hongwei, Huang Xingping, Li Shuqi, Bai Shixian, Chen Guoping, Wu Bin, Yang Lin, Gong Zhigang, Rui Guoyu.
This part was first issued in 1988 and revised for the first time in 1996. 1) The content of this part in IEC6C083-1 has been transferred to IEC60086:4 and EC60085-5. Correspondingly, the content of this part in GB/T8897.1 has been transferred to GE 8597.4 and G3 8897.5. 1 Scope
CB/F8897.1--2003/1EC60086-1.2000 Primary cells Part 1: General
This part of GB/T8897 specifies the electrochemical system, dimensions, nomenclature, electrode structure, marking, test methods, performance, safety and environmental requirements of primary cells.
2 Normative references
The clauses in the following documents are incorporated into this part through reference in this part of GB/T8897. For dated references, all subsequent amendments (excluding errors) or revisions are not applicable to this part. However, parties to agreements based on this part are encouraged to study whether to use the latest versions of these documents. For undated references, the latest versions are applicable to this part.
GB2828.1—2003 Sampling inspection procedures for attributes Part 1: Sampling plan for batch inspection based on the acceptance quality limit (A01.)
GB/T6378-1986 Quantitative sampling inspection procedures and charts for nonconforming product rate (applicable to continuous batch inspection) GB/T8897.2 Primary batteries Part 2: Dimensions and technical requirements GR/T 8897.3 Primary batteries Part 1: Watch batteries GB8897.4 Primary batteries Part 4: Safety requirements for lithium batteries (G138897.4—2002, 1EC60086-4: 2000 Primary ball series--Safety of lithium batteries, ID'')GI38897.5Primary cells Part 5: Safety requirements for batteries with aqueous electrolytesIEC61429:1995Marking of secondary cells and batteries using the international recycling symbolIS070001135IS0/1EC Guide Part 2:1992
3 Terms and definitions
This part applies to the following terms and definitions:
Application testapplicationtcest
A test that simulates a practical application of the battery, such as a "flashlight". "Tape recorder" or "transistor radio" test. 3.2
(primary battery) dischargedischarge (ol a primary battery) The process of outputting current from an external circuit between batteries. 3.3
Dry (primary) batterydry (primary) battery (source) where the electrolyte cannot flow.
Effective internal resistanceDC methedThe resistance of any electrical component determined by calculating the ratio of the voltage drop U at the end of the electrical component to the change in current through the component. R—AU/A
Note: Similarly, the DC internal resistance R of any electrochemical system is defined as: R. =
GB/T 8897.1—2003/1EC 60086-1:2000 The DC internal resistance is illustrated by the following instantaneous voltage diagram: rn
Figure 1 Instantaneous voltage diagram
From the figure, it can be seen that the voltage drop of the two parts is different in nature and has the following relationship: AU--AU.+AU)
The first part (at time t) is independent of time and is caused by the increase of current and conforms to the following relationship: AU,--AiXR,
In the formula, the ruler is a pure ohm resistor. The second part △) is related to time and is caused by electrochemical reasons. 3.5
end-pointvolfage
End-pointvoltage
The closed-circuit voltage at the end of the specified battery discharge test. 3.6
LiquidIcak.age
Electrolyte or other substances leak from the battery 3.7
Minimum average discharge time
minimum average doration (MAD) The minimum average discharge time that a battery group should reach. Note: The discharge test is carried out in accordance with the specified method or standard to prove that the battery of the relevant model complies with its applicable standard. 3.8
Nominal voltage of primarybattery is used to indicate the appropriate approximate value of the primary battery voltage. 3.9
Closed-circuit voltage
elosed-circuit voltage (CCv)
en-loadvoltage
load voltage
the voltage between the positive and negative ends of the battery during discharge. 3.10
Open-circuit voltage
open-circuit voltage (OCV):off-lead voitageThe voltage between the positive and negative ends of the battery when no external current passes through it. 3. 11
primary battery
A power source composed of one or more single primary batteries, including the casing, poles and markings. 3.12
primarxcell
A power source that can directly convert chemical energy into electrical energy and cannot be charged by any other power source. (2)
(3)
Discharge capacity (of a primary battery)Discharge time, capacity or energy output of a battery under specified discharge conditionsDischarge capacity test serviceoulpullestA specified test used to detect the discharge capacity of a battery. Note: For example, a discharge capacity test may be specified in the following cases: a) The application test is too complex and difficult to repeat; b) The discharge time of the application test is not suitable for routine testing: 3.15
storage life
GB/T 8897.1—2003/IEC 60086-1:2000The recommended storage time of a battery under specified conditions. At the end of this storage period, the battery still has the specified amount of electricity. 3.16
(Primary battery) extremes (of a primary battery) The conductive part of the battery is used to achieve electrical connection between the battery and the external conductor. 4 Requirements
4.1 General
4.1.1 Design
Primary batteries are to be sold on the civilian market. In recent years, the battery has been improved in electrochemical performance and structure, for example, the capacity and discharge capacity have been improved, and the technical development needs of new electrical appliances using batteries as power sources have been continuously met. When designing primary batteries, the above requirements should be considered, with special attention to the consistency and stability of battery size, battery shape and electrical performance, as well as environmental protection, and ensuring that the battery has safety performance under normal use and foreseeable misuse. 4.1.2 Battery size
The dimensions of various types of batteries are given in GB/T8897.2 or GB/T8897.3. 4.1.3 Extremes
The extremes shall comply with the provisions of Chapter 7 of B/T8897.2. The shape of the extremes shall be designed to ensure that the battery can form and maintain good electrical contact at all times. The extremes shall be made of materials with appropriate conductivity and corrosion resistance. 4.1.3.1 Anti-contact pressure
The anti-contact pressure mentioned in (B/T8897.2 Battery Technical Requirements) refers to: a 10N ball with a diameter of 1mm is continuously applied to the center 105 of each contact surface of the battery, and no obvious deformation that may hinder the normal operation of the battery occurs. Note: For exceptions, see (B/T8597.3. 4. 1.3.2 Cap and base type
This type of terminal is used for batteries with the dimensions specified in Figure 1, Figure 2, Figure 3 or Figure 4 of GB/T8897.2. The cylindrical surface of the battery is insulated from the positive and negative terminals.
4.1.3.3 Case and shell type
This type of terminal is used for batteries with the dimensions specified in Figure 2, Figure 3 or Figure 4 of GB/T8897.2. The cylindrical surface of the battery constitutes part of the positive terminal of the battery.
4.1.3.4 Bolt type
Contact piece consisting of a metal screw and a metal nut or a metal nut with insulation. 4.1.3.5 Plane contact type
Electrical contact is formed on a substantially flat metal surface using appropriate contact devices. GB/T 8897.1—2003/IEC 60086-1:20004.1.3.6 Plane spring or spiral spring type
Contact piece made of metal sheet or spirally wound metal wire that can provide contact pressure. 4.1.3.7 Insertion seat type
Metal contact components installed in an insulating housing or fixture after appropriate combination can be inserted into the pins of a matching plug. 4.1.3.8 Sub-and-mother buckle
It consists of a sub-buck (non-elastic) as the positive terminal and a mother buckle (flexible) as the negative terminal. The terminal should be made of suitable metal and have good electrical contact when connected to the corresponding parts of the external circuit. 4.1.3.8.1 Contact piece spacing
The center distance between the sub-buck and the mother buckle is given in the table. The sub-buck is always used as the positive terminal of the battery and the mother buckle is used as the negative terminal. Table 1 Contact piece center distance
Nominal voltage/V
Non-elastic connector (sub-buck) of sub-and-mother buckle4. 1.3, 8. 2
Standard push type/tnm
35 ± 0. 4
Small/tum
12. 7±0 23
The size specified in this work can be determined by the feasible method. The appropriate buckle shape should be selected to make its size meet the specified requirements. Figure 2 Standard buckle
Figure 3 Small buckle
Table 2 Snap-on connector
Standard type
7. 16-0. 05
6. 85:3:85
2. 670.05
5.72±0. 05
5.38±0.05
2. 54=0. 05
Unit: millimeter
Table 2 (continued)
0.61±2: Period
4.1.3.8.3 Dimensions and requirements of elastic connectors (female buckles) of male and female buckles,
GB/T 8897.1--2003/IEC 60086-1:2000Unit: millimeter
C, 9=H 1
The dimensions of the elastic part (male buckle) of the male and female buckles are not specified. The properties of the female buckle are: a) appropriate elasticity to ensure good contact with standardized male and female connectors; b) good electrical contact.
4. 1. 3. 9 Wire
It is a single or multiple strands of bendable tinned copper wire with insulation. The insulation of the conductors may be of cotton braid or of a suitable plastic: the positive terminal conductor coating shall be red, the negative terminal black. 4.1.3.10 Spring clips
When the corresponding components of the external circuit are not known, spring clips are often used on batteries for the convenience of the consumer. Spring clips are made of brass springs or other materials with similar properties. 4.1.4 Classification (electrochemical system)
Batteries are classified according to the electrochemical system.
Except for the zinc-ammonium chloride and zinc chloride-manganese difluoride systems, each system is represented by a chemical name. Table 3 gives the electrochemical systems that have been standardized so far. Table 3 Standardized electrochemical system
ElectrolytebZxz.net
Ammonium chloride·zinc chloride
Ammonium chloride, zinc chloride
Organic electrolyte
Organic electrolyte
Non-aqueous inorganic
Organic electrolyte
Organic electrolyte
Metal oxide
Magnetic metal hydroxide
Alkali metal oxide
Note 1: The nominal voltage value is not verifiable and is for reference only. 2: The maximum The maximum open circuit voltage is measured according to the provisions of 5.5 and 6.7.1. Positive electrode
Magnesium dioxide
Nitride
Manganese monoxide
Thionyl fluoride (S)
Iron disulfide (FeSs)
Copper oxide (Cu)
Manganese dioxide
Silver oxide (A2O)
Nominal voltage/V
S: When indicating an electrochemical system, the negative electrode is generally listed first, followed by the cathode, such as: ferrous oxide.
4.1.5 Model
Maximum open circuit voltage/V
The model of the battery is determined based on the external size parameters of the original battery and the electrochemical system (if necessary, add modifiers). The detailed description of the model system (nomenclature) is shown in Appendix A. 4.1.6 Marking
4.1.6.1 General
Except small batteries, each battery shall be marked with the following: GB/T8897.1--2003/IEC60086-1:2000a) Plastic number;
1) Clearly indicate the year, month and shelf life of manufacture, or indicate the expiration date of the shelf life; c) Extreme polarity (when applicable);
d) Nominal voltage:
e) Content ("low mercury" or "mercury-free") (when applicable); Name and address of the manufacturer or supplier: g) Implementation standard number:
h) Trademark;
) Precautions for safe use (warning instructions): 4.1.G. 1.5), e), and g) can be marked on the sales packaging of the battery (such as pairs, four packs, hanging cards, etc.) 4.1.6.2 Small batteries
When this clause is used in GB3/T 8897.2: 4.1.6.1. a) and c) should be marked on the battery; 4.1.6.1. b), d), e), f), g), h) and i) can be marked on the sales packaging of the battery: but not on the battery. b) For P-system batteries, 4.1.6.1a) can be marked on the battery, sealing tape or packaging; 4.1.6.1c) May be marked on the battery sealing tape and/or on the battery: 4.1.6.1 6), 4.1.6.1 d), 4.1.6.1 f), 4.1.6.1 g), 4.1.6.1 h) and 4.1.6.1) shall be marked on the sales packaging of the battery instead of on the battery: r) There should be precautions to prevent accidental swallowing of small batteries, see GB 8897.4 and GB 8897.5 for details. 4.1.6.3 Marking of waste battery disposal methods The marking of waste battery disposal methods shall comply with the requirements of local regulations and may refer to IEC61429 when necessary. 4.1.7 Interchangeability of battery voltage
Batteries that have been standardized in GB/T8897 can be classified according to their standard discharge voltage U. For a new battery system, the voltage interchangeability is determined by the following formula: nXU<1-15%) mXU ≤nXU(1+15%) Where:
——Number of series-connected cells based on reference voltage U; m-Number of series-connected cells based on standard discharge voltage U. Currently, two voltage ranges that meet the above formula have been determined, which are determined by reference voltage U, i.e. the midpoint voltage of the corresponding voltage range.
Voltage range 1.U,=1.4 V: i.e. standard discharge voltage m×U. equal to or between n×1.19 (V) and n×1.61 (V).
Voltage range 2.U-3.2 V: i.e. standard discharge voltage m×I. equal to or between m×2.72 (V) and n×3.68 (V).
For the definition of standard discharge voltage, the corresponding value and its determination method, see Appendix G. Note: For a battery consisting of a single cell, and a battery group consisting of multiple single cells of the same voltage range, the values are equal; while for a battery group consisting of multiple single cells of different voltage ranges, the values are different from those of the standardized battery groups: Voltage range 1 includes the batteries with a nominal voltage of about 1.5V that have been standardized so far, the "no letter" system, "A", "F", "G", "I", "P" and "S" system discharge voltage range 2 includes the batteries with a nominal voltage of about 3V that have been standardized so far, namely the batteries of the "B", "C" and "E" systems. Because the batteries in voltage range 1 and voltage range 2 have significantly different discharge voltages, their appearance should be designed to be non-interchangeable. Before standardizing a new electrochemical system, its standard discharge voltage must be determined according to the method given in the appendix to determine its voltage interchangeability.
2) Standard discharge voltage is based on the principle of verifiability. The nominal voltage and maximum open circuit voltage do not meet this requirement. GB/T 8897.12003/IEC 60086-1:2000 Warning: Failure to meet this requirement may result in safety hazards to battery users, such as fire, explosion, drowning and/or damage to equipment.
This requirement is necessary for both safety and usability. 4.2 Performance
4.2.1 Discharge performance
The discharge performance requirements of primary batteries are in GB/T 8897.2 or GB/T8897.3. 4.2.2 Dimensional stability
When the battery is tested under the standard conditions specified in this standard, its dimensional stability shall always comply with the corresponding specifications in GB/T8897.2 or GB/T8897.3.
Note 1: If the button-type battery of 3.C, G, 3 and P systems is discharged below the termination voltage, its commercial value may increase by 0.25mm. Note 2: During continuous charging, the height of some button-type batteries (coin-shaped batteries) of C and B systems may decrease. 4.2. 3 Leakage
When stored and discharged under the standard conditions specified in this standard, the battery shall not leak. 4.2.4 Open circuit voltage limit
The maximum open circuit voltage of the battery shall not exceed the value given in 4.1.4. 4.2.5 Discharge capacity
The discharge time of the battery in the initial period and after storage shall comply with GB/T 8897.2 or GB/T 8897.3 requirements, 4.2. 6 Safety
When designing primary batteries, the safety requirements of batteries under specified use and foreseeable misuse conditions described in GB8897.4 and GB8897.5 should be considered.
5 Performance test
5.1 General
For the formulation of the Standard Method for Performance Test of Civil Products (SMMP), see Appendix H. 5.2 Discharge test
The discharge test in this standard is divided into two categories: 1. Application test:
Discharge capacity test,
The discharge load resistance of both tests meets the requirements, 4 According to the provisions of 5.2.1 Application test
) Calculate the equivalent resistance from the average working voltage and average current of the electrical appliance; h) Obtain the practical termination voltage and equivalent resistance value from the data of all measured electrical appliances; c) Specify the median value of this data as the resistance value and termination voltage of the discharge test; d) If the measured data are concentrated in two groups or several relatively scattered groups, more than one test is required; e) When selecting the daily discharge time, the total weekly use time of the electrical appliance needs to be considered. The daily discharge time should be selected from the specified value in 6.5 and should be closest to one seventh of the total weekly use time: Note 1: Although constant current or constant power tests are more representative of actual applications in certain situations, selecting some constant resistance tests can simplify the design of the test equipment and ensure the reliability of the equipment:
It is inevitable that load conditions will change alternately in the future; with the development of technology, it is also inevitable that the load characteristics of a certain electrical appliance will change with time.
GB/T 8897.1—2003/1EC. 60086-1:2000 It is not always possible to accurately determine the practical termination voltage of electrical appliances. The discharge conditions are only a comprehensive method selected to represent a class of electrical appliances with widely dispersed characteristics. Despite these limitations, the application test method derived from the above provisions is still the best method for evaluating the performance of batteries in certain types of electrical appliances.
Note 2: In order to reduce the number of days of application testing, the specified tests should cover 80% of the uses of batteries of this size on the market. 5.2.2 Discharge capacity test
For the discharge capacity test, the load resistor with appropriate resistance is selected so that the discharge time is about 30 days. If the full capacity of the battery cannot be obtained within the required time, the load resistor with higher resistance in 6.4 should be selected to extend the discharge time. The extended time should be as short as possible. 5.3 Compliance test of minimum average discharge time In order to test the compliance of the battery, any application test or discharge capacity test specified in GB/T8897.2 or GB/T8897.3 can be selected.
The test should be carried out as follows:
a) Test nine batteries:
b) Calculate the average value without excluding any results: c) If the average value is greater than or equal to the specified value, and the number of batteries with a monthly discharge time less than 80% of the specified value is not greater than 1, the battery discharge capacity meets the requirements!
,): If the average value is less than the specified value and/or the number of batteries with a discharge time less than 80% of the specified value is greater than 1, take another nine samples for re-test and calculate the average value;
) If the average value of the second test is greater than or equal to the specified value, and the number of batteries with a discharge time less than 80% of the specified value is not greater than 1, the discharge capacity of the battery meets the requirements; f) If the average value of the second test is less than the specified value and/or the number of batteries with a discharge time less than 80% of the specified value is greater than 1, it is considered that the discharge capacity of the battery does not meet the requirements and further testing is not allowed. Note: The discharge performance of the original battery is specified in GB/T8897.2: 5.4 The calculation method of the minimum average discharge time is specified in Appendix D of this standard.
5.5 Detection of parallel circuit voltage
Use the voltage measuring instrument specified in 6.7.1 to measure the open circuit voltage of the battery. 5.6 Battery size
Use the measuring instrument specified in 6.7.2 to measure the size of the battery. 5.7 Leakage and deformation
After the discharge capacity is measured under the specified environmental conditions, continue to discharge in the same way until the negative voltage of the battery drops below 40% of its nominal voltage. At this time, the requirements of 4.1.3.4.2.2 and 4.2.3 should be met. Note: Watch batteries should be based on GB/T 8897.3 Visually inspect the liquid condition in accordance with the provisions of Chapter 9 of 6 Performance Test Conditions
Discharge Environment Conditions
The discharge test and storage of the battery before discharge should be carried out under the specified conditions. Unless otherwise specified, the conditions specified in Table 4 shall prevail. The discharge conditions in the table are standard conditions.
Test type
Initial discharge test
Discharge test after storage
Discharge test after high-temperature storage
20±2*
45±2*
GB/T8897.1--2003/IEC60086-1:2000 Table 4 Storage and discharge test conditions before discharge
Relative humidity/%
60±15
60±15
50±15
Duration
The longest is 60 d after production
12 months
aFor a short period of time, the storage temperature may deviate from the above requirements but shall not exceed 20℃±5℃. b. This test is carried out when high temperature storage test is required. The performance requirements are agreed upon by both parties. "Open the color cell packaging. 6.2 Start of discharge test after storage. Discharge conditions. Temperature/ 20:20:2. Relative humidity/ % 60:15 60±15. The time between the end of storage and the start of discharge test should not exceed 14 days. During this period, the battery should be stored in an environment of 20%-2℃ and 60%±15%RH. After the discharge test is completed, the battery should be placed in the above environment for at least 1 day before the discharge test is started, so that the battery and the ambient temperature and humidity can reach equilibrium.
6.3 Discharge test conditions
The battery should be discharged according to the provisions of GB/T8897.2 until the closed-circuit voltage of the battery is lower than the specified termination voltage for the first time. The discharge can be expressed by the discharge time.A·h or,h. When more than one discharge test is specified in GB/T8897.2, the battery must meet all the discharge test requirements to be judged as conforming to this standard:
6. 4 Load resistance
The resistance of the load resistance (including all parts of the external circuit) shall be the value specified in GB/T8897.2, and the error between the resistance and the specified value shall not exceed ±0.5%.
When formulating a new test, the resistance of the load resistance (in ohms) shall be one of the following resistance values as far as possible, including their decimal common numbers and divisors.
6.5 Discharge time per day
The discharge time per day shall be in accordance with the provisions of GB/T8897.2. 1.50
When formulating a new test, the discharge time per day shall be one of the following values as far as possible I initi
S tnin
30 min
24h (continuous discharge)
If necessary, other requirements shall be in accordance with GB/T 8897.2 6.6 “P”—System Battery Activation
At least 10 tnin time should be allowed between battery activation and the start of electrical performance measurement. 6.7 Testing Instruments and Apparatus
6.7. 1 Voltage Measurement
The accuracy of the voltage measuring instrument should be no less than 0.25%, the precision should be no less than 50% of the last significant digit, and the internal resistance should be no less than 1 MQ.
6.7.2 Dimension and measurement
The accuracy of measuring instruments shall not be less than ±0.025%, and the precision shall not be less than 50% of the last significant value. GB/T8897.1—2003/IEC60086-1:20007 Sampling and quality assurance
The sampling plan or product quality index used can be agreed upon by the supply and demand parties. When there is no agreement between the two parties, the plans in 7.1. and/or 7.2 can be used.
7.1 Sampling
7.1.1 Counting sampling inspection
When counting sampling inspection is required, the sampling plan shall be selected in accordance with the provisions of (B/T2828), and the inspection items and the pre-acceptance quality level (AQL) shall be specified (at least 3 batteries of the same model shall be inspected). 7. 1.2 Variable sampling inspection
When variable sampling inspection is required, the sampling plan should be selected according to the provisions of (G13/T6378), and the inspection items, sample size and acceptable quality level (AQI) should be specified.
7.2 Product quality index
It is recommended to use one of the following indexes as a method to evaluate and ensure product quality. 7.2.1 Capability index (Cp)
Cp is an index that characterizes process capability. It says how much deviation is allowed within the range of sample process standard deviation α, and is defined as Cp=(USL-LSL)/process width, where the process width is expressed by 6R/d. If Cp1 and tends to the middle, it means that the process product meets the requirements. However, when Cp is 1, 2700 pieces are unqualified in every 10,000 products. Rent: USL is the upper specification limit: LSL is the lower specification limit. 7.2.2 Capability Index (Cpk)
Cpk is another index that characterizes process capability. It shows whether the process meets the allowed deviation and whether the process is centered on the monthly standard value.
Like Cpk, it is measured in the sample variable range of R/dz, assuming that the sample comes from a stable process and the error is a random variable. From the control chart, it can be seen that =R/d. Or the smaller value of the two.
Cpk is
7.2.3 Performance Index (Pp)
PP is a process performance index that shows how large the allowable deviation is within the total error range of the system. It is a measure of the actual performance of the system because all error sources are included in it. . It is calculated by treating all the observed data as a large sample. Pp is defined as (USL-LSL)/6a. 7.2. 4 Performance Index (Ppk)
Ppk is another process performance index. Like Pp, it is also a measure of the actual performance of the system. But like (pk, it also describes the degree of process centralization.
Ppk is the smaller of S or S.
In the formula, all sources of error in the system are included. 8 Battery Packaging
Practical procedures for battery packaging, transportation, storage, use and handling are shown in Appendix B.6 "P" - System battery activation
From battery activation to the start of electrical performance measurement, there should be at least 10 tnin time interval. 6.7 Testing instruments and apparatus
6.7. 1 Voltage measurement
The accuracy of the instrument for measuring voltage should not be less than +0.25%, the precision should not be less than 50% of the last significant value, and the internal resistance should not be less than 1 MQ.
6.7.2 Dimension measurement
The accuracy of the measuring instrument should not be less than ±0.025%, and the precision should not be less than 50% of the last significant value. GB/T8897.1-2003/IEC60086-1:20007 Sampling and quality assurance
The sampling plan or product quality index used can be agreed upon by the supply and demand parties. When there is no agreement between the two parties, the plan of 7.1. and/or 7.2 can be selected.
7.1 Sampling
7.1.1 Counting sampling inspection
When counting sampling inspection is required, the sampling plan should be selected according to the provisions of (B/T2828), and the inspection items and the pre-acceptance quality level (AQL) should be specified (at least 3 batteries of the same model should be inspected). 7. 1.2 Variable sampling inspection
When variable sampling inspection is required, the sampling plan should be selected according to the provisions of (G13/T6378), and the inspection items, sample size and acceptable quality level (AQI) should be specified.
7.2 Product quality index
It is recommended to use one of the following indexes as a method to evaluate and ensure product quality. 7.2.1 Capability index (Cp)
Cp is an index that characterizes process capability. It says how much deviation is allowed within the range of sample process standard deviation α, and is defined as Cp=(USL-LSL)/process width, where the process width is expressed by 6R/d. If Cp1 and tends to the middle, it means that the process product meets the requirements. However, when Cp is 1, 2700 pieces are unqualified in every 10,000 products. Rent: USL is the upper specification limit: LSL is the lower specification limit. 7.2.2 Capability Index (Cpk)
Cpk is another index that characterizes process capability. It shows whether the process meets the allowed deviation and whether the process is centered on the standard value.
Like Cpk, it is measured in the sample variable range of R/dz, assuming that the sample comes from a stable process and the error is a random variable. From the control chart, we can see that =R/d. Or the smaller value of the two.
Cpk is
7.2.3 Performance Index (Pp)
PP is a process performance index that shows how large the allowable deviation is within the total error range of the system. It is a measure of the actual performance of the system because all error sources are included in it. . It is calculated by treating all the observed data as a large sample. Pp is defined as (USL-LSL)/6a. 7.2. 4 Performance Index (Ppk)
Ppk is another process performance index. Like Pp, it is also a measure of the actual performance of the system. But like (pk, it also describes the degree of process centralization.
Ppk is the smaller of S or S.
In the formula, all sources of error in the system are included. 8 Battery Packaging
Practical procedures for battery packaging, transportation, storage, use and handling are shown in Appendix B.6 "P" - System battery activation
From battery activation to the start of electrical performance measurement, there should be at least 10 tnin time interval. 6.7 Testing instruments and apparatus
6.7. 1 Voltage measurement
The accuracy of the instrument for measuring voltage should not be less than +0.25%, the precision should not be less than 50% of the last significant value, and the internal resistance should not be less than 1 MQ.
6.7.2 Dimension measurement
The accuracy of the measuring instrument should not be less than ±0.025%, and the precision should not be less than 50% of the last significant value. GB/T8897.1-2003/IEC60086-1:20007 Sampling and quality assurance
The sampling plan or product quality index used can be agreed upon by the supply and demand parties. When there is no agreement between the two parties, the plan of 7.1. and/or 7.2 can be selected.
7.1 Sampling
7.1.1 Counting sampling inspection
When counting sampling inspection is required, the sampling plan should be selected according to the provisions of (B/T2828), and the inspection items and the pre-acceptance quality level (AQL) should be specified (at least 3 batteries of the same model should be inspected). 7. 1.2 Variable sampling inspection
When variable sampling inspection is required, the sampling plan should be selected according to the provisions of (G13/T6378), and the inspection items, sample size and acceptable quality level (AQI) should be specified.
7.2 Product quality index
It is recommended to use one of the following indexes as a method to evaluate and ensure product quality. 7.2.1 Capability index (Cp)
Cp is an index that characterizes process capability. It says how much deviation is allowed within the range of sample process standard deviation α, and is defined as Cp=(USL-LSL)/process width, where the process width is expressed by 6R/d. If Cp1 and tends to the middle, it means that the process product meets the requirements. However, when Cp is 1, 2700 pieces are unqualified in every 10,000 products. Rent: USL is the upper specification limit: LSL is the lower specification limit. 7.2.2 Capability Index (Cpk)
Cpk is another index that characterizes process capability. It shows whether the process meets the allowed deviation and whether the process is centered on the monthly standard value.
Like Cpk, it is measured in the sample variable range of R/dz, assuming that the sample comes from a stable process and the error is a random variable. From the control chart, it can be seen that =R/d. Or the smaller value of the two.
Cpk is
7.2.3 Performance Index (Pp)
PP is a process performance index that shows how large the allowable deviation is within the total error range of the system. It is a measure of the actual performance of the system because all error sources are included in it. . It is calculated by treating all the observed data as a large sample. Pp is defined as (USL-LSL)/6a. 7.2. 4 Performance Index (Ppk)
Ppk is another process performance index. Like Pp, it is also a measure of the actual performance of the system. But like (pk, it also describes the degree of process centralization.
Ppk is the smaller of S or S.
In the formula, all sources of error in the system are included. 8 Battery Packaging
Practical procedures for battery packaging, transportation, storage, use and handling are shown in Appendix B.
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