Some standard content:
QB/T2502-2000
This standard is formulated for single lithium-ion batteries based on the characteristics of lithium-ion batteries. It technically integrates the relevant technical contents of 1J1.1642 "Potassium Battery Standard" (first edition) and SBAG1101-1997 "Safety Evaluation Standard for Lithium-ion Rechargeable Batteries" of the Japan Battery Industry Association. It is conducive to adapting to international trade and promoting the development and improvement of the lithium-ion battery industry. This standard refers to GB/T1500--1994 "General Specification for Metal Hydride Nickel Cylindrical Sealed Alkaline Storage Batteries", Y1)T998--1999 "Lithium-ion Power Supply and Charger for Mobile Communication Handheld Devices", SBAG1101 and other standards. This standard is proposed by the Industry Management Department of the State Bureau of Light Industry. This standard is under the jurisdiction of the Light Industry Chemical Power Source Research Institute. The drafting units of this standard: Weifang Jade Bird Huaguang Battery Co., Ltd. and Xiamen Baolong Industrial Co., Ltd., Chengdu Jianzhong Lithium Battery Factory, Wuhan Lixing Power Source Co., Ltd., Light Industry Chemical Power Source Research Institute, and Peking University Pioneer Technology Industry Co., Ltd. The main drafters of this standard are Sheng Honglin, Jin Minggang, Hao Yifan, Yu Zhanghua, Lin Peiyun and Zhou Henghui. 374
1 Scope
Light Industry Standard of the People's Republic of China
General Specification for Lithium-ion Batteries
QB/T 2502 2000
This standard specifies the technical requirements, test methods, inspection rules and labeling, packaging, transportation and storage of single lithium-ion batteries. This standard applies to single lithium-ion batteries (hereinafter referred to as "batteries"). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB191·1990 Pictorial signs for packaging, storage and transportation
GB/T 2423.1---1989
GB/T 2423.2.---1989
GB/T 2423.3-1993
GB/T 2423.6--- 1995
GB/T 2423.10--1995
GB/T 2828 --- 1987
GB/T 2829.--1987
3 Definitions
Basic environmental testing procedures for electric and electronic products Basic environmental testing procedures for electric and electronic products Basic environmental testing procedures for electric and electronic products Test A: Low temperature test method
Test B: High temperature test method
Test Ca: Steady state damp heat test method
Environmental testing for electric and electronic products Part 2: Test methods Test Eh and guidance: Impact Environmental testing for electric and electronic products
Part 2: Test methods
Test Fc and guidance: Vibration
(sinusoidal)
Batch inspection Attribute sampling procedure and sampling table (applicable to inspection of continuous batches) Periodic inspection Attribute sampling procedure and sampling table (applicable to inspection of production process stability) This standard adopts the following definitions.
3.1 Rated capacity
When the ambient temperature is (20 ± 5) ℃, the capacity of the battery when it is discharged at a rate of 5h to the termination voltage, expressed in (, the unit is ampere-hour (Ah) or milliampere-hour (mAh).
3.2 Nominal voltage
Used to indicate the approximate value of the lithium-ion battery voltage, generally 3.6V/cell, 3.7V/cell or 3.8V/cell, 3.3
Termination voltage||tt ||The voltage at the end of battery discharge is specified as (2.5V~3.0V)/cell. 3.4 Limiting voltage
When charging, the limiting value of the voltage of lithium-ion batteries is generally (4.10±0.05)V/cell, (4.20±0.05)V/cell 3.5 Standard charging
Under the ambient temperature (20±5)C, the battery is charged to the limiting voltage with a constant current of 0.2CA, and then the charging current is reduced to 0.05C,A.
3.6 Standard discharge
Under the ambient temperature (20±5)C, the battery is discharged to the termination voltage with a constant current of 0.2 (A. 3.7 Explosion
Approved by the State Bureau of Light Industry on 2000-12-01
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2001-06-01 implementation
QB/T2502—2000
Solid materials ejected instantly from any part of the battery are pushed more than 25cm away from the battery. 3.8 Fire
The battery is accompanied by flame combustion,
4 Technical requirements
Appearance, size and quality
Test according to 5.2, the battery surface should be clean, without obvious scratches and mechanical damage, no leakage, and the label should meet the requirements of Chapter 7 ：The size and quality of the battery shall comply with the provisions of the product specifications. 4.2 Rated capacity
The battery shall be tested according to 5.4, and the discharge time shall be not less than 5h. 4.3 High current (1C, A) discharge:
The battery shall be tested according to 5.5, and the discharge time shall be not less than 0.9h. 4.4 Low temperature discharge
The battery shall be tested according to 5.6, and the discharge time shall be not less than 3h. 4.5
High temperature discharge
The battery shall be tested according to 5.7, and the discharge time shall be not less than 1h. The time should be no less than 4.5h. 4.6
Battery internal resistance
The battery is tested according to 5.8, and its internal resistance should be less than 100mQ (1kHz AC impedance). 4.7 Charge retention capacity
The battery is tested according to 5.9, and its discharge time should be no less than 4.5h. 4.8 Cycle life
The battery is tested according to 5.10, and its cycle life should be no less than 300 times; there should be no leakage during the test. 4.9 Storage performance
The battery is tested according to 5.11 Test, the discharge time should be no less than 4.75h. 4.10 Environmental adaptability
4.10.1 High temperature performance
The battery shall be tested according to 5.12.1, and the discharge time should be no less than 4.5h. 4.10.2
Low temperature performance
The battery shall be tested according to 5.12.2, and the discharge time should be no less than 4.5h. 4.10.3 Steady heat and humidity performance
The battery shall be tested according to 5.12.3, and the discharge time should be no less than 4.5h. 4.10.4 Mechanical vibration
The battery shall be tested according to 5.12.4, and the discharge time should be no less than 5h. 4.10.5 Mechanical impact
The battery shall be tested according to 5.12.5, and the discharge time should be no less than 5h. 4.10.6
Temperature shock
The battery shall be tested according to 5.12.6, and the battery shall not leak. 4.11 Safety performance
4.11.1 Overcharge
The battery shall be tested according to 5.13.1, and the battery shall not explode or catch fire. 4.11.2
Forced discharge
The battery shall be tested according to 5.13.2, and the battery shall not explode or catch fire. 4.11.3
External short circuit
QB/T2502—2000
The battery shall be tested according to 5.13.3, and the battery shall not explode or catch fire. 4.11.4 Steel nail puncture (internal short circuit)
The battery shall be tested according to 5.13.4, and the battery shall not explode or catch fire. 4.11.5 Extrusion (internal short circuit)
The battery shall be tested according to 5.13.5, and the battery shall not explode or catch fire. 4.11.6 Impact
The battery shall be tested according to 5.13.6, and the battery shall not explode or catch fire. 4.11.7 Water immersion
The battery shall be tested according to 5.13.?, and the battery shall not explode or catch fire. 4.11.8 Drop
The battery shall be tested according to 5.13.8, and the battery shall not explode or catch fire. 4.11.9 High temperature storage
The battery shall be tested according to 5.13.9, and the battery shall not explode or catch fire. 5
Test method
Requirements for measuring instruments
5.1.1 Requirements for voltmeter
The accuracy of the instrument for measuring voltage shall not be less than 0.5 level, and the internal resistance shall not be less than 10k2/V. 5.1.2
Requirements for current meters,
The accuracy of the instrument used to measure current should not be less than 0.5 level. 5.1.3 Requirements for time meters
The accuracy of the instrument used to measure time should not be less than ±0.1%. 5.1.4 Requirements for charging power supply
It can be charged with constant current, and the accuracy should not be less than 0.3%. After the charging voltage reaches the limit voltage, it should be able to change to constant voltage charging, and the accuracy should not be less than ±0.3%.
5.1.5 Requirements for battery internal resistance test instrument
The accuracy of the instrument used to measure the internal resistance of the battery should not be less than ±0.5%. 5.1.6 Vernier caliper requirements
The accuracy of the vernier caliper used to measure the battery size shall not be less than 0.02mm. 5.1.7 Balance requirements
The sensitivity of the balance used to weigh the battery mass is 0.1g. 5.2 Appearance, size and quality inspection
Inspect the appearance and markings of the battery using the old test method: measure the battery size with a vernier caliper; weigh the battery mass with a balance. The appearance, size and quality of the battery shall comply with the provisions of 4.1.
5.3 Pre-test cycle
Before inspecting the rated capacity and discharge performance of the battery, two pre-test cycles shall be performed. The pre-test cycle shall be carried out in the following manner. The battery shall be charged according to 3.5, and after charging, placed under (20±5)℃ environmental conditions for not less than 1h, and discharged to the termination voltage according to 3.6.
5.4 Rated capacity test
The battery is charged according to 3.5. After charging, it is placed at an ambient temperature of (20 ± 5) °C for not less than 1 hour. It is discharged according to 3.6. The discharge time should comply with the provisions of 4.2.
5.5 High current discharge test
The battery is charged according to 3.5. After charging, it is placed at an ambient temperature of (20 ± 5) °C for not less than 1 hour. It is discharged at a constant current of 1 (A 377
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The discharge time should comply with the provisions of 1.3.
5.6 Low overflow discharge test
QB/T 2502--2000
The battery is charged at 3.5% and after charging, it is placed at (-20±2) (or (-10±2)℃ (polymer lithium-ion battery) for not less than 4h, and then discharged at 0.2CA constant current at the same ambient temperature. The discharge time should meet the requirements of 4.4. 5.7 High temperature discharge test
The battery is charged at 3.5% and after charging, it is placed at (60±2)℃ for not less than 4h, and then discharged at 0.2CA constant current at the same ambient temperature. The discharge time should meet the requirements of 4.5. 5.8 Internal resistance test
Under the ambient temperature of (20±5)℃, 40%60 % The battery in the state of charge is tested on the battery resistance measuring instrument. The internal resistance shall comply with the provisions of 4.6.
5.9 Charge retention test
The battery is charged according to 3.5, placed in an open circuit at an ambient temperature of (20±5)℃ for 30 days, and discharged at a constant current of 0.2C:A. The discharge time shall comply with the provisions of 4.7.
5.10 Cycle life test
Before the life test, the battery shall be discharged at a current of 0.2CA to the termination voltage. The life test shall be carried out at an ambient temperature of (20±5)℃, with a constant current of 1C,A. When the battery terminal voltage reaches the charge limit voltage, it shall be changed to constant voltage charging until the charging current is less than or equal to 0. Stop charging at 0.5CA, leave for 20 minutes, discharge to the termination voltage with 1C, A current, leave for 20 minutes, and then carry out the next charge and discharge cycle. If the first two consecutive discharge times are less than 42 minutes, the life is considered to have ended. The battery should comply with the provisions of 4.8. 5.11 Storage test
Before storage, the battery is discharged to 40%60% state of charge with 0.2CA current, and then stored for 6 months in an environment with a temperature of (20.10) and a relative humidity of 45% to 85%. During the storage period, the ambient temperature shall not exceed (20 ± 10) ℃. After the storage period expires, the battery is first discharged to the termination voltage, then charged according to 3.5 and discharged according to 3.6. The discharge time should comply with the provisions of 4.9. 5.12 Environmental performance test
5.12.1 High temperature test
a) At ambient temperature (20±5)℃ and normal atmospheric pressure, visually inspect the appearance of the sample and charge the battery according to 3.5; 1) Test according to the method of "Test Bb" in GB/T2423.2--1989. Test temperature (65±2)℃, duration 16h; c) After the test, take out the sample and place it at normal atmospheric pressure and ambient temperature (20±5)℃ for no less than 4h, visually inspect the appearance of the sample, and the appearance of the battery should comply with the provisions of 1.1; d) Discharge according to 3.6, and the discharge time should comply with the provisions of 4.10.1. 5.12.2 Low temperature test
a) Same as 5.12.1a;
b) Test according to the method of "Test Ab" in GB/T2423.1--1989. Test temperature (-20 ± 3) °C, duration 16 h: c) Same as 5.12.1c;
d) Discharge according to 3.6, the discharge time should comply with the provisions of 1.10.2. 5.12.3 Steady state damp heat test
a) Same as 5.12.1a;
b) Test according to GB/T2423.3. Test temperature (40 ± 2) (relative congestion 93%, duration 48h<) Same as 5.12.1 c;
d) Discharge according to 3.6, the discharge time should comply with the provisions of 4.10.3, 5.12.4 Mechanical vibration test
a) to 5.12.a;
b) Test according to the method of (B/T2423.10. Test conditions: frequency 10Hz ~ 55IIz, displacement amplitude 0.35mm. R, y. each direction sweep (number of cycles is 10 times), the sweep rate is one octave per minute: 378
c) 5.12.1c;
QB/T2502-2000
d) Discharge according to 3.6, the discharge time should comply with the provisions of 4.10.4. 5.12.5 Mechanical collision test
a) Same as 5.12.1a:
b) Test according to GB/T2423.6. The peak acceleration of the collision pulse is 100m/s, the pulse duration is 16ms, and the number of collisions is 1000-10 times;
1/2 of the samples are in the vertical direction, and the other 1/2 samples are in the parallel axial direction (when the number of samples is odd, multiple vertical axial directions are allowed) for collision test:
c) Same as 5.12.1c;
d) Discharge according to 3.6, and the discharge time should comply with the provisions of 4.10.5. 5.12.6 Temperature shock test
After the battery is charged according to 3.5, it is placed in a 20 environment for 2 hours, and then placed in a 50℃ environment for 2 hours. After 10 cycles of testing, the battery should not leak. The time for switching between different temperatures should not exceed 5min. 5.13 Safety Performance Test
5.13.1 Overcharge Test
Under the ambient temperature (20±5)℃, the fully discharged battery (PTC or thermal fuse protection components and electronic protection circuits can be attached) is charged at a constant current of 0.2CA for 12.5h, and the battery should not explode or catch fire (the internal safety device and protection device of the battery are allowed to operate, and there is no current output at this time: the test is allowed to be terminated). 5.13.2 Forced Discharge Test
Under the ambient temperature (20±5)℃, the battery is charged at 3.5 (PTC or thermal fuse protection components and electronic protection circuits can be attached), and then forced to discharge at a constant current of 0.2CA for 12.5h, and the battery should not explode or catch fire (the internal safety device and protection device of the battery are allowed to operate, and there is no current output at this time, and the test is allowed to be terminated). 5.13.3 External short circuit test
Under ambient temperature (20 ± 5) °C, after the battery is charged at 3.5 (PTC or thermal fuse protection components may be attached), connect the positive and negative terminals of the battery with a wire with a resistance value not greater than 50m, and make it short-circuit for more than 6 hours. The battery should not explode or catch fire (the internal safety device and protection device of the battery are allowed to operate. At this time, there is no current output and the test is allowed to be terminated). 5.13.4 Steel nail puncture (internal short circuit) test Under ambient temperature (20 ± 5) °C, after the battery is charged at 3.5, it is placed in a steel fixture, and a steel nail with a diameter of 2.5mm to 5.0mm is used to penetrate the battery in the center of the battery in a direction perpendicular to the electrode surface, and placed for more than 6 hours. The battery should not explode or catch fire. 5.13.5 Extrusion (internal short circuit) test
Under ambient temperature (20 + 5) ℃, after the battery is charged at 3.5, it is placed between two iron plates so that the electrode surface is parallel to the iron plates. A pressure of 13kN is applied to the iron plates. The battery should not explode or catch fire. 5.13.6 Impact test
Under ambient temperature (20 + 5) ℃, after the battery is charged at 3.5, a round steel bar with a diameter of 7.9mm and a length of 70mm is placed in the middle of the battery in a direction parallel to the electrode surface of the battery and at right angles to the upper terminal of the battery. Then an object weighing 9.1kg is freely dropped from a height of 61cm from the bar onto the bar (the internal safety device of the battery is allowed to operate). The battery should not explode or catch fire. 5.13.7 Immersion test
Under ambient temperature (20 + 5) ℃, after the battery is charged at 3.5, it is immersed in a water tank at room temperature and kept for more than 24 hours. The battery should not explode or catch fire.
5.13.8 Drop test
After the battery is charged according to 3.5, it is dropped from a height of 10m to concrete in any direction once. The battery should not explode or catch fire. 5.13.9 High temperature shelf test
After the battery is charged according to 3.5, it is heated to 130℃ at a heating rate of (5±1)C/min and placed in this environment for 1h. The battery should not explode, 379
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not catch fire,
QB/T 2502--2000
The above safety tests should be carried out under the condition of protective devices. 1
2The above safety tests are applicable to small lithium-ion batteries with a capacity of 100mAh~5000mAh. 6 Inspection rules
6.1 Inspection classification
The inspections specified in this standard are divided into:
a) type inspection;
b) factory inspection.
All tests are carried out by the supplier or the inspection department agreed upon by the supplier and the buyer. 6.2 Type inspection
Type inspection is generally carried out when the product design and production are finalized, but when there are major changes in the product structure, process, components and materials that may affect the important performance of the product, type inspection should be carried out. 6.2.1 Sampling plan
The samples for type inspection are produced using the same materials, equipment and processes as normal production and randomly selected. The number of samples is shown in Table ". 6.2.2 Inspection items
The items, sequence and grouping of type inspection shall be as specified in Table 1 Table 1
Inspection items
Appearance, size, quality
Rated capacity
ICsA discharge capacity
Low temperature performance
High temperature Performance
Charge retention capacity
Environmental adaptability
Cycle life
Storage performance
Safety performance
6.2.3 Judgment rules
Technical requirements
Test method
Number of samples (pieces)
3 (each item)
Number of unqualified batteries allowed (pieces)
When all inspection items meet the requirements, it is judged as type inspection Pass. If any inspection item does not meet the specified requirements, the inspection should be suspended. The manufacturer should analyze the unqualified items, find out the reasons for the unqualified items and take corrective measures before re-inspection. If the re-inspection is qualified, the inspection is judged to be passed; if there is still an item that does not meet the specified requirements after the re-inspection, it is judged that this type inspection has not passed.
Factory inspection
The factory inspection of batteries is divided into batch inspection and periodic inspection to determine whether the product can pass the production process and ensure the continuous stability of product quality.
Batch inspection
The samples for inspection are randomly selected from the products delivered for inspection, and the normal inspection method of GB/T2828--1987 is adopted. The inspection items, requirements, test methods, inspection level (I) and qualified quality level (AQIL) are as specified in Table 2. Table 2
6. 3. 1.2
6. 3. 1. 3
Inspection items
Appearance, size, quality
Rated capacity
Technical requirements
Test methods
After batch-by-batch inspection, the product batch shall be handled according to 4.12 of GB/T2828--1987: AQI
If the batch-by-batch inspection fails, the supplier shall conduct 100% inspection on the unqualified batch, remove or repair the unqualified products, and submit them for inspection again. For the batches submitted for inspection again, shall we use normal inspection or strict inspection? Whether to check all types of non-conformities or only check individual types of non-conformities that cause batch non-conformities is determined by the ordering party. If the product still fails to meet the standards after resubmission, the supply should be stopped.
Periodic inspection
Samples for periodic inspection are randomly selected from the products delivered for inspection. The one-time sampling plan of GB/T2829-1987 is adopted. The inspection items, sequence and grouping, technical requirements, test methods, sampling cycle, discrimination level (DL), non-conforming quality level (RQL) and judgment array (A:R.) are specified in Table 3.
Inspection items
Low temperature performance
High temperature performance
Charge retention
Environmental adaptability
Cycle life
Storage performance
Safety performance
6. 3.2. 1
Technical requirements
Test method
Sampling cycle
100% qualified
After the cycle inspection is completed, the product batch shall be handled according to the provisions of 4.12 of GB/T2829-1987. The samples after the cycle inspection, whether qualified or not, shall not be delivered to the ordering party. Marking, packaging, transportation, storage
Each battery shall have at least the following Chinese markings: product model, positive and negative polarity, manufacturer, manufacturing date or batch number, etc. 7.2
Each battery shall have a package to prevent short circuit. The packaged products should be placed in a dry, dustproof and moisture-proof packaging box, and the packaging box should be accompanied by a product instruction manual (the standard number should be stated in the instruction manual). The product name, model, nominal voltage, rated capacity, standard number, number of stars, gross weight, manufacturer, trademark, and production date should be marked on the outside of the packaging box. There should be labels such as "handle with care", "moisture-proof" and "upward". The packaging, storage and transportation graphic signs should comply with the provisions of GB19. 381
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QB/T2502--2000
The battery should be packed into boxes for transportation in a half-charged state. During transportation, measures should be taken to prevent severe vibration, impact or extrusion, and to prevent exposure to the sun and rain.
7.4 Storage
The battery should be stored in a half-charged state, preferably in a clean, dry, ventilated room with an ambient temperature of 5℃～35℃. It should avoid contact with corrosive substances and should be kept away from fire and heat sources. The battery should be charged once every six months during storage. The shelf life of the battery is 12 months from the date of entry into the warehouse. Products that exceed the storage period must be re-inspected batch by batch. Only qualified ones can be delivered to the ordering party. Batches that fail the batch inspection shall be handled in accordance with the batch re-submission inspection specified in 6.3.1.3. 3823 Judgment rules
Technical requirements
Test methods
Number of samples (pieces)
3 (each item)
Number of unqualified batteries allowed (pieces)
When all inspection items meet the requirements, it is judged that the type inspection has passed. If any inspection item does not meet the specified requirements, the inspection should be suspended. The manufacturer can analyze the unqualified items, find out the reasons for the unqualified items and take corrective measures before re-inspecting. If the re-inspection is qualified, the inspection is judged to have passed; if there is still an item that does not meet the specified requirements after the re-inspection, it is judged that the type inspection has not passed.
Factory inspection
The factory inspection of batteries is divided into batch inspection and periodic inspection to determine whether the product can pass the production process and ensure the continuous stability of product quality.
Batch inspection
Samples for inspection shall be randomly selected from the products delivered for inspection, and the normal inspection sampling method of GB/T2828--1987 shall be adopted. The inspection items, requirements, test methods, inspection level (I) and acceptable quality level (AQIL) shall be as specified in Table 2. Table 2
6. 3. 1.2
6. 3. 1. 3
Inspection items
Appearance, size, quality
Rated capacity
Technical requirements
Test method
After batch inspection, the product batch shall be handled according to 4.12 of GB/T2828--1987: AQI
If the batch inspection fails, the supplier shall conduct 100% inspection on the unqualified batch, remove or repair the unqualified products found, and submit them for inspection again. For the batch submitted for inspection again, whether to use normal inspection or strict inspection, whether to check all types of unqualified products or only check the individual types of unqualified products that cause the batch to fail, shall be decided by the ordering party. If the product still fails after resubmission, the supply shall be stopped.
Periodic Inspection
Samples for periodic inspection are randomly selected from the products delivered for inspection, and the single sampling plan of GB/T2829-1987 is adopted. The inspection items, sequence and grouping, technical requirements, test methods, sampling period, discrimination level (DL), unqualified quality level (RQL) and judgment array (A:R.) are as specified in Table 3.
Inspection items
Low temperature performance
High temperature performance
Charge retention
Environmental adaptability
Cycle life
Storage performance
Safety performance
6. 3.2. 1
Technical requirements
Test method
Sampling cycle
100% qualified
After the cycle inspection is completed, the product batch shall be handled according to the provisions of 4.12 of GB/T2829-1987. The samples after the cycle inspection, whether qualified or not, shall not be delivered to the ordering party. Marking, packaging, transportation, storage
Each battery shall have at least the following Chinese markings: product model, positive and negative polarity, manufacturer, manufacturing date or batch number, etc. 7.2
Each battery shall have a package to prevent short circuit. The packaged products should be placed in a dry, dustproof and moisture-proof packaging box, and the packaging box should be accompanied by a product instruction manual (the standard number should be stated in the instruction manual). The product name, model, nominal voltage, rated capacity, standard number, number of stars, gross weight, manufacturer, trademark, and production date should be marked on the outside of the packaging box. There should be labels such as "handle with care", "moisture-proof" and "upward". The packaging, storage and transportation graphic signs should comply with the provisions of GB19. 381
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QB/T2502--2000
The battery should be packed into boxes for transportation in a half-charged state. During transportation, measures should be taken to prevent severe vibration, impact or extrusion, and to prevent exposure to the sun and rain.
7.4 Storage
The battery should be stored in a half-charged state, preferably in a clean, dry, ventilated room with an ambient temperature of 5℃～35℃. It should avoid contact with corrosive substances and should be kept away from fire and heat sources. The battery should be charged once every six months during storage. The shelf life of the battery is 12 months from the date of entry into the warehouse. Products that exceed the storage period must be re-inspected batch by batch. Only qualified ones can be delivered to the ordering party. Batches that fail the batch inspection shall be handled in accordance with the batch re-submission inspection specified in 6.3.1.3. 3823 Judgment rules
Technical requirements
Test methods
Number of samples (pieces)
3 (each item)
Number of unqualified batteries allowed (pieces)
When all inspection items meet the requirements, it is judged that the type inspection has passed. If any inspection item does not meet the specified requirements, the inspection should be suspended. The manufacturer can analyze the unqualified items, find out the reasons for the unqualified items and take corrective measures before re-inspecting. If the re-inspection is qualified, the inspection is judged to have passed; if there is still an item that does not meet the specified requirements after the re-inspection, it is judged that the type inspection has not passed.
Factory inspection
The factory inspection of batteries is divided into batch inspection and periodic inspection to determine whether the product can pass the production process and ensure the continuous stability of product quality.
Batch inspection
Samples for inspection shall be randomly selected from the products delivered for inspection, and the normal inspection sampling method of GB/T2828--1987 shall be adopted. The inspection items, requirements, test methods, inspection level (I) and acceptable quality level (AQIL) shall be as specified in Table 2. Table 2
6. 3. 1.2
6. 3. 1. 3
Inspection items
Appearance, size, quality
Rated capacity
Technical requirements
Test method
After batch inspection, the product batch shall be handled according to 4.12 of GB/T2828--1987: AQI
If the batch inspection fails, the supplier shall conduct 100% inspection on the unqualified batch, remove or repair the unqualified products found, and submit them for inspection again. For the batch submitted for inspection again, whether to use normal inspection or strict inspection, whether to check all types of unqualified products or only check the individual types of unqualified products that cause the batch to fail, shall be decided by the ordering party. If the product still fails after resubmission, the supply shall be stopped.
Periodic Inspection
Samples for periodic inspection are randomly selected from the products delivered for inspection, and the single sampling plan of GB/T2829-1987 is adopted. The inspection items, sequence and grouping, technical requirements, test methods, sampling period, discrimination level (DL), unqualified quality level (RQL) and judgment array (A:R.) are as specified in Table 3.
Inspection items
Low temperature performance
High temperature performance
Charge retention
Environmental adaptability
Cycle life
Storage performance
Safety performance
6. 3.2. 1
Technical requirements
Test method
Sampling cycle
100% qualified
After the cycle inspection is completed, the product batch shall be handled according to the provisions of 4.12 of GB/T2829-1987. The samples after the cycle inspection, whether qualified or not, shall not be delivered to the ordering party. Marking, packaging, transportation, storage
Each battery shall have at least the following Chinese markings: product model, positive and negative polarity, manufacturer, manufacturing date or batch number, etc. 7.2
Each battery shall have a package to prevent short circuit. The packaged products should be placed in a dry, dustproof and moisture-proof packaging box, and the packaging box should be accompanied by a product instruction manual (the standard number should be stated in the instruction manual). The product name, model, nominal voltage, rated capacity, standard number, number of stars, gross weight, manufacturer, trademark, and production date should be marked on the outside of the packaging box. There should be labels such as "handle with care", "moisture-proof" and "upward". The packaging, storage and transportation graphic signs should comply with the provisions of GB19. 381
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QB/T2502--2000
The battery should be packed into boxes for transportation in a half-charged state. During transportation, measures should be taken to prevent severe vibration, impact or extrusion, and to prevent exposure to the sun and rain.
7.4 Storage
The battery should be stored in a half-charged state, preferably in a clean, dry, ventilated room with an ambient temperature of 5℃～35℃. It should avoid contact with corrosive substances and should be kept away from fire and heat sources. The battery should be charged once every six months during storage. The shelf life of the battery is 12 months from the date of entry into the warehouse. Products that exceed the storage period must be re-inspected batch by batch. Only qualified ones can be delivered to the ordering party. Batches that fail the batch inspection shall be handled in accordance with the batch re-submission inspection specified in 6.3.1.3. 382
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