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Lithium battery testing method

by:dcfpower     2021-03-20

1. Incoming packaging and label inspection of polymer lithium batteries

(1) The outer packing box is not allowed to be damaged, deformed, or exposed to moisture;

(2) Outer packing The box identification should have the supplier's name, production date, OK label, specification model, material code, product color, quantity, etc. The name of the incoming material should be consistent with the system material number.

2. Appearance and size inspection of polymer lithium battery

(1) The appearance of the battery core should not be deformed, leaking, scratched, bursting, etc., and the positive and negative wires are immersed in tin The ends must not be oxidized and cannot be tinned;

(2) Insulating tape wrapping: the color is the same as the sample, and the wrapped conductor must not be exposed;

(3) positive and negative The color of the pole lead: According to the size of the specification confirmation and the reference sealing sample;

(4) The positive and negative lead safety room: according to the size of the specification confirmation and the reference sealing sample, 360° twisting is not short-circuited;

(5) Wire diameter and immersion tin wire length: According to the size of the specification confirmation and reference sealing samples;

(6) IC specifications on the protection board: control sealing samples Please refer to the IC model on the specification: (7) Battery spray code|Print code font does not match the template; the code content does not match the sample; the font is not clear, lack of painting, continuous painting;

(8) Battery size: According to the size of the specification confirmation and the reference sealed sample;

(9) Lead length: According to the size of the specification confirmation and the reference sealed sample, more than ±5mm ;

(10) The swelling of the battery is more than 110% of the original size (special thickness)

3. The whole battery

(1) Initial voltage: The incoming material of the new battery is 3.8V-4.1V; if stored for more than 6 months, the battery needs to be 100% charged and charged to the factory voltage of the new battery. Please refer to the operating instructions of the 'Battery Comprehensive Tester';

(2) Overcurrent Protection: Refer to the confirmation document parameters and the operating instructions of the 'Battery Comprehensive Tester'

(3) Internal resistance: refer to the confirmation document parameters and the operating instructions of the 'Battery Comprehensive Tester'

(4 ) Capacity: Refer to the confirmation letter, not less than the nominal capacity, the test method refers to ' Capacity Test

4. Performance of the protection board

(1) Overcharge protection voltage: refer to the confirmation document parameters and the operating instructions of the 'Protection Board Tester';

( 2) Over-discharge protection voltage: refer to the number of confirmations and the operating instructions of the 'Protection Board Tester';

(3) Over-current protection: refer to the parameters of the confirmation and the operating instructions of the 'Protection Board Tester';

(4) Internal resistance: refer to the confirmation document parameters and the operating instructions of the 'Protection Board Tester';

(4) Self-consumption current: refer to the confirmation document parameters and the 'Protection Board Tester' operating instructions;

(5) Whether 0V can be recharged: the parameters of the participant’s confirmation and the operating instructions of the 'Protection Board Tester';

5, the polymer lithium battery is reliable Performance test

(1) Marking adhesion: 95% alcohol 500g weight 15 cycles, font does not detach

(2) Drop test: 1 meter height, X/7 /Z three directions, a total of 6 drops on the cement floor, no fire, explosion, or leakage;

(3) Acupuncture test: Sharp Gongxian quickly pierced the battery core without fire or explosion;

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(4) Battery short-circuit test: the positive and negative electrodes of the battery lead are directly short-circuited, no fire, explosion, leakage, and can be reactivated;

(5) High temperature test: 55℃±2 Place it at ℃ for 2 hours, there is no abnormality in the inspection of appearance performance;

(6) Low temperature test: Place it at -20℃±2℃ for 8 hours, and there is no abnormality in the inspection of appearance performance;

(7) Vibration test: amplitude 0.38mm 10-55Hz, 30 minutes, then check the appearance and performance;

6, ROHS test: refer to 'ROHS Test Instrument'

Polymer After years of development, there have been many kinds of lithium battery manufacturing formulas, but their main material components are roughly the same. In the lithium battery industry, many lithium battery manufacturers have their own battery production technology and level gaps, which has led to problems. The material formulas of each manufacturer are different, but the main ingredients used are similar.

Related articles:

The meaning of the combination of letters and numbers in the battery pack Common lithium battery pack problems and answers to the corresponding reasons

Performance and application of -40℃ low temperature battery Reasons for self-discharge of lithium batteries


There are a wide variety of which are scientifically tested to have positive effects on the ability to custom battery pack manufacturers. custom battery pack manufacturers custom lithium ion battery is one of them.
Shenzhen Chuangneng Ruiyuan Electronics CO.,LTD. is committed to attracting, developing, and keeping a diverse work force that reflects the nature of our global business.
Many of the custom lithium ion battery listed here can be purchased for less money, but in general we recommend paying a slightly higher price for significantly improved performance. These are our top choices and their recommended configurations.
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