Batteries are not safe and carry risks. According to data, although the probability of lithium batteries exploding is very low, the risk of spontaneous combustion of lithium batteries is relatively high.
Ordinary lithium battery products will undergo rigorous testing before leaving the factory to avoid external factors causing hidden dangers to the products. Test items include environmental adaptability to heat resistance, vibration resistance, collision resistance and free fall resistance; circuit; storage performance, etc.
Conventional lithium battery brands place the fully charged battery in a high temperature test chamber during testing, and heat it at a rate of 3-7 degrees Celsius/minute when the temperature reaches 130 degrees . Celsius, timing starts and continuest Even if the temperature stays in the range of about 130 degrees Celsius for one hour, it can still prevent leakage, fire or explosion.
In order to avoid internal short circuits in the product, high-quality lithium batteries will design an intelligent battery management system to significantly improve the stability and pressure resistance of lithium batteries and protect lithium batteries from various abnormal conditions. , which can realize intelligent charging and discharging, adjustable charging current and other advantages.
There are 8 major precautions when using lithium batteries. You must remember: Choose a charger suitable for the lithium battery; Do not charge below 0℃ or above 45℃; It is strictly forbidden to connect the positive; and negative batteries in reverse; Non-professionals. Do not disassemble the battery yourself.
Do notdo not charge the battery indoors; do not store it mixed with flammable and explosive materials; when the battery is soaked in water, dropped or knocked, please check it if it is not used for more than $2,000,000; 7 days, take out the battery and do not use it for a long time, charge it once a month.
What are the PSE certification test items for mobile power/lithium battery?
Various standards for lithium batteries mainly examine the safety and electrical performance of lithium batteries from three perspectives: 1. Battery safety performance 2. Environmental adaptability 3. Electrical performance. Different standards emphasize battery testing: IEC61960 mainly focuses on electrical performance testing of lithium batteries; Japanese IEC62133 and JISC8714 requirements focus on user safetyization of products and security of environmental adaptability. Covers performance testing; UL2054 and UL1642 comprehensively examine the safety of cells and batteries in various usage environments, including breakdown conditions, high pressure conditions and combustion conditions.
Reliability testing of lithium batteries also includes 1. Service life 2. Discharge characteristics at different rates 3. Discharge characteristics at different temperatures 4. Charging characteristics 5. Self-discharge characteristics 6 . Self-discharge characteristics at different temperatures 7. Storage Storage characteristics 8. Over-discharge characteristics 9. Internal resistance characteristics at different temperatures 10. High temperature test 11. Temperature cycle test 12. Drop test 13. Test vibration 14. Capacity distribution test
Mandatory to test batterieslithium in mobile phones To the battery test module as a connection, the shrapnel microneedle module can achieve stable current transmission, in a small pitcThere are also reliable methods in the field h. The service life can reach more than 20W. It has good connection and current transmission capabilities, is stable and reliable, and can meet the testing needs of mobile phone lithium batteries.
1. Insulation resistance test;
2. Constant voltage DC load test
3. Battery shell temperature test under environmental conditions;
5. Temperature cycle test;
6. External short circuit test;
7. Free fall test;
p>< p>8. Mechanical impact test;
9. Thermal shock test;
10. Extrusion test;
11. /p>
12. Overload test;
13. Forced discharge test;
14. Protection testhigh-rate charging of the battery core (lithium system);
15. Battery core forced internal short circuit test;
16. Testing the battery overload protection function;
17. Free fall testing of equipment.
The above is compiled by Younai Testing. I hope this will be useful to you. If you have further questions, you can consult Younai Testing.