How to test 18650 lithium battery?
18650 lithium battery testing is a technical activity, comprehensive testing of the quality of lithium batteries, from the following aspects:
1. Whether the appearance is clean, whether there is rust, whether the coding is clear, whether the casing is in good condition-visual inspection;
2. Detect lithium battery voltage, internal resistance, capacity, discharge platform, etc.-lithium battery internal resistance tester/discharge tester;
3. Capacity test, cycle test, high and low temperature cycle, rate cycle, see curve overlap degree --- lithium battery discharge tester;
4. Test rate charge and discharge, test temperature rise, test dynamic pressure difference-lithium battery discharge tester;
5. Store the batch at high temperature and normal temperature, and observe the static pressure difference-lithium battery high and low temperature test cabinet;
6. Safety tests such as short circuit, puncture, impact, thermal shock, high and low temperature charge and discharge, etc.-Lithium battery comprehensive test system/safety test;
7. Anatomical analysis of the neatness of the winding core, pole piece length, number of pole ears, welding, thickness of auxiliary materials, etc.---disassembly;
If it is only a preliminary simple test, only 18650 lithium battery internal resistance tester and discharge tester are enough
If you want to check whether the lithium battery is good or bad, it is a complicated system project, which requires professional technicians to cooperate with professional equipment. It is recommended to find a regular lithium battery manufacturer to cooperate.
The above is compiled by Shenzhen Benwei for your reference only.
