Do you know what performance test methods are important for lithium battery protection boards?

1. NTC resistance test: use a multimeter to directly measure the NTC resistance value, and then compare with the 'temperature change and NTC resistance comparison guide'. 2. Identification resistance test: Use a multimeter to directly measure the identification resistance value, and then compare it with the 'Protection Board Important Project Management Table'. 3. Self-consumption test: adjust the constant current source to 3.7V/500mA; set the multimeter to uA, insert the test lead into the uA jack, and connect it in series with the constant current source to the protection board B+: the reading of the multimeter is protection at this time For the self-consumption of the board, if there is no reading, short-circuit B- and P- with tweezers or tin wires to activate the circuit. 4. Short-circuit protection test: connect the battery cell to the protection board B+, B-, use tweezers or tin wire to short-circuit B-, P-, and then short-circuit P+, P-; after short-circuit, use a multimeter to measure the open circuit voltage of the protection board; repeat Short-circuit 3-5 times. At this time, the multimeter reading should be consistent with the battery cell, and the protection board should be free of smoke or bursting. Connect the circuit as shown in the figure above, set the Liyi'an data according to the important project management table, and then press the automatic button, and then press the button on the red test lead to test. At this time, the lights of the Liyi'an tester should be lit one by one, indicating that the performance is OK. Press the display key to check the test data:'Chg' means overcharge protection voltage;'Dis' means overdischarge protection voltage;'Ocur' means overcurrent protection current. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.