电池防爆相关测试手法整理(英文).docVIP

1. Battery Pack Protection Function Test 1-1. Over Charge Protection 1-1-1. Test Purpose: Purpose of this test is to measure first level and second level of over charge protection. No fire, No smoke and all function are normal. 1-1-2. Test Condition: Test in room temperature. 1-1-3. Test Method: 1. Use power supply (1) and LOAD to be the virtual cell’s voltage and current. 2. Use power supply (2) to be the charge voltage 3. Adjust the voltage of the power supply (1) until the circuit enters first level protection status, and extract the waveform from the scope. 4. Turn down the power supply (1), and extract the waveform from the scope for release point. 5. Adjust the voltage of the power supply (1) until the circuit enters second level protection status, and see “Does fuse blow” 1-1-4. Test Result: No fire, smoke and the all the functions are normal. 1-2. Over Discharge Protection 1-2-1. Test Purpose: Purpose of this test is to measure the critical voltage of over discharge protection and check the result if confirm the customer’s specification. No fire, smoke and all functions are normal. 1-2-2. Test Condition: Test in room temperature. 1-2-3. Test Method: 1. Use power supply (1) to be the virtual cell and offer voltage. 2. Adjust the voltage of the power supply (1) until the circuit enters protection status, and extract the waveform by scope. 3. Set power supply (1) to protection point, about 2.60V 4. Extract the waveform from the scope. 5. Use power supply (2) to be the charge voltage (set 12600mV: 3080mA) 6. Set power supply (1) to release point, about 3.0V 7. Extract the waveform from the scope. 1-2-4. Test Result: No fire, smoke and the all the functions are normal.  1-3. Over Current Circuit Protection 1-3-1. Test Purpose: Purpose of this test is to measure the discharge over current, charge over current at room temperature, and check the result if conform the customer’s specification. 1-3-2. Test Condition: Test Temperature：Test in room temperature.1-3-3.