How should battery pack testing be carried out? A battery pack is the process of connecting multiple batteries in series or in parallel, and the voltage of these batteries must be kept the same. Otherwise, the battery pack may experience abnormalities during actual operation, which may affect the normal use of electronic products. Therefore, battery pack testing is essential. Next, the Hundred Inspection Test will bring you two methods for lithium battery testing
1. Professional testing methods for lithium-ion battery packs in electric vehicles
1. After fully charging the battery, connect the battery, ammeter, and resistance wire.
2. There is an internal open circuit in the battery. Some electric vehicle lithium-ion battery packs have internal circuit breakers, manifested as the battery having voltage but no current, the entire vehicle having power, and the motor not running. If the entire vehicle is normal after replacing a new set of batteries, it is a battery problem 3. The green light of the charger does not switch. When charging, the green light of the charger does not switch. When the charger is empty, the green light of the charger is on. This is usually caused by a lack of water or dilute sulfuric acid inside the battery. After opening the upper cover of the battery, unscrew the one-way valve or safety valve, and inject an appropriate amount of specialized replenishment solution into the battery. After charging for 6-10 hours, the battery can be switched 2. Use a multimeter to test the quality of electric vehicle batteries.The most accurate method for professional testing of battery capacity is to fully charge the battery and test it with a discharge instrument. C=W=IUt, which means that the electrical capacity is equal to the discharge current amperes (A) X voltage volts (V) X time seconds or hours (S or H). Generally, discharge the battery with a rated capacity of 0.5-2 times the current. If the 12AH battery is fully charged and discharged at the rated voltage and current for two hours, it is considered qualified The current size is inversely proportional to the discharge time and discharge capacity. The larger the discharge current, such as 2 times the rate, the longer the discharge time is, and the discharge capacity is about 8AH. On the contrary, using 0.5 times the rate can produce more than two hours of discharge and can discharge 15AH
Function of testing report:
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1. Telephone communication and confirmation of requirements
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6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China