What are the maintenance methods for portable UPS energy storage power supplies?

Portable UPS energy storage power supply maintenance method Problem 1: The portable UPS power output is normal when there is mains power, but the buzzer keeps beeping and no output when there is no mains. Fault analysis: Judging from the phenomenon that the battery and inverter are partially faulty, you can check according to the following procedures: 1. Check the battery voltage to see if the battery is under-charged. If the battery is under-charged, check whether the battery itself is faulty or the charging circuit is faulty. . 2. If the operating voltage of the battery is normal, check whether the inverter drive circuit is working normally. If the output of the drive circuit is normal, the inverter is damaged. 3. If the inverter drive circuit is not working properly, check whether the waveform appearing circuit has PWM control signal output. If there is a control signal output, it means that the fault lies in the inverter drive circuit. 4. If there is no PWM control signal output from the circuit when the waveform appears, check whether the output is blocked due to the work of the protection circuit, if so, find out the cause of the protection; problem two: After the portable UPS power supply is turned on, there is no display on the panel, and the UPS power supply is not jobs. Fault analysis: Judging from the fault phenomenon, the fault lies in the mains input, battery and mains detection part and battery voltage detection circuit: 1. Check whether the mains input fuse is burned out; 2. If the mains input fuse is intact, check whether the battery insurance Burned, because some UPS will turn off all the output and display of the UPS when the battery voltage is not detected by itself; Statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous article: What are the development opportunities for the new energy lithium battery energy storage industry?