Capacitor charger type uninterruptible power supply

The utility model relates to the machinery field, especially a capacitor charger type uninterruptible power supply. The capacitor charger type uninterruptible power supply comprises a charger connected with commercial power lines, the charger is connected with a capacitor charger, the capacitor charger is connected with an inversion module, and the inversion module is connected with a boosting transformer. A power supply branch extends out from the boosting transformer. The boosting transformer is connected with an electronic switching switch, and the electronic switching switch is further connected with the commercial power lines. Compared with the prior art, the capacitor charger type uninterruptible power supply has the advantages that the capacitor charger is used as an energy storage device, therefore, the service lifetime is long, the capacitor charger can be used at least ten years, the charging time is short, the number of charge-discharge is high, and the production and abandonment of the capacitor c