A time-delay uninterrupted inversion device capable of preventing a SF6 circuit breaker from not carrying out energy storage comprises a power supply identification portion (1), an inversion portion (2), a direct current wiring portion (3) and an alternating current wiring portion (4). One end of the power supply identification portion (1) is connected to an alternating current air switch (IQF) through the alternating current wiring portion (4). The other end of the power supply identification portion (1) is connected to the inversion portion (2). The inversion portion (2) is connected to a direct current air switch (IZK) through the direct current wiring portion (3). The device has advantages that through the device, an energy storage power supply of an SF6 circuit breaker mechanism is guaranteed not to be interrupted so that normal energy storage of the mechanism is guaranteed; flexible installation and dismounting are possessed and an occupation space is small; and a condition that the energy storage power supply of the SF6 circuit breaker mechanism disappears so that closing and power delivery can not be performed without energy storage is avoided and a possibility that a closing coil is burnt out is avoided too.