| 摘要 |
A mobile power supply (100) comprises a battery (110), a first interface (120), a first monitoring circuit (130), a second monitoring circuit (140), and a control circuit (150). The first interface is used to be electrically connected to an external device. The first monitoring circuit is electrically connected to the first interface, and is used to monitor and output charge-discharge properties of the external device. The second monitoring circuit is electrically connected to the battery, and is used to monitor and output a current electric quantity of the battery. The control circuit is electrically connected to the first monitoring circuit and the second monitoring circuit, separately, and is used to control whether to transmit power between the mobile power supply and the external device according to the charge-discharge properties and the current electric quantity of the battery. In the mobile power supply, a first interface can serve as an input interface or an output interface, thereby improving the utilization rate of a device. |
