MULTIFUNCTIONAL BLUETOOTH LOUDSPEAKER BOX

摘要

The utility model discloses a multifunctional Bluetooth loudspeaker box, belonging to the technical field of sound equipment. The multifunctional Bluetooth loudspeaker box comprises a DC power interface, a polymer battery, a battery charging management circuit for controlling the charging of the polymer battery and adjusting a charging current, a Bluetooth module, a multifunctional control switch for controlling a working state of the Bluetooth module, a power amplifier module for achieving audio playing, and an external signal input interface for connection with an external signal. The Bluetooth loudspeaker box further comprises a boosting circuit for raising the voltage of the polymer battery to a fixed voltage, and an emergency charging interface. An input end of the emergency charging interface is connected with the boosting circuit, and an output end of the emergency charging interface is connected with equipment to be charged. The loudspeaker box of the utility model not only has the Bluetooth function, an ordinary power amplifier function by externally connecting a wired audio signal, but also has the emergency charging function, which solves the various needs of the user and is more practical than the general loudspeaker box.