48results about How to "Improve boost efficiency" patented technology

The embodiment of the utility model provides a charging circuit and a mobile power supply device, and belongs to the technical field of charging, the charging circuit comprises a wireless charging coil, a charging module, a power supply management module and a battery module, the wireless charging coil is used for supplying power to equipment to be charged; a first port of the charging module is connected with the wireless charging coil, and the charging module is used for being in communication connection with the to-be-charged equipment and obtaining charging voltage required by the to-be-charged equipment; a first port of the power management module is in communication connection with a second port of the charging module, and a second port of the power management module is connected with a third port of the charging module; the battery module is connected with the power management module; wherein the power management module is used for boosting the output voltage of the battery module according to the charging voltage, and according to the embodiment of the invention, the cost can be reduced while the charging efficiency is guaranteed, and the use experience of a user can also be improved.