Patent ID: 11870282
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 14:
15. A mobile terminal comprising a charging system, wherein the charging system comprises: a first battery; a second battery having a capacity smaller than that of the first battery; a switch device disposed outside the second battery and connected to the second battery; a charging component connected to the first battery and connected to the second battery via the switch device, wherein the charging component is configured to output a charging current to the first battery and the second battery; and a control component connected to the first battery and the second battery, wherein the control component is configured to detect remaining capacity of the first battery and the second battery during a charging process, and control the switch device to turn on or turn off based on the remaining capacity,
wherein the mobile terminal is configured to:
suspend charging of the second battery during charging process by the control component and the switch device to thereby avoid overcharging of the second battery and improve safety of the charging system;
monitor the remaining capacity of the first battery and the second battery in real time, so as to determine the charging progress of the first battery and the second battery;
upon it is monitored that a remaining capacity of the second battery increases to a first preset threshold, control the switch device to disconnect the second battery from the charging component, the first battery with a large capacity is continued to be charged;
upon it is monitored that a remaining capacity of the first battery increases to a second preset threshold value, control the switch device to connect the second battery with the charging component again, and control the charging component to charge the first battery and the second battery simultaneously; and
upon the charging current of the first battery and the second battery reaches a cut-off current, complete the charging process.