Patent ID: 11949272
Assignee: HONOR DEVICE CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A power supply circuit for a terminal device, the power supply circuit comprising:
a battery chip comprising:
a battery end configured to couple to a positive electrode of a battery; and
an electric energy output end configured to couple to a load and to provide an output voltage of the battery to the load;

a voltage boost circuit comprising:
an input end configured to couple to the positive electrode; and
an output end configured to couple to the load,
wherein the voltage boost circuit is configured to:
boost an input voltage to obtain a boosted voltage; and
output the boosted voltage; and

a controller coupled to the voltage boost circuit and the battery chip and configured to:
control the voltage boost circuit to work and the battery chip to stop supplying power to the load when a sampling temperature is less than a preset temperature value or the output voltage is less than a first preset voltage value, wherein the sampling temperature is either a first temperature of the terminal device or a second temperature of the battery; and
control the battery chip and the voltage boost circuit to simultaneously supply the power to the load when the boosted voltage is less than the input voltage.