Patent ID: 11962143
Assignee: HONOR DEVICE CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 12:
13. A terminal device, wherein the terminal device comprises a connector, a power supply, a load, and a battery, the connector is electrically connected to the power supply, the battery comprises a battery protection circuit board and an electrochemical cell, and the battery protection circuit board comprises:
two output terminals, electrically connected to the load or the power supply;
a current detection element, a first switch unit, and a second switch unit, connected to the electrochemical cell in series between the two output terminals, so that the current detection element, the first switch unit, the second switch unit, the electrochemical cell, and the load or the power supply form a loop, to charge or discharge the electrochemical cell, wherein the first switch unit and the second switch unit are both configured to control the loop to be closed or opened;
a first detection unit, configured to detect a voltage between two ends of the battery detection element, and if the voltage between the two ends of the current detection element is greater than a preset overcurrent detection voltage threshold of the first detection unit, output a control signal to the first switch unit to open the first switch unit; and
a second detection unit, configured to detect the voltage between the two ends of the battery detection element, and if the voltage between the two ends of the current detection element is greater than a preset overcurrent detection voltage threshold of the second detection unit, output a control signal to the second switch unit to open the second switch unit, wherein
the preset overcurrent detection voltage threshold of the first detection unit is different from the preset overcurrent detection voltage threshold of the second detection unit.