Patent ID: 11962176
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 3:
4. The device according to claim 1, wherein:
when the battery is in a charging state:
the protection integrated circuit is configured to:
detect a current value of a charging current and a voltage value of a charging voltage; and
when the current value is less than a first current threshold and the voltage value is less than a first voltage threshold, send a turn-on instruction to the control switch; or
when the current value is greater than a first current threshold or the voltage value is greater than a first voltage threshold, send a turn-off instruction to the control switch; and

the control switch is configured to:
when receiving the turn-on instruction sent by the protection integrated circuit, perform switch turning-on to enable the charging current to flow to the electrochemical cell; or
when receiving the turn-off instruction sent by the protection integrated circuit, perform switch turning-off to cut off a charging path.