Patent ID: 11967843
Assignee: SUZHOU XYSEMI ELECTRONIC TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A battery protection circuit, wherein the battery protection circuit is connected to a battery, the battery comprises a cell, a second electrode, a first electrode connected to a first pole of the cell, and the battery protection circuit comprises:
a switch circuit, a drive control circuit, a reverse connection protection circuit and a power supply circuit, and wherein
the drive control circuit comprises a first input terminal, a second input terminal, a third input terminal, a fourth input terminal and an output terminal;
the reverse connection protection circuit comprises a first input terminal, a second input terminal, a third input terminal and an output terminal;
the power supply circuit comprises a first input terminal, a second input terminal and an output terminal;
the switch circuit is connected between a second pole of the cell and the second electrode;
a first terminal of the power supply circuit is connected to the first pole of the cell, and a second terminal of the power supply circuit is connected to the second pole of the cell;
the third input terminal of the drive control circuit is connected to the second electrode, and the fourth input terminal of the drive control circuit is connected to the second pole of the cell;
the second input terminal of the reverse connection protection circuit is connected to the second electrode, and the third input terminal of the reverse connection protection circuit is connected to the second pole of the cell;
the first input terminal of the drive control circuit and the first input terminal of the reverse connection protection circuit are each connected to the output terminal of the power supply circuit;
the output terminal of the drive control circuit is connected to the switch circuit, and the drive control circuit is configured to control the switch circuit to be turned on or to be turned off; and
the reverse connection protection circuit is disposed in one of the following manners:
the output terminal of the reverse connection protection circuit is connected to the second input terminal of the drive control circuit, the reverse connection protection circuit is configured to output a reverse connection control signal in response to a reverse connection state between the battery and a charger, and the drive control circuit is configured to control, according to the reverse connection control signal, the switch circuit to be turned off; or
the output terminal of the reverse connection protection circuit is connected to the switch circuit, and the reverse connection protection circuit is configured to output a reverse connection control signal in response to a reverse connection state between the battery and a charger and control, according to the reverse connection control signal, the switch circuit to be turned off.