Patent ID: 11870357
Assignee: BYD COMPANY LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 0:
1. A DC-DC converter, comprising:
a first adjustment module, a resonance module, a second adjustment module, a current detection module and a controller, wherein:
the first adjustment module is configured to: adjust frequency of an input signal of the DC-DC converter when a battery module of a vehicle is charged by an external power supply, and rectify an output signal of the resonance module when the battery module is discharged by the external power supply;
the resonance module is configured to: resonate an output signal of the first adjustment module when the battery module of the vehicle is charged by the external power supply, and resonate an output signal of the second adjustment module when the battery module is discharged by the external power supply;
the second adjustment module is configured to: adjust frequency of an output signal of the battery module when the battery module of the vehicle is discharged by the external power supply, and rectify the output signal of the resonance module when the battery module is charged by the external power supply;
the current detection module is configured to detect a current signal of the resonance module; and
the controller, separately connected to a control end of the first adjustment module and a control end of the second adjustment module, is configured to control the first adjustment module and the second adjustment module when the current signal is greater than a current threshold, to reduce an output power.