Patent ID: 11923712
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. The apparatus according to claim 1, wherein:
the control circuit comprises a first control switch and a second control switch;
a first subterminal of the low-voltage terminal of the DC-DC conversion module is electrically connected to a first electrode of the battery unit;
a first terminal of the first control switch is electrically connected to a second subterminal of the low-voltage terminal of the DC-DC conversion module and a first terminal of the second control switch, and a second terminal of the first control switch is electrically connected to a second electrode of the battery unit and a first electrode of the additional power supply;
a second terminal of the second control switch is electrically connected to a second electrode of the additional power supply; and
when the battery unit discharges into the battery formation apparatus, the first terminal of the first control switch is not connected to the second terminal of the first control switch, and the first terminal of the second control switch is connected to the second terminal of the second control switch.