Patent ID: 11949261
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC H

Claim 0:
1. A power supply system comprising:
an alternating current sweep unit configured to output alternating current power from a U-phase battery string, a V-phase battery string, and a W-phase battery string that are Y-connected; and
a first power supply circuit configured to convert an output of a direct current sweep unit including a first battery string into alternating current power using an inverter to output alternating current power, wherein:
each of the U-phase battery string, the V-phase battery string, the W-phase battery string, and the first battery string includes a plurality of battery circuit modules connected in series;
each of the battery circuit modules includes
a battery,
output terminals provided to output a voltage of the battery,
a first switch connected to the output terminals and connected in parallel to the battery, and
a second switch connected in series to the battery, the battery circuit modules each being configured such that the voltage of the battery is applied to the output terminals when the first switch is in an OFF state and the second switch is in an ON state;

the first power supply circuit is connected to an external power supply through a first insulating filter;
the alternating current sweep unit is connected to the external power supply through a second insulating filter; and
a circuit capacity of the second insulating filter is smaller than a circuit capacity of the first insulating filter.