{
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  "description": "In a power supply device (1), a battery switching unit (50) is a circuit capable of switching a series-connected relay (56), a parallel-connected relay (51), a parallel-connected relay (52), and a parallel-connected relay (53) to switch to a series circuit connecting a first battery (11) and a…",
  "path": "/patents/1433022",
  "publishedAt": "2022-02-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L53/62",
    "YAZAKI CORP [JP]"
  ],
  "textContent": "In a power supply device (1), a battery switching unit (50) is a circuit capable of switching a series-connected relay (56), a parallel-connected relay (51), a parallel-connected relay (52), and a parallel-connected relay (53) to switch to a series circuit connecting a first battery (11) and a second battery (12) in series or a parallel circuit connecting the first battery (11) and the second battery (12) in parallel. When charging the first battery (11) and the second battery (12), a controller (60) controls the battery switching unit (50) to switch to a parallel circuit (Q1), controls the parallel-connected relay (51) based on voltages applied to a first cathode terminal (cd1) and a first anode terminal (ad1), and further controls the parallel-connected relay (52) based on voltages applied to a second cathode terminal (cd2) and a second anode terminal (ad2).",
  "title": "POWER SUPPLY DEVICE"
}