{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "Provided is a power reception unit that receives electric power transmitted from a power transmission unit, in which variation in power transmission efficiency is prevented. The power reception unit includes: a plurality of power reception coils that are configured to receive electric power by…",
  "path": "/patents/1269809",
  "publishedAt": "2020-08-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/12",
    "Hitachi, Ltd."
  ],
  "textContent": "Provided is a power reception unit that receives electric power transmitted from a power transmission unit, in which variation in power transmission efficiency is prevented. The power reception unit includes: a plurality of power reception coils that are configured to receive electric power by magnetic coupling with a power transmission coil of the power transmission unit; and a load coil that is disposed close to the power reception coils, in which a plurality of series resonant circuits that resonate at a frequency equal to a power transmission frequency are constituted by each of the plurality of power reception coils and a resonance capacity, the plurality of series resonant circuits are connected in series in a loop shape, and the load coil extracts received electric power from the series resonant circuits.",
  "title": "Power Reception Unit, Power Transmission Unit, and Wireless Power Transfer Device"
}