{
  "$type": "site.standard.document",
  "description": "Disclosed is a non-contact electric power transmission system optimizing an impedance matching and mitigating reduction of transmission efficiency. The non-contact electric power transmission system includes a power feeding unit (3) provided with a power feeding side coil (7) to which electric…",
  "path": "/patents/966258",
  "publishedAt": "2014-12-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L53/122",
    "YAZAKI CORP [JP]"
  ],
  "textContent": "Disclosed is a non-contact electric power transmission system optimizing an impedance matching and mitigating reduction of transmission efficiency. The non-contact electric power transmission system includes a power feeding unit (3) provided with a power feeding side coil (7) to which electric power is supplied, a power receiving unit (5) provided with a power receiving side coil (9) electromagnetically coupled with the power feeding side coil (7), and a capacitor (8, 11) connected in parallel with at least one of the power feeding side coil (7) and the power receiving side coil (9) so as to compose a resonance circuit, a capacity of which is varied such that a resonance frequency of the resonance circuit when the power feeding side coil (7) and the power receiving side coil (9) are critically coupled in a predetermined coil-to-coil distance between the power feeding side coil and the power receiving side coil, and a resonance frequency of the resonance circuit when the power feeding side coil and the power receiving side coil are over-coupled in a distance shorter than the coil-to-coil distance are conformed.",
  "title": "NON-CONTACT POWER TRANSMITTING SYSTEM"
}